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My name is Ann [436]
3 years ago
10

Question 8 of 14

Mathematics
2 answers:
diamong [38]3 years ago
7 0

Answer:

144.

Step-by-step explanation:

Sum of n terms = (n/2)[a1 + l]    where a1 = first and l = last term.

There are ( 1 + 23) / 2 = 12 terms in this series.

So  the sum = (12/2) [ 1 + 23]

= 6 * 24

= 144.

Oxana [17]3 years ago
3 0

Answer:

276 is correct

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Answer:

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Step-by-step explanation:

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3 years ago
Solve the System of equations using substitution or elimination. Show work. 3x-4y=-31 X+y=6
Nataly_w [17]
Hope this helps I got (-1, 7)
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4 years ago
System OT<br> W + b =13<br> 6.5w + 2b = 57.5
mixer [17]

Answer:   w = 7,  x = 6

Step-by-step explanation:  Solve by substitution

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rewrite as   b = 13 - w  and substitute that value for b in the second equation

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6.5w - 2w = 57.5 - 26

4.5w = 31.5  Divide both sides by 4.65

w = 7 . Substitute 7 for w in the first equation and solve for b

7 + b = 13 . Subtract 7 from both sides

b = 6

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3 years ago
Dwayne brought 5 yards of wrapping paper how many inches of wrapping paper did he buy
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It's 180 inches of wrapping paper.
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The ratio ofdogs to cats at an animal shelter is 3 to 2
vazorg [7]

Dogs : 18

i hope this answer was correct (:

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