MATHEMATICS MIDDLE SCHOOL

Thirty students have planned picnic. The ratio of girls to boys is 3 : 7. How many boys are there? 30 boys
9 boys
21 boys
10 boys

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Answer 2

Answer: 10 i think sorry if its worng

Related Questions

It takes 6 and 1/2 cups of chocolate syrup to make 4 and 1/2 gallons of milk. How many cups of syrup would it take to make 9 gallons of milk?
Which of the following is true about a linear function? It may curve in some parts and be horizontal in others.It must cross the origin. It has a constant rate of change. It must contain only positive values.
Explain why 7 times x/7=x. How does your answer help you solve a division equation such as x/7=2?
Benito has 42 orange juice boxes and 36 grape juice boxes. If Benito gives each friend an equal number of each type of juice box, what is the greatest number of friends with whom he can share juice boxes?
Which graph represents -x+ 8y > - 24

The circus ringleader, Ms. Evelyn, wants all the employees to have miniature cakes in the shape of either a circus ball or a clown hat. She wants the clown hat dessert and the circus ball dessert to be the same volume. The radius of both cake pieces will be 3 in. What must the height of the clown hat cake be in order for the two cakes to be equal in volume? Round to the nearest hundredth if necessary. Explain or show your work.

Answers

im assuming the hat is a cylinder and the ball is a sphere
volume of cylinder (hat) = pi * r^2 *h
volume of sphere = 4/3 pi r^3
plug in your radius to first find volume of sphere
4/3 * pi * 3^3 = 36pi
set that equal to the formula for cylinder and solve
36pi = pi * 3^2 * h
36pi = 9pi * h
36pi / 9 pi = h
4=h

How many milligrams of calcium are in 100 grams of beef, if the beef has 12 milligrams of calcium? Please explain how you did it. -thanks!

Answers

You must also know the total weight of the beef. You forgot to mention it but let's say the beef weighs 450 grams and is known to contain 12 milligrams of calcium. Then the amount of calcium per 100 grams would be found like this: 12mg ... 450g, xmg ... 100g <=> x = 100*12/450 <=> x = 120/45 <=> x = 2.66mg

A word or phrase used to show division in a word problem is?

Answers

divided by
the quotient of
per
ratio of
out of

divided by
quotient of
per
ratio of
out of

Alexander found the means-to-MAD ratio of two data sets to be 2.1.What can he conclude about the distributions?

A.
They are similar.

B.
They are somewhat similar.

C.
They are different.

D.
They are identical.

Answers

Okay, So We Need To First Remember The Rule About Means-To-Mad Ratios. It Is :
"You can use the means-to-MAD ratio to describe the similarity of two distributions. Divide the positive difference in the means by the larger of the two MAD values. If this ratio is 1 or less, the two distributions are similar. If this ratio is between 1 and 2.5, the two distributions are somewhat similar. If this ratio is greater than 2.5, the two distributions are different. "
So, Lets Use This Info. 2.1 Is Greater Than 1, So They Are Not Similar. It Is Greater Than 1 But Less Than 2.5, So, They Are Somewhat Similar. 2.1 Is Less Than 2.5, So They Are Not Different. They Cant Be Identical, Because That Would Mean It Is 0. So, This Means That The Answer Is They Are Somewhat Similar. I Hope This Helps!

Answer:

Step-by-step explanation:

Because they are somewhat similar.

100 is 10 times as much as

Answers

The correct answer is: 10

Explanation:
"100 is 10 times as much as" can be translated in Mathematical form as follows:

10 * x = 100 (Where "x" represents the number which will be multiplied with 10 to give the result 100)
x = $(100)/(10)$
x = 10

Hence 100 is 10 times as much as 10.

How do I describe the shape of a histogram?