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DedPeter [7]
3 years ago
7

When you solve an equation, you must

Mathematics
1 answer:
MAXImum [283]3 years ago
3 0

Answer:

x is equal to 6

Step-by-step explanation:

4x=24

divide both sides by 4

4 eliminates 4 leaving x behind

4 divides 24 making x =6

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A car travelled a distance of 50km in an hour. What distance did it travel in 30minutes?
solniwko [45]
The answer is 70 miles per hour
6 0
3 years ago
steve reads 20 pages of his graphic novel per hour . if the book has 200 pages and he reads for d hours , which expression shows
PolarNik [594]
The answer would be D. 200 - 20d.

This is because the question asks for pages left after reading for "d" (however many) hours. Since the book has 200 books, you'd subtract from that number since it's the "starting number" of pages. If he reads 20 pages per hour, you would multiply those together to get how many he has read, then subtract that number from 200, to get the amount of pages left.

I hope this helps!
7 0
3 years ago
the NACI cafeteria wants to sell two 25 cm diameter medium size pizzas for the same price as one large pizza. what should the di
Alex777 [14]

Answer:

35.34 centimeters

Step-by-step explanation:

The amount of pizza is same as the area. The pizza is in a shape of a circle. The area of a circle is:

A=\pi r^2

Where

r is the radius (half of diameter)

Area of one medium size pizza is (diameter 25 means radius is 25/2 = 12.5):

A=\pi r^2\\A=\pi (12.5)^2\\A=490.87

So, area of two of these medium size pizzas is:

490.87 * 2 = 981.74

This should be the area of the large pizza. We can find the radius of that by substituting into formula. Shown below:

A=\pi r^2\\981.75=\pi r^2\\r=\sqrt{\frac{981.74}{\pi}} \\r=17.67

Hence, the diameter would be around:

17.67 * 2 = 35.34 centimeters

5 0
3 years ago
Hannah and Dawson have both invested money in savings accounts with APYs of 3.2%. If Hannah's account has a balance of $31,000 a
9966 [12]

Answer:

$341.07

Step-by-step explanation:

Hanna and Dawson both invested at 3.2% = 0.032

Hannah has balance of 31,000 in account

Dawson has balance of 42000 in account

Interests earned by both are

1)Hannah -P(1+i)^-n

=31000(1+0.032)^-1

=31000(1.032)^-1

=31000(0.968992)

=$30038.752

=$30038.75

Interest earned by Dawson is $31,000 - $30038.75 = $961.25

2)Dawson-  P(1+i)^-n

=42000(1+0.032)^-1

=42000(1.032)^-1

=42000(0.968992)

=$40697.664

=$$40697.664

Interest earned by Dawson is $42,000 - $40697.66= $1302.32

3) Hence the amount that Dawson earns than is:

=$1302.32-$961.25

= $341.07

3 0
3 years ago
Evaluate the expression for the given value of the variable |-4b-8|+|-1-b^3|+2b^3;b=-2
Serga [27]
[-4(-2)-8]+[-1-(-2)^3]+2(-2)^3

(8-8)+(-1+8)-64

7-64

57
6 0
3 years ago
Read 2 more answers
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