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Sedbober [7]
3 years ago
15

4m - 9= 31 I can’t remember how to work this out. Can someone help?

Mathematics
2 answers:
Schach [20]3 years ago
8 0

Answer:

4m - 9 = 31   4m= 40 because m=10 10 times 4 = 40

Step-by-step explanation:

lianna [129]3 years ago
5 0

Answer:

10

Step-by-step explanation:

4m=40

m=10

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Mara's family is driving to her grandmothers' house. The family travels 239.4 miles between the hours of 9:10 a.M. To 1:40 p.M.
anzhelika [568]

Answer:

53.2 mph

Step-by-step explanation:

Mara's family travels 239.4 miles between the hours of 9:10 a.m. to 1:40 p.m.

1:40 p.m. is 13:40.

Thus, they traveled for

13 hours 40 minutes - 9 hours 10 minutes = 4 hours 30 minutes

that is 4\frac{1}{2}=4.5 hours.

Use formula:

D=r\cdot t,

where

D = distance

r = rate

t = time.

In your case,

D = 239.4 miles

t = 4.5 hours

Hence,

239.4=4.5r\\ \\r=\dfrac{239.4}{4.5}=53.2\ mph

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3 years ago
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45 minutes to 1 hour ratio
Mariana [72]
h-hour(s)\\min-minute(s)\\\\1h=60min\to45min=\dfrac{45}{60}h=\dfrac{45:15}{60:15}h=\dfrac{3}{4}h\\\\45min\ to\ 1h=\dfrac{3}{4}h:1h=\huge\boxed{3:4}
7 0
4 years ago
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2.5/6 = h/9 h=? What does this mean
omeli [17]

Answer:

h = 3.75

Step-by-step explanation:

Step 1: Write equation

2.5/6 = h/9

Step 2: Solve for <em>h</em>

  1. Cross multiply: 22.5 = 6h
  2. Divide both sides by 6: 3.75 = h
  3. Rewrite: h = 3.75

Step 3: Check

<em>Plug in h to verify it's a solution.</em>

2.5/6 = 3.75/9

0.416667 = 0.416667

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3 years ago
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Answer:

y = -1/4x + -6

Step-by-step explanation:

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3 years ago
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tankabanditka [31]

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