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drek231 [11]
3 years ago
5

A diver begins at sea level and decends vertically at a rate of 2.5 feet per second. How long did the diver take to reach -15.6

feet?
Mathematics
1 answer:
NeTakaya3 years ago
3 0

15.6/2.5 = 6.24


it takes 6.24 seconds

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Melissa asked 10 students how many courses they have taken so far at her college. Here is the list of answers.
almond37 [142]

Answer:

Step-by-step explanation:

The question has asked who has taken fewer than 15 courses

There are 4 options that are fewer than 15: 10, 8, 8, 13

4/10  (10 is total number of options/students)

To find the percentage you...

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3 years ago
Could someone help me for this?
lina2011 [118]

Answer:

x = - \frac{5}{3} , x = \frac{5}{2}

Step-by-step explanation:

to find the points of intersection equate the 2 equations , that is

7x - 15 = 10 + 12x - 6x² ( subtract 10 + 12x - 6x² from both sides )

6x² - 5x - 25 = 0 ← factor the quadratic on left side

consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 6 × - 25 = - 150 and sum = - 5

the factors are - 15 and + 10

use these factors to split the x- term

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(2x - 5)(3x + 5) = 0

equate each factor to zero and solve for x

3x + 5 = 0 ⇒ 3x = - 5 ⇒ x = - \frac{5}{3}

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3 0
2 years ago
15 points- fill in the blank. One question. Please hurry!
geniusboy [140]

Answer:

(3-2h)^3 + (3-2h)^4 = (3-2h^2)^3 (1 + (3-2h^2))

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4 years ago
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If x = 4 and y = 7 , evaluate the following expression: 100 − 3 ( 3 y − 4 x
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Answer:

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3 years ago
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4x-2y=14
Blababa [14]
4x - 2y = 14
y = 0.5x -1

Get just one variable on one side for both equations.

4x - 2y = 14 ⇒ 4x = 2y + 14 ⇒ 4x - 14 = 2y
y = 0.5x - 1 ⇒ x - 2 = 2y

Use the transitive property and then solve for x.

x-2 = 4x-14
12 = 3x
x = 4

<em>Edit: Apprently I didn't use substitution. Oops! Sorry...</em>
4 0
3 years ago
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