Kat is painting the edge of a triangular stage prop with reflective orange paint. The lengths of the edges of the triangle are (3x – 4) feet, (x2 – 1) feet, and (2x2 – 15) feet. What is the perimeter of the triangle if x = 4?

Answers

Answer 1
Answer: Given:
edge 1 = 3x - 4
edge 2 = x² - 1
edge 3 = 2x² - 15

perimeter if x = 4

edge 1 = 3(4) - 4 = 12 - 4 = 8
edge 2 = 4² - 1 = 16 - 1 = 15
edge 3 = 2(4²) - 15 = 2(16) - 15 = 32 - 15 = 17

Perimeter = 8 + 15 + 17 = 40 feet.
Answer 2
Answer:

Answer:

40 feet

Step-by-step explanation:


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Multiply 4.6 x 2/7 round the answer to the nearest hundredth

Answers

type into the calculator:
4.6*(2/7)
the calculator answer is 1.31428...
we want to round to the nearest hundredth. the hundredths place is in bold: 1.31428
to round, we look at the number to the right of the hundredths place, which is underlined:
1.31428
if the number on the right is 5 or greater, we add 1 to the number to the left. if the number on the right is 4 or less, then we leave the number on the left alone.
the number on the right here is 4, so we leave the number on the left alone, leaving us with 1.31
4.6x2/7
well I converted 2/7 to  its decimal which is 0.285714286
then did 4.6x0.285714286 and got 1.314285716

2 a) Seth wants to buy a skateboard that costs $ 169. I have $ 88 in the bank. If he earns $ 7.25 an hour pulling weeds, how many hours will Seth have to work to earn the rest of the money needed to buy the Skateboard? Show or explain how you found your answer. (b) Seth wants to buy a helmet as well. A new helmet costs $ 46.50. Thinkseth thinks he can work 6 hours on Saturday to earn enough money to buy the helmet. Is he correct? Show or explain how you found your answer. (6) Setn s third goal is to join some friends on a trip to see a skateboarding show. The cost of the trip is about $ 350. How many hours will Seth need to work to afford the trip? Show or explain how you found your answer.

Answers

Answer:

The answer is 11 hour and 17 min for 2a

Algebra 1 taking stock

Answers

Given:

36 inch long pipe

Must be cut into 21/4 inch long pieces

Required:

How many pieces to be cut

Solution:

All you need to do is to divide 36 by 21/4

Dividing this will result to 48/7 pipes or 6 and 6/7 pipes 

A restaurant sells tea for $1.50 plus 0.50 per refill. The restaurant brews enough tea for 4 refills per customer . The linear function that represents the total cost of rtea refills is C(r) = 0.5r + 1.5 . Describe an appropriate domain of this function . Make sure to identify the set of numbers appropriate to the domain

Answers

4.50Answer:

Step-by-step explanation:

The steamboat River Queen travels at the rate of 30km/h in still water. If it can travel 45 km up stream in the same amount of time that it takes to go 63 km down stream what is the rate of the current.

Answers

x-the\ rate\ of\ the\ current\nt-time\n\n \left\{\begin{array}{ccc}(30-x)t=45\n(30+x)t=63\end{array}\right\n \left\{\begin{array}{ccc}t=(45)/(30-x)\nt=(63)/(30+x)\end{array}\right\n\n(45)/(30-x)=(63)/(30+x)\n\ncross\ multiply\n\n63(30-x)=45(30+x)\n1890-63x=1350+45x\n-63x-45x=1350-1890\n-108x=-540\ \ \ \ /:(-108)\nx=5\n\nAnswer:The\ rate\ of\ the\ current\ is\ 5\ km/h.

What is the value of z so that -9 and 9 are both solution of x^2+z=103-22
3
22
184

Answers

22 because -9 and 9 squared is 81 subtract that from 103

Answer:

22

Step-by-step explanation: