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il63 [147K]
2 years ago
11

Prove that Cos4x=8Cosx -8Cosx​

Mathematics
1 answer:
harkovskaia [24]2 years ago
8 0
Please see the image attached

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A had $360 more than B. When A spent $144 and B spent half of his money, A had 6 times as much money as B, Find the ratio of the
Karolina [17]

Answer:

13:3

Step-by-step explanation:

A=x B=y

first; x= 360+y

later;x= 216+y

A:B

216+y: 1/2y = 6: 1

216+y/y÷2 =6/1

216+y = 3y

y = 108

first; x =360+y

360 +108

468

A:B = 468:108

13:3

3 0
3 years ago
Scale factor word problem<br> Someone please help me!
natima [27]

1. Niles is making a map of his neighborhood. He uses a scale in which 1 cm = 5 km. The distance between his house and the school is 8.5 km.

How many centimeters will there be between his house and school on the map?

1 cm = 5km

8.5 ÷ 5 = 1.7

There will be 1.7 centimeters between his house and school.

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3 years ago
you have a large tank filled with 175 gallons of water the tank springs a leak and water is pouring out at a rate of 5 gallons p
Len [333]
175/5= 35

The answer is 35 minutes.

Hope this helps!
3 0
3 years ago
Help ASAP. Write the linear equation in slope-intercept form given the following:
-Dominant- [34]

Answer:

y = -x + 8

Remember that the slope-intercept form had formula y = mx + b where m is the slope and b is the y-intercept.

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2 years ago
PLEASE HELP! DUE TODAY! TY!
lys-0071 [83]

Answer: 12 inches

Step-by-step explanation:

4 0
2 years ago
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