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sasho [114]
3 years ago
7

Every day, Isabella practices the piano for 0.75 hour and the flute for 1.4 hours. What is the total number of hours that she pr

acticed in April? (Reminder: April has 30 days
Mathematics
1 answer:
kvasek [131]3 years ago
7 0

Answer:

She practiced a total of 64.5 hours

Step-by-step explanation:

Here, we need to know the number of hours practiced on both per day

Mathematically, that will be;

0.75 + 1.4 = 2.15 hours per day

So in 30 days ; the total number of hours will be

30 * 2.15 = 64.5 hours

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Maria is draining her hot tub at a rate of 5.5 gallons per minute. Is the amount of water left in the pool a function of the amo
AleksandrR [38]

The amount of water in the pool after t minutes is modeled by the linear function V(t) = V(0) - 5t, hence it is a function of time.

A <em>linear function</em> for the amount of water in the pool, considering that it is <u>drained at a rate of a gallons per minute</u>, is modeled by:

V(t) = V(0) - at

  • In which V(0) is the initial volume.

In this problem, draining her hot tub at a rate of <u>5.5 gallons per minute</u>, hence a = 5.5, and:

V(t) = V(0) = 5.5t

Which is a function of time.

To learn more about linear functions, you can take a look at brainly.com/question/13488309

8 0
2 years ago
An artist is deciding between two different triangular shapes to use for a sculpture. The first triangle has a base of 20 feet a
Kipish [7]
4 i belive altho  i could be way wrong
4 0
3 years ago
What’s 45 in scientific notation
Mashcka [7]

Answer

is 45 written as 4.5 x 101 in scientific notation

Step-by-step explanation:

Can i Be mark as the brainliest answer PLEASE!

8 0
3 years ago
Read 2 more answers
Find the slope and the y-intercept of the line. 7x-2y = -10 simplest form​
____ [38]

Answer:

7/2 is the slope and 5 is the y-intercept

Step-by-step explanation:

Slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.

7x-2y=-10

subtract 7x on both sides

-2y=-7x-10

divide by -2 on both sides

y=(7/2)x+5

7/2 is the slope and 5 is the y-intercept.

3 0
3 years ago
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A radioactive substance decays exponentially. A scientist begins with 150 milligrams of a
8_murik_8 [283]

Answer:

We are given

Scientist begins with 150 milligrams of a radioactive substance

so,

we can use formula

we can plug Po=150

After 29 hours, 75 mg of the substance remains

so, at t=29 , P=75

we can plug it

now, we can solve for k

now, we can take ln on both sides

now, we can plug it back

and we get

we can plug t=33

we get

..............Answer

Step-by-step explanation:

7 0
3 years ago
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