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pishuonlain [190]
3 years ago
15

Please help me with this and fast!

Mathematics
1 answer:
Serjik [45]3 years ago
7 0

Answer:

16

5

O

I think

Step-by-step explanation:

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A woman walks a constant speed of 4.5km per hour. How long will it take her to walk 10 km? Use the formula d=st. write the answe
ryzh [129]

d =st

distance = speed * time

10 = 4.5 * t

divide each side by 4.5

10/4.5 = t

100/45 = t  (can't have a decimal in a fraction so I multiply by 10/10)

divide top and bottom by 5

20/9

2 and 2/9 hours

 to get minutes multiply 2/9 by 60

2/9 * 60

120/9

13 3/9

13 1/3 minutes

2 hours 13 1/3 minutes

to the nearest minutes

2 hours 13 minutes

4 0
3 years ago
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1,848/1,386 As a fraction
Tpy6a [65]
Are you looking to reduce this fraction? if so it would be 4/3. hope this helps!
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3 years ago
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STRUCTURE A quality control inspector at a bolt factory examines random bolts that come off the assembly line. All bolts being m
ELEN [110]

From an absolute value inequality, we have that:

  • The minimum diameter is 6.46 mm.
  • The maximum diameter is 6.54 mm.

  • The absolute value measures the <u>distance of a point or a function to the origin</u>.
  • One example of inequality is:

|f(x)| \leq a

Which has solution:

-a \leq f(x) \leq a

In this problem:

  • Bolts with a diameter of 6.5 mm, with a tolerance of 0.04 mm, thus the <u>absolute value of the difference of the diameter D and 6.5 has to be of at most 0.04</u>, that is:

|D - 6.5| \leq 0.04

Applying the solution:

-0.04 \leq D - 6.5 \leq 0.04

-0.04 \leq D - 6.5

D - 6.5 \geq -0.04

D \geq 6.46

\leq D - 6.5 \leq 0.04

D \leq 6.54

  • The minimum diameter is 6.46 mm.
  • The maximum diameter is 6.54 mm.

A similar problem is given at brainly.com/question/24835634

5 0
3 years ago
A gray whale's heart beats 64 times in 8 minutes. What is the whale's heart rate in beats per minute? 8 heartbeats per minute 56
fgiga [73]

Answer:

8 heart beats per minute

Step-by-step explanation:

64/8

6 0
3 years ago
A scale drawing has a scale of 1 inches = 10 feet. How long is a line on the drawing that represents an actual length of 47.5 fe
Airida [17]

Answer:

4.75 inches

Step-by-step explanation:

To find your answer you divide 47.5 by 10, as that is the scale rate

7 0
3 years ago
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