Find the diameter of a circle with a circumference of 27 centimeters. Use 3.14. Round to the nearest tenth.

Answer: 2.5

Step-by-step explanation:

20/8=2.5

Answer:

do 20/8

Step-by-step explanation:

1 battery costs $2.50

Answer:

88,900

Step-by-step explanation:

:) hope this helps! give it a like!

Answer:

88,900

Step-by-step explanation:

you are rounding 88,855 to the nearest hundred so you really just need to look at the hundred's place

855 rounded to the nearest hundred is 900 (round your 8 to 9 since the tens place is a 5 or above)

Answer:

131.2 ;

12.8 ;

(118.4, 144)

Step-by-step explanation:

Given :

X = 131.2, s=55 , and n= 50

Point estimate of the mean :

Since, sample size is large (n > 30) ; the sample mean = population mean according to the center limit theorem :

Margin of Error = Zcritical * s / sqrt(n)

Zcritical at 90% = 1.645

Margin of Error : 1.645 * (55 / sqrt(50))

Margin of Error : 1.645 * 7.7781745

Margin of Error = 12.795097

Margin of Error = 12.8

The confidence interval (C.I) :

C.I = x ± margin of error

C. I = 131.2 ± 12.8

(131.2 - 12.8) ; (131.2 + 12.8)

(118.4, 144)

Answer:

$6000

Step-by-step explanation:

let's find the unit rate first

we know that 780 is 13% of all his sales so what we can do is find the unit rate

780/13=60 so 1% of all the money is $60

Now we just do simple multiplication; 60*100=6000

So the original sale was $6000

Hope this helped, have a good day!

Answer:

6000

Step-by-step explanation:

780/13 = 60 (100)

           = 6000

Answer:

x > -1/2 is the answer

Step-by-step explanation:

Answer:

1) x = 4

2) x = -4

Step-by-step explanation:

1) -2x - 12 + 18 = 11 - 3x

-2x + 7 = 11 - 3x

x = 4

2) x - 23 = 8x + 12 - 7

-7x - 23 = 5

-7x = 28

x = -4

Answer:

Mike's box of pencils contains 515 pencils.

Step-by-step explanation:

3% of 500 is 15. If we add that onto the original 500, we get 515.

Answer:

Step-by-step explanation:

1302 + 1202 = 502

Answer:

1302 + 1202 = 502

Step-by-step explanation:

Cant really explain. 1302 + 1202 = 502

Answer:

20²-(13²-5² )=y²

400-(169-25)=y²

400-144 =y²

256=y²

y=16

Step-by-step explanation:

In the diagram above is a 2 right angle triangles

the length of such diagrams is found using the pythagoras theorem.

in finding the length of the vertical by pythagoras gives..(13²-5²)^-2=12

Answer:

20

Step-by-step explanation:

when you subtract 2 from 6 you get 4. so you multiply 4 into 2 which give the answer 8. when you subtract 2 from 8 you get 6 and then you multiply 6 to 2 which gives the answer 12... next you subtract 2 from 12 which gives the answer 10. so you multiply 10 to 2 Which gives the final answer for you which is 20.

Mr. Mann asked his class to form a number pattern using the rules:

Use the number 6 as the first term.

To find the other term, subtract 2 from the previous term, then multiply by 2.

The first two numbers in the pattern are 6 and 8.

What is the fourth number in the pattern?

Answer:  131 cubic inches

=========================================

Work Shown:

Volume = length*width*height

Volume = 8.2*4.1*3.9

Volume = 131.118

Volume = 131 cubic inches

Answer:

2x+4

Step-by-step explanation:

remember the formula (a+b)^2=a^2+b^2+2ab

in this case, 4x^2 would be a^2, 16 would be b^2, and 16x would be 2ab

so, the variable a would be 2x and the variable b would be 4

so, you can turn 4x^2+16x+16 into (2x+4)^2

and since the area of a square is (one of its sides)^2, or in this case (2x+4)^2, the length of one side of the lawn will be 2x+4

problems where you have to use the (a+b)^2=a^2+b^2+2ab formula to turn trinomials into binomials squared are very common, so make sure to look out for questions like these and be ready to use this formula

Answer:

E

Step-by-step explanation:

so much words sis sossy

Answer:

Step-by-step explanation:

[tex]-3$<$ x\le 13[/tex]

Answer:x= 40

Step-by-step explanation:

x+80+60= 180 (angles on a straight line)

Answer:

17.3

Using the pythagorean theorem, 400-100=300.

Square root of 300.

Answer:

tbh the only answers that make sense is A. and C.

Step-by-step explanation:

I think I would go wit A. tho =) but it's up to u

Answer:

Yes/True

Step-by-step explanation:

The given expression is :

y = 12 x

We know that, Proportional means it has an equivalent ratio / constant rate of change / the same rate.

Here,

y ∝ x

12 is the constant of proportionality

Hence, the given expression is proportional.

Answer:

30%

Step-by-step explanation:

if 60% were thin mint and 10% were Samoas that is 70% of cookies. remaining 30% must be trefoils. hope this helps

Answer:

15

Step-by-step explanation: multiply 3x5 lol

Answer:

7

Step-by-step explanation:

18.33 - 8.6 = 9.73

Answer:

7

Step-by-step explanation:

18.33-8.60=9.73

Answer:

A

Step-by-step explanation:

1-0.045=0.955

Answer:

209.96

Step-by-step explanation:

we know that the circumference of the circle is equal to

C = [tex]\pi D[/tex]

we have

[tex]D = 64 ft[/tex]

substitute would be

[tex]C = \pi (64) = 64\pi ft[/tex]

assume that [tex]\pi = 3.14[/tex]

64[tex]64\pi = 64 * 3.14 = 200.96 ft[/tex]

Answer:

D. 21 m, 6 m, 10 m

Step-by-step explanation:

Answer:

D. 21m, 6m ,10m

Step-by-step explanation:

that is the correct answer

Answer:

5

Step-by-step explanation:

Half of ten is five  so Kate’s has five purple stickers

Answer:

when distributing the first equation 1/4(8y+24) it is actually 2y+6 because 1/4*24= 6 not 8

Step-by-step explanation: