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Semmy [17]
3 years ago
11

Please help if I get it wrong I cant go back (all I need is an answer)

Mathematics
2 answers:
sladkih [1.3K]3 years ago
7 0

Answer:

Subtract 9 I agree with the 1st question but can you help me back just comment if you wanna

Firlakuza [10]3 years ago
3 0
-9 because you subtract that and get -9
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In the​ morning, Maria drove to a business appointment at 30 mph. Her average speed on the return trip in the afternoon was 20 m
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Step-by-step explanation:

Distance = Speed * Time

If Maria drove to a business appointment at 30 mph, then

d = 30t where d is her distance and t is the time

If her average speed on the return trip in the afternoon was 20 mph and the return trip took 1/2 hr longer, then;

her speed s = 20mph

her time t1 = 1/2 + t

distance d = 20(1/2+t)

Since the distance both going and returnin are the same then:

30t = 20(1/2 + t)

3/2 t = 1/2 + t

3/2 t - t = 1/2

1/2 t = 1/2

t = 1 hr

Substitute t = 1hr into the first equation to get the distance

d = 30t

d = 30(1)

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Hence she travelled 30 miles to the appointment

4 0
3 years ago
What is the slope of the graph of<br> y = -3x + 2?
Ne4ueva [31]

Answer: -3

Step-by-step explanation:

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3 years ago
A carpenter is building a staircase from the first floor to the second floor of a house. The distance between floors is 3.3m. Ea
spin [16.1K]
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So there you go. 15 steps.

4 0
3 years ago
It's 9:10PM, I can't do math anymore :')
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Answer:

35.518

Step-by-step explanation:

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