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Vitek1552 [10]
2 years ago
14

Mrs. Hamilton tallies her students test grades in the table below. What percent of the class received an A or a B?

Mathematics
2 answers:
sertanlavr [38]2 years ago
7 0

Answer:

J. 40%

Step-by-step explanation:

12 students received an A or B. There are 30 students.

12/30=0.40

=40%

Anuta_ua [19.1K]2 years ago
3 0

Answer:

The correct answer would be 30%

Hope this helps!

Mark me brainliest if I'm right :)

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A biker rode 45 miles in 180 minutes. At what speed (in miles per hour) was the biker travelling? A. 4 B. 17 C. 9 D. 12
Anastasy [175]

Answer:

v = 15 miles / hour

Step-by-step explanation:

Given:

Distance covered by biker = s=45 miles

time taken by him = t=180 minutes

TO Find:

speed in miles per hour = v = ?

Solution:

As it is given that the distance covered is 45 miles

and time taken by him is 180 minutes

as one hour have 60 minutes

so time taken by rider = t = 180 /60

                                          = 3 hours

this step is done because we have to find speed in miles per hour

Now

The formula for finding the distance is

distance = speed * time

or

s = v * t

we have to find v

so dividing both sides by t

\frac{s}{t} = \frac{v*t}{t}

it becomes

v = \frac{s}{t}

Putting the values

v = \frac{45}{3}

solving it gives

v = 15 miles / hour

which is the required speed

in the given options it is not available


5 0
3 years ago
Pls answer the question in the picture.
mr_godi [17]

Answer:

5:2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Add the numbers from 1 to 100 by following the same steps you used in 1.
oksano4ka [1.4K]
Summaation of a sequence

or see a smaller scale
from 1 to 10
notice
1+10=11
2+9=11
etc
5+6=11
10/2=5
there are 5 pairs
5*11=55

so

1 to 100
1+100=101
2+99=101
...
50+51=101

100/2=50
there ar 50 pairs
50 times 101=5050

the sum is 5050
3 0
3 years ago
Three segments of lengths 25 cm, 37 cm, and 62 cm will form a triangle.
Llana [10]
Ok....
What am I supposed to answer here???
6 0
3 years ago
Please explain.
DENIUS [597]
If you want to solve this i suggest rather dividing or multiplying.
4 0
3 years ago
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