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alex41 [277]
3 years ago
14

The circumference of a tennis ball is 21cm. How many inches is the circumference?​

Mathematics
2 answers:
Llana [10]3 years ago
6 0

Answer:

Step-by-step explanation:

answer of thecircumfrance3465

Arturiano [62]3 years ago
3 0

Answer:

8.26772

Step-by-step explanation:

1 centimeter is equaled to 0.393701 in inches so multiply it by 21

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(–2x + 4) + ( x – 11)
expeople1 [14]

Answer:

-x-7

Step-by-step explanation:

(-2x+4)+(x-11)

-2x+4+x-11

-x-7

7 0
3 years ago
Read 2 more answers
Please answer number 15 I’ll give brainliest thanks!
kumpel [21]

Answer:

C

Step-by-step explanation:

i belive it is C because if you look at it your just multiplying by 4 hope this helps!!! :D

6 0
3 years ago
The sum of the first term of an ap is 240 and the sum of the next 4 term is 220 find the first term of the ap
Sindrei [870]

Answer:

The common difference is -5/4

T(n) = T(0)  - 5n/4,

where T(0) can be any number. d = -5/4

Assuming T(0) = 0, then first term

T(1) = 0 -5/4 = -5/4

Step-by-step explanation:

T(n) = T(0) + n*d

Let

S1 = T(x) + T(x+1) + T(x+2) + T(x+3) = 4*T(0) + (x + x+1 + x+2 + x+3)d = 240

S2 = T(x+4) + T(x+5) + T(x+6) + T(x+7) = 4*T(0) + (x+5 + x+6 + x+7 + x+8)d = 220

S2 - S1

= 4*T(0) + (x+5 + x+6 + x+7 + x+8)d - (4*T(0) + (x+1 + x+2 + x+3 + x+4)d)

= (5+6+7+8 - 1 -2-3-4)d

= 4(4)d

= 16d

Since S2=220,  S1 = 240

220-240 = 16d

d = -20/16 = -5/4

Since T(0) has not been defined, it could be any number.

7 0
3 years ago
What is the x-coordinate of the vertex of the parabola whose equation is y = 3x^2 + 12x + 5?
marshall27 [118]
X=-2....................
5 0
4 years ago
16w+2 simplified<br><br> Factor the expression by the greatest common factor
MatroZZZ [7]

Answer:

2(8w + 1)

Step-by-step explanation:

Look on either side of the plus sign. What ever you see that is common is a common factor. In this case it is also the greatest common factor.

2 appears on both sides of the plus sign.

2(16w/2 + 2/2)

4 0
2 years ago
Read 2 more answers
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