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Veronika [31]
3 years ago
15

I need help .........

Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

Step-by-step explanation:

Lets break each problem down before we answer it so it help to understand what we are looking for.

Vocabulary:

  Unit Rate: how many units of the first type of quantity corresponds to one unit of the second type of quantity. (12 inches to 1 foot)

Unit Rates:

Problem 1: Top left

A boy delivers 189 papers in 3 hours

\frac{189 papers}{3 hours} \\189/3\\\frac{63 papers}{1 hour}

Unit Rate: 63 papers delivered per hour

In simple terms, all we are doing is creating a fraction then simplifying it :)

Problem 2: Top right

It costs $8.40 for 12 cupcakes

\frac{8.40}{12 cupcakes} \\8.40/12\\\frac{0.70}{1 cupcake}

Unit Rate: For every $0.70, it costs one cupcake

Problem 3: Bottom left

5 miles in 50 minutes

\frac{5 miles}{50 minutes} \\5/50\\\frac{1 mile}{10 minutes}

Unit Rate: For every one mile ran, it takes 10 minutes

Problem 4: Bottom right

375 passengers distributed between 5 cars

\frac{375 passengers}{5 cars} \\375/5\\\frac{75 passengers}{1 car}

Unit Rate: For ever 75 passengers, there is one car

Hope this Helps!

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12/1

Step-by-step explanation:

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3 years ago
Which of the following represents eighth root of x cubed in exponential form?
levacccp [35]
<span>"cubed root of x squared" is "(cubed root of x) squared" = "cubed root of (x squared)" 
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So the exponent or power os 2/3.</span>
5 0
3 years ago
Read 2 more answers
C equals 2 pi r​; Cequals62.8 ​(Circumference of a​ circle)
tatuchka [14]

Answer:

about 10

Step-by-step explanation:

62.8 = 2 pi r/2

62.8/2 = pi r

31.4/pi = pi r/pi

about 10 = r

3 0
3 years ago
Which figure has at least one line of symmetry?
CaHeK987 [17]

Answer:

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6 0
3 years ago
Mia found the area of a polygon The area is 32 square cm.
solniwko [45]

Answer:

Only the isosceles trapezoid has an area of 32 cm².

Step-by-step explanation:

Let's calculate the area of each polygon.

For the two triangles we have:

A_{t} = \frac{bh}{2} = \frac{2 cm*4 cm}{2} = 4 cm^{2}

This polygon does not have an area of 32 cm².

For the rectangle we have:

A_{r} = bh = 6 cm*4 cm = 24 cm^{2}

This polygon does not have an area of 32 cm².

For the rectangle trapezoid we have:

A_{rt} = A_{t} + A_{r} = (4 + 24) cm^{2} = 28 cm^{2}

So, this polygon does not have an area of 32 cm².

Finally, for the isosceles trapezoid:

A_{it} = A_{t}*2 + A_{r} = (4*2 + 24) cm^{2} = 32 cm^{2}

This polygon does have an area of 32 cm².

   

Therefore, only the isosceles trapezoid has an area of 32 cm².

I hope it helps you!                              

8 0
3 years ago
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