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
labwork [276]
3 years ago
6

To make concrete, the ratio of cement to sand is 1 : 3. If cement and sand are sold in bags of equal mass, how many bags of ceme

nt are required to make concrete using 15 bags of sand?
Mathematics
1 answer:
kotykmax [81]3 years ago
3 0

Answer:

5 bags of cement are required.

Step-by-step explanation:

Since to make concrete, the ratio of cement to sand is 1: 3, if cement and sand are sold in bags of equal mass, to determine how many bags of cement are required to make concrete using 15 bags of sand the following calculation must be done:

Cement = 1

Sand = 3

3 = 15

1 = X

15/3 = X

5 = X

Therefore, 5 bags of cement are required.

You might be interested in
Increase 14187.13 by 4.5%
Ksivusya [100]
If you increase a number by 4.5%, then you're adding 4.5% of that number to 100% of that number. So essentially you just multiply 14187.13 by 104.5%, or 1.045 to find the answer, which is 14,825.55.
7 0
3 years ago
Muiltiply 8x^2(x^2+2xy-6y^2) simplify your answer
stepladder [879]

The answer would be 8x^4 + 16x^3y - 48x^2y^2

In order to find this, multiply 8x^2 by each term individually.

8x^2 * x^2 = 8x^4

8x^2 * 2xy = 16 x^3y

8x^2 * -6y^2 = -48x^2y^2

Now you can put them all in a row.

8x^4 + 16x^3y - 48x^2y^2

3 0
3 years ago
10. Find the value of x in the equation 2(x - 3) + 5x = 5(2x + 6).
RoseWind [281]

Option A

<u>Answer: </u>

The value of x in the equation 2(x - 3) + 5x = 5(2x + 6) is -12

<u>Solution: </u>

From question given that

2(x - 3) + 5x = 5(2x + 6)

Open the brackets,

2x – 6 + 5x = 10x + 30

Rewrite the above equation,

2x + 5x – 6 = 10x + 30

On simplifying the above equation, we get

7x – 6 = 10x + 30

Now adding 6 on both sides,

7x – 6 + 6 =10x + 30 + 6

7x = 10x + 36

On subtracting 10x on both sides,

7x - 10x = 10x + 36 - 10x

-3x = 36

On dividing -3 on both sides,

x = -12

Hence on simplifying 2(x - 3) + 5x = 5(2x + 6) we get value of x is -12. Hence Option (A) is correct.

7 0
3 years ago
Prove that the two circles shown below are similar. ​
Setler [38]

Answer:

The scale factor is \frac{R_{A}}{R_{C}}=\frac{5}{2}

<u>We can say that both circles are similar.</u>

Step-by-step explanation:

If we move the little circle to the center of the bigger circle, so the <u>translate vector will be (3,5).</u>

Now we realize that the bigger circle is just a dilation of the smaller circle, the<u> scale factor is:</u>

R_{A}=5

R_{C}=2

\frac{R_{A}}{R_{C}}=\frac{5}{2}

Therefore, <u>we can say that both circles are similiar.</u>

<u />

I hope it helps you!

8 0
3 years ago
How do you solve 25-24/4-1 pemdas?
lord [1]
The answer is:  18 .
_________________________


25 - 24/4 -1 = 25 - (24/4) - 1 = 25 - 6 - 1 = 19 - 1 = 18 .


The answer is:  18 .
_________________________
5 0
2 years ago
Other questions:
  • How many unique ways are there to arrange the letters in the word HATTER?
    5·2 answers
  • Any help if possible Thank you ❤
    7·2 answers
  • Which factor trees correctly show the prime factors for 40?
    5·1 answer
  • WILL GIVE BRAINLIEST IF UR RIGHT!! PLEASE HELP!!
    6·1 answer
  • A quadratic equation can be written in vertex form or in standard form. Sometimes one form is more beneficial than the other. Id
    10·1 answer
  • Using the FOIL method, find the product of x - 2 and x - 3 .
    13·2 answers
  • Use the image below to answer the following parts.
    14·1 answer
  • On average, it takes Xavier \large 2\frac{1}{6}hours to drive to his Mom's house. After \large 1\frac{3}{4}hours, how many hours
    13·1 answer
  • Evaluate the expression 5x for x = 4.
    11·1 answer
  • A survey showed that 5 out of 6 students own a pet. Based on this result, how many of the 900 students in a school own a pet?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!