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2 years ago

Consider the figure to the right.

Mathematics

1 answer:

lidiya [134]2 years ago

4 0

Answer:B

Step-by-step explanation:

Just did it on math nation

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Solve the following system of equations for a and for b:

viktelen [127]

Answer:

$a=3\\b=1$

Step-by-step explanation:

$9a+3b=30\\8a+4b=28$

Let's solve the second equation for a to later on replace it in the first equation.

$8a+4b=28\\8a=28-4b\\a=\frac{28-4b}{8}$

Now plug this into the first equation.

$9a+3b=30\\9(\frac{28-4b}{8})+3b=30$

Distribute the 9

$(\frac{252-36b}{8}) +3b=30$

Break down the fraction.

$\frac{252}{8}-\frac{36b}{8}+3b=30$

Simplify.

$\frac{63}{2}-\frac{9}{2}b+3b=30$

Subtract $\frac{63}{2}$

$-\frac{9}{2}b+3b=30-\frac{63}{2}$

Combine like terms.

$\frac{-9+2*3}{2}b=\frac{30*2-63}{2}$

$\frac{-9+6}{2}b=\frac{60-63}{2}$

$\frac{-3}{2}b=\frac{-3}{2}$

Muliply by the reciprocal or inverted fraction next to b.

$(-\frac{2}{3})(-\frac{3}{2}) b=-\frac{3}{2}(-\frac{2}{3})$

$b=1$

Now plug this value into any of the equations to find the value of a.

$8a+4b=28\\8a+4(1)=28\\8a+4=28\\8a=28-4\\8a=24\\a=\frac{24}{8}\\ a=3$

5 0

3 years ago

What is 6 times 340 = ?

Debora [2.8K]

Answer:

6 x 340 = 2,040

Step-by-step explanation:

3 0

2 years ago

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NEED HELP ASP!!

balu736 [363]

D) 34/5 because 6(5) = 30 30+4=34 , so its 34/5

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2 years ago

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Please help!! First correct answer = branliest!! Factor the trinomial: x^2−4x+3

PtichkaEL [24]

Look at the attached picture⤴⤴⤴

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2 years ago

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From 248 to 200 workers

Yuri [45]

Are you asking what is 248-200? If so that would be 48. 200-248=248

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2 years ago

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