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Shkiper50 [21]
3 years ago
11

Pls help me my grades are not good

Mathematics
1 answer:
Scilla [17]3 years ago
8 0

Answer:

63

Step-by-step explanation:

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The circumference of a circle is 138.16 centimeters. What is the area of the circle?
vodomira [7]
Circumference formula tells you C=2 \pi r

<span>C=2 \pi r
</span><span>138.16=2 \pi r
</span>21.99= r
<span>r=21.99cm</span>
The formula to find the area of a circle is A= \pi r^2

<span>A= \pi r^2
</span><span>A= \pi (21.99)^2
</span><span>A= \pi (483.56)
</span>A= 1519cm^2
6 0
3 years ago
Give the area of a rectangle that has a length of 8 and a width of 9.
frez [133]

Answer:

72

Step-by-step explanation:

  1. L × W = A
  2. 8 × 9 = A
  3. 8 × 9 = 72

I hope this helps!

6 0
3 years ago
Identify the solution to the following inequality: -1/2 (x+3) &gt; x - 3
mrs_skeptik [129]

Answer:

A

Step-by-step explanation:

- \frac{1}{2} (x + 3) > x - 3 ( multiply both sides by 2 to clear the fraction )

- (x + 3) > 2x - 6 ← distribute parenthesis on left side by - 1

- x - 3 > 2x - 6 ( subtract 2x from both sides )

- 3x - 3 > - 6 ( add 3 to both sides )

- 3x > - 3

divide both sides by - 3, reversing the symbol as a result of dividing by a negative quantity

x < 1

8 0
2 years ago
Read 2 more answers
NEED HELP WILL GIVE 5 STAR, THANKS, AND BRAINLIEST FOR BEST ANSWER PLEASE HELP ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
yulyashka [42]

Answer:

h = -t+20

After 8 hours the candle will be 12 inches

Step-by-step explanation:

We have 2 points (time, inches)

 (3,17)  and (5,15)

We can find the slope

m = (y2-y1)/(x2-x1)

   = (15-17)/(5-3)

   = -2/2

   = -1

We can use point slope form

y-y1 = m(x-x1)

Replace y with h and x with t

h-17 = -1 (t-3)

Distribute

h-17 = -t+3

Add 17 to each side

h-17+17 = -t+3+17

h = -t+20

After 8 hours

h = -t+20

h = -8+20

h= 12

4 0
3 years ago
CAN SOMEONE HELP????????????????????
Triss [41]

Answer:

no, sorry

Step-by-step explanation:

6 0
3 years ago
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