3 years ago

What does r equal in 4r+5=3r

Mathematics

1 answer:

vekshin13 years ago

5 0

4r+5=3r can also be written
4r=3r-5
1r=-5

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Robert and Chris can skate 4 miles in 18 minutes. How far can they ride in 45 minutes?

adell [148]

Answer: Robert and Chris can skate 10 miles in 45 minutes.

Step-by-step explanation:

Let's start by finding the unit rate.

$\frac{4}{18} =\frac{2}{9} \\\frac{18}{18} =1$

Robert and Chris can skate $\frac{2}{9}$ of a mile in 1 minute. Now we can multiply both by 45 to see how far the can go in 45 minutes.

$(\frac{2}{9}) (\frac{45}{1} )\\\frac{(2)(45)}{(9)(1)} \\\frac{90}{9} \\10$

45x1=45

The can skate 10 miles in 45 minutes.

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3 years ago

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3 years ago

Is 7/20 and 0.07 equivalent numbers

IceJOKER [234]

$\frac{7}{20}=0.35 \\ 
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3 years ago

Read 2 more answers

What kind of line is y=3? horizontal, vertical,slanted?

Firdavs [7]

As there is no x axis it will have to be vertical as the y axis is already vertical

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3 years ago

Y=2x-7<br> y=-3x+18 <br> solve by substitution

Liono4ka [1.6K]

Answer:

-x+11

Step-by-step explanation:

am not sure if this is correct but

2x-3x=-x

-7+18=11

-x+11

8 0

2 years ago