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natulia [17]
3 years ago
7

Help me plz with my hw

Mathematics
1 answer:
inna [77]3 years ago
6 0
Circumference is found with the formula

c = pi × d

d is diameter and we will use 3.14 for pi.

The diameter is the measure across the center of the circle. In the first problem, you are given the radius, so we have to multiply by 2 to get the diameter. Then we can use the formula.

12.4 in × 2 = 24.8 in (that's the diameter)

c = pi × D
c = 3.14 × 24.8
c = 77.872 inches

circumference is 77.872 inches.

Try the other problems on your own. They are just like this one. Just make sure they are giving you the diameter and not the radius. Post if you have problems.
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What is the equivalent fraction for the decimal given? (simplify your answer) *<br><br>0.15
MA_775_DIABLO [31]
Answer: 0.15 is equivalent to 3/20
8 0
3 years ago
Use the function f(x) = -3x^2+13x+3 to find x when f(x) = -7
Bond [772]

Answer: - 235

<u>Step-by-step explanation:</u>

f(x) = -3x² + 13x + 3

f(-7) = -3(-7)² + 13(-7) + 3

      = -3(49) - 91 + 3

      = -147 - 88

      = -235  

7 0
4 years ago
Read 2 more answers
What is the y-intercept of the line?
8090 [49]

Answer:

34

Step-by-step explanation:

We start by working out the slope. The slope is change in y over change in x, so (66-58)/(-56)-(-42) is the slope here. 66-58 is 8, and -56-(-42) is -14. -8/14=-4/7. The equation of a line in slope-intercept form is y=mx+b where b is the y intercept and m is the slope. Since the slope is -4/7, then y=-4/7x+b. We then insert any x and y pair into this equation and solve for b, the y intercept to get it. (We can do ANY pair) So, 50=(-4/7)(-28)+b.

: 50=16+b

: 50-16=b

: 34=b

So, in conclusion, the y intercept is 34. Hope this helps!

6 0
3 years ago
Pleade help will give brainiest answer!!!
luda_lava [24]
❤hey mate❤

it took 6 trials to get the answet



thanx...

7 0
3 years ago
Are 22/32 equivalent to 11/16
Allisa [31]

Answer:

Yes!

Step-by-step explanation:

22/32 divided by 2 equals 11/16, meaning they are equivalent.

7 0
3 years ago
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