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Colt1911 [192]
3 years ago
6

Can someone help with this math problem? 3 (x+6) = 27

Mathematics
1 answer:
Ainat [17]3 years ago
7 0

Answer:

x = 3

Step-by-step explanation:

Use distributive property: a(b +c) =(a*b) + (a*c)

3(x + 6) = 27

3*x + 3*6 = 27

3x + 18  = 27 {Subtract 18 from both sides}

3x + 18 -18 = 27 - 18

         3x    = 9  {Divide both sides by 3}

        3x/3 = 9/3

x = 3

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Steven read 2 12 of the 8 books he
professor190 [17]

Answer:

1.33 percent of his 8 books.

Step-by-step explanation:

Assuming you mean \frac{2}{12} , that equates to 1.33 percent of 8, thus he has read <em>one whole book </em>and is reading his second one.

4 0
3 years ago
Can someone please help me i don’t get this at all!?
Verdich [7]
She bought N pencils last month for 288, as the amount is in pennies. This month she bought N+12 for 720.

288/N = 720 / (N+12)
288(N+12) = 720N
288N + 3456 = 720N
3456 = 720N - 288N
3456=432N
N=8

She bought 8 pencils last month for 288, which is 36 cents each. And she bought 20 pencils this month for 720 which is 36 cents each. Hope this helped :)
8 0
3 years ago
In triangle OPQ, p = 38 cm, q = 29 cm and Angle O=39º. Find the length of o, to the nearest
Lisa [10]

Answer:

The length of o is 24 centimeters

Step-by-step explanation:

In Δ OPQ

∵ Side p is opposite to ∠P

∵ Side q is opposite to ∠Q

∵ Side o is opposite to ∠O

→ To find side o we must use the cosine rule

∴ o = \sqrt{p^{2}+q^{2}-2(p)(q).cos(O)  }

∵ p = 38 cm

∵ q = 29 cm

∵ m∠O = 39°

→ Substitute them in the rule to find o

∴ o = \sqrt{(38)^{2}+(29)^{2}-2(38)(29).cos(39)}

∴ o = 23.92008154

→ Round it to the nearest centimeter (whole number)

∴ o = 24 centimeters

∴ The length of o is 24 centimeters

6 0
3 years ago
What is 12 divided by 12 i think its 146
MissTica

Answer:

12 divided by 12 is 1

Step-by-step explanation:

A calculator helped me

3 0
3 years ago
Read 2 more answers
A rectangle is placed around a semicircle as shown below. The width of the rectangle is 6 yd. Find the area of the shaded
morpeh [17]

Answer:

15.48 yd squared

Step-by-step explanation:

This is because 6 yards can be used as the radius of your circle. square your radius, so 6x6 which is 36 then multiply by 3.14. You then get 113.04. Since it is a semicircle, divide it by 2. You now get 56.52. If you know your radius, you know your diameter which is 12. 12 is also the length of the rectangle so 6x12 is 72 which is the area of the rectangle. Now subtract 56.52 from 72 to get 15.48 which is the shaded region of the rectangle. So I believe that you are doing yards, so 15.48 yd squared. I hope this helps :)

8 0
3 years ago
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