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nignag [31]
2 years ago
5

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 56 miles per hour. Then, in t

he second hour, she traveled at a speed of 72 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent.
Mathematics
1 answer:
RUDIKE [14]2 years ago
4 0

Answer

128

Step-by-step explanation:

72+56=128

You are welcome

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Julia has 3 ribbons that are 12 inches each. how many 4 inch sections can she cut from the ribbon.
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Total length of all ribbons = 12 * 3 = 36 inch

Then, number of ribbons = 36/4 = 9

In short, Your Answer would be: 9 sections

Hope this helps!
6 0
3 years ago
If a and b are two angles in standard position in Quadrant I, find cos(a+b) for the given function values. sin a=8/17and cos b=1
n200080 [17]

Recall the sum identity for cosine:

cos(a + b) = cos(a) cos(b) - sin(a) sin(b)

so that

cos(a + b) = 12/13 cos(a) - 8/17 sin(b)

Since both a and b terminate in the first quadrant, we know that both cos(a) and sin(b) are positive. Then using the Pythagorean identity,

cos²(a) + sin²(a) = 1   ⇒   cos(a) = √(1 - sin²(a)) = 15/17

cos²(b) + sin²(b) = 1   ⇒   sin(b) = √(1 - cos²(b)) = 5/13

Then

cos(a + b) = 12/13 • 15/17 - 8/17 • 5/13 = 140/221

6 0
2 years ago
If you have 26 ounces of chicken how many people can you feed
IRISSAK [1]

Answer:

between 8 and 9

Step-by-step explanation:

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6 0
3 years ago
Simplify: 2 1/2t+1 1/4t+5u–u​
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Answer:

15t/4 + 4u

Step-by-step explanation:

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8 0
3 years ago
Solve the equation for v<br> <img src="https://tex.z-dn.net/?f=y%3D%5Cfrac%7B8%7D%7Bav%7D%20%2B7" id="TexFormula1" title="y=\fra
My name is Ann [436]

Answer:

v = \dfrac{8}{a(y - 7)}

Step-by-step explanation:

y = \dfrac{8}{av} + 7

Subtract 7 from both sides.

y - 7 = \dfrac{8}{av}

Multiply both sides by v.

v(y - 7) = \dfrac{8}{a}

Multiply both sides by 1/(y - 7).

v = \dfrac{8}{a(y - 7)}

3 0
3 years ago
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