3 years ago

What a Expression that has a value -8

2 answers:

8 0

Answer:

As most the enswers said that it was enswe i had tha question too so as you know that it's coorest about the enswerthat the persong say i agree

Step-by-step explanation:

kirill [66]3 years ago

5 0

Answer:

(-4+2*2)+8

Step-by-step explanation:

2*2=4

-4+4= 0

0+8= -8

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Simplify –2x3y × xy 2.

user100 [1]

$-2x^3y\cdot xy^2=-2x^{3+1}y^{1+2}=-2x^4y^3$

Used:

$a^n\cdot a^m=a^{n+m}$

Answer: C. –2x^4y^3

8 0

3 years ago

There are 416 students who are enrolled in an introductory geology course. if there are seven boys to every six girls, how many

Alenkinab [10]

$\text{Let the number of boys be x and number of girls be y.}\\
\\
\text{and there are total 416 students enrolled in the course. so we have}\\
\\
x+y=416 \ \ \ \ \ \ \ \ \ \ ......(i)\\
\\
\text{also given that there are seven boys to every six girls, that is}\\
\\
\frac{x}{y}=\frac{7}{6}$

$\Rightarrow 6x=7y\\
\\
\Rightarrow y=\frac{6x}{7}\\
\\
\text{substitute this value of y in (i), we get}\\
\\
x+\frac{6x}{7}=416\\
\\
\Rightarrow \frac{7x+6x}{7}=416\\
\\
\Rightarrow \frac{13x}{7}=416\\
\\
\Rightarrow x=\frac{416\times 7}{13}\\
\\
\Rightarrow x=224$