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iren [92.7K]
3 years ago
10

Using the illustration below, calculate the area of the circle.

Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

d^2 = 12^2 + 5^2 = 169

d = 13

r = d/2 = 6.5

A = pi·6.5^2 = 132.73 cm²

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A restaurant operator in Accra has found out that during the partial lockdown, if she sells a plate of her food for GH¢20 each,
Lilit [14]

Answer:

Step-by-step explanation:

First, note this parameters from the question.

We let x = number of $5 increases and number of 10 decreases in plates sold.

Our Revenue equation is:

R(x) = (300-10x)(10+5x)

We expand the above equation into a quadratic equation by multiplying each bracket:

R(x) = 3000 + 1500x - 3000x - 1500x^2

R(x) = -1500x^2 - 1500x + 3000 (collect like terms)

Next we simplify, by dividing through by -1500

= 1500x^2/1500 - 1500x/1500 + 3000/1500

= X^2 - x + 2

X^2 - x + 2 = 0

Next, we find the axis of symmetry using the formula x = -b/(2*a) where b = 1, a = 1

X = - (-1)/2*1

X = 1/2

Number of $5 increases = $5x1/2 = $2.5

=$2.5 + $20 = $22.5 ticket price gives max revenue.

7 0
3 years ago
three different accounts are described below. order the accounts to their values after 10 years, from greatest to least.
Sedbober [7]

Answer

You deposit $800 in an account that earns 7.5% annual interest compounded quarterly.

Step-by-step explanation:

From the close eye, this seems to me the best and most factual answer to be found!! Goodluck with your quiz!

6 0
3 years ago
Read 2 more answers
What is an ordered pair (x,y) that is a solution to x-3y=3
Alina [70]

Answer:

an ordered pair could be (9,2)

6 0
3 years ago
I also got this one wrong as well can someone tell me what I'm doing wrong so I can change it
Angelina_Jolie [31]
The answer is:  [D]:  "Subtract 5 from 10" .
____________________________________
Explanation:
____________________________________
Use the correct order of operations, according to the mnemonic: 
         "PE MD AS".

The "P" stands for "parentheses", which takes top (first priority); and there are values in parentheses in this expression—specifically, the "(10 - 5)" .  So the first step is to "subtract 5 from 10" —which is:  "Answer choice: [D]".
    Your error was starting at the beginning of the problem; and not using the "order of operations".
____________________________________________________
6 0
3 years ago
Do you know the answer to this question
Vika [28.1K]

Answer:

125$ worth because you would not spend it all if you picked 625 and the others would give way too many away

4 0
3 years ago
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