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3 years ago

Adam is going to make concrete

Mathematics

1 answer:

hodyreva [135]3 years ago

5 0

Answer:

90 kg of stone

Step-by-step explanation:

Adam has 8 x 25 = 200

19 x 22.5 = 427.5

20 x 50 = 1000

He has enough cement and sand

He needs 1090 - 1000 = 90 kg of stone

He needs 2 bags of stone

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While solving an equation, if the variable term becomes zero, and the equation makes a true statement, then the solution is

sergiy2304 [10]

Answer:

the y-intercept

Step-by-step explanation:

For example, the equation is 2x+3=3

2x+3=3

2x=0

x=0

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3 years ago

How do I do this question?

Liula [17]

It's impossible because there are no like terms.

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4 years ago

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An after-school sewing club has 120 yards of fabric to divide equally among the members of the club. When two more students join

maksim [4K]

The number of members before the entry of two new participants was 6, because before they had 20 yards and after their entry each one had 15 yards.

<h3>How to calculate how many members there were?</h3>

To figure out how many members there were, we must try different numbers until we find which number matches the information. In this case, it can be affirmed that there were 6 members, that is to say that each one had 20 yards.

120 ÷ 6 = 20 yards.

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120 ÷ 8 = 15

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2 years ago

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Hello me answer This pls 2x+4y=20

Marrrta [24]

Answer:

x = 8

y = 1

Step-by-step explanation:

First you want to substitute y in for 1 to get

2x + 4 = 20

Then subtract four to both sides to get

2x = 16

Then divide 2 by 16 to get

x = 8

and then plug the 8 into the original equation

2(8) + 4y = 20

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3 years ago

Maya decided to paint some of the rooms in her hotel. She found out that a room required 3/2 cans of paint. If Maya buys 9 cans

Dmitry [639]

Answer:

She can paint <u>6 rooms</u>.

Step-by-step explanation:

Given:

Maya decided to paint some of the rooms in her hotel. She found out that a room required 3/2 cans of paint.

If Maya buys 9 cans of paint.

Now, to find the rooms she can paint.

So, we use unitary method to get the number of rooms:

If, $\frac{3}{2}$ cans of paint is needed to paint 1 room.

Then, 1 can of paint is needed to paint = $\frac{1}{\frac{3}{2}} =\frac{2}{3}$ room.

Thus, 9 cans of paint is needed to paint = $\frac{2}{3} \times 9$

$=\frac{18}{3} \\\\=6\ rooms.$

Therefore, she can paint 6 rooms.

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3 years ago