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weeeeeb [17]
2 years ago
12

This stuff confuses me

Mathematics
2 answers:
ANEK [815]2 years ago
8 0
11. Parallel lines have the same slope, so the slope of EF is the same as the slope of CD. The slope of CD is found as
.. slope = (difference of y coordinates)/(difference of x coordinates)
.. = (9 -1)/(-1 -(-7)) = 8/6 = 4/3
The slope of EF is ...
.. B. 4/3

12. The perpendicular line is vertical. Its slope is ...
.. D. undefined
Slav-nsk [51]2 years ago
6 0
It's slope would be undefined.
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A diving board is 10 feet above the surface of the water. At time t = 0, the board propels Chris upward at a rate of 12 feet per
Art [367]

Answer:

Chris will take 0.75 seconds to return to his starting height of 10 feet.

Step-by-step explanation:

Let the height of Chris be represented by h(t) = -16\cdot t^{2}+12\cdot t +10, where h(t) is the height in feet and t, the time in seconds. First, we equalize the formula to a height of 10 feet and simplify the resulting expression, that is:

-16\cdot t^{2}+12\cdot t +10 = 10

-16\cdot t^{2}+12\cdot t = 0

Then, we simplify the expression by algebraic means:

-16\cdot t\cdot \left(t-\frac{3}{4} \right) = 0

Roots of the polynomial are, respectively:

t = 0\,s\,\lor \,t = 0.75\,s

First root represents the initial height of Chris, whereas the second one represents the instant when Christ returns to the same height above the surface of the water. Hence, Chris will take 0.75 seconds to return to his starting height of 10 feet.

5 0
2 years ago
Yesterdays summer read 75 pages of her book if she reads at a pace of two pages per minute today which table shows only viable s
rjkz [21]

Answer:

D

Step-by-step explanation:

Nobody read backwards for 16 minutes

4 0
2 years ago
Read 2 more answers
For the right triangle shown, the lengths of two sides are given. Find the third side. Leave your answer in simplified, radical
KATRIN_1 [288]

The Pythagorean theorem tells you

... a² + b² = c²

so

... a² = c² - b² = 16² - 9² = 256-81 = 175

... a = √175 = √(25·7)

... a = 5√7

4 0
3 years ago
The perimeter of quadrilateral JKLM is 90 centimeters. Which is the length of side KL?
fenix001 [56]
The perimeter of an object is given by the sum of all the sides of the object. Thus the perimeter of a quadrilateral is the sum of the four sides of the quadrilateral.

Given a quadrilateral with sides: n, 2n - 12, 3n + 4, n + 7

The sum is n + 2n - 12 + 3n + 4 + n + 7 = 7n - 1 = 90

Thus, 7n = 90 + 1 = 91 and n = 91 / 7 = 13.

Therefore, the length of the side KL is n = 13 centimeters.
5 0
3 years ago
Merv’s Magic Shop has $56,000.00 in assets and $14,000.00 in liabilities. Merv’s current financial ratio is
Gnom [1K]
4:1.

56,000÷2 = 28,000

14,000÷2 = 7,000

28,000/7,000 = 28/7

28 ÷ 7 = 4
---- -----
7 ÷7 = 1

4:1

Hope this helps!
6 0
2 years ago
Read 2 more answers
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