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BaLLatris [955]
2 years ago
7

Write a sequence that has three arithmetic means between 35 and 45

Mathematics
1 answer:
klasskru [66]2 years ago
5 0
45 - 35  = 10 
so we divide by 4  10/4 = 2.5 
The sequence is  35, 37.5, 40, 42.5, 45
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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
Can someone help me!?!?
amm1812

It's the first step.4x-x-2+6=6x+16     ##substract 2 rather an add 2

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5 0
2 years ago
Find the recipricol of -b/3
Licemer1 [7]

Answer:

-0.333333333

Step-by-step explanation:

7 0
2 years ago
Which is a factor of 54xy+45x+18y+15?<br> a) x-5<br> b)6y+5<br> c)6y+1<br> d)3y+5 ...?
tia_tia [17]
If you will simplify this expression you will get this (9x + 3)(6y + 5)
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4 0
3 years ago
Read 2 more answers
Please help me !!
kherson [118]
The second answer is D) it will increase 8 times
7 0
3 years ago
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