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makvit [3.9K]
2 years ago
15

Look at the following expression and tile model. White tiles are positive and gray tiles are negative.

Mathematics
1 answer:
Dovator [93]2 years ago
8 0

Answer:

5

Step-by-step explanation:

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Charles earned a total of $180 from working 12 hours. He earned the same amount each hour. Write an equation to describe the rel
olga2289 [7]

Answer:

he earns $15 an hour. the equation is 12h=t

Step-by-step explanation:

you can make the equation 180=12x where x equals the amount per hour

divide 12 by both sides and you get x=15 which means he makes 15 dollars an hour

7 0
3 years ago
describe a real life multiplication situation for which an estimate makes sense. explain why it makes sense.
Paraphin [41]
I want to buy 7 apples and they cost $0.30 a piece how much do I have to spend on apples this makes sense because the person in the problem is not purchasing a large quantity and is not unusual product for people to buy
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3 years ago
The thickness of a U.S. penny is 5.98 X 10-2 inch.
Aleksandr [31]

Answer: 1.495*10^8\ inches

Step-by-step explanation:

For this exercise you have to remember the Product of powers property, which states that:

(a^m)(a^n)=a^{(m+n)}

Let be "x" the height in inches of a stack of 2.5*10^9 pennies.

You know that the thickness of 1 pennie is 5.98*10^{-2}\ inches, then, you can write the following proportion:

\frac{5.98*10^{-2}}{1}=\frac{x}{2.5*10^9}

Solve for "x":

(2.5*10^9)(\frac{5.98*10^{-2}}{1})=x\\\\x=14.95*10^7

To express this height in Scientific notation the decimal point must be after the first digit, so you must move it one place to the left:

x=1.495*10^8

4 0
3 years ago
Clay is flying a helicopter at an altitude of 400 feet in the air. Jason is diving 200 feet below the surface.
aliina [53]

Answer:

They are 600 feet apart from each other.

Step-by-step explanation:

Since Clay is 400 feet away from ground level, which is 0, that sums up to 400. And Jason is -200 below 0, but in this case it is only asking for how much they are apart, so the negative doesn't apply to this. Now all you need to do is 400+200, which gives you the answer of 600 feet.

5 0
3 years ago
If you flip 11 coins, the probability of not getting all 11 tails is
Marta_Voda [28]
The probability of *NOT* getting all 11 tails is 91/100
4 0
2 years ago
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