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
sdas [7]
3 years ago
12

Red and grey bricks were used to build a decorative wall. The number of red bricks/number of grey bricks was 5/2 There were 140

bricks used in all. How many red bricks were used?
Mathematics
1 answer:
ehidna [41]3 years ago
5 0

5/2 = 5:2

Lets take 5:2 as 5x and 2x.

5x + 2x = 140

7x = 140

x = 140/7

x = 20

So, 5x = 5x20 = 100 red bricks

and, 2x = 2x20 = 40 grey bricks.

100 + 40 = 140 bricks

So, to build the decorative wall, 100 red bricks and 40 grey bricks were used.

You might be interested in
NEED HELP!!!!!!!!!!!!!
Nataliya [291]
<span>The ratio of the corresponding side lengths of similar triangles is called the <u>scale </u>factor.
This means that </span><span> all the sides of the small figure are multiplied by the same number to obtain the lengths of the corresponding sides of the large figure.</span>
5 0
3 years ago
Sam ran at 6km/h for two hours 20 minutes what distance did he run?
horrorfan [7]
He ran 14 km, multiply 6 by 2 and 1/3.
7 0
3 years ago
Invested 28, 000 in two accounts, one yielding 8% and the other at 9%. If i receive a total of 2,440 in intrest at the end of th
dalvyx [7]

Answer:

8,000 in the 8% account

20,000 in the 9% account.

Step-by-step explanation:

x + y = 28000

0.08 x + 0.09 y = 2440

0.08 x + 0.09 (28000 − x) = 2440

0.08 x + 2520 − 0.09 x = 2440

80 = 0.01 x

x = 8000

y = 20000

8 0
3 years ago
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!
xxMikexx [17]

Answer:

the equation: 2x+3+2x+3+2x= 36

x=5

the length of the congruent sides

15

the length of the third side

10

Step-by-step explanation:

i'll add this later hold on

4 0
3 years ago
The information below shows how many text messages two sisters send each week. Emilia's information is on the ratio table and Mi
andrew-mc [135]
Hello! Can I see the graph?
3 0
2 years ago
Read 2 more answers
Other questions:
  • A computer downloads files at a constant rate. The table shows how many megabytes the computer downloads over specific lengths o
    13·1 answer
  • How do to soving problems in math what is a trick​
    11·2 answers
  • How many 100 dollar bills make 2324 dollars
    5·1 answer
  • Find the slope of the line
    11·1 answer
  • What is the opposite operation of squaring a number?
    15·1 answer
  • Translate this sentence in Spanish<br> My mother loves to read to me.
    6·1 answer
  • Find the equation of the linear function represented by the table below in slope-
    9·1 answer
  • The difference between six times a<br> number and one is seventeen
    14·1 answer
  • Find the equation of a line with the given points. 7, 3 , 5, -1
    9·1 answer
  • If △NMO ∼ △XYZ, and the area of △NMO is 147 square feet, find the area of △XYZ
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!