3 years ago

7x^2 +2× when x = 3?

2 answers:

8 0

Answer:your answer would be 106

Step-by-step explanation: the new equation would be 7(3)2+2(3) the 7x3x2 would equal 98 and and the 2x3 would equal 8 because 2x2x2 98+8=106

borishaifa [10]3 years ago

4 0

Answer:

7(3^2) + 2(3).

That equals to 7(9) + 2(3).

That equals to 63 + 6.

That finally equals to 69.

Step-by-step explanation:

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A tailor cut 3/4 of an inch off a skirt and 1/6 of an inch off a pair of pants. How much more did the tailor cut off the skirt t

Harrizon [31]

2/6 because if you subtract 3/4 and 1/6 you will get 2/6

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3 years ago

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Step-by-step explanation:

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3 years ago

Read 2 more answers

the sum of the first six terms of a geometric series is 21/16 . if the common ratio is -1/2 , what is the first term?

Oksanka [162]

Answer:

-84

Step-by-step explanation:

The formula for the nth term of a geometric progression is

Un = ar^n- 1

The sum of the first six terms of a geometric series (U6) = 21/16

Common ratio = -1/2 ,

a = First term ??

21/16 = a × (-1/2 )^6- 1

21/16 = a ×(-2^-1)^5

21/16 = a × -2^-6

Cross Multiply

16 × a × -2^-6 = 21

a = 21/16 × -2^-6

a = 21/16 ×- 1/2⁶

a = 21/16 × -1/64

a = 21 ÷(-1/4)

a = 21 × -4

a = -84

The first term = 84

8 0

2 years ago

Which one is it ???????

hram777 [196]

15 is the correct answer

4 0

2 years ago

A cone has a height of 4 in and a radius of 6 in. What is the volume of the cone?

MatroZZZ [7]

Answer:

48π in³

Step-by-step explanation:

$V=\frac{1}{3} \pi r^2h$

Plug in the radius 6 in and the height 4 in

$V=\frac{1}{3} \pi (6)^2(4)\\V=\frac{1}{3} \pi (36)(4)\\V=\frac{1}{3} \pi (144)\\V=48\pi$

Therefore, the volume of the cone is 48π in³.

I hope this helps!

3 0

2 years ago