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
Archy [21]
2 years ago
9

The ratio of red to blue marbles in a bag is 2:5. If there are 65 blue marbles in the bag, how many red marbles are there? Let x

represent the number of red marbles. Set up a proportion and cross multiply to solve.
Mathematics
1 answer:
hoa [83]2 years ago
8 0

Answer:

first get the total ratio; 2 + 5 = 7

so the fraction of blue marbles is 5/7

then assume the number of total marbles to be k

then use the expression;

5/7*k = 65

7*5/7 * k = 65*7

5k =455

5/5k = 455/5

k = 91

then calculate the number if red marbles from;

x = 2/7*91

x = 26

Therefore there are 26 red marbles.

You might be interested in
-0.6 into a fraction
Akimi4 [234]
The fraction would be - 3/5
5 0
2 years ago
A prince picked a basketful of golden apples in the enchanted orchard. On his way home, he was stopped by a troll who guarded. T
Lelu [443]

Answer:

Let x = total number of apples picked by the prince

x=44

Step-by-step explanation:

1st troll payment

x-(0.5x+2)

x-0.5x-2

0.5x-2 (that is the amount of apples left after 1st troll payment)

2nd troll payment

(0.5x-2)-(0.5(0.5x-2)+2)

Simplifying,

(0.5x-2)-(0.25x-1+2)

(0.5x-2)-(0.25x+1)

0.5x-2-0.25x-1

0.25x-3 (apples remaining after 2nd troll payment)

3rd troll payment

(0.25x-3)-(0.5(0.25x-3)+2)=2

(0.25x-3)-(0.125x-1.5+2)=2

(0.25x-3)-(0.125x+0.5)=2

0.25x-3- 0.125x-0.5=2

0.125x-3.5=2

0.125x =2+3.5

0.125x=5.5

x=5.5/0.125 (divide both sides by 0.125)

=44 apples

Therefore total number of apples picked by the prince, x=44

3 0
3 years ago
Read 2 more answers
Find the slope of the line graphed below
igomit [66]

We are given two points: (-1, -1) and (1, -4). Slope is calculated as the change in y over the change in x, or rise over run.

The change in y is the difference of the two y coordinates (it doesn't matter the order): -1 - (-4) = 3

The change in x is the difference of the two x coordinates (this order depends on the order that you subtracted the y coordinates; they must be the same order): -1 - 1 = -2.

So, the slope is 3/-2

4 0
3 years ago
Read 2 more answers
A box is filled with thirty six plates. How many boxes can be filled with a thousand plates?
Yuki888 [10]
Hello there ^ _ ^


We know that 36 plates filled 1 box
if we have 1000 plates, how many box it would fill.

All we have to do is divide 1000 by 36 to find the answer.

1000/ 36 = 27.77777 or you can just say 28


I hope this help!
4 0
3 years ago
Read 2 more answers
Helppppppppppp plsssssss n ty
Alexus [3.1K]

Answer:

C. \frac{1}{8}

C. \frac{1}{32}

Step-by-step explanation:

A unit fraction is a fraction that has 1 as it's numerator and a positive number as it's denominator.

5 0
2 years ago
Read 2 more answers
Other questions:
  • I need help with this can someone help me plz!
    6·1 answer
  • Please explain: Find the measure of angle A. a. 32 b. 57 c. 59 d. No angle exists.
    14·2 answers
  • In an engineering test, a rocket sled is propelled into a target. The sled’s distance d in meters from the target is given by th
    15·1 answer
  • What’s 6,735,834 in expanded form and word form
    9·1 answer
  • What are the 3 factors of 4,6,9,14,? and 49
    8·1 answer
  • DE=27 FG=19 DG= 82 find the length of EF
    9·1 answer
  • Por favor ayúdeme!!​
    15·1 answer
  • The ratio of red to blue counters
    5·1 answer
  • Select the correct answer. Consider these functions: f(x)=x+1 g(x)=2/x.Which polynomial is equivalent to (f ◦ g)(x)?
    12·1 answer
  • A line segment has a length of 10 units. The line segment undergoes a translation up 5 units and left 5 units from its original
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!