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3 years ago

How do i figure this problem out ? 2+3a+9a=

1 answer:

4 0

Combine like terms to simplify this expression.

3a + 9a are like terms, so add them.

3a + 9a = 12a

12a + 2

Answer: 12a + 2

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When graphed, will the line x - 2y = 6 be

kumpel [21]

Answer:

Step-by-step explanation:

Slope of x-2y=6 is ½.

Slope of line through (5,2) and (3,6) = (6-2)/(3-5) = -2

The two slopes are negative reciprocals of each other (i.e., their product is -1), so the two lines are perpendicular.

8 0

3 years ago

Can someone help me?

Alex73 [517]

No i will not help you

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3 years ago

Engineering The equation for the cross section of a spotlight is y+5= 1/2x^2.

Marysya12 [62]

Answer:

$p=1/2\ or\ 0.5\ inches$

Step-by-step explanation:

From the question we are told that

Equation of cross section is $y+5= \frac{1}{2x^2}$

Generally the equation can be rewritten mathematically as

$y+5= \frac{1}{2}x^2$

$x^2=(y+5)2$

$(x-0)^2=(y-(-5))2$

Generally the equation of a parabola with vertical axis is mathematically given by

$(x - h)2 = 4p(y - k)$

Therefore comparing equations

$(x-0)^2=(y-(-5))2$

$4p=2$

$p=2/4$

The distance from the bulb to the vertex of the cross section is given by

$p=1/2\ or\ 0.5\ inches$

4 0

3 years ago

PLEASE HELP!!! Evaluate the expression when b=4 and y= -3 -b+2y

oee [108]

Answer: -10

Step-by-step explanation: All you have to do is plug the values into the equation. -4+2(-3). Then you solve the equation using PEDMAS.

1. -4+2(-3)

2. -4+(-6)

3.-4-6

4.-10

7 0

3 years ago

Read 2 more answers

What do i have to do?

Pachacha [2.7K]

Answer:

It is 136

Step-by-step explanation:

$h + {k}^{2} - j$

substitute respectively as in question:

$= 3 + {(11)}^{2} - ( - 12)$

open brackets:

$= 3 + 121 + 12 \\ = 136$

3 0

3 years ago

Read 2 more answers