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il63 [147K]
1 year ago
11

Prove that Cos4x=8Cosx -8Cosx​

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

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Decide which of the described variables likely have a normal or near-normal distribution. A) The amount of change held by a teac
Nataly [62]

Answer:

A) The amount of change held by a teacher at the end of each day for a year.

Step-by-step explanation:

A normal distribution has a bell-shaped density curve described by its mean and standard deviation.

A) The amount of change held by a teacher at the end of each day for a year - This is probably near normal because the teacher cannot have negative cents in her or his pocket.

6 0
3 years ago
During the first seconds after takeoff, a rocket traveled 208 kilometers in 50 minutes at al
lukranit [14]

Answer:

The rocket has a faster unit rate and is 219\ km/h much faster than the penny

Step-by-step explanation:

Find the unit rate of each object and the compare the results

step 1

Find the unit rate per hour of the rocket

To find the unit rate divide the total distance by the time

Let

d -----> the distance in km

t -----> the time in hours

we have

d=208\ km

t=50/60=5/6\ h

Find the unit rate

208/(5/6)=208*6/5=249.6\ km/h

step 2

Find the unit rate per hour of the penny

To find the unit rate divide the total distance by the time

Let

d -----> the distance in km

t -----> the time in hours

we have

d=153\ km

t=5\ h

Find the unit rate

153/5=30.6\ km/h

step 3

Compare the unit rates

The units rate of rocket is 249.6\ km/h

The unit rate of penny is 30.6\ km/h

Find the difference

249.6-30.6=219\ km/h

therefore

The rocket has a faster unit rate and is 219\ km/h much faster than the penny

8 0
3 years ago
8^6 divided by 8 simplified?? :)
mr_godi [17]

Given: 8^6/8

Answer:32768

Step by step explanation:

  • To find we must use, PEMDAS, order of operations. (Parenthesis, exponents, multiplication, division, addition, and subtraction.
  • Since we have no parenthesis we do exponents first
  • Since we are dividing we do 8^6-1 divided by 8
  • The value of 8^6 is 262144
  • Now we divide 252144 by 8 which gives us 32768
  • Therefore, our answer is 32768

#LearningIsFun

8 0
2 years ago
You pick a card, roll a die, and find the sum. How many different sums are possible?​
Whitepunk [10]
Answer : 6

step by step: there’s six sides to a dice
3 0
3 years ago
I need help with this
adelina 88 [10]
Y=4^x-3 translated down 3 units
y=4^x+3 translated up 3 units
y=-4^x-3 translated down 3 units and vertical reflection
y=-4^x+3 translated up 3 units and verticals reflection
3 0
3 years ago
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