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Dmitriy789 [7]
2 years ago
9

A pile of sand has a weight of 90kg.

Mathematics
1 answer:
Elodia [21]2 years ago
4 0

Answer:

52.5 kg ANS

Step-by-step explanation:

Weight of a pile of sand = 90kg

Ratio of weight of sand in three bags = 2:3:7

Let the weight be 2x kg, 3x kg, 7x kg respectively A.T.Q.

= 2x + 3x +7x = 90

= 12x = 90

= X= 90/12

= X = 7.5 kg

Weight of sand in medium bag =

= 3 × 7.5

= 52.5 kg ANS

I hope this answer is correct

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Answer:

answer is -1 according to calculation

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3 years ago
Which of the following are coefficient
malfutka [58]

Answer:

2 and -3

Step-by-step explanation:

because a coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g. 4 in 4x).

so in 2x-3y+5, 2 and -3 are the coefficients.

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3 years ago
The bowling lanes charge an hourly fee for bowling and $2 to rent shoes for the day. Gerry rented shoes and bowled for 2 hours a
kodGreya [7K]

Answer:

d) f(x) = 5x + 2

Step-by-step explanation:

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Now, we need to solve for the hourly cost, so to do this we plug in all the known information to get 12 = m(2) + 2

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6 0
3 years ago
The table shows the depth of a submarine over a 2 hour period. Did the sub go up or down?By how much?
hichkok12 [17]
If the sub is closer to the surface later, we thus know that it traveled upwards.

4 0
2 years ago
Read 2 more answers
Two airplanes leave an airport at the same time, flying in the same direction. One plane is flying at twice the speed of the oth
Vsevolod [243]

Answer:

The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.

Step-by-step explanation:

Two planes:

The first one's speed is x

The second is y.

One plane is flying at twice the speed of the other.

I will say that y = 2x.

Two airplanes leave an airport at the same time, flying in the same direction

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Means that after 1 hour, they will be x miles apart.

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After 1 hour, x km apart. After 4, 1800. So

1 hour - x km apart

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4x = 1800

x = 1800/4

x = 450

2x = 2*450 = 900

The slower plane has a speed of 450 km/h and the faster one has a speed of 900 km/h.

7 0
2 years ago
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