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2 years ago

How to do factor each expression 63 + 81

Mathematics

1 answer:

Katyanochek1 [597]2 years ago

6 0

Answer:

$9(7 + 9)$

Step-by-step explanation:

To factor an expression you have to first find the highest common factor (HCF) of the numbers in the expression. You divide them by their HCF, bracket it and place the HCF outside the bracket.

$63 + 81 = \\ 9(\frac{63}{9} + \frac{81}{9}) = \\ 9(7 + 9)$

To check if it is factored properly you can do the opposite of what you just did by clearing the bracket.

9 (7 + 9)

(9 x 7) + (9 x 9)

= 63 + 81

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Answer: 50 hours

Step-by-step explanation:

Sarah:

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3 years ago

Dan takes an airplane ti visit his parents house. He pays the airline a total of $550. The cost of the ticket is 415. The airlin

stepan [7]

Total cost of ticket is $550
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3 years ago

Find the volume for 2 different spheres by randomly choosing different radii.

grigory [225]

Answer:

The volume of a sphere of radius r is:

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C = pi*r^2*h

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First, let's use the radius: r = 2.

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C = 3.14*(2^2)*4 = 50.24

Now, let's choose the radius r = 3.

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6 0

3 years ago

The function f(x) = 3x^2 models the packaging costs, in cents, for a box shaped like a rectangular prism. The side lengths are 4

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Answer:

$0 < x < 15, 0 < f(x) < 675$

Step-by-step explanation:

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$x_{max} = \frac{90\,ft}{6}$

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3 0

3 years ago

HELP ME PLS bro i suck at math;-;

weeeeeb [17]

$\huge\underline\color{pink}{Answer ☘}$

$angle \: sum \: property \: of \: a \: triangle \\ states \: that \: the \: sum \: of \\ all \: the \: three \: angles \: of \: a \: triangle \: is \\ equal \: to \: 180°$

therefore~

$63 + (x + 17) + (4x - 5) = 180° \\ 63 + x + 17 + 4x - 5 = 180° \\ 5x + 75 = 180 \\ 5x = 180° - 75 \\ 5x = 105° \\ x = \frac{105}{5} = 21°$

therefore the measure of all the angles are..

∠1 = 63°

∠2 = ( x + 17 ) = ( 21 + 17 ) = 38°

∠3 = ( 4x - 5 ) = ( 84 - 5 ) = 79°

<h3> $thus \: the \: measure \: of \: the \: largest \\ angle\: is \: 79°$ </h3>

hope helpful~

5 0

3 years ago