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Fed [463]
3 years ago
13

I WILL GIVE BRAINLY AND 30 POINTS TO WHOEVER ANSWERS FIRST AND GETS THEM RIGHT

Mathematics
2 answers:
ivann1987 [24]3 years ago
8 0
8. D
9. A
10. D
Last one D
Bess [88]3 years ago
4 0

Answer:

8. D

9. A

10. D

Step-by-step explanation:

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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
2 years ago
The quotient of a number y and 22
Stels [109]
Y/22 would be the answer to your question.
4 0
3 years ago
Last year, the price of the hamburger Wonderful Whopper was $2.40. This year the price increased to $2.70. If p is the percent i
a_sh-v [17]

im not great at this im learning it to but im going to say b from what ive learned if you can find a better answer find it

4 0
3 years ago
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If anyone knows how to do this please help, its for a test and I have to finish the course by 11:59 tonight
abruzzese [7]
The correct answer would be c. hope this helps
3 0
2 years ago
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What's 65-70 days in weeks
dusya [7]

Answer:

About 9-10 weeks

Step-by-step explanation:

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