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const2013 [10]
3 years ago
9

Do anyone understand maths

Mathematics
1 answer:
nevsk [136]3 years ago
6 0
I think it’s 62.8
Sorry if I’m wrong
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May anyone help?? i didnt score correct also can someone please correct me
kotegsom [21]

\longrightarrow f( \rm x) = (x - 4)(x + 4)

\\  \\

\longrightarrow f( \rm x) =  {(x)}^{2}  -  {(4)}^{2}

\\  \\

\longrightarrow f( \rm x) =  {x}^{2}  - 16

Formula used = (a + b) (a - b) = a² - b²

7 0
2 years ago
Find the distance between points A (10,-1) and B (-2,5). Round to the nearest tenth
bija089 [108]

Answer:

<h2>The answer is 13.4 units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2}  +  ({y1 - y2})^{2} }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A (10,-1) and B (-2,5)

The distance is

|AB|  =  \sqrt{ ({10 + 2})^{2} +  ({ - 1 - 5})^{2}  }  \\  =  \sqrt{ {12}^{2}  +  ({ - 6})^{2} }  \\  =  \sqrt{144 + 36}  \:  \:  \:  \:  \:  \:  \:   \\  =  \sqrt{180}  \\  = 6 \sqrt{5}  \:  \:  \\  =13.416407

We have the final answer as

<h3>13.4 units to the nearest tenth</h3>

Hope this helps you

7 0
3 years ago
Probability distribution
IRINA_888 [86]
To find out the percentage, just like with the average, you need to add up all the numbers which is 60. Now you have to find the probability of 2 cars in a line, you would have to divide, 16/60, Which is about .27, now you have to convert to percentage, which is 27%
7 0
3 years ago
Solve: negative 1 over 2x + 1 = −x + 8
marusya05 [52]
Equation: -1/2x + 1 = -x + 8

Work:

-x/2 + 1 = -x + 8

1 - x/2 = -x + 8

1 - x/2 = 8 - x

2 - x = 16 - 2x

-x = 16 - 2x - 2

-x = 2x + 14

-x + 2x = 14

x = 14

Final Answer:

x = 14
8 0
4 years ago
Your neighbor will pay you $9.00 to wash his car. How many full hours will you now have to babysit (at $10.00 an hour) so you ca
Ber [7]
Will you will have to babysit like 6 hours cause you got pay only 9 from the car wash and 10x5=50 + the 9 car wash is 59 only and u will need the .95 so u will need 6 hours of babysitting for the .96
8 0
2 years ago
Read 2 more answers
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