All categories

2 years ago

FORST WILL BE MARKED THE BRAINLIEST

Mathematics

2 answers:

Alex17521 [72]2 years ago

7 0

Answer:

4.5miles

Step-by-step explanation:

Well, he runs 3miles in 28 minutes. Also see that 42=28·1.5.

So his journey would just be running 1.5 times, with each time running 28 minutes. So, he runs a total of 1.5·3 =4.5 miles

beks73 [17]2 years ago

3 0

Answer:

$\frac{3 \times 42}{28} = \frac{9}{2} = 4.5$

You might be interested in

(Question is below) A. 182 miles B. 200 miles C. 238 miles D. 249 miles

8090 [49]

Answer:

The answer is B. 200 miles

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP ME SHOW ME HOW U GOT YOUR ANSWER PLZ AND THANK U

lara [203]

Answer:

2/3

Step-by-step explanation:

There are 6 marbles in the jar

4 are not purple

P(not purple) = marbles that are not purple/ total marbles

= 4/6 = 2/3

3 0

2 years ago

Read 2 more answers

Which equation represents a line that passes through (2, –left-parenthesis 2, negative StartFraction one-half EndFraction right-

kompoz [17]

Answer:

Step-by-step explanation:

correct on Edg

7 0

2 years ago

A calculator is required to obtain the final answer on this question. A solid metal sphere at room temperature 20oC is dropped i

yKpoI14uk [10]

Answer:

T = 47.1875°C

Step-by-step explanation:

Given:

Surrounding temp, Ts = 100°C

Initial Temperature ,T0= 20°C

Increase in temperature = 15°C

Final temperature, T = 20 + 15 = 35°C

Time, t = 9 seconds

Let's take Newton's law of cooling:

$T - Ts = (T_0 - Ts)e^k^t$

We'll solve for k

$35 - 100 = (20 - 100)e^9^k$

$-65 = (-80)e^9^k$

Divide both sides by -5

$13 = (16)e^9^k$

$9k = ln (\frac{13}{16})$

$k = \frac{1}{9} ln (\frac{13}{16})$

$k = -0.02307104053$

Let's now find the temperature of the ball after 18 seconds in boiling water.

Use the Newton's equation again:

$T - Ts = (T_0 - Ts)e^k^t$

$T - 100 = (20 - 100)e^-0.0^2^3^0^7^1^0^4^0^5^3^*^1^8$

$T - 100 = (-80)e^-0.0^2^3^0^7^1^0^4^0^5^3^*^1^8$

$T - 100= -52.8125$

$T = 100 - 52.8125$

T = 47.1875°C

Temperature of the ball after 18 seconds in boiling water is 47.1875°C

5 0

3 years ago

Mitch is attending a 4-year college. As a freshman, he was approved for a 10-year, federal

stich3 [128]

Answer:

Interest capitalization occurs when unpaid interest is added to the principal amount of your student loan. When the interest on your federal student loan is not paid as it accrues (during periods when you are responsible for paying the interest), your lender may capitalize the unpaid interest.

Step-by-step explanation:

6 0

2 years ago