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3 years ago

What does - 12/s - 5 - 9w use s =4 and w = 3 equal

Mathematics

1 answer:

qwelly [4]3 years ago

5 0

Your answer would be -35.

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. 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:

$\cos A=\dfrac{b^2+c^2-a^2}{2bc}$

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

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

$\cos A=\dfrac{49+196-64}{196}$

$\cos A=\dfrac{181}{196}$

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.

7 0

2 years ago

Plz tell me the answer

kari74 [83]

Answer:

1)6cm²

2)2

3)1000cm²

4)16x²+y²+8xy

8 0

2 years ago

I honestly don't even know where to start //// on his last 4 tests , Danilo scored 55% 78% 84% and 93%. What score should he get

skelet666 [1.2K]

Answer:

The answer to your question is He must get 80%

Step-by-step explanation:

Data

Scores 55%, 78%, 84%, 93% and X

Average 80%

Process

1.- Write a equation to solve this problem

- There are five scores

Score 1 = S1 = 55

Score 2 = S2 = 78

Score 3 = S3 = 84

Score 4 = S4 = 93

Score 5 = S5 = X

Equation

Average = (S1 + S2 + S3 + S4 + S5) / 5

- Solve for S5

5 Average = S1 + S2 + S3 + S4 + S5

S5 = 5 Average - S1 - S2 - S3 - S4

- Substitution

S5 = 5(80) - 55 - 78 - 84 - 93

- Simplification

S5 = 400 - 310

- Result

S5 = 90

5 0

3 years ago

Write 1/4x-3/4y=-1 in standard form work out need asap please

Zepler [3.9K]

The answer is x - 3y = -4

7 0

3 years ago

Which number line shows the solution of –5x + 10 > –15?

hram777 [196]

I had the similar test and got it right so it should be B

5 0

1 year ago