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3 years ago

A tree is 64 feet away from a mirror. At the same time, a girl whose eyes are 5 feet

Mathematics

2 answers:

frutty [35]3 years ago

6 0

If your looking for the number w the Variable for 64, its 64f standing for “64 feet”

MrRissso [65]3 years ago

5 0

I thinkkkkkk 64 feet

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What is the perimeter of a square that has a side of (4x-3)

patriot [66]

Answer:

Step-by-step explanation:

the perimeter of a square that has a side of (4x-3) is ; 4(4x-3) = 16x-12

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3 years ago

What is the measure of ∠ D? 101° 112° 122° 111°

kifflom [539]

Answer:

101

Step-by-step explanation:

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3 years ago

Is (a-3)(2a^2 + 3a + 3) equivalent to 2(a^3 - 1.5a^2 - 3a - 4.5)

vovikov84 [41]

<h3>Answer: Yes they are equivalent</h3>

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

Work Shown:

Expand out the first expression to get

(a-3)(2a^2 + 3a + 3)

a(2a^2 + 3a + 3) - 3(2a^2 + 3a + 3)

2a^3 + 3a^2 + 3a - 6a^2 - 9a - 9

2a^3 + (3a^2-6a^2) + (3a-9a) - 9

2a^3 - 3a^2 - 6a - 9

Divide every term by 2 so we can pull out a 2 through the distributive property

2a^3 - 3a^2 - 6a - 9 = 2(a^3 - 1.5a^2 - 3a - 4.5)

This shows that (a-3)(2a^2 + 3a + 3) is equivalent to 2(a^3 - 1.5a^2 - 3a - 4.5)

4 0

2 years ago

Read 2 more answers

How do you do this?????

o-na [289]

$y = 2x - 9$

Step-by-step explanation:

Let's rewrite the given equation such that only y is on the left side and everything else on the right side:

$3x + 6y = -30 \Rightarrow 6y = -3x - 30$

Simplifying this by dividing by 6, we get

$y = -\frac{1}{2}x - 5$

This line has a slope of -1/2, which means that a line perpendicular to this has a slope of 2 (i.e., negative reciprocal). So we can write its equation as

$y = 2x + b$

This is the slope-intercept form of the equation of the line perpendicular to our given line. To complete this form, we need to find the value of b. Since this line passes through (1, -7), put these numbers into our equation to get

$-7 = 2(1) + b \Rightarrow b = -9$