3 years ago

What is the solution -1 -7 ?

Mathematics

1 answer:

Effectus [21]3 years ago

3 0

Answer:

-8

Step-by-step explanation:

Add the two numbers but maintain the negative sign.

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Organization is the key to an effective speech. Proper organization allows for a logical flow of words and ideas in a speech, ma

GREYUIT [131]

Answer:

This seems more like an answer then a question, did you perhaps mean to put this on someone elses question?

Step-by-step explanation:

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2 years ago

In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.

slamgirl [31]

<u>Answer:</u>

Angle A = 39°

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

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

$b^2 = a^2 + c^2- 2a*c*cos(120)$

$b^2 = 81 + 25 - 2*9*5*(-0.5)$

$b=\sqrt{151}$

Now finding angle A using law of cosine:

$cos(A) = \frac{b^2+c^2-a^2}{2b*c}$

$cos(A) = \frac{151+25-81}{2*12.29*5}$

$cos A=0.7730$

$A=39.38$

Therefore, the measure of angle A = 39°.

7 0

3 years ago

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the sum of two numbers is 44. the smaller number is five-sixths of the larger number. what are the numbers?

Sindrei [870]

X+y=44
x=5/6y

x+y=44
5/6y+y=44
11/6y=44
11y=264
y=24
x=5/6y=(5/6)*24=20
Answers: numbers are 20, 24

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3 years ago

What is the altitude of a rhombus if its area is 10 square meters and the length on one side is 2.5 meters?

Elan Coil [88]

10/2.5= 4 the answer is 4 meters because you just divide them.

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3 years ago

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Factor: d2 + 16dm + 64m2

lutik1710 [3]

Answer:

$(d + 8m)^2$

Step-by-step explanation:

$d^2 + 16dm + 64 m^2 = (d + 8m)^2$

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3 years ago

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