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Brrunno [24]
2 years ago
7

I need help (REAL ANSWERS ONLY)

Mathematics
1 answer:
MArishka [77]2 years ago
8 0

Answer:

1)

At Bombinoes, if he delivers 10 pizzas, he will make $81.     y = 2.50x + 56

At Little Squeezers, if he delivers 10 pizzas, he will make $78.     y = 3x + 48

At Pizza Tent, if he delivers 10 pizzas, he will make $79.50.     y = 2.75x + 52

2)

Little Squeezers would pay him the most if he delivered 20 pizzas. They would pay him a total of $108.

Step-by-step explanation:

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(9b+7)+(4x-3)+(8n+5)=? ​(Simplify your​ answer.)
uysha [10]

Answer:

9b+8n+4x+9

Hope that helps!

8 0
2 years ago
Read 2 more answers
2) A pharmacist has 60 ml of an 8% alcohol solution. How much water should be evaporated so that the solution that remains is 10
Amiraneli [1.4K]

Answer:

let water evaporated be x ml

...

acid 8% ------60 ml

...

final quantity = 10% ----(60-x)

..

60*8 = 10(60-x)

480=600-10x

10x=600-480

10x= 120

/10

x=12 ml should be evaporated.

Step-by-step explanation:

4 0
3 years ago
In an article about the cost of health care, Money magazine reported that a visit to a hospital emergency room for something as
ASHA 777 [7]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

Assume a normal distribution :

Mean (m) = 328

Standard deviation (sd) = 92

To obtain Zscore :

Zscore = (x - m) / sd

What is the probability that the cost will be more than $500?

x = $500

Zscore = (500 - 328) / 92 = 172 / 92 = 1.869 = 1.87

1 - p(Z < 1.87) = 1 - 0.9693 = 0.0307

b. What is the probability that the cost will be less than $250?

x = $250

Zscore = (250 - 328) / 92 = - 78 / 92 = - 0.8478 = - 0.85

p(Z < - 0.85) = 0.1977

c. What is the probability that the cost will be between $300 and $400?

x = 300

Zscore = (300 - 328) / 92 = - 28/ 92 = -0.30

p(Z < - 0.3) = 0.3821

x = 400

Zscore = (400 - 328) / 92 = 72/ 92 = 0.783

p(Z < 0.783) = 0.7823

0.7823 - 0.3821 = 0.4002

d. If the cost to a patient is in the lower 8% of charges for this medical service, what was the cost of this patient’s emergency room visit?

Probability is lower 8%

P (Z < Zscore) = 0.08

Zscore of 0.08 corresponds to - 1.41 on the z table

Zscore = (x - m) / sd

-1.41 = (x - 328) / 92

-129.72 = x - 328

-129.72 + 328 = x

x = 198.28

4 0
3 years ago
the crowd at a sporting event is estimated to be 2,500 people. the exact attendance is 2,486 people. what is the percentage erro
Verdich [7]

Answer:

0.56%

Step-by-step explanation:

Percentage error

=  \frac{2500 - 2486}{2500}  \times 100 \\  \\  =  \frac{1400}{2500}  \\  \\  = 0.56\%

5 0
3 years ago
Read 2 more answers
Sarah has a bag of 50 skittles, some are red and some are yellow. Sarah randomly pulls a skittle out of the bag and records it,
Leno4ka [110]

Answer:

20

Step-by-step explanation:

Assume n is the number of times she pick a skittle out of the bag

The probability she pick out red : 8/n

The probability she pick out yellow : 12/n

=> The ratio of red and yellow skittle : 8/n : 12/n = 8/12 = 2/3, means every 2 red skittles we have 3 yellow ones.

But we have 50 skittles, so the likely numbers of reds in the bag is = 2*\frac{50}{5} = 20

6 0
3 years ago
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