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2 years ago

What variable do you eliminate? 4x + 8y = 20 - 4x + 2y = -30

Mathematics

1 answer:

sveticcg [70]2 years ago

4 0

Y :!2!298-76-6-7-8-&-8-7-6

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<img src="https://tex.z-dn.net/?f=4%20%5Cfrac%7B1%7D%7B9%7D%20%20%2B%201%20%5Cfrac%7B1%7D%7B2%7D%20" id="TexFormula1" title="4 \

tino4ka555 [31]

Step-by-step explanation:

$\tt{ 1. \: \: 4 \frac{1}{9} + 1 \frac{1}{2}}$

⇢ $\tt{ \frac{37}{9} + \frac{3}{2} }$

⇢ $\tt{ \frac{37 \times 2 + 3 \times 9}{18} }$

⇢ $\tt{ \frac{74 + 27}{18} }$

⇢ $\tt{ \frac{101}{18}}$

⇢ $\boxed{ \tt{5 \frac{11}{18}} }$

---------------------------------------------------------

$\tt{ \: 2. \: \: 4 \frac{1}{2} \div \frac{3}{5}}$

⇢ $\tt{ \frac{9}{2} \times \frac{5}{3}}$

⇢ $\tt{ \frac{9 \times 5}{2 \times 3}}$

⇢ $\tt{ \frac{45}{6}}$

⇢ $\boxed{ \tt{7 \frac{3}{6}} }$

Hope I helped ! ♡

Have a wonderful day / night ! ツ

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6 0

2 years ago

I NEED HELP PRONTO PLZZZ HELP ME

forsale [732]

Answer:

12 ÷ 4

Step-by-step explanation:

Let's try to solve the given expression to see if it matches with any of the options guven..

$\frac{1}{4}*12$

$= \frac{1*12}{4}$

$= \frac{12}{4}$ (this is equivalent to 12 ÷ 4, which is given in the question)

Thus,

12 ÷ 4 equivalent to $\frac{1}{4}*12$

4 0

3 years ago

Kayla won 37 super bouncy balls

Mariana [72]

Answer:

15 friends

Step-by-step explanation:

37 - 7=30 so then you divide 30 by 2 which equals 15 so there is your answer.

7 0

3 years ago

Given the function f(x)=4x-9, evaluate and simplify the following f(-6) and f(4)

saveliy_v [14]

Answer:

Step-by-step explanation:

$f(x)=4x-9$

f(-6), f(4)

Put x = -6 and x = 4 to the equation of the function:

$f(-6)=4(-6)-9=-24-9=-33\\\\f(4)=4(4)-9=16-9=7$

4 0

3 years ago

Mrs.taylor bought a water tube to pull behind her boat. The tube cost $87.00 and 9% sales tax was added at the register .mrs.tay

Westkost [7]

To find the sales tax you’d need to find 9% of 87. You find this by using this template, x%/100%=y/z, x being the sales tax, y being 9% in cash, and z being the 87 dollars. You multiply the x value by the z value, (9 X 87=783) and then divide that product by 100%. This gives you the sales tax of 7.83, and when you add that to 87 you get $94.83. Subtract that from the 5 20 dollar bills ($100) and you are left with $5.27 change.

4 0

3 years ago