Percent is parts out of 100 so
45%=45/100=9/20
'of' means multiply
18 =9/20 times something
multiply both sides by 20/9 to clear fraction
360/9=something
40=something

the value is 40

8 0

3 years ago

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Which is the ordered pair for the translated point D'?

olga_2 [115]

$(x;\ y)\\\\D(-3;\ 1)\\\\right(+),\ left(-)\to x\\up(+),\ down(-)\to y\\\\left\ 4\to-3-4=-7\\up\ 0\to1+0=1\\\\Answer:\boxed{D.\ (-7;\ 1)}$

7 0

3 years ago

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Solve by substitution <br> X^2= 2y + 10<br> 3x-y = 9

Viefleur [7K]

Answer:

$x=-4\\ x=-2\\ y=-21\\ y=-15$

Step-by-step explanation:

$x^{2} =2y+10$

$y=-9+3x$

$x^{2} =2(-9+3x)+10$

$x^{2} =-18+6x+10$

$x^{2} =6x-8$

$x^{2} -6x+8$

$x=-4, -2$

$y=-9+3(-4)$

$y=-9-12$

$y=-21$

$y=-9+3(-2)$

$y=-9-6$

$y=-15$

8 0

3 years ago

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