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4 years ago

8 (40+7) = ( 8. ) + (8 7

Mathematics

1 answer:

prohojiy [21]4 years ago

8 0

The first part is 8 x 40=320
8 x 7=56
320+56 and i am not sure what you have going on on the other half

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3 years ago

Can someone please help me with this. whoever answers first will be the brainleyist

pav-90 [236]

Answer:

Step-by-step explanation:

6(5+x) = 30 + 6x

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3 years ago

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3 years ago

a scientist studying where American Indians once lived discovered 137 pots in the first location and 243 in the second how many

natulia [17]

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4 0

3 years ago

Read 2 more answers

Find the sum of the first 11 terms of the sequence -7,-4,-1, 2 ...

lawyer [7]

Answer:

A The sum of the first 11 terms is 88

Step-by-step explanation:

Since -4 - (-7) = -1 - (-4) = 2 - (-1) = 3

Your sequence is an arithmetic sequence with a common difference of 3.

The formula for the sum of an arithmetic sequence is

$S = \frac{n(a_{1} + a_{n}) }{2}$ where $a_{1} = the first term, a_{n} = the last term, n = the number of terms to be added, and S = the sum$

In your case $a_{1} = -7$ , n = 11 and $a_{n} = a_{11}$

We know everything except the eleventh term.

So, we need to find the eleventh term or $a_{11}$ = $a_{1}$ + (n - 1)d

= -7 + (11 - 1)3

= -7 + 30 = 23

Now, S = $\frac{11(-7 + 23)}{2} = \frac{11(16)}{2} = 88$

The sum of the first 11 terms is 88

7 0

3 years ago