3 years ago

1) 12 2) 10 3) 8 4) 6

Mathematics

1 answer:

Svetlanka [38]3 years ago

4 0

The answer to this question has to be 8

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Help please asap!!!??

liberstina [14]

Answer:

-4=X 6=Y

Step-by-step explanation:

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3 years ago

Write -4 1/8 as a decimal

Hatshy [7]

-4 1/8 as decimal.
The decimal is -3.875.

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3 years ago

Which relation is a function?

Serjik [45]

Answer:

the blue one

Step-by-step explanation:

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3 years ago

12) Add the fractions, and simplify if possible.<br><br> (y+7)/(y^2-y-12) - 2/(y^2-9)

lianna [129]

Answer:

$\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

Step-by-step explanation:

Given the expression

$\dfrac{y+7}{y^2-y-12}-\dfrac{2}{y^2-9}$

First, factor each denominator:

1. $y^2-y-12=y^2-4y+3y-12=y(y-4)+3(y-4)=(y-4)(y+3)$

2. $y^2-9=(y-3)(y+3)$

Now the expression is

$\dfrac{y+7}{(y-4)(y+3)}-\dfrac{2}{(y-3)(y+3)}$

Now, multiply the first numerator by (y-3) and the second by (y-4) and write the result as a fraction with denominator $(y-4)(y+3)(y-3):$

$\dfrac{(y+7)(y-3)-2(y-4)}{(y-4)(y+3)(y-3)}=\dfrac{y^2-3y+7y-21-2y+8}{(y-4)(y+3)(y-3)}=\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

This fraction cannot be simplified more.

3 0

3 years ago

Thank you for help ✨

mr_godi [17]

Answer:

7 m

Step-by-step explanation:

Corresponding sides of similar triangles are in same ratio.

$\dfrac{QR}{SR}=\dfrac{QP}{ST}\\\\\dfrac{y}{8}=\dfrac{3}{6}\\\\y=\dfrac{3}{6}*8\\\\y=4\\\\\\$

$\dfrac{x}{1.5}=\dfrac{6}{3}\\\\x =\dfrac{6}{3}*1.5\\\\x=3$

x + y = 3 + 4 = 7

4 0

3 years ago

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