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labwork [276]
3 years ago
14

Molly's alarm clock fell to the floor and the glass face was broken. Molly measured the glass face so that she could order a new

one.
The radius of the circle-shaped glass face is 8 centimeters. What is the approximate area of the glass face? (Use 3.14 for .)
Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0

Answer:

200.96 cm^2

Step-by-step explanation:

πr^2 is the formula for the area of a circle

π*8^2

64π

substitute pi with 3.14

64 * 3.14 = 200.96

200.96

mark brainliest please!

You might be interested in
What number "c" completes the square: x^2 - 14x + c
Vladimir79 [104]

Answer:

49

Step-by-step explanation:

To complete the square we use the formula:

c=(\frac{b}{2} )^{2}

So we can plug in 14 for b to find c.

c=(\frac{14}{2} )^{2}\\\\c=(7 )^{2}\\c=49

Now this equation can be factored into:

(x-7)^{2}

6 0
4 years ago
Tanner cycled 8 miles in 20 minutes .What is the constant of proportionality based on the situation
solmaris [256]

The constant of proportionality based on the situation is 0.4

Step-by-step explanation:

Tanner cycled 8 miles in 20 minutes

We need to find the constant of proportionality based on the situation

1. The distance is proportion to the time, because the distance and

   the time increased together

2. If the distance d and the time is t, then d ∝ t

3. The equation of the direct proportion is d = k t, where k is the

    constant of proportionality

∵ d = k t

∵ d = 8 miles

∵ t = 20 minutes

- Substitute these values in the equation above

∴ 8 = k (20)

- Divide both sides by 20

∴ k = 0.4

The constant of proportionality based on the situation is 0.4

Learn more:

You can learn more about proportionality in brainly.com/question/10708697

#LearnwithBrainly

7 0
3 years ago
Show work THEN the answer
inysia [295]
The answer is 1.7325

1x5=5
1x2=2
1x8=8
Add a zero
2x5=10
2x2=4
2x8=40
Add a Zero
All the answers to the next number will all be zero.

Add that all together.
8 0
4 years ago
What is 6000 by the power of 10
ipn [44]
6,000 = 6 \times 1,000 =\boxed { 6 \times 10^3}
5 0
3 years ago
Solve the equation.<br> X^2=2x^2 + 4
Ierofanga [76]

Answer:

No real solution or if you learned imaginary numbers, 2i

Step-by-step explanation:

x^2=2x^2+4

x^2=x^2+x^2+4

Subtract x^2 from both sides

0=x^2 + 4

Subtract 4 from both sides

x^2 = -4

Square root both sides

x=sqrt(-4)

x=2i or no real solutions

8 0
3 years ago
Read 2 more answers
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