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Inessa05 [86]
3 years ago
14

Can someone explain this please?

Mathematics
1 answer:
matrenka [14]3 years ago
4 0
That is hard asl rip g you done for
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7. If -3 < x < 3, determine c and d for the inequality c < 2x + 1 < d
pogonyaev

Answer:

C= -5

D = 7

Step-by-step explanation:

- 3 < x < 3 \\    \\  - 6 < 2x < 6 \\  \\  - 6 + 1 < 2x + 1 < 6 + 1 \\  \\  - 5 < 2x + 1 < 7

6 0
2 years ago
A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.
Whitepunk [10]

Answer:

A=81\pi\ m^{2}

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

C=2\pi r

we have

C=18\pi\ m

substitute and solve for r

18\pi=2\pi r

simplify

18=2 r

r=9\ m

Step 2

Find the area of the circular cross section

The area of the circle is equal to

A=\pi r^{2}

we have

r=9\ m

substitute

A=\pi (9)^{2}

A=81\pi\ m^{2}

8 0
3 years ago
Help me solve the out and inputs of the table
velikii [3]
The in is -5 the out for 7 is -21 the out for -3 is 9the infor 15 is -5 the out for -10 is 30
5 0
3 years ago
There are three small rounds of cheddar cheese in Grace’s refrigerator.She want to bring a small wedge of cheese in her lunch fo
Snowcat [4.5K]

Answer: 1/4 round.

Step-by-step explanation:

Grace has 3 wheels of cheese and she wants to eat an equal amount each day for 12 days. So each wheel needs to last 12/3 = 4 days. So then she can eat 1 wheel/4 days = 1/4 wheel per day.

3 0
3 years ago
Do you know how to use the Pythagorean identity?
goblinko [34]

The Pythagorean theorem or identity is given by

  • H²=P²+B²
  • P²=H²-B²
  • B²=H²-P²

Where

  • B is base of right angle traingle
  • H is Hypotenuse
  • P is perpendicular
8 0
1 year ago
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