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4 years ago

Once again co sines . Please help me and include explanation with a clear answer

Mathematics

1 answer:

vladimir1956 [14]4 years ago

8 0

Using the law os cosines formula b^2 = a^2 + c^2 - 2*a*c*cos(B)

a = 17, b = 8, c = 16

8^2 = 17^2 + 16^2 - 2*17*16* cos(B)

64 = 289 + 256 - 544 * cos(B)

544*cos(B) = 289 + 256 - 64

544 * cos(B) = 481

cos (B) = 481/544

B = arccos(481/544)

B = 27.8 degrees

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Which properties are used in multiplying polynomials together?

meriva

Answer:

we use distributive property.

Step-by-step explanation:

for example:

4(5x+7)=

4x5x=20x

4x7=28

so the answer is:

20x+28

hope this helps : )

4 0

3 years ago

What is the porosity of the gravel sample?(The sediment volume for each sample is 400ml. ) a. 23. 75% b. 28. 75% c. 55. 75% d. 8

Anna [14]

The porosity of the gravel sample is 28.75%

We have to determine.

What is the porosity of the gravel sample?

<h3>The porosity of the gravel sample;</h3>

Porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.

The formula used to calculate the Porosity is;

$\rm Porosity =\dfrac{Volume \ of \ voids \ present \ in soil}{Volume \ of \ soil}$

A sponge is a case of a permeable fabric because it incorporates a huge number of purge spaces compared to its volume.

Porosity is the property of a question that communicates the entire volume of purge or pore space within the material.

Hence, the porosity of the gravel sample is 28.75%

Learn more about "porosity" :

brainly.com/question/2593663

4 0

2 years ago

a diver descended 84 feet in 6 minutes. What was the divers change in depth per minute? Write and expression with a solution

Ilia_Sergeevich [38]

Answer:

14 depth per minute

Step-by-step explanation:

84/6 = 14

5 0

3 years ago

During a game, a basketball team scored 38 points worth of two-pointers, 33

Snezhnost [94]

Answer:

185 Points

Step-by-step explanation:

38 x 2 = 76

33 x 3 = 99

8 x 1 = 8

78 + 99 + 8 = 185

8 0

3 years ago

Read 2 more answers

There are 3 consecutive integers such that the sum of the 2 smallest integers is 17 less than three times the largest. What is t

RSB [31]

Answer:

X + (X+1) +(X+2)

(X+(X+1)) = 3 *(X+2) + 17

2X +1 = 3X + 6 +17

X = -22

So the three integers are -22 -21 and -20

Double-Check *******************

(-22 -21) = 3 * (-20)

-43 = -60 +17

Step-by-step explanation:

8 0

3 years ago