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liberstina [14]

3 years ago

10

there are 12 boys and 13 girls in a class. There are 10 boys and 15 girls in a second class. what is the probability that both s

tudents will be boys from either class?

1 answer:

o-na [289]3 years ago

3 0

22 out of 50 would be the answer

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If f(x) = x/2 plus 8 what is f(x) when x = 10

kicyunya [14]

$f(x)=\frac{x}{2}+8$

Given y = f(x)

Substitute x = 10.

$f(10)=\frac{10}{2} +8\\f(10)=5+8\\f(10)=13$

Therefore f(x) = 13 when x = 10

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0.07 is 10 times as great as

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0.07 is 10 times greater than 0.007

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What is the numerical expressions for Add 12 and 6,then divide by 2

lord [1]

Answer:

9

Step-by-step explanation:

Well 12 + 6 = 18 divided by 2 is 9

So 9 is your answer.

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3 years ago

What is 90,000,000,000 in word format

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3 years ago

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How to solve it ...<br><br>1. 5-2x²-6x<br>2. (x+3) (x+4)=0

givi [52]

$1.\\5-2x^2-6x=0\\-2x^2-6x+5=0\\\\a=-2;\ b=-6;\ c=5\\\\\Delta=b^2-4ac\to\Delta=(-6)^2-4\cdot(-2)\cdot5=36+40=76\\\\x_1=\frac{-b-\sqrt\Delta}{2a}\to x_1=\frac{6-\sqrt{78}}{2\cdot(-2)}=\frac{6-\sqrt{4\cdot19}}{-4}=\frac{6-2\sqrt{19}}{-4}=\frac{\sqrt{19}-3}{2}\\\\x_2=\frac{-b+\sqrt\Delta}{2a}\to x_2=\frac{3-\sqrt{19}}{2}$

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$2.\\(x+3)(x+4)=0\iff x+3=0\ \vee\ x+4=0\\\\x=-3\ \vee\ x=-4$

8 0

3 years ago