Answer:
sqrt( A / pi ) =r
Step-by-step explanation:
Α= pi r^2
Divide each side by pi
A / pi = r^2
Take the square root of each side
sqrt( A / pi ) = sqrt(r^2)
sqrt( A / pi ) =r
Answer: A/2pi = r
all you have to do is single out the r to get the new equation
HELP ASAP PLEASE!!!
A) The range for this function is the set
B)the domain of this function is all real numbers
C) The domain for this function is the set 3
D)All real numbers are in range of this function
E) it’s in the picture
Answer:
A and C
Step-by-step explanation:
The line is at 3, and no number is within reach except 3. So the answer is A and C.
Here are two sets of cards.
X has the same value on both cards.
Each set of cards has a range of 4.
Work out the value of X
Answer:
3
Step-by-step explanation:
In Set A, the minimum is 4 and the maximum is 7 without X which would make the range 7 - 4 = 3 but we want the range to be 4, therefore X has to be 4 + 4 = 8. Unfortunately, this would then make the range of Set B 8 - 1 = 7 so X has to be the smallest number in Set A which would be 7 - 4 = 3.
An inverse variation includes the point (4,17). Which point would also belong in this inverse variation?
Answer:
(2, 34 )
Step-by-step explanation:
Since the points vary inversely then half the x, means double the y, thus
(2, 34) or (1, 68 ) would also belong in this inverse variation
Given the graphed function below, which of the following ordered pairs are found on the inverse function?
It's (8,-2), (5,-1), (2,0), (-1,1), (-4,2). Just took it and suffered the fate of the wrong answer.
Answer:
C
Step-by-step explanation:
(Slope question!) Please help me:)
Answer:
A
Step-by-step explanation:
We know that (15, 11) (which means x = 15, y = 11) is a solution to Line Q so therefore:
11 = 4/3 * 15 + (k + 1)
11 = 21 + k
k = -10
Answer:
-10 = k
Step-by-step explanation:
y = 4/3x + ( k+1)
We know a point on the line is ( 15,11)
Substitute this point into the equation
11 = 4/3(15) + (k+1)
11 = 20 + k+1
Combine terms
11 = 21+k
Subtract 21 from each side
11-21 = k
-10 = k
Jessica started her own dog sitting business. The first week, she deposited $22.00 into her
account and spent $7.27 on dog treats and toys. The second week, she deposited another $38.50
and spent $9.99 on dog food. How much money is left in her account?
Answer:
$43.24
Step-by-step explanation:
First, find the amount of $ she deposited and spent separately.
She deposited 22 in her first week and then 38.5 on the next week. This is a total of $60.50.
The first week, she spent 7.27, then next week, 9.99. This means she spent a total of $17.26.
Second, subtract the total $ she spent from the amount she deposited.
$60.50 - $17.26 = $43.24
Answer:
she has $43.24 left in her bank account .
Dê o resultado da seguinte adição: (+27) + (+13) + (-28), (+90) + (-75) + (-47), (-50) + (-30) + (-12), (-11) + (+20) + (+35) + (-27)
Answer:
-95
Step-by-step explanation:
What is (5+5×5÷5-5)⁵/5
Answer:
625.
Step-by-step explanation:
(5+5×5÷5-5)⁵/5
=[ ( 5 + 25 / 5 - 5)^5] / 5
= [(5 + 5 - 5)^5] / 5
= [ (10 - 5)^5] / 5
= 5^5 / 5
= 5^4
= 625.
Answer:
625
Step-by-step explanation:
The rule is to do Parentheses/Brackets, then Exponents/Orders, followed by doing Multiplication and Division from left to right, and finally Addition and Subtraction from left to right. The answer is 625
PLEASE HELP
Jina received a $70 gift cards for a coffee store. She used it in buying some coffee that cost $8.64 per pound. After buying the coffee, she had $26.80 left on her card. How many pounds of coffee did she buy?
Answer:
If I'm correct she bought 5 pounds of coffee.
Step-by-step explanation:
$70 (gift card)
-$26.80 (remainder on g.c.)
= $43.20 ($ spent on money)
$43.20/ $8.64 = 5
(remainder)/ cost per lb. = lbs of coffee bought
Answer: She bought 5 pounds of coffee
Step-by-step explanation:
This situation can be represent by the equation
70 - 8.64 x = 26.80 where x is the number of coffee she bought. solve for x
-70 -70
-8.64x = -43.20
x = 5
decimal number of 1ED5
Answer:
1.ED5 LOL
Step-by-step explanation:
£1 = 1.18 euros How many pounds will lisa have to exchange to get 300.90 euros. (please answer!)
Answer:
255 pounds.
Step-by-step explanation:
We can set up a proportion.
1 pound / 1.18 euros = x pounds / 300.9 euros
1.18 * x = 1 * 300.9
1.18x = 300.9
x = 255
255 pounds.
Hope this helps!
Answer:
300.90 € = £ 255
Step-by-step explanation:
£ 1 = 1.18 €
So,
1 € = £ 1/1.18
=> 1 € = £ 0.847
Multiplying both sides by 300.90 for getting the exchange rate of 300.90 euros
=> 300.90 € = £ 0.847 * 300.90
=> 300.90 € = £ 255
Help I have to turn these in fast I'll give brainliest
Answer:
First questionTo find ? we use sine
sin ∅ = opposite / hypotenuse
From the question
The hypotenuse is 50
The opposite is 25
So we have
sin ? = 25 / 50
sin ? = 1/2
? = sin-¹ 1/2
? = 30°Second questionTo find ? we use tan
tan ∅ = opposite / adjacent
From the question
the opposite is 8
the adjacent is 33
So we have
tan ? = 8/33
? = tan-¹ 8/33
? = 13.62
? = 14° to the nearest degreeHope this helps you
Resolve into factors.
a)x4-5x2y2+4y4
Answer:
x^4-5x^2y^2+ 4y^4 = (x^2-4y^2)(x^2-y^2)
Step-by-step explanation:
Here in this question, we are to resolve the given expression into factors
x^4-5x^2y^2+ 4y^4
That can be rewritten as;
x^4-x^2y^2-4x^2y^2+4y^4
= x^2(x^2-y^2)-4y^2(x^2-y^2)
= (x^2-4y^2)(x^2-y^2)
Select the correct answer from each drop-down menu.
Tom used the following steps to find the inverse of fx), but he thinks he made an error.
Step 1
$(x) = 4x - 2
given
Step 2
y = 4x - 2
change f(x) to y
Step 3
= 4y - 2
switch r and y
Step 4
- 2 = 4y
subtract 2 from each side
Step 5
=y
divide each side by 4
Step 6
change y to y-1(x)
Answer:
Step 3.not switch the variables.Step-by-step explanation:
Tom wanted to find the inverse of f(x)= 4x - 2 using the steps in the attached image.
Tom's first mistake was in Step 3.
To correct the mistake, he should not switch the variables.
The correct procedure is:
Step 1 : Given
f(x) = 4x - 2
Step 2 : Change f(x) to y
y = 4x - 2
Step 3 : Add 2 to both sides
[tex]4x=y+ 2[/tex]
Step 4: Divide each side by 4
[tex]x=\dfrac{y+2}{4}[/tex]
Step 5: Change x to [tex]f^{-1}(x)[/tex]
[tex]f^{-1}(x)=\dfrac{y+2}{4}[/tex]
Heyy umm I need help
Answers
B, D and E are proportional
A, C, and F are not proportional
y = 3+x .... not proportional
y = 1.6x .... proportional
y = 3/(4x) .... not proportional
y = x .... proportional
y = 12x .... proportional
y = 2x+1 ... not proportional
=================================================
Explanations:
Anything in the form y = k*x is a direct proportional equation. As x goes up, so does y. The same happens if x decreases, and we'll have y also decrease. They go up together or down together. This is where the "direct" comes from. Specifically they change the same amount each time (hence the term "proportional").
For something like y = 1.6x, we have k = 1.6
In the equation y = x, we have y = 1x in reality so k = 1 here.
Lastly, y = 12x has k = 12.
----------------------
The other equations are not in the form y = kx. Whenever we have y = mx+b, with b nonzero, then y = mx+b is not proportional. The value of b must be 0 for it to fit y = kx form. This rules out y = 2x+1 and y = 3+x or y = x+3.
The equation y = 3/(4x) is an inversely proportional equation in the form y = k/x. It cannot be written as y = kx. Note how x is in the denominator for y = 3/(4x) while the same can't be said for y = kx. Inversely proportional equations have x increase and y decrease, or vice versa. They go in opposite directions.
Jim's living room is 23 feet wide and 25 feet long. He wants to put a border around the top of the room. The cost of the border is $1.00 per foot. How much will it cost to buy enough of the border to go around the room?
Answer:
$96.00
Step-by-step explanation:
Perimeter formula, 2w+2l
2(23)+2(25)=96 feet
1$ per foot
96 feet,
so $96
Answer:
I think it 96.00
Step-by-step explanation:
Please help I’m being timed!! A small dairy farm writes a business plan. It includes a graph showing the estimated amount of feed used each day in thousands of pounds, y, compared to the number of years since the farm began operating, x. What does the y-intercept represent? A) the estimated amount of years the farm can afford feed B) the maximum feed per day estimated for the life of the farm C) the estimated amount of feed per day for the start of the farm D) the maximum years the farm needs the originally estimated feed per day
Answer: The Answer is C
Step-by-step explanation: I just took the quiz on ed and this is the correct answer.
Answer: C: the estimated amount of feed per day for the start of the farm
Step-by-step explanation: 100% on quiz
In Triangle XYZ, m
triangles?
O XYZ = TUV
O XYZ = VUT
O No congruency statement can be made because only two angles in each triangle are known.
O No congruency statement can be made because the side lengths are unknown.
Answer:
No congruency statement can be made because the side lengths are unknown.
Step-by-step explanation:
We are given the measure of two angles in ∆XYZ, as 90 and 30 respectively. The 3rd angle can be known without being given. Since sum of angles in a triangle is 180°, the 3rd angle would be 180 - (90+30) = 60°.
Same applies to ∆TUV.
We only know the 3 angles of each triangle, but we are not given any of the side lengths. Therefore, we cannot make any congruency statement since the side lengths are unknown.
Urgetttttttt!!!!!!! On his way to work each day, Steve encounters one traffic light. He records the color of the light each day by marking "G" for green and "R" for red. Estimate the probability that Steve encounters a green light on any given day. G G G R R G R G G R R R R G G G G R R G
Answer:
[tex]\bold{P(A) =\dfrac{11}{20}}[/tex]
Step-by-step explanation:
A - an occurrence that Steve encounters the green light
number of all counted ligths: |Ω| = 20
number of counted green ligths: |A| = 11
Probability that Steve encounters a green light on any given day:
[tex]P(A) = \dfrac{|A|}{|\Omega|}=\dfrac{11}{20}[/tex]
A dealer sold 13 quarts containers and 11 pint containers of ice cream in one day. The number of gallons of ice cream he sold was
Answer:
4.625 gallons
Step-by-step explanation:
1. 11 pints plus 13 quarts is 18.5 quarts
2. 18.5 quarts is equal to 4.625 gallons
The number of gallons of ice cream he sold was equal to 4.625 gallons.
How to calculate unit price of something?Unit means 'single entity', the fundamental constructing block. Usually, it is 1 in mathematics and science.
Thus, unit price of something is price of 1 thing.
Therefore suppose we're taking about price of mangoes, then unit price will denote the price of 1 mango.
We need to find the number of gallons of ice cream he sold.
A dealer sold 13 quarts containers and 11 pint containers of ice cream in one day.
1. 11 pints plus 13 quarts is 18.5 quarts.
2. 18.5 quarts is equal to 4.625 gallons.
Hence, The number of gallons of ice cream he sold was equal to 4.625 gallons.
Learn more about unit price here:
https://brainly.com/question/945712
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Need help please can you answer it how the question is telling you
Answer:
243 m³
Step-by-step explanation:
The volume of a rectangular pyramid is given by:
[tex]V = \frac13lwh[/tex]
Where
l = length = 9m
w = width = 9m
h = height = 9m
so the volume is 1/3*9*9*9 = 243 m³
Answer:
243
Step-by-step explanation:
The formula for the volume of a square-based pyramid is
[tex]V=\frac{lwh}{3}[/tex]
[tex]l[/tex] = length
[tex]w[/tex] = width
[tex]h[/tex] = height
[tex]V=\frac{9 \times 9 \times 9}{3}[/tex]
[tex]V=\frac{729}{3}[/tex]
[tex]V=243[/tex]
The area is 243 cubic meters.
How does the graph of f(x) = 5cos(1/2 x) - 2 differ from the graph of g(x) = 5 cos(x) - 2?
O A. The graph of f(x) is stretched vertically.
O B. The graph of f(x) is compressed vertically.
O C. The graph of f(x) is stretched horizontally.
O D. The graph of f(x) is compressed horizontally
The difference between the graph of the function is
The graph of f(x) is stretched horizontally.
What is Function?In mathematics, a function is an expression, rule, or law that establishes the relationship between an independent variable and a dependent variable. In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.
We have two function,
f(x) = 5 cos ( 1/2 x ) - 2
g(x) = 5 cos (x) -2
The graph represented by red line is function f(x) and the graph represented by blue line is g(x).
As, seen from the f(x) is stretched by 2 units then g(x).
Learn more about Function here:
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Please answer it now in two minutes
Answer:
15√3
Step-by-step explanation:
This is a 30-60-90 triangle, so in order to solve for v, we can multiply the short leg by √3, which we will get 15√3.
Answer:
v = 25.98
Step-by-step explanation:
You could do this a number of ways. Some are much longer than others. The shortest way is to use the tangent.
Formula
Tan(theta) = opposite / adjacent
Givens
Theta = 30o
Opposite = 15 km
Adjacent = x
Solution
tan(30) = 15 / v Multiply both sides by v
v*tan(30) = 15 Divide by tan(30)
v = 15/tan(30)
tan(30) = 0.5774
v = 15 / 0.5774
v = 25.98
The volume of a triangular prism is increased by a factor of 8.
By what factor is the surface area of the figure increased?
2
4
16
24
Apply the distributive property to factor out the greatest common factor.
{25p + 50q} =25p+50q=25, p, plus, 50, q, equals
Answer:
25p + 50q = 25(p + 2q)Step-by-step explanation:
25p = (25)(p)
50q = (25)(2q)
therefore
25p + 50q = (25)(p) + (25)(2q) = (25)(p + 2q)
Answer:
p + 2q = 1
Step-by-step explanation:
25(p + 2q) = 25
p + 2q = 1
18. In a recent survey, 75% of the community favored building a police substation in their neighborhood. If 10 citizens are chosen, find the probability that exactly 8 of them favor the building of the police substation.
Answer: 0.28157
Step-by-step explanation:
Given, The proportion of the community favored building a police substation in their neighborhood: p= 0.75
Number of citizens are chosen: n= 10
Let x be the binomial variable that represents the number of citizens favor the building of the police substation.
Then, the probability that exactly 8 of them favor the building of the police substation will be :
[tex]P(x=8)=\ ^{10}C_8(0.75)^8(1-0.75)^2[/tex]
[Using binomial probability function [tex]P(X=x)=^nC_xp^x(1-p)^{n-x}[/tex]]
[tex]=\dfrac{10!}{8!2!}(0.100113)(0.0625)\\\\=0.2815678125\approx0.28157[/tex]
Hence, the probability that exactly 8 of them favor the building of the police substation =0.28157
Which of the following steps would you perform to the system of equations
below so that the equations have equal x-coefficients?
4x+2y = 4
12x+y = 22
A. Divide both sides of the bottom equation by 2
B. Multiply both sides of the top equation by 3
C. Multiply both sides of the bottom equation by 3
D. Divide both sides of the top equation by 3
Answer:
B. Multiply both sides of the top equation by 3
Step-by-step explanation:
Given:
4x+2y = 4
12x+y = 22
For the equations to have equal x-coefficients, you'll multiply both sides of (1) by 3
4x+2y = 4 (1)
12x+y = 22 (2)
B. Multiply both sides of the top equation by 3
3(4x+2y=4)
We have,
12x+6y=12 (3)
12x+y=22 (2)
Subtract (2) from (3)
5y=12-22
5y=-10
y= -10/5
y=-2
Substitute y=-2 into (1)
4x+2y = 4
4x+2(-2)=4
4x-4=4
4x=4+4
4x=8
x=8/4
x=2
Therefore, y= -2 and x=2
Answer:
its B
Step-by-step explanation:
A pex:)
I need helpp please help me
The slope of a line is 2, and the y-intercept is 0. What is the equation of the line written in slope-intercept form?
O y = x + 2
Oy= 2x
Oy= 2
Answer:
y =2x
Step-by-step explanation:
Slope intercept form is
y= mx+b where m is the slope and b is the y intercept
y = 2x+0
y = 2x
Answer:
Step-by-step explanation:
e
Solve the following quadratic equation by completing the square ✓3x^2 + 10x + 7✓3 = 0
[tex]\sqrt{3}x^2+10x+7\sqrt{3}=0\\\\\sqrt3(x^2+\dfrac{10x}{\sqrt{3}}+7)=0\\\\x^2+\dfrac{10x}{\sqrt{3}}+7=0\\\\x^2+\dfrac{10x}{\sqrt{3}}+\dfrac{25}{3}-\dfrac{25}{3} +7=0\\\\(x+\dfrac{5}{\sqrt{3}})^2 = \dfrac{4}{3}\\\\|x+\dfrac{5}{\sqrt{3}}| = \dfrac{2}{\sqrt{3}}\\\\x_1 = \dfrac{2}{\sqrt{3}}-\dfrac{5}{\sqrt{3}} = -\dfrac{3}{\sqrt{3}} = -\sqrt{3}\\\\x_2 = -\dfrac{2}{\sqrt{3}}-\dfrac{5}{\sqrt{3}} = \dfrac{-7}{\sqrt{3}} = -\dfrac{-7\sqrt{3}}{3}[/tex]