2 years ago

What is the circumference of a circle with a diameter of 5 feet use 3.14 for pi

Mathematics

1 answer:

MrMuchimi2 years ago

5 0

Answer:

15.7

Step-by-step explanation:

Circumference= πd

d= Diameter

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PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!!

steposvetlana [31]

Answer:

$m\angle E=58^o$

Step-by-step explanation:

we know that

In the right triangle DEF

$tan(E)=\frac{DF}{EF}$ ----> by TOA (opposite side divided by adjacent side)

$tan(E)=\frac{8}{5}$

$m\angle E=tan^{-1}(\frac{8}{5})=58^o$

5 0

2 years ago

You want to create a 99% confidence interval with a margin of error of .5. Assuming the population standard deviation is equal t

miss Akunina [59]

Answer:

Sample size minimum is 60

Step-by-step explanation:

given that you want to create a 99% confidence interval with a margin of error of .5.

The population standard deviation is equal to 1.5

i.e. $\sigma = 0.5$

Confidence level = 99%

Since population std deviation is known, we can use Z critical value for finding margin of error

Z critical value for 99% = 2.58

Margin of error = $2.58*\frac{1.5}{\sqrt{n} }$

Equate this to 0.5 and solve for n

$2.58*\frac{1.5}{\sqrt{n} }=0.5\\\sqrt{n} =7.74\\n =59.90\\n=60$

8 0

3 years ago

What is the answer i really need help (−3)3 + (5 − 2)4

Katarina [22]

The answer to your question is 3
Reasons : -9+ 3•4= -9+12= 3.

8 0

3 years ago

Point Mis the midpoint of AB. AM = 3x + 3, and AB= 83 – 6.

Ber [7]

Answer:

AM= Half of AB

or, 3x+3=(8x-6)/2

or, 6x+6=8x-6

or, 2x=12

Therefore,x=6

so,AM=3*6+3=21

So the units is 21

4 0

3 years ago

Read 2 more answers

Solve for x. Enter your answer below as a fraction in lowest terms, using the slash ( / ) as a fraction bar. Solve:

Pachacha [2.7K]

Answer:

x=21/40

Step-by-step explanation:

First get common denominators

3/8 *5 to top and bottom is now 15/40

3/20 *2 to top and bottom is now 6/40

isolate the X

x-15/40=6/40

+15/40 +15/40

x=21/40

7 0

3 years ago

Read 2 more answers