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3 years ago

When the sum of 24 and 7 is multiplied by the difference of 18 and six what is the product?

1 answer:

8 0

Alright! In order to solve this problem you need to know your keywords:

Sum = To add
Difference = Subtract
Product = To multiply

So! When it asks for the sum of 24 and 7 you add them:

24 + 7 = 31

The difference of 18 and 6:

18 - 6 = 12

The find the product of these two you simply multiply:

12 x 31 = 372!

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Jessie estimated the weight of his cat to be 12 pounds. The actual weight of the cat is 15 pounds.

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3 times 100 divided by 15 gives us 20%

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2 years ago

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Find the midpoint P(16,7) and Q(12, -3) With work.

hichkok12 [17]

Answer:

(14, 2 )

Step-by-step explanation:

Use the midpoint formula

[0.5(x₁ + x₂), 0.5(y₁ + y₂) ]

with (x₁, y₁ ) = (16, 7) and (x₂, y₂ ) = (12, - 3)

midpoint = [0.5(16 + 12), 0.5(7 - 3) ] = [0.5(28), 0.5(4) ] = (14, 2 )

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3 years ago

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Steve is buying apples for the fifth grade. Each bag holds 12 apples.

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Answer:

Step-by-step explanation: you have to divide 75 and 12. So here is the answer: 6.25

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3 years ago

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If a snowball melts so that its surface area decreases at a rate of 9 cm2/min, find the rate (in cm/min) at which the diameter d

zhuklara [117]

Answer:

The diameter decreases at a rate of 0.143cm/min when it is of 10 cm.

Step-by-step explanation:

Surface area of an snowball:

An snowball has spherical format. The surface area of an sphere is given by:

$S = d^2\pi$

In which d is the diameter of the sphere.

In this question:

We need to differentiate S implicitly in function of time. So

$\frac{dS}{dt} = 2d\pi\frac{dd}{dt}$

Surface area decreases at a rate of 9 cm2/min

This means that $\frac{dS}{dt} = -9$

At which the diameter decreases when the diameter is 10 cm?

This is $\frac{dd}{dt}$ when $d = 10$ . So

$\frac{dS}{dt} = 2d\pi\frac{dd}{dt}$

$-9 = 2(10)\pi\frac{dd}{dt}$

$\frac{dd}{dt} = -\frac{9}{20\pi}$

$\frac{dd}{dt} = -0.143$

Area in cm², so diameter in cm.

The diameter decreases at a rate of 0.143cm/min when it is of 10 cm.

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2 years ago

Simplify: −(4)2(3)3 (-6)2(-2)4

charle [14.2K]

It does not matter in which order I multiply. I will simply multiply negatives, then positives.
-(4)2(3)3(-6)2(-2)4
-48(2)(3)(3)(2)(4)
-48(18)(2)(4)
-48(18)(8)
-48(144)
-6,912

6 0

3 years ago