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Rina8888 [55]
3 years ago
8

Someone help me with this plss​

Mathematics
1 answer:
ladessa [460]3 years ago
3 0
2.57 + 5x = 25.92 is the equation and when you solve for x you would get x = 4.67
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Law of cosine. Please help
Anna35 [415]

Answer:

B) 41.7

Step-by-step explanation:

Let a=25, b=32, and c=37. Use the Law of Cosines equation to find angle A=x which is directly across from side a:

\displaystyle \cos(A)=\frac{b^2+c^2-a^2}{2bc}\\ \\\cos(A)=\frac{32^2+37^2-25^2}{2(32)(37)}\\ \\\cos(A)=\frac{1024+1369-625}{2(1184)}\\\\\cos(A)=\frac{2393-625}{2368}\\ \\\cos(A)=\frac{1768}{2368}\\\\A=\cos^{-1}\biggr(\frac{1768}{2368}\biggr)\\ \\A\approx41.7^\circ

Therefore, the correct answer is option B, which means you were right!

5 0
2 years ago
The length of the radius of a bicycle wheel is 13 in. Which of the following is closest to the distance the wheel will travel in
chubhunter [2.5K]

Answer:

Step-by-step explanation:

r=13in

Perimeter of a circle is 2πr

P=2×22/7×13

P=81.71in.

If it will make 3 revolution then it will have move 3 times it perimeter

3×81.71

245.14in

The distance the wheel will traveled is 245.14in

4 0
3 years ago
Surface area of 12 inches x 5 inches x 8 inches
xeze [42]
Put 12*5*8 into your calculator. The answer is 480 inches^3
8 0
3 years ago
Read 2 more answers
Which of the following could be the ratio of the length of the longer leg of a 30 60 90 triangle to the length of its hypotenuse
yan [13]
For 30 60 90 triangles, the ratio of the side lengths is
\frac{1}{2} : \frac{ \sqrt{3} }{2} :1
where the first is the shorter leg, the second is the longer leg, and the third is the hypotenuse (the longest side that doesn't form a 90 degree angle)

so the ratio of the longer leg to the hypotenuse is <span>\frac{ \sqrt{3} }{2} :1
or
</span>\frac{ \frac{ \sqrt{3} }{2} }{1}
<span>which equals </span>\frac{ \sqrt{3} }{2}
6 0
3 years ago
The difference in elevation of a helicopter and a submarine is 18 1/2 meters. The elevation of the submarine is −7 3/4 meters. W
kumpel [21]
Correct answer is anime ok
7 0
3 years ago
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