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AURORKA [14]
3 years ago
7

8x+4y=16 ; 7y=15-x solve the system of equations given below

Mathematics
2 answers:
Nimfa-mama [501]3 years ago
6 0
The answer is x=1 and y=2 hope it helps you dear
soldier1979 [14.2K]3 years ago
6 0

Answer:  (1,2)

Step-by-step explanation:

The given system of linear equations :-

8x+4y=16 \\7y=15-x which can be written as ,

2x+y=4..........(1) \text{[Divide both sides by 2]}\\7y+x=15................(2)\text{[Add x on both sides]}

Now, Multiply 2 on both sides of equation (2), we get

14y+2x=30.........(3)

Subtract equation (1) from equation (3) , we get

13y=26\\\\\Rightarrow\ y=2

Put y= 2 in (1), we get

2x+2=4\\\\\Rightarrow\ 2x=2\\\\\Rightarrow\ x=1

Hence, the solution to the given system is (1,2).

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To calculate 9*52, we note that 9=10-1, so mentally calculate
9(52)
=(10-1)(52)
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Alternatively,
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If  you're good with multiplication and division,
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3 years ago
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dsp73

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What is the length of the longest side ?
exis [7]

Answer:

11 feet (Option C)

Step-by-step explanation:

Let the longer side be l and the shorter side be b.

We know that,

→ Perimeter of rectangle = 2 ( longer side + shorter side )

Here,

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→ 32 = 2 (l + b)

→ 32 = 2l + 2(5)

→ 32 = 2l + 10

→ 32 - 10 = 2l

→ 22 = 2l

→ \sf \dfrac{22}{2} = l

→ 11 = l

→<u> 11 feet = longer side</u>

\therefore <u>Length</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>longer</u><u> </u><u>side</u><u> </u><u>is</u><u> </u><u>1</u><u>1</u><u> </u><u>feet</u><u>.</u>

7 0
2 years ago
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