3 years ago

I need help figuring out how to do this.

1 answer:

8 0

SURFACE AREA:i was literally just working on surface area so (15×6=90)×2=180 and then (2.26×15=33.9)×2=67.8 and then (2.26×6=13.56)×2=27.12 and add all of them together to get 274.92

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Each of the 60 students in math curriculum is taking at least one of the three math course offered. Forty-six are taking consume

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Answer:

Step-by-step explanation:

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3 0

3 years ago

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Calculate s5 for the sequence defined by

pantera1 [17]

ANSWER

$S_5= 42.5$

EXPLANATION

The general term of the arithmetic sequence is

$a_n=1+\frac{5}{2}n$

For the first term,we substitute $n=1$ to get,

$a_1=1+\frac{5}{2}\times 1$

$a_1=1+2.5=3.5$

Similarly

$a_5=1+\frac{5}{2}\times 5$

$a_5=13.5$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(a_1+l)$

where l is the last term.
In this case

$l=a_5=13.5$

We substitute these values to get,

$S_5= \frac{5}{2} (3.5 + 13.5)$

$S_5= \frac{5}{2} (17)$
$S_5=42.5$

We could have also used the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

$S_5=\frac{5}{2}(2(3.5)+(5-1)2.5)$

$S_5=42.5$

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4 years ago

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What fraction is equivalent to 7 over 15

nikitadnepr [17]

There are lots of them I know but I will only give you a few of them.

14/30 56/120
21/45 63/135
28/60 70/150
35/75 77/165
42/90 84/180
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3 years ago

Write 6 less than twice w as an algebraic expression

HACTEHA [7]

6 less than twice w

$2w-6$