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Ugo [173]
3 years ago
6

PLEASE HELP MY TEST IS DUE SOON! look at photo all of the questions

Mathematics
1 answer:
vivado [14]3 years ago
5 0

Answer:

12. Triangle; heptagon

13. 180(n - 2)

14. nonagon

that's all ik sorry but hope it helps a lil :)

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The temperature of a city changed by -20°C over a four week. If the temperature changed by the same amount each week write an ex
andre [41]

Answer:

A)  T=\frac{-20}{4}

B) T = -5 °C

Step-by-step explanation:

A) Let T be the change in temperature of the week. T is determined as the total temperature change (-20°C) divided by the number of weeks that have passed (4 weeks). The expression is:

T=\frac{-20}{4}

B) In order to simplify the expression, simply perform the division.

T=\frac{-20}{4}\\T=-5^oC

This means that the temperature has dropped by 5 degrees each week.

8 0
3 years ago
For the function f(t) =Pe^rt , if P= 7 and r= 0.07 then what is the value of f(7) to the nearest tenth?
White raven [17]

Answer:

A. 11.4  

Step-by-step explanation:

f(t) = P e^{rt}

Data:

P = 7

r = 0.07

Calculation:

\begin{array}{rcl}f(t) & = &Pe^{rt}\\f(7)& = & 7 e^{(0.07 \times 7)}\\ & = & 7 e^{0.49}\\& \approx & 7 \times 1.632\\ & \approx & \mathbf{11.4}\\\end{array}

8 0
3 years ago
Read 2 more answers
Jon has to pay $7.50 admission for the skating ring and $1.50 per hour to rent rollerblades.write an equation for the cost (y) b
e-lub [12.9K]
Here is one equations.

y = 1.50x + 7.50
7 0
3 years ago
Solve the inequality <br><br> 4b
Mnenie [13.5K]
Could you maybe provide us with a better explantion or picture?
4 0
3 years ago
When a number is increased by 2.8%, the result is 56. What is the original number to
Sever21 [200]

Answer:

The original number was 54.5.

Step-by-step explanation:

If a number is increased by 2.8%, then it is 102.8% of it's original number.

In mathematics, "of" in virtually all cases means "multiplied by".

Therefore, we do the opposite:

1. Convert to a decimal.

102.8% = 1.028

2. Divide by the decimal.

56 \div 1.028 = 54.47

3. Round it to the nearest tenth.

54.47 rounds to 54.5.

6 0
3 years ago
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