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3 years ago

true or false: one way to find how many feet the level increases in 30 minutes is to multiply 1/2 by 2/3

Mathematics

2 answers:

damaskus [11]3 years ago

5 0

Answer:

Step-by-step explanation:

ture

Natasha_Volkova [10]3 years ago

4 0

Answer:

false

Step-by-step explanation:

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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.

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3 years ago

Write an equation in slope-intercept form of the line that passes through the givin point and is parcel to the graph of the give

Serhud [2]

The answer is X=4.

It is both parallel to x=-3 and passes through (4,2)

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3 years ago

Eight 5 bills are worth 40

dmitriy555 [2]

Answer:

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2 years ago

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inessss [21]

Answer:

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3 years ago

Tutoring ABC charges $50 sign up fee plus $12 an hour . HW helps charge a $38 sign up fee plus $15 an hour . After how many hour

tamaranim1 [39]

Answer:

Step-by-step explanation:

Tutoring ABC - $50 sign up and $12 an hour

HW helps- $38 sign up and $15 an hour

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