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MAVERICK [17]
3 years ago
15

My teacher won't help i I actually want to learn this can you please help me​

Mathematics
1 answer:
Reika [66]3 years ago
6 0
15 you have to do all the steps thank it this I think
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Find the surface area of the cone to the nearest tenth.
vfiekz [6]
Surface area = base area + side area

= pi * 7^2 + pi * 7 * 27 = 238pi = 747.7 cm^2
7 0
3 years ago
Read 2 more answers
I need help with these three problems.... please help me????
viva [34]

12. Answer: 2130

<u>Step-by-step explanation:</u>

   T = -0.01y + 10.6

 9.2 = -0.01y + 10.6

<u>-10.6</u>    <u>            -10.6 </u>

 -1.4 = -0.01y

<u> ÷-0.01</u>  <u>÷-0.01 </u>

140  = y

"y" represents the number of years after 1990

 1990 + 140

= 2130

**************************************************************

13. Answer: -0.0036° per foot

<u>Step-by-step explanation:</u>

Since the relationship is linear, then we can set up the values as x, y coordinates and use the slope formula to find the rate of degrees over feet.

(6562, 63) and (16405, 28)

rate = \frac{28 - 63}{16405-6562}

      = \frac{-35}{9843}

      = \frac{-0.0036}{1}

**************************************************************

14. Answer: $0.28 per kWh

<u>Step-by-step explanation:</u>

Same reason as #13

(200, 55) and (500, 140)

rate = \frac{140-55}{500-200}

      = \frac{85}{300}

      = \frac{0.28}{1}

 

5 0
3 years ago
Maaz has a bank account with less than $400 in it. His bank pays no interest on that account, and charges $2 per month for each
Ede4ka [16]

Answer:

Around $352

Step-by-step explanation:

400 -48

5 0
3 years ago
Mr. Francis bought a pair of shoes on sale for 40% off. The regular price was $55, not including tax. How much did Mr. Francis p
maw [93]

Answer:

He paid $33 dollars for the shoes

Step-by-step explanation:

8 0
3 years ago
I live in a state with a 6.5% sales tax. What would the tax be for a TV with a
Sedaia [141]

Answer:

Step-by-step explanation:

500*6.5%=32.50 tax

tax is $32.50

total with tax is $532.50

4 0
3 years ago
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