3 years ago

Which expression has a value that is equivalent to 5n + 13 when n=−5 ?

Mathematics

1 answer:

Paladinen [302]3 years ago

6 0

The answer is the second one! n^2 +13

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Let f(x) = 2x2 + x − 3 and g(x) = x + 2.<br><br> Find (f • g)(x)

katen-ka-za [31]

Answer:

$(f\cdot g)(x) = 2x^3 + 5x^2-x-6$

Step-by-step explanation:

We are given the two functions:

$f(x)=2x^2+x-3\text{ and } g(x)=x+2$

And we want to find:

$(f \cdot g)(x)$

Recall that this is equivalent to:

$=f(x)\cdot g(x)$

Substitute. Hence:

$(f\cdot g)(x)= (2x^2+x-3)(x+2)$

Expand if desired:

$\displaystyle = x(2x^2+x-3)+2(2x^2+x-3) \\ \\ = (2x^3+x^2-3x)+(4x^2+2x-6) \\ \\\ = 2x^3 + 5x^2-x-6$

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3 years ago

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Which of the following pair(s) of circles have l as a common internal tangent? Select ALL that apply.

kkurt [141]

It looks like only A and B, but could be trick question?

7 0

4 years ago

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Given the equation Y -3 equals 1/2 (X +6 )in point slope form identify the equation of the same line in standard form

liberstina [14]

The standard form of a line:

$Ax+By=C$

We have the equation of a line in the slope-point form:

$y-3=\dfrac{1}{2}(x+6)$ use distributive property

$y-3=\dfrac{1}{2}x+3$ add 3 to both sides

$y=\dfrac{1}{2}x+6$ multiply both sides by 2

$2y=x+12$ subtract x from both sides

$-x+2y=12$ change the signs

$x-2y=-12$

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4 years ago

Find the slope and the y-intercept of the graph of the linear equation. y=−6−23x

Debora [2.8K]

Answer:

Step-by-step explanation:

this equation is written in y = mx + b form

m = slope

b = the y intercept

so if we rearrange the equation to

y = -23x -6

the slope is -23

the y intercept is (0, -6)

8 0

3 years ago

Determine whether the two figures are similar. if so give the scale factor of the smaller figure to the larger figure. The figur

just olya [345]

Yes they are similar, scale factor = 4.

6 0

4 years ago