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3 years ago

Help.please ASAP will mark brainliest !!!

Mathematics

1 answer:

kupik [55]3 years ago

8 0

The answer is D because if you continue the pattern the bottom number would have to be 8 and the top would have to be 7!!

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If x=-7 and y=3x+2, then y equals what number?

kati45 [8]

Answer:

y = -19

Step-by-step explanation:

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3 years ago

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Rewrite 1 3/5 as a decimal number?

Alika [10]

The decimal for 1 3/5 would be 1.6

5 0

3 years ago

Solve the proportional equation below: 4/7=28/(x+18)

Anni [7]

4/7=28/(x+18)

4/7 =28/x+18
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-17 2/7=28/x
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3 years ago

The length of one side of the poster is _in

navik [9.2K]

Note that the area of a square is: A = s² (s being side). Also note that all the sides of the square are congruent and have the same measurement.

Plug in 37 for A

37 = s²

Isolate the s. Note the equal sign. What you do to one side, you do to the other. Root both sides

√37 = √s²

s = √37

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4 0

3 years ago

Find a1, for the given geometric series. Round to the nearest hundredth if necessary. Sn= 86,830, r= 2.2, n=4

larisa86 [58]

Answer:

4,646.30

Step-by-step explanation:

The sum of n terms of geometric sequence can be calculated using formula

$S_n=\dfrac{a_1(1-r^n)}{1-r}$

In your case,

$S_n=86,830\\ \\r=2.2\\ \\n=4\\ \\a_1=?$

Substitute into the formula:

$S_4=\dfrac{a_1(1-2.2^4)}{1-2.2}\\ \\86,830=\dfrac{a_1(1-23.4256)}{-1.2}\\ \\-104,196=a_1(-22.4256)\\ \\22.4256a_1=104,196\\ \\a_1=\dfrac{104,196}{22.4256}\approx 4,646.30$

5 0

4 years ago