2 years ago

Multiply (3x)(x^2+4x-15)

Mathematics

1 answer:

antiseptic1488 [7]2 years ago

3 0

Use the picture below to see how I did it and got the answer

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3 years ago

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malfutka [58]

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Step-by-step explanation:

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2 years ago

What is the value of x in the equation x + 10 = 13? O-3 03 0 13 O 23

gayaneshka [121]

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2 years ago

Read 2 more answers

I need answers!!!!!!!!

aleksandrvk [35]

Answer:

a) 4.4583 b) Fiona

Step-by-step explanation:

First find the average of the numbers by adding them all together then dividing them by the amount of numbers given:

$(85 + 88 + 90 + 91 + 93 + 96 + 97 + 97 + 98 + 98 + 99 + 105)\div12= 1137\div12= 94.75$

Then find the difference between each number and the answer you got

$(85 - 94.75) + (88 - 94.75) + (90 - 94.75) + (91 - 94.75) + (93 - 94.75) + (96 - 94.75) + (97 - 94.75) + (97 - 94.75) + (98 - 94.75) + (98 - 94.75) + (99 - 94.75) + (105 - 94.75)\div12$

Which is

$(9.75) + (6.75) + (4.75) + (3.75) + (1.75) + (1.25) + (2.25) + (2.25) + (3.25) + (3.25) + (4.25) + (10.25)\div12$

Which comes out to

$\frac{53.5}{12}=4.4583$

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2 years ago