In science class, the girl to boy ratio is 3 to 7.

Mathematics

2 answers:

gogolik [260]3 years ago

8 0

I would say that there are 29 boys in the class.

Yuki888 [10]3 years ago

3 0

Answer:

There are 35 boys in the class.

Step-by-step explanation:

This question can be solved as a rule of three.

In science class, the girl to boy ratio is 3 to 7.

This means that for each 10 students, 7 of them are boys and 3 are girls.

So if for 10 students, 7 of them are boys, how many are boys for 50?

7 boys - 10 students

x boys - 50 students

$10x = 7*50$

$10x = 350$

$x = 35$

There are 35 boys in the class.

You might be interested in

The width of a triangle is 33 try to find the length of the perimeter to make it at least 388

madreJ [45]

Answer:

11.75

Step-by-step explanation:

5 0

3 years ago

There were 212 089 visitors to a tourist attraction last year. Express this

Montano1993 [528]

Answer:

212,000

Step-by-step explanation:

212 089, better written as 212,089, rounds down to 212,000.

As an example, 212,589 would round up to 213,000, and

212,389 would round down to 212,000.

4 0

3 years ago

Write the absolute value inequality in the form Ix−bIc that has the solution set x≤−9 or x≥−5.

Valentin [98]

Answer:

$\large\boxed{|x+7|\geq2}$

Step-by-step explanation:

Look at the picture.

$|x-a|\geq b\\\\a=\dfrac{-9+(-5)}{2}=\dfrac{-14}{2}=-7\\\\b=-9-(-7)=-9+7=-2\\b=-5-(-7)=-5+7=2\\\\|x-(-7)|\geq2\\\\|x+7|\geq2\\\\Check:\\\\|x+7|\geq2\iff x+7\geq2\ \vee\ x+7\leq-2\qquad\text{subtract 7 from both sides}\\\\x+7-7\geq2-7\ \vee\ x+7-7\leq-2-7\\\\x\geq-5\ \vee\ x\leq-9\qquad CORRECT\ :)$