3 years ago

In a class of 30 pupils, there are 18 girls. what percentage of the pupils are boys

Mathematics

1 answer:

vovikov84 [41]3 years ago

6 0

Answer:

40%

Step-by-step explanation:

Express the boys as a fraction of the whole class then multiply by 100%

number of boys in class = 30 - 18 = 12

percentage of boys = $\frac{12}{30}$ × 100% = 40%

You might be interested in

Solve in(5x+7)=8 round to the nearest thousandth

Ivan

Answer:

$x=\frac{1}{5}$

$x=0.2$

Step-by-step explanation:

$(5x+7)=8$

$5x+7=8$

Subtract 7 from both sides.

$5x+7-7=8-7$

Simplify.

$5x=1$

Divide both sides by 5.

$\frac{5x}{5} =\frac{1}{5}$

Simplify.

$x=\frac{1}{5}$

Decimal form:

0.2

7 0

3 years ago

Read 2 more answers

You steal points u get reported

Svet_ta [14]

False, the x intercept is always shown as (#,0). So technically the x value would be any #. The ordered pair for a x intercept has a y value of 0.

8 0

3 years ago

Read 2 more answers

Solve by completing the square. x2^+8x= -20

Schach [20]

Step-by-step explanation:

x2^+8x=-20

9x^2=20

x^2=20-9

x^2=11

√x^2=√11

x=√11

3 0

3 years ago

What is the place vaule of the 7 in 9.357

kumpel [21]

The 7 is in the Ones place

4 0

3 years ago

Read 2 more answers

I will give brainliest answer

snow_tiger [21]

Step-by-step explanation:

inner region

A=πr^2

A=π*6^2

A=π*36cm^2

A=113.09cm^2

shaded region(outer)

A=πr^2

A=π*9^2

A=π*81cm^2

A=254.46cm^2

Area of shaded region=254.46cm^2-113.09cm^2

=141.37cm^2

Mark brianliest if my answer suit your question

5 0

3 years ago

Read 2 more answers