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2 years ago

If A = -3n + 2, and B = 5n - 7, what is the value of A + B, in simplest form?

Mathematics

1 answer:

Sever21 [200]2 years ago

4 0

Answer:

I think the answer is 2n-5

(-3n + 2)+(5n - 7)

-3n+5n=2n

2+(-7)=-5

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tester [92]

Answer:

Step-by-step explanation:

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2 years ago

3+7+11+15+19+23+27<br>1.t1=<br>s1=<br>express t1 in terms of s1

icang [17]

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2 years ago

Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Marrrta [24]

Answer:

$\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Step-by-step explanation:

$\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine $\frac{1}{c} + \frac{1}{h}$

$\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine the bottom, too.

$=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}$

Apply the fraction rule

$=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}$

Cancel

$=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Therefore, $\frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

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3 years ago

The following circle graph represents how the Townsends spend their monthly income. What is the central angle measure of the sec

mars1129 [50]

Please say brainliest.

It would be 18 degrees.

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3 0

3 years ago

Find an exponential function of the form y = ab* that passes through the points (0,4)

IrinaK [193]

Answer:

2nd option

Step-by-step explanation:

given an exponential function in the form y = a $b^{x}$

to find a and b use the coordinate points it passes through

using (0, 4 ) , then

4 = a $b^{0}$ [ $b^{0}$ = 1 ] , that is

a = 4 , so

y = 4 $b^{x}$

using (2, 100 )

100 = 4b² ( divide both sides by 4 )

25 = b² ( take the square root of both sides )

$\sqrt{25}$ = b , that is

b = 5

then exponential function is

y = 4 . $5^{x}$

6 0

2 years ago