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3 years ago

I need help with question 6

Mathematics

2 answers:

Vilka [71]3 years ago

7 0

A. -14
B. 0
C. 6
D. 0

so the answer is D. 6
hope this helped

uranmaximum [27]3 years ago

4 0

B!!! Because they A equals -20, B equals 20, C equals 0, and D equals 0!

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vredina [299]

Answer:

$A = 4x^2 + 86x + 450$

Step-by-step explanation:

Given

$Walkway = x$

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$Width = 25$

Required:

The area of the swimming pool

Assume the walkway will be on the 4 sides of the swimming pool.

The total length (L) of the swimming pool will be:

$L = 18 + x + x$

$L = 18 + 2x$

The total width (W) will be:

$W = 25 + x + x$

$W = 25 + 2x$

The area (A) is:

$A = L * W$

$A = (18 + 2x) * (25 + 2x)$

Expand bracket

$A = 18 * 25 + 18 * 2x + 25 * 2x + 2x * 2x$

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Reorder

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3 years ago

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3 years ago

H E L P ! !

mihalych1998 [28]

Answer:

10.7cm

Step-by-step explanation:

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3 years ago

. A triangle has side lengths of 8, 7, and 14. To the nearest tenth of a degree find the measure of the angle opposite the side

4vir4ik [10]

Given:

The measure of three sides of a triangle are 8, 7 and 14.

To find:

The measure of the angle opposite the side of length 8.

Solution:

According to the Law of Cosine:

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Let a=8, b=7 and c=14, then by using Law of Cosine, we get

$\cos A=\dfrac{7^2+14^2-8^2}{2(7)(14)}$

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Taking cos inverse on both sides.

$A=\cos^{-1}\dfrac{181}{196}$

$A=22.561328$

$A\approx 22.6$

Therefore, the measure of the angle opposite the side of length 8 is 22.6 degrees.

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3 years ago

What’s the answer show your WORK Plz

Yuliya22 [10]

Answer:

732.7 I think

Step-by-step explanation:

You just multiply 28 by 26.17

3 0

3 years ago

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