Answer:
cos 42 = 10 / AB
Step-by-step explanation:
Since this is a right angle, we can use trig functions
cos theta = adjacent / hypotenuse
cos 42 = 10 / AB
please help- my final is timed! xx Identify the graph of the triangle with vertices P(1,4), Q(1,1), R(3,1). Then identify the image that represents ΔPQR rotated 90° counterclockwise around vertex Q and the resulting image reflected across the x-axis.
Answer:
Since it is a negative degree it’s a counter clockwise meaning the fourth picture or D with the vertexs being p’(-2,-1),q’(1,-1),r’(1,-3)
Step-by-step explanation:
A cougar can run 25 miles per hour. A cheetah can run 55 miles per hour. if they both run at 3 hours full speed, how much farther will the cheetah run
Answer:
Step-by-step explanation:
( in 3hrs calculate distance)
,the cheetah will run 90 miles farther the cougar
pls mark my answer as the brainliest
Solve 6x^2 +5x - 4 = 0 by factoring. Enter each step. please help me.
Answer:
x = 0.36
Step-by-step explanation:
6x^2 +5x - 4 = 0
6x+5x-4 = 0÷2
11x = 0+4
x = 4÷11
Therefore, x = 0.36
Jerry solved the system of equations. x minus 3 y = 1. 7 x + 2 y = 7. As the first step, he decided to solve for y in the second equation because it had the smallest number as a coefficient. Max told him that there was a more efficient way. What reason can Max give for his statement? The variable x in the first equation has a coefficient of one so there will be fewer steps to the solution. The variable x in the second equation has a coefficient of 7 so it will be easy to divide 7 by 7. The variable y in the second equation has a coefficient of 2 so it will be easy to divide the entire equation by 2. The variable x in the second equation has the largest coefficient. When dividing by 7, the solution will be a smaller number.
Answer:
A. The variable x in the first equation has a coefficient of one so there will be fewer steps to the solution.
Step-by-step explanation:
Given
[tex]Equation\ 1: x - 3y = 1[/tex]
[tex]Equation\ 2: 7x + 2y = 7[/tex]
Required
Efficient way of solving the equations
The efficient way of solving this problem is by solving for x in the first equation because it has a coefficient of 1;
The evidence is shown as follows;
Make x the subject of formula in equation 1
[tex]x = 1 + 3y[/tex]
Substitute 1 + 3y for x in equation 2
[tex]7x + 2y = 7[/tex]
[tex]7(1 + 3y) + 2y = 7[/tex]
Open bracket
[tex]7 + 21y + 2y = 7[/tex]
[tex]7 + 23y =7[/tex]
Make y the subject of formula
[tex]23y = 7 - 7[/tex]
[tex]23y = 0[/tex]
Divide both sides by 23
[tex]\frac{23y}{23} = \frac{0}{23}[/tex]
[tex]y = 0[/tex]
Recall that x = 1 + 3y
Substitute 0 for y in the above expression
[tex]x = 1 + 3(0)[/tex]
[tex]x = 1 + 0[/tex]
[tex]x = 1[/tex]
Solving for y in the second equation will take more steps
Answer:
A: The variable x in the first equation has a coefficient of one so there will be fewer steps to the solution.
Step-by-step explanation:
Which point is the image of R? Choose one answer: A B C D
Answer:
point D
Step-by-step explanation:
moving 270 degrees clockwise from point R would result in the point being in quadrant I
point D is the only point in quadrant I
What can a firm do to increase productivity in the short run once its marginal product is zero?
Increase the quantity of the input.
Decrease the quantity of the input.
Lower the price of its product.
Raise the price of its product.
Nothing, as more workers decreases total product.
Answer:
Decrease the quantity of the input
Step-by-step explanation:
The general assumption is that productivity is a curve that is concave downward, Hence marginal product is decreasing until it reaches zero. The way to increase it is to reduce the input quantity to a value below the point where the curve reaches zero marginal product.
Answer:
e) Nothing, as more workers decreases total product.
Step-by-step explanation:
I got it right on the test.
PLEASE HELP! 20 POINTS
Answer:
question 1: 5/9 question 2: 9/5
Step-by-step explanation:
10/18 can be simplified to 5/9
18/10 can be simplified to 9/5
A farmer has the same number of chickens, cows and goats. Together, all these animals have 210 legs. How many chickens live on this farm?
Answer:
21
Step-by-step explanation:
Chickens - 2x
cows - 4x
goats = 4x
2x+4x+4x+210
10x=210
x=21
CHECK:
21 chickens = 42 legs
21 cows = 84 legs
21 goats = 84 legs
42+84+84=210 legs
The function f(x)=3(1.85)^x+3 is a shown .....
Answer:
easy, heres a hand y≈12⋅1.85x :)
P.s. have a good day :)
Answer:
see below
Step-by-step explanation:
f(x)=3(1.85)^x +3
Let x = - ∞
f(x)=3(1.85)^-∞ +3
= 3* 0 +3
= 3
The graph goes to 3
The graph has a horizontal asymptote of y=3
Let x = ∞
f(x)=3(1.85)^∞ +3
= 3* ∞ +3
= ∞
The graph goes to ∞
solve for y: y÷1 7/9 = 3/4
Answer:
y = 4/3
Step-by-step explanation:
The required value of fraction y is 4/3.
Given that,
[tex]\frac{y}{1\frac{7}{9} } = 3/4[/tex]
Fraction y is to be determined by simplification.
The process in mathematics to operate and interpret the function to make function simple or more understandable is called simplifying and the process is called simplification.
What is the fraction?Fraction is defined as the number of compositions that constitute the Whole. Fraction is represented as x = a / b where the upper value is termed as the numerator and the lower value is the denominator.
⇒Simplification
[tex]\frac{y}{1\frac{7}{9} } = 3/4[/tex] ( 1 + 7 / 9 = 16 / 9)
[tex]\frac{y}{\frac{16}{9} } = 3/4[/tex] (Transposition of 16/9 from the denominator to the right)
y = 3 / 4 * 16 / 9
y = 4 / 3
Thus, the required value of fraction y is 4/3.
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An expression is shown below: 2x3y + 18xy − 10x2y − 90y Part A: Rewrite the expression by factoring out the greatest common factor. Part B: Factor the entire expression completely. Show the steps of your work.
Answer:
Part A : 2y( x³ + 9x - 5x² - 45 ), Part B : 2y( x - 5 )( x² + 9 )
Step-by-step explanation:
Part A : Let's break every term down here to their " prime factors ", and see what is common among them,
2x³y + 18xy − 10x²y − 90y -
2x³y = 2 [tex]*[/tex] x³ [tex]*[/tex] y,
18xy = 2 [tex]*[/tex] 3 [tex]*[/tex] 3 [tex]*[/tex] x [tex]*[/tex] y,
− 10x²y = 2 [tex]*[/tex] - 5 [tex]*[/tex] x² [tex]*[/tex] y, - so as you can see for this example I purposely broke down - 10 into 2 and - 5. I could have placed the negative on the 2, but as that value was must likely common among all the terms, I decided to place it on the 5. The same goes for " − 90y. " I placed the negative there on the 5 once more.
− 90y = 2 [tex]*[/tex] - 5 [tex]*[/tex] 3 [tex]*[/tex] 3 [tex]*[/tex] y
The terms common among each term are 2 and y. Therefore, the GCF ( greatest common factor ) is 2x. Let's now factor the expression using this value.
2y( x³ + 9x - 5x² - 45 )
Part B : Let's simply factor this entire expression. Of course starting with the " factored " expression : 2y( x³ + 9x - 5x² - 45 ),
[tex]2y\left(x^3+9x-5x^2-45\right)[/tex] - Factor out " [tex](x^3+9x-5x^2-45\right))[/tex] " by grouping,
[tex]\left(x^3-5x^2\right)+\left(9x-45\right)[/tex] - Factor 9 from 9x - 45 and x² from x³ - 5x²,
[tex]9\left(x-5\right)+x^2\left(x-5\right)[/tex] - Factor out common term x - 5,
[tex]\left(x-5\right)\left(x^2+9\right)[/tex] - And our solution is thus 2y( x - 5 )( x² + 9 )
Find the value of x that makes s and t parallel.
3.
3(x-8)"
2(x + 10)"
I
Answer:
x=44
Step-by-step explanation:
If the lines were parallel, then those two angles would be equal since they are alternate interior angles. So:
3(x-8)=2(x+10)
3x-24=2x+20
x=44
Hope this is helpful! :)
Answer:
x=36.8
Step-by-step explanation:
We know that the two angles given are supplementary so we can do:
3(x-8)+2(x+10)=180
Then we simplify.
3x-24+2x+20=180
Simplify
5x-4=180
Combine like terms
5x-4=180
+4 +4
5x=184
Divide to make it x alone.
5x=184
/5 /5
x = 36.8
I hope this helped
Question: Using substitution, identify the ordered pair that is not an element of the solution set of the system of equations. 3x − y = 2 6x − 2y = 4 Answers: (1, 1) (−2, −4) (0, −2) (2, 4)
Answer:
(-2, -4)
Step-by-step explanation:
3(-2) - -4 = -2, so it doesn't work.
both equations are the same line
PLEASE HELP! WILL MARK BRAINLIEST! 13 POINTS! THX! Two bicycles are driving on the circle in the same direction with speeds of 9 mph and 5 mph respectively. How many points are there on the circle where the two bicycles meet.
Answer
The points where the two bicycles meet after every 6hr at 30 miles and 54 miles.
Solomon needs to justify the formula for the arc length of a sector. Which expression best completes this argument?The circumference of a circle is given by the formula , where d is the diameter.Because the diameter is twice the radius, .If equally sized central angles, each with a measure of , are drawn, the number of sectors that are formed will be equal to _____.The arc length of each sector is the circumference divided by the number of sectors, or .Therefore, the arc length of a sector of a circle with a central angle of is given by or ... help please
Answer:
[tex]\frac{360}{n}[/tex]
Step-by-step explanation:
Given:
The above statements
Required
Complete the above statements
Considering the third statement in the question;
First, it should be noted that a circle is a full sector that measures 360 degrees
Assuming the circle is divided by a central angle of 180, the number of sectors formed will be;
[tex]\frac{360}{180} = 2\ sectors[/tex]
Further assume the circle is divided by a central angle of 90, the number of sectors formed will be;
[tex]\frac{360}{90} = 4\ sectors[/tex]
Similarly, if the circle is divided by a central angle of n, the number of sectors formed will be;
[tex]\frac{360}{n}[/tex]
Hence, from the list of given options; [tex]\frac{360}{n}[/tex] fills the gap correctly
Answer:
360/n
Step-by-step explanation:
The diagonals of a parallelogram are 24 meters and 40 meters and
intersect at an angle of 60o. Find the length of the longer side.
Answer:
28 m
Step-by-step explanation:
The longer side can be found using the Law of Cosines. The semi-diagonals are of length 12 and 20 m, and the angle between them facing the long side is 180° -60° = 120°.
c^2 = a^2 +b^2 -2ab·cos(C)
c^2 = 12^2 +20^2 -2·12·20·cos(120°) = 144 +400 +240 = 784
c = √784 = 28
The longer side is 28 meters.
how do you solve this
Answer:
[tex](a).\:\:\int _1^{-1}3f\left(x\right)dx\:=-12[/tex] is the final answer.
Step-by-step explanation:
See the attachment below.
Best Regards!
In circle C, what is mArc F H?
Answer:f
Step-by-step explanation:
Answer: 31 degrees
Step-by-step explanation:
Which logarithmic graph can be used to approximate the value of y in the equation 2y = 5? (5 points) The graph of function f of x equals negative log base 2 of x The graph of function f of x equals negative log base 2 of x, plus 3 The graph of function f of x equals log base 2 of x, plus 3 The graph of function f of x equals log base 2 of x
Answer:
Step-by-step explanation:
Taking the base 2 log of both sides, we get:
log-base 2 of 2 + log-base 2 of y = log-base 2 of 5, or
2 + log-base 2 of y = approx. 2.3, or
log-base 2 of y = approx 2.3 - 2, or
log-base 2 of y = approx 0.3
Please, if you are given a graph or graphs, share them along with all instructions for the problem at hand. Thank you.
Determine the constant of proportionality in the situation below. Six bags of sunflower seeds cost $7.20
Answer:
1.20 for each bag of sunflower seeds
Step-by-step explanation:
Answer: $1.20 per bag
Step-by-step explanation:
[tex]\dfrac{\$7.20}{6\ bags}\div \dfrac{6}{6}\quad = \quad \dfrac{\$1.20}{1\ bag}[/tex]
Mikel has a chance to win a trip on a TV game show. All he has to do is win the "Shopping Game". In this game, Mikel is shown six grocery store items without being shown the prices. He must buy multiples of items until he has a total between $20 and $21 inclusive. If he doesn’t reach $20 with his first item, he continues buying items and adding to his total, until he either wins by getting an amount between $20 and $21, or he loses by going over $21 or by buying all items and being less than $20. First, Mikel buys six bottles of shampoo.
Write a compound inequality
Answer: $20 <= X < = $21
Step-by-step explanation:
According to the question, you are told that he loses by going over $21 or by buying all items and being less than $20.
That means the total amount of the items bought must be equal to 20 dollars or 21 dollars or be within the two amount of money.
If Mikel buys six bottles of shampoo, let x represent the total amount for the six bottles of shampoo. Then, the compound inequalities for this expression will be x less than or equal to 21 dollars and x greater than or equal to 20 dollars. That is,
$20 <= X < = $21
which sentence is represented by this algebraic equation "X/2-3=15"
Answer:
A
Step-by-step explanation:
The correct answer is A.
"3 less than" represents -3
"half of x" represents x/2
"is 15" represents =15
100 POINTS!!! Match each pair of points with the approximate distance between them. Round your answers to the nearest tenth. 7.07 units 5.1 units 2 units 2.83 units 5.39 units 13.15 units 12.5 units (3, -1) and (5, 4) (2, 3) and (4, 5) (-5, 7) and (8, 5) (-2, 4) and (3, -1)
Answer:
(3, -1) -> (5, 4) = √29 or 5.38516
(2, 3) -> (4, 5) = 2√2 or 2.82843
(-5, 7) -> (8, 5) = √173 or 13.1529
(-2, 4) -> (3, -1) = 5√2 or 7.07107
Step-by-step explanation:
Distance Formula: [tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Simply plug the coordinates into the distance formula:
[tex]d=\sqrt{(5-3)^2+(4+1)^2} = \sqrt{29}[/tex]
[tex]d=\sqrt{(4-2)^2+(5-3)^2} = 2\sqrt{2}[/tex]
[tex]d=\sqrt{(8+5)^2+(5-7)^2} = \sqrt{173}[/tex]
[tex]d=\sqrt{(3+2)^2+(-1-4)^2} = 5\sqrt{2}[/tex]
To get the decimals, we evaluate the square roots:
√29 = 5.38516
2√2 = 2.82843
√173 = 13.1529
5√2 = 7.07107
Answer:
d = √[(x₂ - x₁)² + (y₂-y₁)²]
(3, -1) and (5, 4)
√(5−3)²+(4-(-1)²
√(2)²+(5)²
√4+25
√29 = 5.385164807134504 = 5.39
(2,3) and (4,5)
√(4-2)v+(5−3)²
√(2)²+(2)²
√4+4
√8 ≈2.8284271247461903 = 2.83
(-5, 7) and (8,5)
√(8−−5)²+(5−7)²
√(8++0)2+(5−7)²
√(13)²+(−2)²
√169+4
√173 ≈ 13.152946437965905 = 13.15
(-2, 4) and (3, -1)
(3− −2)²+(−1−4)²
√(3++0)²+(−1−4)²
√(5)² + (−5)²
√25+25
√50 ≈ 7.0710678118654755 = 7.07
*PLEASE ANSWER* Which of the following is not a step in finding the area of an unknown figure? a.) Expand the figure and stretch it to the form of a known figure. b.) Divide the figure into smaller, known figures. c.) Add up the areas of the smaller figures. d.) Calculate the areas of the smaller figures.
Answer:
a.) Expand the figure and stretch it to the form of a known figure.
Step-by-step explanation:
"Option a" is the correct one for finding the area of unknown figure we don't expand and stretch the figure to form a known figure.
Steps for finding the area of unknown figureTo find the area of unknown shapes, first , we need to divide the unknown shapes into regular shapes that you can recognize such as triangles, rectangles, circles, squares and so forth.
Then find the area of these individual shapes and add them to get an area of unknown shapes.
According to the given question
We have to find the step which is not required for finding the area of unknown figures
"For finding the areas of unknown figure we don't need to stretch it to form a known figure" because if we expand and stretch the figure it's dimensions will get change so that the area will also gets change.
Hence," option a" is not a step in finding the area of unknown figure.
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IV
What is the range of the function on the graph?
5
4+
3+
all real numbers
O all real numbers greater than or equal to 0
all real numbers greater than or equal to 1
all real numbers greater than or equal to 2
2+
1 +
-5 4 -3 -2 -11
1 2 3 4 5 X
h
-27
-37
I
-4
-5
Which of the follow is the best representation for the cross-section?
(a)
(b
(c)
Answer:
A
Step-by-step explanation:
HELP ASAP!!! Alex bought a notebook containing 96 pages, and numbered them from 1 through 192. Bob tore out 25 pages of Alex’s notebook, and added the 50 numbers he found on the pages. Could Bob have gotten 2012 as the sum? Show your logic steps on how you draw your conclusion.
=====================================================
Explanation:
Page 1 is labeled with 1 and 2, which sum to 1+2 = 3
Page 2 is labeled with 3 and 4 which sum to 3+4 = 7
Page 3 is labeled with 5 and 6 which sum to 5+6 = 11
and so on until we reach
Page 96 is labeled with 191 and 192, which sum to 191+192 = 383
Note how each page has an odd page number label and an even number label (odd on the front side; even on the back side). Adding any odd number to an even number will result in an odd number. We can prove it as such
x = some odd number = 2m+1, m is any integer
y = some even number = 2n, n is an integer
x+y = 2m+1+2n = 2(m+n)+1 = some other odd integer because it is in the form 2p+1 with p = m+n as an integer
This explains why the results 3,7,11,..,383 are all odd.
------------------------
So we effectively have this set of values {3,7,11,...,383}. This is an arithmetic sequence with 3 as the first term and 4 as the common difference.
If we add two odd numbers together, we get an even number (proof is similar to one shown above)
odd + odd = even
But if we add in another odd number, then we'll go back to an odd result
odd + odd + odd = odd
If we have an odd number of odd numbers added up, then the result will be odd. In this case, we're adding 25 values from the set {3,7,11,...,383}. The value 25 is odd, so we have an odd number of values from {3,7,11,...,383} being added up. Therefore, the result Bob will get will always be odd. There is no way to get a sum of 2012 because this value is even.
HELLPPPPPApart from vehicle insurance, there are several other types of insurance such as life insurance, homeowner’s insurance, etc. The coverages for these types of insurances are mostly the same.
Answer:
Banks require home insurance all the way until the house is payed off. This also goes as far as things like taxing, government funding, and collecting money.
Brendon is walking home from a place that is 1.5 miles away. The function y = 7,920 − 270x represents Brendon’s distance in feet from home, y, in relation to the number of minutes he walks, x. Bryan is also walking home. Every 15 minutes, he writes down the number of feet left to reach home, as shown in the table.
Minutes
Feet
0
8,000
15
3,800
Which statements about this situation are true?
Brendon walks faster.
Bryan walks faster.
Brendon and Bryan walk at the same speed.
Brendon was farther away from home when he started walking.
Bryan was farther away from home when he started walking.
Brendon and Bryan were an equal distance from home when they started walking.
Answer:
Bryan walks faster
Bryan was farther away from home when he started walking.
Step-by-step explanation:
Given the following :
Brendon's distance in feet from home 'y' in relation to the number of minutes walked 'x'
y = 7,920 − 270x
For bryan:
Minutes (x) - - - 0 - - - - - 15
Feet ( y) - - 8000 - - - 3800
General form of a linear equation :
y = mx + C
m = gradient / slope
m = (y2 - y1) / (x2 - x1)
m = (3800 - 8000) / (15 - 0)
m = -4200 / 15 = - 280
Intercept 'c' = 8000 (where line intersect the y axis), (since y = 8000, when x = 0)
Therefore,
Bryan's model:
y = 8000 - 280x
Comparing both functions :
Bryan has a greater speed ( from the gradient)
Bryan was farther away from home when he started walking ( intercept )
Answer:
Answer:
Bryan walks faster
Bryan was farther away from home when he started walking.
Step-by-step explanation:
Given the following :
Brendon's distance in feet from home 'y' in relation to the number of minutes walked 'x'
y = 7,920 − 270x
For bryan:
Minutes (x) - - - 0 - - - - - 15
Feet ( y) - - 8000 - - - 3800
General form of a linear equation :
y = mx + C
m = gradient / slope
m = (y2 - y1) / (x2 - x1)
m = (3800 - 8000) / (15 - 0)
m = -4200 / 15 = - 280
Intercept 'c' = 8000 (where line intersect the y axis), (since y = 8000, when x = 0)
Therefore,
Bryan's model:
y = 8000 - 280x
Comparing both functions :
Bryan has a greater speed ( from the gradient)
Bryan was farther away from home when he started walking ( intercept )
Step-by-step explanation:
please hurry! ill give brainliest to the fastest answer!
Which expression would the model be most helpful in solving?
An area model has 5 shaded parts and 1 unshaded part. The shaded part is labeled 5/6.
A. 1/6 ÷ 5/6
B. 5/6 ÷ 1/6
C. 6 ÷ 1/6
D. 6 ÷ 5/6
5/6 divided 1/6, this is the correct answer
:))))
Answer:
5/6 ÷ 1/6
Step-by-step explanation: