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Mars2501 [29]
3 years ago
14

Solve y over negative 2 5 = 13.

Mathematics
2 answers:
devlian [24]3 years ago
8 0
Y/-2 + 5 = 13
y/-2 = 13 - 5 = 8
y = -2(8) = -16
y = -16
Anika [276]3 years ago
3 0

Answer:

y=-16

Step-by-step explanation:

The expression is written:

-y/2+5=13

We multiply the whole expression by 2 to get rid of the fraction:

-y+5\cdot(2)=13\cdot(2)

-y+10=26

We move -y to the right hand side to make it positive y and move 26 to the left side to subtract it from 10:

10-26=y

y=-16

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Gerald's answer is almost correct.  

He just needs to switch the 14 and the x.

it should be

24/x = 18/14

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18x = 336

x = 18.7

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Find the surface area of the above solid.<br> A. 43 cm2<br> B. 52 cm2<br> C. 50 cm2<br> O D. 54 cm2
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3 years ago
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Find the sum of the geometric sequence. three divided by two, three divided by eight, three divided by thirty two, three divided
Lynna [10]

Answer: we have that

[3/2,3/8,3/32,3/128,3/512]

the sum of the geometric sequence is [3/2+3/8+3/32+3/128+3/512]

=(1/512)*[256*3+64*3+16*3+4*3]

=(3/512)*[256+64+16+4]

=(3/512)*[340]

=(1020/512)

=255/128---------> 1.9922

the answer is

1.9922

another way to calculate it 

is through the following formula

∑=ao*[(1-r^n)/(1-r)]

where 

ao---------> is the first term

r----------> is the common ratio between terms

n----------> is the number of terms

ao=1.5

r=1/4-----> 0.25

n=5

so

∑=1.5*[(1-0.25^5)/(1-0.25)]-------------> 1.99

Step-by-step explanation: we have that

[3/2,3/8,3/32,3/128,3/512]

the sum of the geometric sequence is [3/2+3/8+3/32+3/128+3/512]

=(1/512)*[256*3+64*3+16*3+4*3]

=(3/512)*[256+64+16+4]

=(3/512)*[340]

=(1020/512)

=255/128---------> 1.9922

the answer is

1.9922

another way to calculate it 

is through the following formula

∑=ao*[(1-r^n)/(1-r)]

where 

ao---------> is the first term

r----------> is the common ratio between terms

n----------> is the number of terms

ao=1.5

r=1/4-----> 0.25

n=5

so

∑=1.5*[(1-0.25^5)/(1-0.25)]-------------> 1.99

8 0
3 years ago
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