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sleet_krkn [62]
3 years ago
6

There are 220 students in year 9.

Mathematics
1 answer:
olganol [36]3 years ago
8 0
20% of 220 is 44 people so if you divide 220 by 2 you have 110 of each then add 44 to one and subtract 44 from the other the answer to a is 154 and the answer to b is 66
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Evaluate and simplify the following complex fraction. 2/3÷4/-9 please help me​
mariarad [96]

Answer: -3/2

Step-by-step explanation:

2

3

4

−9

=

2

3

−4

9

=

−3

2

7 0
3 years ago
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Write an equation for a line parallel to y=5x+4 and passing through the point (4,25)
Soloha48 [4]

Answer:

y = 5x + 5

Step-by-step explanation:

m = 5

y = mx + b

25 = 5(4) + b; b = 5

y = 5x + 5

4 0
2 years ago
Which should come next at the end of this series of numbers: 1, 2, 0, 3, -1?
Vinil7 [7]
The next number would be 4 because you add 1, then, subtract 2, add 3, subtract 4, meaning you would add 5 to -1 and get 4
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3 0
3 years ago
the legs of a right triangle have lengths of 28 meters and 21 meters. the hypotenuse has a length of 5x meters. what is the valu
Hitman42 [59]
We have a right triangle with
a = one leg = 28
b = other leg = 21
c = hypotenuse = 5x

use the pythagorean theorem (a^2+b^2 = c^2) and solve for x

a^2+b^2 = c^2
28^2+21^2 = (5x)^2
784+441 = 25x^2
1225 = 25x^2
25x^2 = 1225
(25x^2)/25 = 1225/25
x^2 = 49
sqrt(x^2) = sqrt(49)
|x| = 7
x = 7 or x = -7

Since the hypotenuse has length 5x meters, this means
5x = 5*7 = 35
or
5x = 5(-7) = -35

Toss out the negative length as it makes no sense. 

The only value of x is x = 7

Therefore the final answer is x = 7
6 0
2 years ago
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ankoles [38]
360 Calories in 3/4 cup of honey.
3 0
2 years ago
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