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valentinak56 [21]
3 years ago
14

Robert earned £ 8500. He got a bonus of 5% at the end of the year.

Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

a) 8925, b)6872.25

Step-by-step explanation:

a) (8500)+(8500(5/100))=8925

b) (8925)-(8925(23/100))=6872.25

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The circle below is centered at the origin and has a radius of 4. What is its equation?
Alecsey [184]

Answer:

C) x^2 + y^2 = 16

Step-by-step explanation:

<h2><u>Find the equation </u></h2>

since the radius is  4 this means that anywhere from the center of the circle to the edge of the circle is 4. hence :

place the horizontal line of the radius where y = 0 .

this means that if y = 0 , then x = 4

therefore :

x^2 + y^2

4^2 + 0^2

= 16

<h3><u>hence the answer is C ) x^2 + y^2 = 16</u></h3>
7 0
3 years ago
Evaluate the expression when x=6 and y=-3.<br> -x+7y
lys-0071 [83]

Answer:

-27

Step-by-step explanation:

Let x = 6 and y = -3

-(6)+7(-3)\\-6-21\\-27

3 0
3 years ago
An arithmetic sequence has this recursive formula:
horsena [70]

Answer:

\text{\bf{C.}}\quad a_n=4+(n-1)(-7)

Step-by-step explanation:

An arithmetic sequence that is described by the explicit formula ...

  a_n=a_1+(n-1)d

can also be described by the recursive formula ...

  \left \{\begin{array}{l}a_1=\text{(first term)}&a_n=a_{n-1}+d&\end{array}\right.

Matching parts of the formulas, we see that a1 = 4, d = -7. Putting these values into the explicit formula gives ...

a_n=4+(n-1)(-7)

4 0
3 years ago
Use the equation f(x)=0.003x²-0.083x+2.514. Predict the value for x+20 years.
Lelu [443]

Answer:

2.054

Step-by-step explanation:

put the value of x in f(x)

7 0
2 years ago
If 18.9 million computers were in use in 1980 and the number is rising by 19% annually, predict the number of computers in use i
4vir4ik [10]
18.9(1+0.19)^35, 35 is the number of years
use your calculator, you should get 661.5, round to the newest whole number 662million

4 0
3 years ago
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