Andre and Elena knew that after 28 days they would have 228 coins, but they wanted to find out how many coins that actually is. Andre wrote: 228= 2 x 28 = 56 Elena said, “No, exponents mean repeated multiplication. It should be 28 x 28, which works out to be 784.” Who do you agree with? Could they both be correct or wrong? Explain your reasoning
Fοr the given expοnential functiοn, neither Andre nοr Elena gave the cοrrect explanatiοn οr calculatiοn. They bοth are wrοng.
What are expοnents?The expοnent οf a number indicates hοw many times a number has been multiplied by itself. Expοnents are necessary since, withοut them, it is highly challenging tο express the prοduct when a number is repeated several times by itself. A fractiοnal expοnent is οne where the expοnent οf a number is a fractiοn. Hοw many times we must multiply the reciprοcal οf the base is indicated by a negative expοnent. A number's expοnent is referred tο as a decimal expοnent if it is expressed in decimal fοrm. Any decimal expοnent's prοper respοnse can be a little tricky tο evaluate, thus in these situatiοns, we discοver the apprοximate sοlutiοn.
The cοmplete questiοn is given belοw.
The number οf cοins they get after 28 days = 2²⁸
This is given in expοnents fοrm.
This means that 2 is multiplied by itself 28 times.
Sο if we expand this expοnent, it will becοme:
2²⁸ = 2 * 2 * 2* 2 * 2*...........................................* 2 (until the cοunt οf 2 becοmes 28)
Andre wrοte:
2²⁸ = 2 * 28
This is wrοng because this is just twice οf 28.
Elena said, "Expοnents means repeated multiplicatiοn, which means 28*28."
This is alsο wrοng because in the οriginal expressiοn, it is given 2²⁸ which is expanded as abοve.
Here the base is 2 and the expοnent is 28.
But Elena tοοk base as 28 and expοnent as 2.
Sο it becοmes 28² = 28 *28
Therefοre fοr the given expοnential functiοn, neither Andre nοr Elena gave the cοrrect explanatiοn οr calculatiοn. They bοth are wrοng.
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Im really confused .
Answer:
Triangle A is not a scale drawing
Triangle B is a scale drawing
Triangle C is not a scale drawing
Can someone help? I have tried this problem the other day and I didn't get it right.
Answer:
x = 9[tex]\sqrt{\frac{1}{2}}[/tex]
Step-by-step explanation:
the base angles are both 45°, so both legs of the isosceles triangle = x
9² = x² + x² = 2x² Pythagorean theorem
x² = 9²/2
x = √(9²/2) = 9√(1/2)
one of the angles of a parallelogram is 36\deg greater than another one. find the angles of the parallelogram.
The value of the angles of the parallelogram are 72 degree and 108 degree.
What are the characteristics of a parallelogram?A quadrilateral with the opposing sides parallel is known as a parallelogram. It has numerous crucial traits, including:
A parallelogram has equal-length opposite sides. A parallelogram has opposite angles that are equally sized. A parallelogram's diagonals cut each other in half. A parallelogram is divided into four equal-sized triangles by its diagonals. A parallelogram's internal angles add up to 360 degrees. A parallelogram is classified as a rectangle if it also contains four right angles, making it a rectangle-shaped parallelogram.
Let us suppose the smaller angle = x.
The other angle is thus x + 36.
In a parallelogram the opposite angles are equal thus:
x + x + x + 36 + x + 36 = 360
4x + 72 = 360
4x = 288
x = 72
The value of x + 36 = 72 + 36 = 108
Hence, the value of the angles of the parallelogram are 72 degree and 108 degree.
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PLS help me it’s due tomorrow
The volume of the composite figure is 301 cm³
What is volume?Volume is defined as the space occupied within the boundaries of an object in three-dimensional space. It is also known as the capacity of the object.
Given is shape of ice creme we need to find the shapes in it and the volume.
1) The figure is a composite figure of a hemisphere and a cone.
2) Volume of hemisphere = 2/3 π × radius³, here radius is 4 cm
Volume = 2/3 π × 4³
= 2/3 × 3.14 × 64
= 134 cm³
Volume of a cone = 1/3 π × radius² × height, here height is 10 cm
Volume = 1/3 × 3.14 × 16 × 10
= 167 cm³
3) The volume of the composite figure is the sum of the volumes of the hemisphere and the cone.
= 134 + 167 = 301 cm³
Hence, the volume of the composite figure is 301 cm³
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Follow the guided instructions below to rotate the figure 90° clockwise about the point (2, 3).
Answer:
Follow the guided instructions below to rotate the figure 90° clockwise about the point (2, 3).
Step-by-step explanation:
Follow the guided instructions below to rotate the figure 90° clockwise about the point (2, 3).
Answer:15 because it is connected to the line
Step-by-step explanation:
Which answer choice correctly represents the quotient of 28,134 divided by 71?
A.
B.
C.
D.
Answer:
please give brainliest
Step-by-step explanation:
396.253521127
Write the first five terms of a sequence. Don't make your sequence too simple. Write both an explicit formula and a recursive formula for a general term in the sequence.
For the arithmetic sequence:
f(n) = f(1) + (n - 1)*4
Where the first term of the sequence is f(1) = 2
are:
f(1) = 2
f(2) = 6
f(3) = 10
f(4) = 14
f(5) = 18
How to write the first five terms of a sequence?We want to write the first five terms of a sequence, so first let's define the sequence.
We can define an arithmetic sequence with the recursive formula:
f(n) = f(n) + 4
And the explicit formula.
f(n) = f(1) + (n - 1)*4
Where we can define the first term of the sequence as f(1) = 2
Then the first five terms are:
f(1) = 2
f(2) = 2 + 4 = 6
f(3) = 6 + 4 = 10
f(4) = 10 + 4 = 14
f(5) = 14 + 4 = 18
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As an object moves along the 14.0 mm axis from x=0.0m�=0.0m to x� = 14.0 mm it is acted upon by a force given by F=(140−(x−7.0)2)N�=(140−(�−7.0)2)N.
Determine the work done by the force on the object by evaluating the integral ∫x=14.0mx=0.0mFdx∫�=0.0m�=14.0m���.
Express your answer to two significant figures and include the appropriate units.
Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type
W� =
nothingnothing
The work done by the force on the object is W∈ = -2.20 x 104 Nm.
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Real World Example 1 - Write and Solve an Inequality
a. Of the students surveyed at Madison High School, fewer than eighty-four said they have
never purchased an item online. This is about one-eighth of all those surveyed. How
many students were surveyed?
X < 84
8x < 84 (8)
The answer is 8x < 672
According to the information, the mathematical expression with which the problem is solved is 8x < 672.
How to find the expression that solves this problem?To find the expression that solves this problem we must take into account that it is an inequality. So we must use the symbols greater than > or less than <. Additionally, we must read the information in the statement to identify how it goes to the inequality.
According to the above, there are less than 84 students who answered that they had never bought online (x). Then the expression would start like this:
x < 84Subsequently, they do not say that x equals one eighth of the total number of students. Then the expression would be modified like this:
8x < 84 (8)Finally, if we simplify this expression, it would look like this:
8x < 672So, that would be the expression of this inequality.
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factor x^3 + 1/8
thank you
[tex]\textit{difference and sum of cubes} \\\\ a^3+b^3 = (a+b)(a^2-ab+b^2) ~\hfill a^3-b^3 = (a-b)(a^2+ab+b^2) \\\\[-0.35em] ~\dotfill\\\\ x^3+\cfrac{1}{8}\implies x^3+\cfrac{1^3}{2^3}\implies x^3+\left( \cfrac{1}{2} \right)^3~\hfill \stackrel{\textit{let's just for a second make}}{\cfrac{1}{2}=a} \\\\\\ x^3+a^3\implies (x+a)(x^2-ax+a^2)\implies \left( x+\frac{1}{2} \right)\left( x^2-\frac{x}{2}+\frac{1}{4} \right)[/tex]
There are 1,000 grams in 1 kilogram. Lucas has a bucket with 2 kilograms of sand. Mac has a bucket with 4 kilograms of sand. How many grams of sand do they have in all?
In total, they have 6000 grams of sand.
What are basic arithmetic operations?
The basic arithmetic operations are the four fundamental mathematical operations used to manipulate numerical values. They are addition, subtraction, multiplication, and division.
To solve the problem, we need to know the conversion factor between kilograms and grams, which is 1 kilogram = 1000 grams.
First, we can find out how many grams of sand Lucas has in his bucket. We are given that he has 2 kilograms of sand, so we can use the conversion factor to convert kilograms to grams:
2 kilograms x 1000 grams/kilogram = 2000 grams
Therefore, Lucas has 2000 grams of sand in his bucket.
Next, we can find out how many grams of sand Mac has in his bucket. We are given that he has 4 kilograms of sand, so we can use the conversion factor again:
4 kilograms x 1000 grams/kilogram = 4000 grams
Therefore, Mac has 4000 grams of sand in his bucket.
To find out the total amount of sand they have in grams, we can add the amount of sand each of them has:
2000 grams + 4000 grams = 6000 grams
Therefore, in total, they have 6000 grams of sand.
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find the surface area of each figure. round answers to the nearest hundredth, if necessary
The surface area of the prism is 224 ft².
What is a prism?Having identical endpoints in three dimensions, a prism is a solid object. This combination consists of flat faces, identical bases, and equal cross-sections.
We are given a figure of a prism having a square base.
We know that
Surface Area of Prism (A) = 2a² + 4ah
We are given the following information:
a = 4 ft
h = 12 ft
On substituting these values in the formula, we get
⇒A = 2(4)² + 4(4)(12)
⇒A = 2(16) + (16)(12)
⇒A = 32 + 192
⇒A = 224 ft²
Hence, the surface area of the prism is 224 ft².
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Since there are multiple questions so the question answered above is attached below
After solving an equation the answer is x=3. What can you say about the solution?
The solution to the equation is x=3, which means that when x is equal to 3, the equation is true.
The solution of an equation is the value of the variable that satisfies the equation.
In this case, the solution is x=3, which means that when x is substituted with 3, the equation is true.
We can say that the solution is unique, as there is only one value of x that satisfies the equation. It is also a real solution, as the value of x is a real number.
Additionally, we can say that the solution is finite, as there is a specific value for x that satisfies the equation.
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Aliza needs to run at a rate faster than 8.2 feet per second in order to exceed her fastest time in a race. After running for 15 minutes, her coach determines that she is running at an average rate of 5.8 miles per hour. He converts the average rate to feet per second as shown below:
Answer:
8.50667 or approximately 8.51 feet per second
Step-by-step explanation:
The most approximate way to get the feet per second is to multiply the miles per hour by 1.467.
For a control to reference trajectory, a robot at (5, 0) should
join a line trajectory line from (2, 3) to (8, 7). Calculate the
normalized orthogonal distance.
The normalized orthogonal distance between the robot and the reference trajectory line is approximately 4.16.
The normalized orthogonal distance is the distance between the robot and the reference trajectory line. We can use the following formula to calculate the normalized orthogonal distance:
normalized orthogonal distance = |(y2 - y1)x0 - (x2 - x1)y0 + x2y1 - y2x1| / √((y2 - y1)^2 + (x2 - x1)^2)
Where (x0, y0) is the position of the robot, and (x1, y1) and (x2, y2) are the positions of the two points on the reference trajectory line.
Plugging in the values given in the question, we get:
normalized orthogonal distance = |(7 - 3)5 - (8 - 2)0 + 8*3 - 7*2| / √((7 - 3)^2 + (8 - 2)^2)
Simplifying the equation, we get:
normalized orthogonal distance = |20 - 0 + 24 - 14| / √(16 + 36)
normalized orthogonal distance = |30| / √(52)
normalized orthogonal distance = 30 / √(52)
normalized orthogonal distance ≈ 4.16
Therefore, the normalized orthogonal distance between the robot and the reference trajectory line is approximately 4.16.
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A factory manufactures a metal peice in 32 minutes new technology allowed the factory to cut that time by 8% then another improvement cut the time by 5% how long does it take to manufacture the peice now round your answer to nearest minute
The time is takes to manufacture the piece after two improvements is 28 minutes
Calculating how long it takes to manufacture a pieceFrom the question, we are to calculate how long it takes to manufacture a metal piece
First, we need to find the new time taken to manufacture the metal piece after the two improvements.
The first improvement reduces the time by 8%. This means that the new time is:
32 - (8% of 32)
= 32 - 2.56
= 29.44 minutes
The second improvement reduces the time by 5%. This means that the new time is:
29.44 - (5% of 29)
= 29.44 - 1.45
= 27.99 minutes
We can round this to the nearest minute, which gives us 28 minutes.
Hence, it takes 28 minutes to manufacture the metal piece.
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First divide 97.65625 by 2.5. True? Or false
True, 39.0625 is the value of First division .
What is division, and how does it work?
Multiplication is the opposite of division. When you divide 12 into three equal groups, you get four in each group if three groups of four add up to 12, which they do when you multiply. The primary objective of division is to count the number of equal groups that are created or the number of individuals in each group after a fair distribution.
In mathematics, division is the process of dividing a number into equal parts and determining how many of those parts there are in total. For instance, breaking 15 into 3 equal groups of 5 is equivalent to dividing 15 by 3.
= 97.65625 / 2.5
= 39.0625
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DUE TODAY HELP!!!!!!!!!!!!
The image shows a circle with radius 5 units. Use the arc length and the radius to calculate the radian measure of 180 degrees.
The radian measure of 180 degrees is [tex]\pi \\[/tex] radians.
How to find the relation between angle subtended by the arc, the radius and the arc length?[tex]2\pi^c = 360^\circ = \text{Full circumference}[/tex]
The superscript 'c' shows angle measured is in radians.
If radius of the circle is of r units, then:
[tex]1^c \: \rm covers \: \dfrac{circumference}{2\pi} = \dfrac{2\pi r}{2\pi} = r\\\\or\\\\\theta^c \: covers \:\:\: r \times \theta \: \rm \text{units of arc}[/tex]
We are given that;
Radius=5units
Radian=180 degrees
Now,
The arc length of a circle is given by the formula:
arc length = (r * theta)
where r is the radius of the circle and theta is the angle in radians subtended by the arc at the center of the circle.
We know that the radius of the circle is 5 units, and we want to find the radian measure of an arc that subtends an angle of 180 degrees.
Since 180 degrees is half of a full circle, the arc length of this arc will be half of the circumference of the circle:
arc length = (1/2) * 2 * pi * r
= pi * r
Plugging in r = 5, we get:
arc length = pi * 5 = 5pi
Now we can use the formula for arc length to find the radian measure of the arc:
arc length = r * theta
5pi = 5 * theta
theta = pi
Therefore, by the arc length the answer will be [tex]\pi[/tex] radians.
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Answer this easy geometry question. And no links, please.
Answer:
Yes, they are equal.
Step-by-step explanation:
Because these are both right triangles, we know that one angle is similar. And seeing that side MO is the hypotenuse of both triangles, by the SA theorem we know that the two are equal. Or because we know that this is a reactangle or square by the four equal angles, we know that because this triangle is split in half, the triangle have to be equal.
-Hope this
rio drew two similar rectangles. one rectangle was 9 inches long and 6 inches wide. the second rectangle was 15 inches wide. how long was the second rectangle?
As a result, the length of the second rectangle is 22.5 inches.
Are rectangles always squares?Every square is also a rectangle because a square is a parallelogram with all particular corners at right angles. Yet not all rectangles are squares; for a rectangle to be a square, all of its sides must be the same length.
We can infer that the two rectangles may have a similar shape but differ in size because we can see how similar they are to one another.
By using the fact that the ratio of the adjacent angles of two comparable rectangles is the same, we can determine the length of the following rectangle.
Let x be the second rectangle's length. Then we can establish a ratio:
9/6 = x/15
We can cross-multiply to find x:
9 x 15 = 6 × x
135 = 6x
x = 22.5
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Help needed! Immediately would be very great :)
Answer: 56 inches
Step-by-step explanation:
To find the length of each side, use Pythagorean's Theorem, a² + b² = c²
Note the bottom sides are the same length and the top two are the same length.
Bottom sides:
5² + 12² = c²
25 + 144 = c²
169 = c²
13 = c
Top sides:
9² + 12² = c²
81 + 144 = c²
225 = c²
15 = c
Add it all together
13 + 13 + 15 + 15 = 56
The perimeter is 56 inches.
Hope this helps!
Please help I’ll give brainliest!!
25-9x² can be expressed in factor form as (5+3x)(5-3x)
What is Expression?An expression is combination of variables, numbers and operators.
The given expression is 25-9x²
We have to factor it completely
We have an identity that a²-b²=(a+b)(a-b)
25-9x² can be written as 5²-(3x)²
Now apply the identity
(5+3x)(5-3x)
Hence, 25-9x² can be expressed in factor form as (5+3x)(5-3x)
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How would I solve this and what’s the answer
Step-by-step explanation:
these 2 parallel lines create similar triangles.
that mags they're is one common scaling factor for the side lengths bergen the 2 triangles.
and that means they must have the same ratio.
the large triangle has the side lengths
24 + 9 = 33
32 + x
the smaller triangle has the corresponding side lengths
24
32
so, the equal ratios are
24/33 = 32/(32+x)
24(32 + x) = 32×33
32 + x = 32×33/24 = 4×11 = 44
x = 44 - 32 = 12
Determine whether the point C3,-1) and (2,4) are on the same side of the Straight y=2x-6 then determine their distances.
The points are not on the same side. And the distance between the line from (3, -1) and (2, 4) will be 1 / √5 units and 6 / √5 units, respectively.
What is the distance between a point and a line?Let (x₁, y₁) be the point and ax + by + c = 0 be the line. Then the distance between a point and a line will be given as,
[tex]\rm d = \dfrac{|ax_1 + by_1 + c|}{\sqrt{a^2 + b^2}}[/tex]
The diagram is given below.
The points are not on the same side of the line y = 2x - 6. Then the distance from a line to (3, -1) is given as,
d = |2 × 3 - (-1) - 6| / [√(2² + (-1)²)]
d = |7 - 6| / √5
d = 1 / √5
And the distance from a line to (2, 4) is given as,
d = |2 × 2 - 4 - 6| / [√(2² + (-1)²)]
d = |-6| / √5
d = 6 / √5
The points are not on the same side. And the distance between the line from (3, -1) and (2, 4) will be 1 / √5 units and 6 / √5 units, respectively.
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Solve the equations. Check your solutions
helppppp
Suppose the annual interest rate is 7.5% and the interest is compounded annually. How much will an investment of $1,000 be worth after 3 years?
The amount after 3 years with an interest rate of 7.5% will be $1,242.3.
What is compound interest?A loan or deposit's interest is computed using the starting principle and the interest payments from the ago decade as compound interest.
We know that the compound interest is given as
A = P(1 + r)ⁿ
Where A is the amount, P is the initial amount, r is the rate of interest, and n is the number of years.
Assume the yearly interest rate is 7.5% and the interest is compounded once a year.
If the amount of investment is $1,000 and the amount after 3 years is given as,
A = P(1 + r)ⁿ
A = $1,000 × (1 + 0.075)³
A = $1,000 × (1.075)³
A = $1,000 × 1.24229
A = $1,242.3
The amount after 3 years with an interest rate of 7.5% will be $1,242.3.
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help!!!!!!!!! im on 95/100 points on ixl and I hate quadrants.
Step-by-step explanation:
If a point is on the y-axis, it means that its x-coordinate is 0. Therefore, x = 0. However, the value of y can be any real number, since the point can be at any height above or below the origin. Therefore, y ≠ 0. So the statement that must be true is x = 0.
Samuel's house is due west of Stafford and due south of Seaside. Stafford is 24 kilometers from Samuel's house and 74 kilometers from Seaside. How far is Seaside from Samuel's house, measured in a straight line? kilometers Submit
The distance between Seaside and Samuel's house is approximately 77.8 kilometers.
Determine The distanceTo find the distance between Seaside and Samuel's house, we can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
In this case, the hypotenuse is the distance between Seaside and Samuel's house, and the other two sides are the distances from Stafford to Samuel's house and from Stafford to Seaside.
1. Let x be the distance between Seaside and Samuel's house.
2. According to the Pythagorean theorem, x^2 = 24^2 + 74^2
3. Simplifying the equation gives us x^2 = 576 + 5476
4. Further simplifying gives us x^2 = 6052
5. Taking the square root of both sides gives us x = 77.8
Therefore, the distance between Seaside and Samuel's house is approximately 77.8 kilometers
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In ΔIJK, i = 2. 1 inches, � m∠J=103° and � m∠K=13°. Find the length of k, to the nearest 10th of an inch
Answer:
k = .5 inches
Step-by-step explanation: