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snow_tiger [21]
2 years ago
9

Kevin used to run a mile in 9.4

Mathematics
1 answer:
ElenaW [278]2 years ago
3 0

Answer:

12.77%

Step-by-step explanation:

if a 100% is 9.4

then do

8.2/9.4

which is

0.87234042553

which is

87.23%

then do

100% - 87.23%

which is

12.77%

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A road is 450 metres long . It takes a woman 5 minutes to walk along the road . Work out the average speed of the woman . Give y
Masja [62]
Theres 60 seconds in a minute. If it takes her 5 minutes, multiply 60 by 5. you will get 300. then all you will do is divide the meters by 300 seconds. you will get the answer of 1.5 metres per second.
6 0
2 years ago
Two roller coasters are vying for the title of the steepest drop the first ride has a hill that drops 140 feet in a 40 foot run
muminat

Answer:

They have the same slope

Step-by-step explanation:

Given

Coaster 1:

Drops = 140ft

Run = 40ft

Coaster 2:

Drops = 105ft

Run = 30ft

First, we calculate the slope (m) of both coasters

m = \frac{Rise}{Run}

m = \frac{Drops}{Run}

For coaster 1:

m = \frac{140ft}{40ft}

m = \frac{140}{40}

m = 3.5

For coaster 1:

m = \frac{105ft}{30ft}

m = \frac{105}{30}

m = 3.5

<em></em>m = m=>3.5 = 3.5<em></em>

<em>By comparison, they have the same slope</em>

8 0
3 years ago
Solve for (c).<br><br> 12c−4=14c−10<br> c= ?
kozerog [31]

Answer:

c=3

Step-by-step explanation:

do u need the explanation?

7 0
3 years ago
Read 2 more answers
Can anyone explain how to solve this using %/100 = is/of?
kumpel [21]

Answer:

20%/100 = 8 peeps / 40 items in the basket

(40 total items)

Step-by-step explanation:

Let x be the total number of items in the basket. The ratio of peeps to the total item is 1/5. Therefore,

1/5 = 8/x

x = 40

40 total items

6 0
3 years ago
The mean number of words per minute (wpm) read by sixth graders is 89 with a variance of 625. if 96 sixth graders are randomly s
Luba_88 [7]
The z-score of the information given is:
z=(x-μ)/σ
where
μ-mean
σ- standard deviation

from the information given:
x=93.02
μ=89
σ=√625=25
hence
z=(93.02-89)/25
z=0.1608
thus
P(X≥x)=1-0.5636=0.4364=43.64%
6 0
3 years ago
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