A student solved this problem and said the answer was 2 1 1/2 miles. Colin rides his bike 10 1/2 miles every morning and 12 1/4 miles every afternoon. On Monday, he rode his usual distance in the morning, but in the afternoon he rode 1 1/2 fewer miles. How many miles did Colin ride on Monday?

Is the student's answer reasonable?

A.
Yes, the answer is reasonable.

B.
No, the answer is not reasonable. It should be about 10 miles.

C.
No, the answer is not reasonable. It should be about 15 miles.

D.
No, the answer is not reasonable. It should be about 25 miles.

Answers

Answer 1

Answer: so do (21/2+49/4)-3/2=You get 21 1/4 miles
Since 21 1/4 is close to 21 1/2, this answer is reasonable. So A is the answer

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A constant of proportionality can also be considered a(n) unit rate. y-value. x-value. ratio.

Answers

Answer:

A. Unit rate.

Step-by-step explanation:

We have been given a statement and we are supposed to choose the correct option for our given statement.

Statement:

A constant of proportionality can also be considered a(n) .

Since we know that constant of proportionality represents the amount by which two proportional quantities vary.

Two quantities are directly proportional, when they are in form $y=kx$ , where k represents the constant of proportionality.

We can represent this proportion also as: $k=(y)/(x)$

Since k represents the quotient of y and x, so the value of k represents the unit rate for two quantities y and x, therefore, a constant of proportionality can also be considered an unit rate.

Answer:

unit rate

Step-by-step

Much love <3

Colby and Jaquan are growing bacteria in an experiment in a laboratory. Colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. Jaquan has a different type of bacteria that doubles every 3 hours. How many bacteria should Jaquan start with so that they have the same amount at the end of the day?BTW I dont want bacteria formula

Answers

I assume here that the day here is the 24 period. This means that if the bacteria doubles every 2 hours, this will happen 12 times (24/2=12).

So Colby will have 50*2*2*2*2*2*2*2*2*2*2*2*2=50*4*4*4*4*4*4=200*4*4*4*4*4=800*4*4*4*4=3200*4*4*4=204800 bacteria.

if the bacteria doubles every 3 hours, this will happen 8 times (24/3=8).

So Jaquan will have

x*2*2*2*2*2*2*2*2=x*4*4*4*4=x*16*16=x* 256

So if we want so have the same amount:

204800=x*256
x=800

So he needs to start with 800.

20 is decreased to 11

Answers

20 minus 9 is decreased to 11

I hope this helps

What is the median of the data? 12, 17, 16, 10, 20, 13, 14, 14, 12, 12, 19, 18 A. 15 B. 17 C. 14 D. 16

Answers

all you need to do is put them in order least to great and find center number
if theres two then you just add both of them up and divide by 2
and the median is 14

the answer is 14 good luck

What is the value of y?

6(5 + 3) = 6 • 5 + 6 • y

Answers

$6(5+3)=6\cdot5+6\cdot y\n\n6(8)=30+6y\n\n48=30+6y\ \ \ \ |subtract\ 30\ from\ both\ sides\n\n18=6y\ \ \ \ |divide\ both\ sides\ by\ 6\n\n3=y\n\n\huge\boxed{y=3}$

6(5+3)=(6)(5)+6y

Simplify

6(5+3)=(6)(5)+6y

48=30+6y

48=6y+30

Flip the equation.

6y+30=48

Subtract 30 from both sides.

6y+30−30=48−30

6y=18

Divide both sides by 6.

6y / 6 = 18/ 6

y=3

Please answer my question I give thanks

Answers

N is a variable
1. N+4
2. dk
3. N*5
4. N-7
5. N^2 (N squared) +1
6. 3-N^2
7. N^2÷6=42
8. 2×N+5=20
9. 4×N-7=32
10. dk
11. 10+N÷2=-15
12. dk
some of them might not be correct, i did my best. i am sorry.

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