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kolbaska11 [484]
2 years ago
12

I need help asap with thissssssssssss

Mathematics
1 answer:
ycow [4]2 years ago
3 0

Answer:

D

Step-by-step explanation:

The domain is the x value which in this case would be the hours of training

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The sum of 2 numbers is 25. Their difference is 7. Find the numbers. Let x=1st number and y=2nd number
Alex Ar [27]

Answer:

x= 16 and y = 9

Step-by-step explanation:

1 st equation ; x+y = 25

2 nd equation ; x- y = 7

from 1 st equation

x = 25 - y

now putting value of x in 2 nd equation

x- y = 7

25 - y-y = 7

25 -2y =7

25-7 = 2y

18 = 2y

18/2 = y

y = 9

again

putting value of y in 1 st equation

x = 25-y

x = 25-9

x= 16

7 0
3 years ago
At gary’s grocery, 3 apples cost $2.85. at sally’s supermarket, 5 apples cost $4.85. which store offers a cheaper price per appl
Fiesta28 [93]
Gary's grocery store sells cheaper apples

3 0
3 years ago
1. Beginning with the equation x= -18, write the new equation produced by dividing both sides by $3.
Yuliya22 [10]
X/3=-6 is the correct answer
3 0
3 years ago
In a picture, there are 40 monkeys, and 60% of the monkeys are in the trees.
Zepler [3.9K]

The number of monkeys in the tree are 24.

<h3>What are percentages?</h3>

Percentage is the fraction of an amount expressed as a number out of hundred. The sign used to represent percentages is %.

<h3>How many monkey are in the tree?</h3>

Number of monkeys in the tree = percent x total number of monkeys

60% x 40

0.6 x 40 = 24

To learn more about percentages, please check: brainly.com/question/25764815

6 0
2 years ago
Use the definition mtan=lim
Leokris [45]

(a) mtan refers to the slope of the tangent line. Given <em>f(x)</em> = 9 + 7<em>x</em> ², compute the difference quotient:

\dfrac{f(x+h)-f(x)}h = \dfrac{(9+7(x+h)^2)-(9+7x^2)}h = \dfrac{(9+7x^2+14xh+7h^2)-9-7x^2}h = \dfrac{14xh+7h^2}h

Then as <em>h</em> approaches 0 - bearing in mind that we're specifically considering <em>h</em> <em>near</em> 0, and not <em>h</em> = 0 - we can eliminate the factor of <em>h</em> in the numerator and denominator, so that

m_{\rm tan} = \displaystyle \lim_{h\to0}\frac{f(x+h)-f(x)}h = \lim_{h\to0}\frac{14xh+7h^2}h = \lim_{h\to0}(14x+7h) = 14x

and so the slope of the line at <em>P</em> (0, 9), for which we take <em>x</em> = 0, is 0.

(b) The equation of the tangent line is then <em>y</em> = 9.

4 0
2 years ago
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