3/7 of students at a school are boys . If there are 2282 students at the school. How many are girls .

Mathematics

1 answer:

Natasha2012 [34]2 years ago

7 0

If 3/7 are boys, then 4/7 have to be girls.

2282 / 7 = 326
326 x 4 = 1304

There are 1304 girls.

You might be interested in

What is the inverse of the function f(x) = 2x - 10?

love history [14]

F(x)=2x-10

y=2x-10

x=2y-10

x+10=2y-10+10 (add both sides by 10)

2y=x+10

2y/2=x+10/2 (divide both sides by 2)

y=1/2x+5

Final Answer: f^-1(x)=1/2x+5

6 0

2 years ago

What is 5/6 times 3/10

hichkok12 [17]

That will be;
5/6 x 3/10
15/60
3/12
1/4
Hope i helped

5 0

2 years ago

Read 2 more answers

Factorise fully<br>14x – 8

andriy [413]

Answer:

2(7x-4)

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Find the exact value of sin2 theta given sin theta =5/13, 90°<theta <180°

Zepler [3.9K]

Now, we know that 90°< θ <180°, that simply means the angle θ is in the II quadrant, where sine is positive and cosine is negative.

$\bf sin(\theta )=\cfrac{\stackrel{opposite}{5}}{\stackrel{hypotenuse}{13}}\impliedby \textit{now let's find the \underline{adjacent side}}
\\\\\\
\textit{using the pythagorean theorem}\\\\
c^2=a^2+b^2\implies \pm\sqrt{c^2-b^2}=a\qquad 
\begin{cases}
c=hypotenuse\\
a=adjacent\\
b=opposite\\
\end{cases}$

$\bf \pm\sqrt{13^2-5^2}=a\implies \pm\sqrt{144}=a\implies \pm 12 =a \implies \stackrel{II~quadrant}{-12=a}
\\\\\\
therefore \qquad cos(\theta )=\cfrac{\stackrel{adjacent}{-12}}{\stackrel{hypotenuse}{13}}
\\\\
-------------------------------\\\\
sin(2\theta )\implies 2sin(\theta )cos(\theta )\implies 2\left(\frac{5}{13} \right)\left( \frac{-12}{13} \right)\implies -\cfrac{120}{169}$

3 0

3 years ago

A boy needs to grill 13 pounds of meat for a cookout. Determine the Maximum cost per pound that he can afford if he wants to spe

marissa [1.9K]

Answer:

$5.38 per pound

Step-by-step explanation:

70/13=5.384615

5.38x13=69.94

6 0

2 years ago