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Andrew [12]
4 years ago
15

7. There are 442 boy students in Maple Crest 7th grade class. If 15% of the

Mathematics
1 answer:
Rus_ich [418]4 years ago
8 0

Answer:

520

Step-by-step explanation:

If you make it into a proportion where the percent of boys is 85% then you get 85/100=442/w. When you cross multiply you get 85w=44200. Then you simplify and get w=520 so there are 520 students in total

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m_a_m_a [10]
Perimeter is the beat word to describe equal shares of shapes
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4 years ago
Plz help before 11:59 pm I will mark brainliest
olganol [36]

Answer:

1.- 140 in²

2.- 2.25 in²

3.- 43.25 in²

4.- 7.5 in²

5. 349.75 in²

Step-by-step explanation:

4 congruent triangles mean 4 triangles same measurement

area 1 triangle=(B*H)/2=(10*7)/2=35in²

for area of the roof are 4 by area 1 triangle=4*35=140 in²

2.- area hole. Hole is a square so area Is side by side

area=1.5*1.5=2.25

3.- area front except the hole. As the side of front is isosceles trapezoide which it’s area is (B1+B2)H/2 where B1=8 in and B2=5 in and H=7 in

so arera with hole=(8+5)*7/2=45.5 in²

7 0
4 years ago
Read 2 more answers
Each side of a square is lengthenedBy 4 inches. The area of the new large square is 25 square inches. Find the length of a side
melisa1 [442]

Answer:

1 inch.

Step-by-step explanation:

The length of a side of the new square = square root of 25 = 5 ins.

So a side of the original square = 5 - 4 = 1 inch.

7 0
4 years ago
Which equation should be used to find the volume of the figure?
dexar [7]

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O V=3(10XB)(12)

Step-by-step explanation:

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3 years ago
What is the mean of this data set? {14, 7, 2, 8, 3} Enter your answer as a decimal in the box.
Assoli18 [71]

The mean of the data set is 6.8.

<h3>What is the mean?</h3>

Mean is the average value of the given set of observations. In statistics, we also come across different types of mean such as Arithmetic, Geometric and Harmonic mean.

Given

The data set is 14, 7, 2, 8, 3.

The mean of the data set is given by;

\rm Mean = \dfrac{Sum \ of \ all \ data}{Number \ of \ data}\\\\Mean =\dfrac{14+7+2+8+3}{5}\\\\Mean = \dfrac{34}{5}\\\\Mean=6.8

Hence, the mean of the data set is 6.8.

To know more about mean value click the link given below.

brainly.com/question/4209766

3 0
2 years ago
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