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2 years ago

Which expression has been solved with the following number line?

Mathematics

1 answer:

AysviL [449]2 years ago

3 0

Answer:

Step-by-step explanation:

Add 116 to 123 and then subtract it by the larger number and 323

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(x+2)+ 3(x+2)<br><br> Rewrite the expression as equivalent prouduct of two binomials

goblinko [34]

(x+2) + 3(x+2)
x+2+3x+6
.. ( collect like terms )
= 4x+2+6
= 4x + 8 is your answer

6 0

3 years ago

Which equation best represents the line of best fit for the scatterplot?

Elena L [17]

Answer:

The answer for this problem is

C) y = -x + 6

Step-by-step explanation:

I know this because I just did the test

5 0

3 years ago

a parabola contains the points (0,0),(-1,-2) and (1,6). what is the equation of the parabola in standard form?

tensa zangetsu [6.8K]

Let the equation be:

y = ax^2 + bx + c.

Then, substitue the three points into the equation.

First point: 0 = a0^2 + b0 + c.

So c = 0.

Second point: -2 = a(-1)^2 + b(-1) + c.

So a - b + c = -2.

Third point: 6 = a*1^2 + b*1 + c.

So a + b + c = 6.

We know that c=0 already, so we substitute c=0 into the last two equations and we would get:

a - b = -2

a + b = 6

We add the two equations and we get:

2a = 4

a = 2

Then, we substitute a=2 into a-b=-2 and we get:

-b = -4

b = 4

Now we know a = 2, b = 4, and c = 0

Then, the equation of the parabola would be:

2x^2 + 4x

5 0

2 years ago

Maria drove to a business appointment at 50mph in the morning. Her average speed on the return trip in the afternoon was 40 mph.

MakcuM [25]

Answer:

Distance to appointment point = 5 miles

Step-by-step explanation:

Let s be the distance to the appointment point,

We have Maria drove to a business appointment at 50mph in the morning.

Time taken in the morning

$t_m=\frac{s}{50}=0.02s$

Her average speed on the return trip in the afternoon was 40 mph.

Time taken in the afternoon

$t_a=\frac{s}{40}=0.025s$

Given that the return trip took 1/4hr longer because of traffic.

That is

$t_a-t_m=\frac{1}{4}hr=0.025hr$

Substituting

$t_a-t_m=0.025hr\\\\0.025s-0.02s=0.025\\\\s=5miles$

Distance to appointment point = 5 miles

7 0

3 years ago

(w + 4)(w2 + 3 w-6)<br> find the product.

GrogVix [38]

Answer:

6w+2

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers