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3 years ago

There are 27 pupils. There are twice as many boys than girls. how many boys and girls are there

Mathematics

2 answers:

Ann [662]3 years ago

5 0

No. of boys=2x
no.of girls=x
total no. of pupils=2x+x
27=3x
27/3=x
x=no.of girls=9
no.of boys =2x=2*9=18

Anna71 [15]3 years ago

3 0

Let x = the numbers of girls
thus
the numbers of boys = 2x
x + 2x = 27
3x = 27
x = 9
2x = 2 . 9 =18
girls = 9 & boys = 18

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An ice-skating rink hosts different events on different days of the week they keep track of ages of the people who attended the

kirill [66]

Answer:

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Step-by-step explanation:

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3 years ago

X=-12-6y <br>-4x+5y=-39<br>slove by the system of substitution

Artist 52 [7]

X = -6y - 12
4x + 5y =-39

4x + 5y = -39
-4(-6y - 12) + 5y = -39
-4(-6y) + 4(12) + 5y = -39
24y + 48 + 5y = -39
29y + 48 = -39
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x = -6y - 12
x = -6(-3) - 12
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3 years ago

Help plzz <br><br> h=8/7 (28)+92/4

Nostrana [21]

Answer:

h = 55

Step-by-step explanation:

Solve for h by simplifying both sides of the equation, then isolating the variable.

4 0

2 years ago

Read 2 more answers

What's an equation that the passes through (-6,4) and is parallel to y=1/2x+8

deff fn [24]

By definition, if two lines share the same gradient, they are said to be parallel. So, we know for this equation, it must have a gradient of 1/2.

Now, since the point (-6, 4) passes through the line, we know it must satisfy the equation. Since we have a gradient/slope and a point, we can use the point-gradient form:

$y - y_1 = \frac{1}{2}(x - x_1)$ , where $(x_1, y_1)$ represents the points being passed through.

$y - 4 = \frac{1}{2}(x + 6)$
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3 years ago

15 Points!! Is this my teacher's fault? The math and the picture aren't making sense. The blue is my answer.

kogti [31]

Answer:

Your teacher is correct.

Step-by-step explanation:

So first we would have to find what A is equivalent to which is 48. This is because 180 - 132 = 48. Since we know that 132 is a supplementary angle, there has to be another supplementary angle that results in the sum of 180.

With this information in mind, we can create the expression:

2x + 4x + 48 = 180 (A triangle is equal to 180 degrees)

Now simply the equation:

6x + 48 = 180

6x = 132

6x/6 = 132/6

x = 22

Angle C = 44

Angle B = 88

3 0

3 years ago