3 years ago

How do you find rate

Mathematics

1 answer:

alukav5142 [94]3 years ago

5 0

Answer:

We find rate by subraction

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At noon Joyce drove to the lake at 30 miles per hour. but she made the long walk back home at 4 miles per hour. How long did she

mars1129 [50]

Answer:

60 miles

Step-by-step explanation:

let d = distance to the lake

Using: time = distance ÷ speed

Create expressions for the time it takes for each journey:

Drive: $t_1=\dfrac{d}{30}$

Walk: $t_2=\dfrac{d}{4}$

If total time = 17 hours

$\implies t_1+t_2=17$

$\implies \dfrac{d}{30}+\dfrac{d}{4}=17$

$\implies \dfrac{17d}{60}=17$

$\implies 17d=1020$

$\implies d=\dfrac{1020}{17}$

$\implies d=60$

Therefore she walked 60 miles

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1 year ago

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Simplify the expression.

Neporo4naja [7]

Answer:

Step-by-step explanation:

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1 year ago

1.A clown made 3 times as many balloon hats as balloon dogs. He made 4 more balloon dogs than balloon swords.Write an algebraic

Dima020 [189]

Let x=balloon swords
let x+4=balloon dogs (four more than x is x+4)
let x+7=balloon hats (three more than x+4 is x+7)
the answer is x+7

I don't know how to correctly explain the second answer (although I do know that it is 1)

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2 years ago

Please help !! I would really appreciate it. brainliest will be given for best answer

faltersainse [42]

Since A is (-7,-4) and C is (7,3) for the x value from a to c is 14 for the y value from a to c is 7

Do 14 x 2/7 which is 4

Do 7 x 2/7 which is 2

then add (-7+4,-4+2) which is (-3,-2)

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3 years ago

What is -3,2 and 8,2 in slope intercept form

snow_tiger [21]

Answer:

y=0x-∞

Step-by-step explanation:

2-2=0

8-(-3)=11

slope= no slope

no slope is a line that goes straight up

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3 years ago