3 years ago

If you could help me from #15 Thanks

Mathematics

1 answer:

KatRina [158]3 years ago

7 0

I am sorry but I can not see this image. Sorry XD

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Help please? 10 points. Correctly

Romashka [77]

From the Figure :

Point A is (-3 , -3)

Point B is (6 , 6)

We know that, The Mid Point of Two Points (x₁ , y₁) and (x₂ , y₂) is given by :

$\mathsf{\implies [(\frac{x_1 + x_2}{2})\;,\;(\frac{y_1 + y_2}{2})]}$

$\mathsf{\implies Midpoint\;of\;Line\;AB\;is\;[(\frac{-3 + 6}{2})\;,\;(\frac{-3 + 6}{2})]}$

$\mathsf{\implies Midpoint\;of\;Line\;AB\;is\;[(\frac{3}{2})\;,\;(\frac{3}{2})]}$

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3 years ago

Given the figure below. What is the theorem or postulate that justifies triangle ABD congruent

Zina [86]

Answer:

SAS is the answer in my opinion

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3 years ago

A boat travels 432km in 24 hours how far can it travel in 16 hours?

pickupchik [31]

The answer is 288 km!

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3 years ago

Factor 27 + d^ 3completely.

Sedaia [141]

Answer:

(3+d)(9-3d+d^2)

Step-by-step explanation:

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3 years ago

CosA.cos2A.cos4A=sin8A/8sinA

alexgriva [62]

I assume you're supposed to establish the identity,

cos(A) cos(2A) cos(4A) = 1/8 sin(8A) / sin(A)

Recall the double angle identity for sine:

sin(2x) = 2 sin(x) cos(x)

Then you have

sin(8A) = 2 sin(4A) cos(4A)

sin(8A) = 4 sin(2A) cos(2A) cos(4A)

sin(8A) = 8 sin(A) cos(A) cos(2A) cos(4A)

==> sin(8A)/(8 sin(A)) = cos(A) cos(2A) cos(4A)

as required.

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3 years ago