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nevsk [136]
3 years ago
11

Sam is doing his math homework. Hey completes 10 probelms every 30 minutes. How many porbelms can sam complete in 60 minutes?

Mathematics
2 answers:
svp [43]3 years ago
8 0
Put the ratios into fraction form. Since you do not know how many problems, replace it with an unknown number a.k.a. a variable. 

10/30 = x/60

Since you can get 30 to 60 by multiplying by 2, multiply everything on the left side by 2.

Then, you get 20/60, which means 20 = x. So, he can complete 20 minutes an hour.
Karolina [17]3 years ago
4 0
He can complete 20 problems in 60 minutes
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Add or subtract the linear expressions and simplify:
kherson [118]
0.1(71x+33)
the soultion is
6 0
3 years ago
Hazel's town voted on a new speed limit. 10% of the 70 voted were in favor of the new speed limit. How many votes were not in fa
devlian [24]

Answer:

63 votes

Step-by-step explanation:

10% of 70 is 7

70-7=63

8 0
4 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=Find%20the%20missing%20side%20or%20angle%20of%20this%20equation.%20This%20is%20not%20a%20right
Vlad [161]

Answer:

15.6

Step-by-step explanation:

the angle = 180-61-42=77°

x = 14.sin 77/sin 61

= 14×0.97/0.87

= 15.6

4 0
3 years ago
What do i do first my first step to do
kirza4 [7]
You need to find an area of one rectangular wooden plank 8*3,
and then top and the bottom area is 2*8*3
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8 0
4 years ago
Using the diagram below, find x.
Serjik [45]

The value of x is 28

Solution:

The approximate image of the question is attached below.

Given data:

The angles of the triangle are x°, (2x + 5)° and (3x + 7)°.

By triangle sum theorem,

<em>Sum of all the angles of the triangle = 180°</em>

x° + (2x + 5)° + (3x + 7)° = 180°

x° + 2x° + 5° + 3x° + 7° = 180°

6x° + 12° = 180°

Subtract 12° from both sides of the equation, we get

6x° = 168°

Divide by 6° on both sides of the equation, we get

x° = 28°

x = 28

The value of x is 28.

4 0
4 years ago
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