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3 years ago

Please explain (picture attached)

Mathematics

1 answer:

Dafna1 [17]3 years ago

6 0

Answer:

I think the answer is C.

Step-by-step explanation:

You might be interested in

1. Factor completely: 2a^2 + 6a + 18

USPshnik [31]

Answer:

$2(a+3)(a+3)$

$5(x+1)(x-1)$

$3t(t-2)(t+8)$

$n(2+n)(2-n)$

Step-by-step explanation:

Factor each expression

$2a^2 + 6a + 18$

$2(a^2 + 3a + 9)$

product =9 and sum =6

3 times 3 is 9

3 plus 3 is 6

$2(a+3)(a+3)$

2. Factor completely: 5x^2 − 5

GCF is 5

$5x^2 - 5$

$5(x^2 - 1)$

$5(x+1)(x-1)$

3. Factor completely: 3t^3 + 18t^2 − 48t

$3t^3 + 18t^2 -48t$

$3t(t^2 + 6t -16)$

product is -16 and sum is 6

-2 times 8 = -16

-2+8=6

$3t(t^2 + 6t -16)$

$3t(t-2)(t+8)$

4. Factor completely: 4n − n^3

$n(4 -n^2)$

$n(2+n)(2-n)$

7 0

3 years ago

Find the value of k if the slope of the line 2x-ky+3=0 is 5/3

AVprozaik [17]

Step-by-step explanation:

Hey there!

Here;

The equation is: 2x - ky+ 3= 0.

And the slope is 5/3.

Slope of the equation= (-coeff. of X/ coeff. of y)

5/3 = -2/-k

k = 2*3/5

Therefore, k = 6/5.

Hope it helps!

5 0

3 years ago

Determine the standard form of the equation of the line that passes through (-2, 0) and (-8,5)

Naya [18.7K]

Answer:

$-5x-6y=10$ ← in standard form

Step-by-step explanation:

The equation of a line in standard form is.

$Ax+By=C$

were

A is a positive integer and

B, C are integers

As the equation in point-slope form

$y-y_1=m\left(x-x_1\right)$

where m is the slope and $\left(x_1,\:y_1\right)$ is a point on the line.

$\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-2,\:0\right),\:\left(x_2,\:y_2\right)=\left(-8,\:5\right)$

$m=\frac{5-0}{-8-\left(-2\right)}$

$m=-\frac{5}{6}$

using $m=-\frac{5}{6}$ and $\left(x_1,\:y_1\right)=\left(-2,\:0\right)$ then

$y-0=-\frac{5}{6}\left(x-\left(-2\right)\right)$

$-\frac{5}{6}\left(x-\left(-2\right)\right)=y-0$

$6\left(-\frac{5}{6}\left(x-\left(-2\right)\right)\right)=6y$

$-5\left(x+2\right)=6y$

$-5x-10=6y$

$-5x-6y=10$ ← in standard form

8 0

3 years ago

Y=1/2+2 in standard form

mina [271]

Answer:

So Y would be 2 1/2, but in standard form it's 2.5

Step-by-step explanation:

So basically, you just have to add the numbers together. 2 + 1/2 = 2 1/2. 50 is half of 100, and this is 1/2 we're talking about. So we can change it to 2.5

You're welcome.

6 0

4 years ago

Read 2 more answers

Solve for x: 0.75x + 3 = 6 (x - 3 I need to show my work

marusya05 [52]

Answer:

x=4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

0.75x+3=6(x−3)

0.75x+3=(6)(x)+(6)(−3)(Distribute)

0.75x+3=6x+−18

0.75x+3=6x−18

Step 2: Subtract 6x from both sides.

0.75x+3−6x=6x−18−6x

−5.25x+3=−18

Step 3: Subtract 3 from both sides.

−5.25x+3−3=−18−3

−5.25x=−21

Step 4: Divide both sides by -5.25.

−5.25x/-5.25 = -21/-5.25

Answer: x=4

6 0

3 years ago

Read 2 more answers