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Scilla [17]
3 years ago
14

A washer and dryer cost 1003 combined the washer cost 53 more than dryer what’s the cost of dryer

Mathematics
1 answer:
NeX [460]3 years ago
4 0

Answer:

475

Step-by-step explanation:

Let's call the dryer price is x

Then, the price for the washer is 53 more than the dryer, it would be: x+53

Total price of washer and dryer = 1003

We get the equation:

x+(x+53) = 1003

2x + 53 = 1003

2x + 53 - 53 = 1003 - 53

2x = 950

x = 475

The dryer price is 475

Extra: you can find the cost of the washer by using x+53 = 475+53 = 528

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23.40 divided by 7.8 = 3
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Please help me on this problem!
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Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 3 cubic feet
gtnhenbr [62]

Answer:

Therefore the height of the water in the pool changes at the rate of \frac{1}{3\pi} feet per minute.

Step-by-step explanation:

Given that  the shape of swimming pool is right circular cylinder.

The  rate of water pouring in the pool = 3 cubic feet per minute.

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\frac{dv}{dt}=3 cubic feet per minute.

When the volume of the swimming pool changed it means the height of the water level of the pool change and the radius of the swimming pool remains constant.

Let the height of the pool be h.

The volume of the pool is = \pi 3^2 h  cubic feet

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Therefore,

v =9\pi h

Differentiating with respect to t

\frac{dv}{dt}= 9\pi \frac{dh}{dt}

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3=9\pi \frac{dh}{dt}

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The change of height of the pool does not depend on the depth of the pool.

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6 0
2 years ago
If two bags of apples weight 8 pounds how many pounds do 5 bags weigh
svetlana [45]
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3 years ago
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Shalnov [3]

Answer:

1. (5 \times 10^3) \times (9 \times 10^7)  = 45 \times 10^{10}\\2. (7 \times 10^5) \div (2 \times 10^2)  = 3.5 \times 10^3

Step-by-step explanation:

Here, the given expressions are:

1. (5 \times 10^3) \times (9 \times 10^7)\\2. (7 \times 10^5) \div (2 \times 10^2)

Now, the LAWS OF EXPONENTS state that:

1. a^ m \times a^n = a^{(m+n)}\\ 2. a^m \div a^n = a ^{(m-n)}

Using above laws, we get:

1. (5 \times 10^3) \times (9 \times 10^7)\\= (5  \times 9 ) \times ( 10^7\times 10^3)\\= 45 \times (10^{(7+3)})  = 45 \times 10^{10}\\\implies (5 \times 10^3) \times (9 \times 10^7)  = 45 \times 10^{10}

2. (7 \times 10^5) \div (2 \times 10^2)\\= \frac{(7 \times 10^5)}{(2 \times 10^2)}  = \frac{7}{2}  \times\frac{10^5}{10^2}   \\ =3.5 \times 10^{(5-2)}  = 3.5 \times 10^3\\\implies(7 \times 10^5) \div (2 \times 10^2)  = 3.5 \times 10^3

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3 years ago
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