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Illusion [34]
3 years ago
12

The temperature is -3°F at 7:00 A.M. During the next 4 hours, the temperature increases 21°F. What is the temperature at 11:00 A

.M.?
Mathematics
1 answer:
3241004551 [841]3 years ago
4 0

Answer: 18°F

Step-by-step explanation: if you add 21 and -3 you get 18

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Joe drinks 10 liters of water every week. There are approximately 19 liters in 5 gallons. How many gallons of water would Joe dr
svetlana [45]

Answer:

8gallons

Step-by-step explanation:

If Joe drinks 10 liters of water every week, then;

10liters = 1 week

After 3weeks;

x litres =3 weeks

Divide both expressions

10/x = 1/3

x = 3*10

x = 30litres

This means he consumes 30litres in 3 weeks

If there are approximately 19 liters in 5 gallons, the;

19litres = 5gallons

To determine the number of gallons consumed in 3 weeks;

30litres = y

Divide both expressions

19/30 = 5/y

Cross multiply

19 * y = 30*5

19y = 150

y = 150/19

y = 7.89

y ≈ 8 (to nearest whole number)

Hence Joe drinks 8gallons of water in 3weeks

7 0
2 years ago
40x + 60 = 20. what does x equal?
Elena-2011 [213]

Subtract 60 on both sides to get -40.

You are left with 40x=-40

Divide both sides by 40 to leave x by itself.

You get x=-1.

7 0
3 years ago
Read 2 more answers
Identify the initial amount a and the rate of growth r (as a percent) of the exponential function y = 12(1.05)t. Evaluate the fu
aleksandrvk [35]

Answer

Exponential function is in the form of : y =a(1+r)^x .....[1]

where a is the initial amount and r is the growth rate and (1+r) is the growth factor.

Given the function: y = 12(1.05)^t

On comparing with equation [1] we have;

Initial amount(a) = 12

1+r = 1.05

Subtract 1 from both sides we get;

r = 0.05 or 5%

Growth (r) = 0.05 or 5%

Now, evaluate the function for t = 5 we have;

Substitute the value of t=5 in the given function we have;

y = 12(1.05)^{5}

y = 12 \cdot 1.27628156 = 15.3153787

Therefore, the value of function when t=5 to the nearest tenth is 15.3

7 0
3 years ago
Please help. And give an explanation. I am so lost.
Verdich [7]

2 opposite interior angle (opposite to the exterior angle) added together are equal to the exterior angle

6x-1+85 = 18x

6x +84 = 18x

subtract 6x from both sides

84 = 12x

divide both sides by 12

x = 7

<em>hope this helps! </em>

8 0
3 years ago
Suppose that Marlie had decided to apply for a private loan rather than a federal loan. She has
34kurt

Using simple interest, and considering a loan of $5,000, it is found that:

a) Her monthly payment is of $74.17.

b) She will pay back $8,900.

c) The total interest amount is of $3,900.

The amount of money after <u>t years</u> in <em>simple interest</em> is modeled by:

A(t) = A(0)(1 + rt)

In which:

  • A(0) is the initial amount.
  • r is the interest rate, as a decimal.

In this problem:

  • The loan is of $5,000, hence A(0) = 5000.
  • The APR is of 7.8%, hence r = 0.078
  • 10 years, hence n = 10

Item b:

A(10) = 5000[1 + 0.078(10)] = 8900

She will pay back $8,900.

Item a:

$8,900 will be paid in 10 x 12 = 120 months, hence:

M = \frac{8900}{120} = 74.17

Her monthly payment is of $74.17.

Item c:

<u>Loan of $5,000, pays back $8,900</u>, hence:

8900 - 5000 = 3,900

The total interest amount is of $3,900.

A similar problem is given at brainly.com/question/13176347

5 0
2 years ago
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