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vfiekz [6]
2 years ago
10

If x = 9 evaluate the following expression 2x

Mathematics
2 answers:
tamaranim1 [39]2 years ago
8 0

Answer: 2x = 18

Step-by-step explanation:

x = 9

2x = 2(9) = 18

Natalija [7]2 years ago
3 0
Answer 2x = 18






Hope this answer will help you
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the first term of an arithmetic sequence is 2 and the sum of the first 15 terms is 292.5. Find the common difference
adelina 88 [10]

Given:

First term of an arithmetic sequence is 2.

Sum of first 15 terms = 292.5

To find:

The common difference.

Solution:

We have,

First term: a=2

Sum of first 15 terms: S_{15}=292.5

The formula of sum of first n terms of an AP is

S_n=\dfrac{n}{2}[2a+(n-1)d]

Where, a is first term and d is common difference.

Putting S_{15}=292.5, n=15 and a=2 in the above formula, we get

292.5=\dfrac{15}{2}[2(2)+(15-1)d]

292.5=\dfrac{15}{2}[4+14d]

292.5=15[2+7d]

Divide both sides by 15.

\dfrac{292.5}{15}=2+7d

19.5=2+7d

19.5-2=7d

17.5=7d

Dividing both sides by 7, we get

\dfrac{17.5}{7}=d

2.5=d

Therefore, the common difference is 2.5.

8 0
3 years ago
My math homework says 32 over 41 equals 96 over blank what is the blank ??
Bingel [31]
The blank is 123 because 32/41=96/123.
your multiplying 32 by 3 to get 96.
That means you have to multiply the bottom by 3 too.
41 multiplied by 3 is 123.
And 123 is the blank.
4 0
3 years ago
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Fredo pays 79.65 for twenty-seven 17 count boxes of granola bars. How much does 1 box of granola bars cost?
alexira [117]
It is going to be 2.95 because 79.65 divided by 27 equals 2.95

have a good day mate!
7 0
2 years ago
NO WRONG ANSWERS Two customers took out car loans from a bank. Marcus took out a 5-year loan for $10,000 and paid 4.7% annual si
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Answer:

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Step-by-step explanation:

8 0
2 years ago
Write the equation for the perpendicular bisector of a segment that has endpoints (–1, 10) and (3, 6).
BaLLatris [955]

Answer: I believe it’s y=x+7

Step-by-step explanation:

7 0
3 years ago
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