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3 years ago

Please help the question is below

Mathematics

1 answer:

slava [35]3 years ago

6 0

Answer:

x = -8

Step-by-step explanation:

We have,

$x-3y=136\ ...(1)$

and

$18x+3y=-288\ ....(2)$

Adding equation (1) and (2) we get :

$19x=-152\\\\x=-8$

So, the value of x is -8.

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WHATS IS -5x 2/7= I NEED HELP PLEASE

Kipish [7]

-5x 2/7 =

−10x/7

srry if it is wrong man but that is what i got

4 0

3 years ago

Pamela drove her car 99 kilometers and used 9 liters of fuel. She wants to know how many kilometers (k) she can drive with 12 li

masya89 [10]

Answer:

132 kilometers

Step-by-step explanation:

Given: Pamela drove her car 99 kilometers and used 9 liters of fuel.

To find: Number of kilometers Pamela drove in 12 liters of fuel.

Solution:

It is given that Pamela drove her car 99 kilometers and used 9 liters of fuel. Also the relationship between kilometers and fuel is proportional.

So, let us assume that she can travel x kilometers in 12 liters of fuel.

By proportionality we have,

$99:9 :: x:12$

$\frac{99}{9} =\frac{x}{12}$

$11=\frac{x}{12}$

$x=12\times11$

$x=132$

Hence, she can travel 132 kilometers in 12 liters of petrol.

7 0

3 years ago

Read 2 more answers

Pleasee helpp

max2010maxim [7]

Answer:

the answer is D because "difference" is a key word for subtraction

Step-by-step explanation:

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2 years ago

Which expression is equivalent to 2(x -1)+x

olchik [2.2K]

$\huge\text{Hey there!}$

$\huge\textbf{Question reads....}$

$\large\text{Which expression is equivalent to 2(x - 1) + x?}$

$\huge\textbf{Step by step to find your result}$

$\large\textbf{First you have to DISTRIBUTE 2 WITHIN the}\\\large\textbf{PARENTHESES}$

$\large\text{2(x - 1) + x}\\\rightarrow\large\text{2(x) + 2(-1) + x}\\\rightarrow\large\text{2x - 2 + x}\\\rightarrow\large\text{2x - 2 + 1x}\\\rightarrow\large\textbf{COMBINE the LIKE TERMS}\leftarrow\\\rightarrow\large\text{(2x + 1x) - (2)}\\\rightarrow\large\text{3x - 2}$