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3 years ago

Solve using the guess-and-check strategy.

Mathematics

2 answers:

Nadya [2.5K]3 years ago

7 0

The answer is 12. Matthew would be 12 & Elizabeth would be 7. 12+7=19. So C is your answer.

Ksivusya [100]3 years ago

4 0

The simplest way to do this would be to first subtract 5 from the total, because Matthew is going to be five years older than her.

19 - 5 = 14

14 will divide evenly by 2, making them each 7, but since Matthew is 5 years older, and 5 back to 7 to get his age.

7 + 5 = 12.

Matthew is 12 and Elizabeth is 7. Check your work.

12 + 7 = 19

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frosja888 [35]

Answer:

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Step-by-step explanation:

We know how much the 18-mile trip is for sale, so to know how much 1-mile sale we just have to divide the total amount by the amount of miles

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1 mile =

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3 years ago

A cube whose edge is 20 cm 1 point

Sav [38]

Answer:

Unpainted surface area = 514.28 cm²

Step-by-step explanation:

Given:

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Radius of circle = 20 / 2 = 10 Cm

Find:

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Computation:

Unpainted surface area = Surface area of cube - 6(Area of circle)

Unpainted surface area = 6a² - 6[πr²]

Unpainted surface area = 6[a² - πr²]

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4 years ago

How do I find the value of “y” in this equation 3/2y + 3/2

navik [9.2K]

Answer:

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Step-by-step explanation:

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3 years ago

Joshua's goal is to sell more than 20 items at a farmers' market. So far, he has sold 6 items. Each of his customers buys 2 item

Nookie1986 [14]

The answer is B 20-6=14/2=7

5 0

3 years ago

Read 2 more answers

What is the length of the line segment with end points (5, -7) and (5, 11)

Law Incorporation [45]

Answer:

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have the points (5, -7) and (5, 11). Substitute:

$d=\sqrt{(5-5)^2+(11-(-7))^2}=\sqrt{0^2+18^2}=\sqrt{18^2}=18$

4 0

3 years ago