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Anna007 [38]
3 years ago
6

Find the area of the figure below​

Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

99cm^{2}

Step-by-step explanation:

12x4=48

12x3=36

12-4-5=3

3x5=15

48+36+15=99

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The base of a triangle is 9 inches more than 3 times the height. if the area of the triangle is 105 square inches, find the base
wolverine [178]
So to solve you need to set up equations, Using h as the height. So the base is 9 inches more  (+9)  than 3 times the height (3h) so 3h+9 equals the base. You have the area so you need to plug in the equation for the base and h for height and divide it all by 2. h(3h+9)/2=105. after you solve that and get h by itself you should get h= 7 and the b= 30 
4 0
3 years ago
How many halves are in the following<br> 12, 10, 13, 15,8 and 5
muminat
Since there are two halves in a whole, you can times each number by 2 to get the number of halves it has.

12*2=24
10*2=20
13*2=26
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3 years ago
Find the value of x. <br> A. 2 <br> B. 3 <br> C. 4 <br> D. 5
masya89 [10]
The correct answer is three.
7 0
3 years ago
A rectangular playground is to be fenced off and divided in two by another fence parallel to one side of the playground. seven h
Lelu [443]


120 + 120 + 120 + 180 + 180
3 0
3 years ago
The percent of working students increased 8.1 to 40.5 what was the present prior to increase
Dmitrij [34]

Answer:

  32.4

Step-by-step explanation:

prior + 8.1 = 40.5 . . . . . . seems to model the problem statement

prior = 32.4 . . . . . . . subtract 8.1 from both sides

Prior to the increase the percent was 32.4.

_____

<em>Comment on the problem statement</em>

When you're talking about a percentage increase in a percentage, it is almost never clear whether you're talking about the percentage of the underlying number, or the percentage of the percentage.

Here, we assume the 8.1 is a percentage of working students, not a percentage of the percentage of workings students. If you actually intend the latter, the percentage before the increase was about 37.465%.

6 0
3 years ago
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