The circular opening of a tunnel
has a circumference of 42
meters. Which equation can be
used to find d, the diameter of
the tunnel opening?

Answers

Answer 1

Answer:

2(21/pi)=d

Step-by-step explanation:

The formula for a circumference is C=2(pi)(r) in this case we know our circumference is 42 meters so 42=2(pi)(r), we must leave our radius by itself so we divide by 2 to get 21=pi(r) we then also divide by pi which will get us 21/pi=r and we know that the diameter is double of the radius so we just double which will then be 2(21/pi)=d


Related Questions

2+2(8)-12=
whats the answer?

Answers

Answer:

2 + 2(8) - 12 =?

2 + 16 - 12 =?

2 + 4 = 6.

Answer:

[tex]2 + 2(8) - 12 \\ = 2 + 16 - 12 \\ = 2 + 4 \\ = 6 \\ \\ 6 \: is \: the \: correct \: answer[/tex]

Hope it helps!

What’s the answer to this

Answers

Answer:

p=$65 per day so how many days? you multiply 65 by how ever many days that there is so

Step-by-step explanation:

p=$65 per day so how many days? you multiply 65 by how ever many days that there is so  that would be your answer

the age of three sibling leon,kelly,and jack are in the ratio 3: 5: 6:. the sum of their age is 42 years.how old is kelly?​

Answers

Kelly would be 32 years old

AY YOOO HELP MEH. PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSssssssssssssssssSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

Answers

Answer:

Number 1 is 10

number 2 is D (6 to the second power)

Step-by-step explanation:

Step-by-step explanation:

the first answer is 10

the second answer is evaluate 6 squared


Ball thrown straight up
H(x)=64x-16xSquared


How do you find the value of x when the ball reached its maximum height.

Answers

Answer:

x = 2

Step-by-step explanation:

H(x) = 64x - 16x²

Find the value of x when the ball reaches its maximum height.

Since the largest degree in this equation is two, this function represents a parabola. We can find the maximum height of the ball at the vertex of the quadratic.

In H(x) = 64x - 16x², rearrange the powers from greatest to least:

a = -16b = 64c = 0

Vertex: [-b/2a, f(-b/2a)]

Substitute a and b into the x-value of the vertex: -b/2a.

-(64)/2·(-16) -64/-32 2

The vertex of the parabola is at x = 2, with a maximum height of H(2).

Evaluate the algebraic expression 3f + g,when f = 6, g = 8, h = 12 and j = 2

Answers

3(6)+8=26
I think 26 is the answer


PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answers

Answer:

I think it is the first one NOQ AND MLJ

help please. need it asap

Answers

Answer:

x = 180 - 50 - 86 = 44°

Paige and her family went to the movies. They bought 4 tickets and paid $12
for popcom. They spent $40. How much did each ticket cost?
Choose two answers: one for the equation that models this situation and one
for the correct answer.
A. Answer:$3
B.Equation:12+4x=40
C. Equation:4+12x=40
D. Answer:$7

Answers

Answer:

D. $7

Step-by-step explanation:

i think it would be "D". the reason why i chose that answer is because first of all the total they spent is $40 right? as we see in this equation, paige and her family purchased $12 for popcorn. what does that mean? it means that 40-12= $28 that is left. the money that is left is the total of all 4 tickets. 28 divided by 4 is 7 so the answer is $7

791.26 x 42 please do step by step​

Answers

Answer:

33232.92

Step-by-step explanation:

What number does 0.023 round to when rounded to the nearest hundredth?

Answers

Answer:

.02

Step-by-step explanation:

Find the volume of a cylinder that has a height of 8 inches and a diameter of 14 inches.

Answers

Answer:

[tex]V=1232\ inches^3[/tex]

Step-by-step explanation:

Given that,

The height of a cylinder, h = 8 inches

The diameter of the cylinder, d = 14 inches

Radius, r = 7 inches

We need to find the volume of the cylinder. The formula for the volume of a cylinder is given by :

[tex]V=\pi r^2 h\\\\=\dfrac{22}{7}\times 7^2\times 8\\\\V=1232\ inches^3[/tex]

So, the volume of the cylinder is equal to [tex]1232\ inches^3[/tex].

find the total surface area of the following cone. leave your answer in terms of pi.

Answers

Answer:

90pi

Step-by-step explanation:

SA = pi r l +B

we know the radius is 5

We need to find the slant height using the Pythagorean theorem

a^2+b^2 = c^2

5^2+12^2 = l^2

25+144= l^2

169 = l^2

Taking the square root of each side

sqrt(169) = sqrt(l^2)

13 = l

B is the area of the base

B = pi r^2 = pi (5)^2 = 25 pi

SA = pi r l +B  = pi (5)*13 + 25pi

                       =65pi +25pi = 90pi

Answer:

90 pi

Step-by-step explanation:

Just in case the other answer was confusing. Just put it in, and it marked it right. 90 is the answer

SA= 90

Solve the following inequality: 10 - 2x ≥ 12.

Answers

Answer:

x<(with a line underneath)-1

Step-by-step explanation:

10-2x>(with a line underneath)12

-10 -10

-2x>(with a line underneath)2

/-2 /-2

x<(with a line underneath)-1

A rectangular prism has a length of 9 in., a width of 4 in., and a height of 1 1/2 in. The prism is filled with cubes that have edge lengths of 1/2 in. How many cubes are needed to fill the rectangular prism? Enter your answer in the box. To fill the rectangular prism, cubes are needed.

Answers

Answer: 432 cubes

Step-by-step explanation:

Volume of rectanglular prism

[tex]\\ \rm\Rrightarrow LBH[/tex]

[tex]\\ \rm\Rrightarrow 9(4)\times 1\dfrac{1}{2}[/tex]

[tex]\\ \rm\Rrightarrow 36\times \dfrac{3}{2}[/tex]

[tex]\\ \rm\Rrightarrow 18(3)[/tex]

[tex]\\ \rm\Rrightarrow 54in^3[/tex]

Volume of each cube

[tex]\\ \rm\Rrightarrow side^3[/tex]

[tex]\\ \rm\Rrightarrow (1/2)^3[/tex]

[tex]\\ \rm\Rrightarrow\dfrac{1}{8}in^3[/tex]

Total cubes

[tex]\\ \rm\Rrightarrow \dfrac{Volume\:of\:prism}{volume\:of\:one\:cube}[/tex]

[tex]\\ \rm\Rrightarrow 54\div\dfrac{1}{8}[/tex]

[tex]\\ \rm\Rrightarrow 54(8)[/tex]

[tex]\\ \rm\Rrightarrow 432[/tex]

-7/4 = 2/5x solve for x

Answers

X=-35/8 hope this helps

PLEASE !!! HELP QUICKLY !!!


Some credit cards offer a low introductory APR for a set period of time. After the introductory period is over, the APR is increased to a new rate. According to the sample credit card disclosure agreement, after a period of ,_______ the APR will increase to ______.

Blank 1 options (one month, six months, one year)
Blank 2 options (8.99%, 10.99%, 12.99%, 14.99%, 28.99%)

Answers

Answer:

1 Year & 14.99%

Step-by-step explanation:

The order is for 500 mL D5 1/2 NaCl to run in 6 hours. Set calibration is 15 gtt/mL calculate the flow rate in mL/hrs

Answers

Answer:

16 is correct

Step-by-step explanation:

I need help on both of these please and no links

Answers

Answer:

1) (-5, -4) and (0, 1)

2) 1:8

Step-by-step explanation:

If 8 containers of yogurt cost $6.80, how many containers of yogurt can you purchase
with $11.05?
You can purchase
containers ? yogurt with $11.05.

Answers

Answer:

The answer is 13 containers of yogurt.

Step-by-step explanation:

$0.85 = 1 container of yogurt so if you multiply 0.85 * 13 you will have your answer. I know this isn't too good of an explanation but trust me.

Find all missing side lengths

Answers

Answer:

Sin 60=y/46

y=39.8

-39.8^2+46^2=x^2

X=23

So y=39.8 and x=23

Can you answer this? 99^9 × 66 it kinda hard for me

Answers

Answer:

60292138333920306000

Step-by-step explanation:

I know...another one

Answers

I'm so confused what do you need help with?

Help me with the work please if you can

Answers

Answer:

1/3

Step-by-step explanation:

48+32+16=96

numerator : 32

denominator : 96

32/96=1/3

Match the values with the statistical measures for these data points.

20, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 26

Answers

Answer:

20, 20, 21, 22, 23, 23, 24, 24, 25, 25, 26, 26

Step-by-step explanation:

median (middle number) is (23 + 24) / 2 = 47/2 = 23.5 <== median

Q1 = (21 + 22) / 2 = 43/2 = 21.5 <== lower quartile

Q3 = (25 + 25) / 2 = 50/2 = 25 <== upper quartile

Your welcome! (Please correct me if im wrong!)

Please mark brainiest

What is the total amount of fabric needed to make the tent with the following dimensions?

Answers

The answer is 30 for all the dimensions

graph the quadratic and step by step please y=x^2+1​

Answers

Y=5 because you add 4+1=5

(a)
What is the greatest odd number that can be formed using the digits 3, 8, 2 and 5?​

Answers

Is this multiply choice?

giving brainliest!! *easy*

Answers

Answer:

615.44

Step-by-step explanation:

Julie is deciding which bank she should invest $5.000 with in order to maximize her
return. Select the answer that would earn Julie the most money after 10 years.
a. Bank A offers 6% APR compounded annually
b. Bank B offers 6% APR compounded semi-annually
c. Bank C offers 5.1% APR compounded daily
d. Bank D offers 6.3% APR compounded monthly

Answers

The answer is C to your question

Answer:d

Step-by-step explanation:

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