3 years ago

Story context that would be represented by the ratio 1:4

Mathematics

1 answer:

Doss [256]3 years ago

5 0

In a class of 24 kids, for every 1 boy there are 4 girls

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The radius of a semicircle is 3 centimeters. What is the semicircle's diameter?

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Answer:

6 cm

Step-by-step explanation:

The diameter is 2x the radius

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Explain how these three graphs are related:

givi [52]

They both have 2 inches

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what equation represents the road that passes through the point shown and is perpendicular to the road represented by the red li

omeli [17]

Answer: The equation that represents the road is y= - 1/3x +1/3

Step-by-step explanation:

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3 years ago

Rosita can wax her car in 2 hours or 120 minutes. When she works together with Helga, they can wax the car in 45 minutes. How lo

Mashcka [7]

<h2>Time taken by Helga to wax the car is 72 minutes</h2>

Step-by-step explanation:

Let w be the work of waxing.

Rosita can wax her car in 2 hours or 120 minutes.

Time taken by Rosita = 120 minutes

$\texttt{Rate of Rosita = }\frac{W}{120}$

Let time taken by Helga be t,

$\texttt{Rate of Helga = }\frac{W}{t}$

When she works together with Helga, they can wax the car in 45 minutes.

We have

$\frac{W}{\frac{W}{120}+\frac{W}{t}}=45\\\\120t=45(120+t)\\\\120t=5400+45t\\\\t=72minutes$

Time taken by Helga to wax the car is 72 minutes

6 0

3 years ago

Find the product.

dlinn [17]

The correct answer of the given expression above would be the last option. We just solved this using the distributive property.
So: <span>(a - 3)(a - 5)
a^2 -3a -5a + 15
a^2 -8a + 15
Hope this is the answer that you are looking for. Have a great day!</span>

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3 years ago