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
EleoNora [17]
2 years ago
7

Bob the builder is making 480 kg of concrete mix

Mathematics
2 answers:
Marina CMI [18]2 years ago
6 0

Answer:

180 kg

Step-by-step explanation:

The ratio is

cement : sand : gravel

    1       :    3     :    4

If he used 1 kg cement, 3 kg sand, and 4 kg gravel, he'd get 8 kg of concrete.

He wants to make 480 kg of concrete.

480/8 = 60

He needs 60 times more concrete than the numbers in the ratio.

60 * 3 kg = 180 kg

Answer: 180 kg

svetoff [14.1K]2 years ago
4 0

Answer:

If sand is 3 in the ratio, it is 180kg

Step-by-step explanation:

480/8=60  60 times 3 is 180

You might be interested in
HELP ASAP WILL GIVE BRAINLIESET A regulation basketball has a diameter of 9.4 inches. What is the volume of the ball? A) 19.69 i
Arlecino [84]
The shape of a basket ball is like sphere so use the formula of sphere vol.= 4/3*pie*r3 find the radius by r=D/2
5 0
3 years ago
What Force would be needed to extend a spring with a spring constant k=7 N/m that extends<br>0.3m?​
vladimir2022 [97]

Answer:

Force  =  - 2.1 Newton

Step-by-step explanation:

According to question ,

The value of Spring constant , K = 7  N/m   Newton per meter

And the spring is extended up to 0.3 meter

The Force experience on the spring is calculated from the Hook's Law

<u>The principal state that , the force applied on spring to extend or compress the spring to some distance is proportion to that distance. </u>

Let the force be F

So, F =  - K X

where K is spring constant and X is its displacement

Negative sign shows displacement of spring once it is stretched

And K is spring constant

So ,Force = ( - ) 7 × 0.3

I.e Force  =  - 2.1 Newton       Answer

4 0
3 years ago
In a particular class of 28 students,8 students are men what fractions of the students is female in the class
WITCHER [35]
20/28 are female. Since there are 8 male students you just have to subtract 28-8 and you'll get the female total.
8 0
3 years ago
Read 2 more answers
Four friends equally share three candy bars. Which fraction represents how much each friends receives?
elixir [45]
Each friend would receive 3/4
8 0
3 years ago
ra\\For spirit week at a local high school, students were encouraged to wear their school colors of green and white. 1,200 stude
s344n2d4d5 [400]

Answer:

<em>20%</em>

Step-by-step explanation:

<em>First, add 1,200, and 300. That gives you 1,500. You want to find how much percent of 1,500 equals 300, and that is 20%.</em>

4 0
2 years ago
Read 2 more answers
Other questions:
  • Rosamaria is setting up a 20 gallon saltwater fish tank that needs to have a salt content of 3.5%. If rosamaria has water that h
    10·1 answer
  • What is 2.8 as a fraction in simplest form
    9·2 answers
  • A pair of jeans was in a 15% off sale but, when Bill came to buy them a month later, the sale was over and he had to pay the reg
    8·2 answers
  • Sarah is selling cookies and brownies to raise money for her school trip. She needs to raise at least $350. She is selling cooki
    14·2 answers
  • Which expression is equivalent? 8(3x − 6) A) 24x + 48 B) 24x − 48 C) −24x + 48 D) −24x − 48
    13·2 answers
  • Help me answer this or ima get a butt whoping <br> solve for y <br> 64−(3y+8y+y)÷40=37
    5·2 answers
  • What is the product?
    11·2 answers
  • Factor the expression below.<br> 4x2 - 1
    13·1 answer
  • Can you Help me place
    5·2 answers
  • Yal my someone please help me with this, its teh last thing i have to do<br> tysm
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!