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stepladder [879]
3 years ago
12

Help please im confused

Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0
<h3>Answer: The driver went over the speed limit.</h3>

==================================================

Explanation:

The table shows f = 0.8 for dry concrete road.

The skid mark is d = 90 feet long

Plug these values into the formula below. Use your calculator to simplify.

s = sqrt(30*f*d)

s = sqrt(30*0.8*90)

s = 46.4758

The car's speed was roughly 46.4758 mph

The car is over the 35 mph speed limit.

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Nicole finished her math assignment in 1/4 hours. Then she completed her chemistry assignment in 1/3 hours. How much more time d
olya-2409 [2.1K]

Answer:

1/12 more

Step-by-step explanation:

4 0
3 years ago
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Identify an equation in point-slope form for the line perpendicular to
Alchen [17]

Answer:

y - 9 = \frac{1}{2}(x +3)

Step-by-step explanation:

Given

Function; y = -2x + 8

Required

Find an equation perpendicular to the given function if it passes through (-3,9)

First, we need to determine the slope of:  y = -2x + 8

The slope intercept of an equation is in form;

y = mx + b

<em>Where m represent the slope</em>

Comparing  y = m_1x + b to y = -2x + 8;

We'll have that

m_1 = -2

Going from there; we need to calculate the slope of the parallel line

The condition for parallel line is;

m_1 * m_2 = -1

Substitute m_1 = -2

(-2) * m_2 = -1

Divide both sides by -2

m_2 =\frac{ -1}{-2}

m_2 =\frac{1}{2}

The point slope form of a line is;

y - y_1 = m_2(x - x_1)

Where (x_1,y_1) = (-3,9) and m_2 =\frac{1}{2}

y - y_1 = m_2(x - x_1)becomes

y - 9 = \frac{1}{2}(x - (-3))

Open the inner bracket

y - 9 = \frac{1}{2}(x +3)

<em>Hence, the point slope form of the perpendicular line is: </em>

<em />y - 9 = \frac{1}{2}(x +3)<em />

3 0
4 years ago
What is the value of |–3.25| ?
34kurt

<u>Answer:</u>

  • <em>3.25</em>

<u>Step-by-step explanation:</u>

<em>Rule: An absolute value will always be positive. </em>

<em>=> Referring to the rule, the absolute value of |–3.25| is 3.25.</em>

Hoped this helped.

BrainiacUser1357

3 0
3 years ago
Its upside down but what are the answers to all of the equations?
elena-14-01-66 [18.8K]

Answer: here I just fliped it

3 0
3 years ago
Read 2 more answers
Simplify the expression. (7x + 3) + (4x - 1) - (2x + 4)
Crazy boy [7]

Answer:

9x -2

Step-by-step explanation:

(7x + 3) + (4x - 1) - (2x + 4)

Distribute the minus sign

(7x + 3) + (4x - 1) - 2x - 4

Combine like terms

7x+4x-2x   +3 -1-4

9x                -2

3 0
3 years ago
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