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3 years ago

Please help me don't understand :(

Mathematics

1 answer:

qaws [65]3 years ago

8 0

Answer:

I think it's the last one. Sorry if I'm wrong

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1. There non-linear.

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What is the midpoint of a segment whose endpoints are (-3, -3) and (-13, -13)

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The midpoint of that segment is (-8,-8).

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4 years ago

If m∠A = m∠B and m∠A + m∠C = ∠D, then m∠B + m∠C = ∠D Which property is shown?

Ad libitum [116K]

Answer:

Substitution Property

Step-by-step explanation:

So we know that:

$m\angle A=m\angle B$

And we also know that:

$m\angle A+m\angle C=\angle D$

And by using a specific property, we get that:

$m\angle B+m\angle C=\angle D$

Essentially, we <em>substituted</em> B for A.

So, this is an example of the substitution property, where if two sides/angles are congruent, we can substitute them for each other.

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3 years ago

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4 years ago

Max built a rectangular Prism and a rectangular Pyramid using beach sand. The prism and the pyramid have the same base area and

vova2212 [387]

Answer:

Three times

Step-by-step explanation:

Given

Figures: Rectangular Prism and Rectangular Pyramid

Let the dimension of the prism be:

$l = length$

$w = width$

$h = height$

Amount of sand used is the volume (V1) and it is calculated using;

$V_1 = l * w * h$

$V_1 = lw h$

Since the pyramid has the same base area and height as the prism, the its dimension would be:

$l = length$

$w = width$

$h = height$

Amount of sand used is the volume (V2) and it is calculated using;

$V_2 = \frac{1}{3}*(lwh)$

So, we have:

$V_1 = lw h$

$V_2 = \frac{1}{3}*(lwh)$

Substitute lwh for V1 in the second equation

$V_2 = \frac{1}{3}V_1$

Multiply both sides by 3

$3 * V_2 = \frac{1}{3}V_1 * 3$

$3 * V_2 = V_1$

Reorder

$V_1 = 3 * V_2$

$V_1 = 3 V_2$

<em>Hence, the amount of sand used in building the prism is three times the amount of sand used in building the pyramid</em>

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3 years ago