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bearhunter [10]
3 years ago
14

What is the unit rate for the ratio 4/7: 8/21?

Mathematics
1 answer:
erik [133]3 years ago
5 0

Answer:

The unit rate is 1.5

Step-by-step explanation:

Given

Ratio = 4/7 : 8/21

Required

Determine the unit rate

To do this, we need to express the ratio as:

Ratio = m : 1

<em>Where m is the unit rate</em>

Ratio = 4/7 : 8/21

Express as fraction

Ratio = \frac{4/7 }{ 8/21}

Solve

Ratio = \frac{4}{7} * \frac{21}{8}

Ratio = 1.5

Express as ratio

Ratio = 1.5 : 1

<em>Hence, the unit rate is 1.5</em>

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Katyanochek1 [597]

The value of x would have to be 90 degrees as it is a right angle.


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3 0
3 years ago
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Rick and Sara have two children, Marcos and Jade. Use the clues to determine their ages. Rick is 4 years younger than Sara. Marc
Morgarella [4.7K]

Step-by-step explanation:

Let age of rick = x

age of sara = y

age of marcos = a

age of jade = b

Rick is 4 years younger than Sara.

x = y - 4

Marcos is 3 years older than Jade.

a = b + 3

Rick's age is twice the age of Marcos and Jade's ages combined.

x = 2(a+b)

The youngest is 9 years old.

The youngest is jade because rick and sara are the parents and marcos is older than she is.

b = 9

How old is each??

a = b + 3

a = 9 + 3 = 12

Marcos is 12 years old

x = 2(a+b)

x = 2 (12 + 9)

x = 2 (21) = 42

Rick is 42 years old

x = y - 4

42 = y - 4

y = 42 + 4 = 46

Sara is 46 years old

8 0
3 years ago
What is the surface area of this 3-D solid?
Dvinal [7]

Answer:

I think its flat sorry if it's wrong

5 0
3 years ago
Solve the equation 1/2(16x – 6) = 2.
Lorico [155]

Answer:

x = 0.625 or 5/8

Step-by-step explanation:

1/2(16x-6) = 2

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Write the name of each angle arm<br> A to O to C
tester [92]

Answer:

∠AOC

Step-by-step explanation:

The statement "A to O to C" is talking about each of the points that form an angle. Each point is given a letter as its name.

The symbol ∠ <u>means angle</u>.

You need two lines to form an angle, and you need two points to form a line. By reusing one of the points, you need three points to form an angle. The point that is being reused is always the point in the middle, in this case, that point is called 'O'.

8 0
3 years ago
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