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3 years ago

If g(x) = 2x^2 + 7x - 4, find g(-2)

Mathematics

2 answers:

nekit [7.7K]3 years ago

4 0

Step-by-step explanation:

g(-2)=2(-2)^2 +7(-2) -4

=8 -14 -4

= -10.

j(20)= -5-4(20)

=-5-80

= -85

maksim [4K]3 years ago

4 0

G(x) = 2x^2 + 7x - 4
g(-2) = 2(-2)^2 + 7(-2) - 4
= 2(4)+7(-2)-4
= 8-14-4
=-8

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Jessica traveled to Portland by car. Going there took 3 hours, and the return trip lasted 6 hours. Jessica averaged a speed of 4

Nataly_w [17]

Answer:

The average speed of the trip there is <u>86 mph.</u>

Step-by-step explanation:

Given:

Time taken to reach Portland = 3 hours

Time taken to come beck from Portland = 6 hours

Average speed for the returning trip = 43 mph

Distance traveled for the returning trip can be obtained by multiplying the returning speed by returning time. Therefore, distance for returning trip is:

$D=speed\times time=43\times 6=258\ miles$

Now, distance traveled for the return trip is same as going to the trip.

So, distance traveled by Jessica going to Portland = 258 miles.

Time taken to go there = 3 hours

Therefore, speed of the trip there is given as the ratio of distance and time and is given as:

$\textrm{Average speed}=\frac{Distance}{Time}\\\textrm{Average speed}=\frac{258}{3}=86\ mph$

Therefore, the average speed of Jessica's car to go to Portland is 86 mph.

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3 years ago

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3 years ago

Are rectangles ABCD and WXYZ congruent? Why or why not? Yes, all right angles were preserved. Yes, both rectangles have an area

Setler79 [48]

Answer:

D. No, there is not a rigid transformation or a combination of rigid transformations that will map ABCD to WXYZ.

Step-by-step explanation:

Two figures are congruent if their vertices can be mapped into one another by appropriate rigid transformation or combination of rigid transformations. Examples of the transformation are; reflection, dilation, rotation and translation.

Comparing the two figures, it would be observed that they are not congruent. Since there is not a rigid transformation or a combination of rigid transformations that will map ABCD to WXYZ.

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3 years ago

Read 2 more answers

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katovenus [111]

Answer:

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Step-by-step explanation:

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3 years ago

Identify the solution of each equation from the list given.

sp2606 [1]

Answer:

1.) The answer is b = 6

2.) The answer is t = 10

Step-by-step explanation:

For the first equation in order to fin out the answer we do.....

b + 8 = 14

b + 8 - 8 = 14 - 8

b = 6

For the second question we do....

25 - t = 15

25 - t + t = 15 + t

25 = 15 + t

25 - 15 = 15 + t -15

10 = t

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3 years ago