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m_a_m_a [10]
3 years ago
7

Sam has 400 apples she gives 160 away how much does she have

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0
400 - 160

the answer would be 240
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7x+2y=4 <br> y=x+1<br> Solve the system of equations.<br> (1/3,4/3)<br> (2/9,11,9)<br> no solution
Lunna [17]

Answer: SECOND OPTION

Step-by-step explanation:

You can solve the system of equations by the method of substitution:

- You must susbtitute the second equation into the first equation and solve or x:

7x+2(x+1)=4\\7x+2x+2=4\\9x=4-2\\9x=2\\x=\frac{2}{9}

- Now, you must susbtitute the value of x obtained above into the second equation to calculate the value of y. Then, you have:

y=\frac{2}{9}+1\\\\y=\frac{2+9}{9}\\\\y=\frac{11}{9}

Therefore, you obtain:

(\frac{2}{9},\frac{11}{9})

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Answer:

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I’m learning this right now but the photos are blurry I can’t see it that well
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Emilia has a bag of colored marbles. The bag contains the same ratio of red marbles to blue marbles as the ratio of green marble
scoray [572]
Red =18
blue=48
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In doing this you can use the factoring method to do this faster. Start by dividing both sides by two to simplify the equation. X^2 now equals 100.

You can move 100 to the other side of the equation so that x^2-100=0. You can now factor and solve using the zero product property.

x^2-100=0
(x+10)(x-10) = 0
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3 years ago
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