4 years ago

Solve the following system of equations using substitution.

Mathematics

1 answer:

dolphi86 [110]4 years ago

6 0

It's A. If U=16, 6+10=16
and if you plug in the numbers for the second equation it's 36=2(10)+16

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Solve the system of equations down below Y-15=3x -2+5y=-3

jenyasd209 [6]

Answer:

Step-by-step explanation:

-5(y-15=3x) = -5y+75=-15x

add 15x to both sides and subtract 75 to both side

-5y+15x=-75

5y-2x=-3

13x=-78

and then both side divide by 13

x=-6

y-15=3(-6)

y-15=-18

Y= (-18) - 15 = -3

y=-3

and the answer will be (-6,-3)

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3 years ago

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mr_godi [17]

$x-y=5\\
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4 years ago

Simplify the following expression: 5^2 - 4 (fraction bar) 5+2

Lyrx [107]

Answer:

d.) 3

Explanation:

$\sf \rightarrow \dfrac{5^2-4}{5+2}$

squaring 5 = 25

$\sf \rightarrow \dfrac{25-4}{5+2}$

add/subtract integers

$\sf \rightarrow \dfrac{21}{7}$

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$\sf \rightarrow 3$

8 0

2 years ago

Ok ok this is the last one finally

Evgen [1.6K]

Answer:

Step-by-step explanation:

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3 years ago

Solve 1 5 X I’ll mark brainleist

Nookie1986 [14]

Answer:

$\frac{9}{5}$ or $1\frac{4}{5}$

Step-by-step explanation:

First add 1/5 from both sides to get 2/3x > 6/5. This can then be simplified to x > 18/10. 18/10 is the same as 9/5. And 9/5 is also 1 4/5.

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3 years ago

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