1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ella [17]
3 years ago
9

A bag contains 105 red and blue marbles. The ratio of red to blue marbles is 2:5. How many red marbles are in the bag?

Mathematics
1 answer:
V125BC [204]3 years ago
5 0

Answer:

30 red marbles

Step-by-step explanation:

If the ratio is 2 red marbles for every 5 blue marbles then you would add them together to find out how many marbles are in one group.

2+5=7

There are 7 marbles in each group.

Now we have to find out how many total groups there are by dividing the total amount of marbles by the amount in each group.

105÷7=15

There are 15 groups of 7 marbles.

Looking back at the ratio, we know that the 15 groups each have 2 red marbles and 5 blue marbles. So if there is 2 red marbles 15 times (2 marbles in 15 groups) we would multiply.

2×15=30

There are 30 red marbles.

I hope that makes sense.

You might be interested in
A triangle has three angles whose degree measures are a, b, and c. Which is greater?<br> a + b or c
sammy [17]
According to the triangle inequality theorem a+b > c
so a+b is greater. 
Hope it helps!
3 0
3 years ago
What is the product of -1 3/8 and 2 4/5
DanielleElmas [232]
All you have to do is change the fractions to improper fractions and multiply it acrossed, then simplify.

-3 17/2
7 0
3 years ago
Find the area of the figure. A) 114 cm2 B) 350 cm2 C) 418 cm2 Eliminate D) 447 cm2
ANEK [815]

Answer:

418cm2

Step-by-step explanation:

Separate the figure into a square and a triangle. Find the area of each and add.

s2 = area of square

192 = 361 cm

bh = area of triangle

(6)(19) = 57 cm2

361 + 57 = 418 cm2

5 0
3 years ago
Write the exact value of 0.428x2.75
bonufazy [111]

the exact value of 0.428x2.75 is 1.177, in order to get this you multiply both number with each other.

6 0
3 years ago
Write the equation of the line that passes through the points (-3, -2) and (0, -3)
Lady bird [3.3K]

Answer:

y= -1/3x -3

Step-by-step Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Yair is buying a dog carrier for his puppy. The carrier is 20 inches long, 13 inches wide, and 16 inches high. What is the volum
    8·1 answer
  • The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely. 81x2 – 49 The
    6·2 answers
  • HELP PLEASE I NEED IT ASAP
    8·2 answers
  • PLZ HELP ME!!!!!!!!!!!!
    7·1 answer
  • Madilyn and Penelope have 28 toys to build. Madilyn builds 3/4 of the toys, while Penelope builds 1/7. How many toys are there l
    12·1 answer
  • The total distance jim traveled on his bicycle during a 5 hour period is shown in the graph below.
    14·1 answer
  • PLEASE HELP ME!!! ILL GIVE BRAINLIEST TO RIGHT ANSWER
    13·1 answer
  • Given the following information, find the length of the missing side. Leave your answer as a simplified radical.
    12·1 answer
  • Quadrilateral CARD is similar to quadrilateral SNOW.
    8·1 answer
  • Sally earns commission for selling cars at the Nissan dealership. She earns 5.5% on
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!