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lilavasa [31]
3 years ago
5

If 25 percent of all students in the 7 Th grade have pets, and there are 40 students with pets, how many total students are in t

he 7 Th grade? Plz help I will give you 100 points
Mathematics
1 answer:
Marta_Voda [28]3 years ago
4 0

Answer:


Step-by-step explanation:

25%=40

25x4=100%

40x4=160 students

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The ratio of men to women working for a company is 5 to 6. If there are 187 employees total, how many women work for the company
disa [49]
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3 years ago
An equilateral triangle with side length 7 cm is shown in the diagram, work out the area of the triangle.
ElenaW [278]
If a triangle has sides of 7 cm and it is an equilateral you can draw a line right down the middle to form two congruent triangles.

These smaller triangles have a hypotenuse of 7cm and a base of 3.5 cm (7/2)

To work out the height, use Pythagoras’ theorem.

a^2 + b^2 = c^2 where c is the hypotenuse and a and b are the other two sides

7^2 - 3.5^2 = 36.75

Square root answer

= 6.06 cm

That’s the height of the triangle

Area of a triangle is base x height divided by 2

So 7 x 6.06 = 42.43…

/2

= 21.2 cm^2 to one d.p

Hope this helped!
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8 0
3 years ago
Y=-1/4x+6 when y equals 4
timofeeve [1]

Answer:

Step-by-step explanation:

Y = -1/4x+6, when y= 4

Same as saying

4 = -1/4x+6 , where y = 4

Multiply both sides by (4x+6)

4(4x+6) = -1

Opening the parentheses

16x + 24 = -4

16x = -4-24

16x = -28

Divide both sides by 16

X = -28/16

X = - 7/4

Ans = -7/4

8 0
3 years ago
If lengths of two sides of an isosceles triangle are 4 and 12, what is perimeter of the triangle?
damaskus [11]
4 + 12 +12 = 28cm
  so in conclusion it is 28
8 0
3 years ago
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