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3 years ago

I need to know the answer

Mathematics

1 answer:

Yuri [45]3 years ago

3 0

Answer:

A only.

Step-by-step explanation:

A. 2^2 + 3(2) - 10 = 0

4 + 6 - 10 = 0

10 - 10 = 0

0 = 0 (correct)

-5^2 + 3(-5) - 10 = 0

25 + (-15) - 10 = 0

10 - 10 = 0

0 = 0 (correct)

B. 2^2 - 3(2) - 10 = 0

4 - 6 - 10 = 0

-2 - 10 = 0

-12 = 0 (not correct)

-5^2 - 3(-5) - 10 = 0

25 - (-15) - 10 = 0

40 - 10 = 0

30 = 0 (not correct)

C. 2^2 + 7(2) + 10 = 0

4 + 14 + 10 = 0

18 + 10 = 0

28 = 0 (not correct)

-5^2 + 7(-5) + 10 = 0

25 + (-35) + 10 = 0

-10 + 10 = 0

0 = 0 (correct)

D. 2^2 - 7(2) + 10 = 0

4 - 14 + 10 = 0

-10 + 10 = 0

0 = 0 (correct)

-5^2 - 7(-5) + 10 = 0

25 - (-35) + 10 = 0

60 + 10 = 0

70 = 0 (not correct)

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A single story house is to be built on a rectangular lot 70 feet wide by 100 feet deep. The shorter side of the lot is along the

dedylja [7]

Answer:

250 sq ft

Step-by-step explanation:

Since the shorter side is along the street and the setback is 10ft from each side, the house is 50 ft wide

and 100 -20 -30 = 50 ft long

50 x 50 = 250 sq ft

3 0

3 years ago

Select all the correct answers.

amid [387]

Answer:

It costs $15 a month to play the video game.

The initial cost is $45.

The y-variable represents the cost in dollars.

The x-variable represents the number of months.

Step-by-step explanation:

If you break the function down, you're going to have:

Total = Monthly Cost + Initial Cost

In this case, 15x is your monthly cost, as you can think of x as the number of months meaning:

15 for the first month (x = 1)
30 for the second month (x = 2)
45 for the third month (x = 3), and so on

Our initial cost is always going to be a set amount, thus our constant, $45.

This leaves y as our total, which makes sense, as it's all alone on one side of the equation, where as all the costs are bunched together on the right side.

Hope this helps!

6 0

3 years ago

Read 2 more answers

Vhat is the ninth term of the geometric sequence 3,9, 27, ... ?

ExtremeBDS [4]

I think 36 but not sure

3 0

3 years ago

The volume of the rectangular pyramid is 840 cubic feet.

sergiy2304 [10]

Answer:

23232

Step-by-step explanation:

323233232232

7 0

2 years ago

Make b the subject of this equation A = 1/2 x b x h

aalyn [17]

The equation is $b=\frac{2A}{h}$

Step-by-step explanation:

Let us revise how to make a variable subject of an equation

Write the equation and circle the variable you want to make it subject
Keep it in one side and move all other in the other side
Make the coefficient of the subject 1

∵ A = $\frac{1}{2}$ × b × h

∵ b is the subject

∴ Multiply the two sides by 2

∴ 2A = b × h

- Divide both sides by h

∴ $\frac{2A}{h}= b$

- Switch the two sides

∴ $b=\frac{2A}{h}$

The equation is $b=\frac{2A}{h}$

Learn more:

You can learn more about the equations in brainly.com/question/10708697

#LearnwithBrainly

8 0

3 years ago