MATHEMATICS COLLEGE

I need help with this ^

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

5z-25=180

5z=180-25

5z=155

z=31

Answer 2

Answer:

Answer: Im pretty sure its 155

Step-by-step explanation:

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NBC News reported on May 2, 2013, that 1 in 20 children in the United States have a food allergy of some sort. Consider selecting a random sample of 15 children and let X be the number in the sample who have a food allergy. Then X ~ Bin(15, 0.05). (Round your probabilities to three decimal places.) (a) Determine both P(X ≤ 3) and P(X < 3). P(X ≤ 3) = P(X < 3) = (b) Determine P(X ≥ 4). P(X ≥ 4) = (c) Determine P(1 ≤ X ≤ 3). P(1 ≤ X ≤ 3) = (d) What are E(X) and σX? (Round your answers to two decimal places.) E(X) = σX = (e) In a sample of 90 children, what is the probability that none has a food allergy?

1. 5 Burgers and 3 orders of fries cost $34. 4 Burgers and 4 orders of fries cost $32. How much does each burger and each order of fries cost?2. A pile of 44 coins is made up of pennies, nickels, and dimes. If the pile is worth $3.07 and there are twice as many nickels as pennies, how many of each coin does the pile contain?

Answers

Answer:

a burger costs $5

an order of fries costs $3

7 pennies

14 nickels

23 dimes

Step-by-step explanation:

x = price of a burger

y = price of a order of fries

5x + 3y = 34

4x + 4y = 32

x + y = 8

x = 8-y

5×(8-y) + 3y = 34

40 - 5y + 3y = 34

-2y = -6

y = $3

x = 8 - 3 = $5

x = number of pennies

y = number of nickels

z = number of dimes

0.01×x + 0.05×y + 0.1×z = 3.07

y = 2x

x + y + z = 44

x + 2x + z = 44

3x + z = 44

z = 44 - 3x

0.01×x + 0.05×2x + 0.1×z = 3.07

0.11×x + 0.1×z = 3.07

0.11×x + 0.1×(44-3x) = 3.07

11x + 10×(44-3x) = 307

11x + 440 - 30x = 307

-19x = -133

x = 7

y = 2×7 = 14

z = 44 - 3×7 = 44 - 21 = 23

X +4
5) 4
4
please help!

Answers

The answer it twelve, also can I be branliest

For each boat he sells, Mick earns $149 in addition to 2% of the purchase price of the boatas commission. How much will Mick earn for a boat that was purchased at $65,000?

Answers

Answer:

c = 149 + 0.02p

Step-by-step explanation:

Determine if the transformation of figure a to figure b is a dilation

Answers

it is a dilation but it's a growth as well, it dilated but shifted as well

Convert 100 inches per minute to feet per hour?

Answers

100 inches per minute
There are 60 minutes per hour so
100 inches per minute equals
6,000 inches per hour
there are 12 inches per foot so that converts to
500 feet per hour

Find the total surface area of this cubiod

Answers

Answer:

148 cm^2.

Step-by-step explanation:

It has 2 surfaces of area 5*6, 2 of 5*4 and 2 of 4*6.

= 2*30 + 2*20 + 2*24

= 60 + 40 + 48

= 148 cm^2.

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