4 years ago

3(x-5) = 5x - (3 - x)

Mathematics

2 answers:

alina1380 [7]4 years ago

8 0

Answer:

X=-4

Step-by-step explanation:

Arturiano [62]4 years ago

4 0

Answer: Isolate the variable by dividing each side by factors that don't contain the variable.

X= -4

Step-by-step explanation:

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Solve for a.<br> a^2=-3a+88

Sergio [31]

Answer:

$a=8,-11$

Step-by-step explanation:

$a^2=-3a+88$

$a^2+3a=88$

$a^2+3a-88=0$

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

$x=\frac{-3\pm\sqrt{3^2-4(1)(-88)} }{2(1)}$

$x=\frac{-3\pm\sqrt{9+352} }{2}$

$x=\frac{-3\pm\sqrt{361} }{2}$

$x=\frac{-3\pm19 }{2}$

$x=-11$ and $x=8$

Therefore, the values of $a$ are 8 and -11.

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3 years ago

Twenty-seven (27) months is months less than 3 years.

andriy [413]

Answer:

9 months

Step-by-step explanation:

3*12-27

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2 years ago

The ratio of girls to boys in the junior high band is 5 to 7. At the beginning of year, there were 72 students in the band. By t

rusak2 [61]

Ratio is 5girls:7boys with total 72 students
5+7= 12
72➗12= 6
6(5:7)= 30 girls : 42 boys

New ratio is 3:4 with 48 boys

48➗4= 12

So for girls 3x12= 36

So started with 30 girls ended with 36 girls... 6 girls joined band during the school year.

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A drinking straw has a circumference of 30 mm and a height of 210 mm.

dexar [7]

I think the straw can hold about 15000 mm^3.

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