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Travka [436]
2 years ago
7

Help please!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
kakasveta [241]2 years ago
8 0

Answer:

Step-by-step explanation:

A signed number means that the number uses a plus or minus sign in front of it.

A

Her account will get 200 dollars larger so you will use + 200

B

The temperature is 12 degrees below zero (cold!!!) so you will write - 12

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Which linear inequality is represented by the graph? y ≤ 1/2x + 2 y ≥ 1/2x + 2 y ≤ 2/3x + 2 y ≥ 2/3x + 2
patriot [66]
Post the graph and I can help
6 0
3 years ago
Read 2 more answers
The cost, C. of producing coolers, x, is modeled by the equation C = 0.005x2 - 0.3x + 17. How many coolers are
melamori03 [73]

Answer:

66 coolers

Step-by-step explanation:

C = 0.005x² - 0.3x + 17

When C = $19

19 = 0.005x² - 0.3x + 17

19 - 17 = 0.005x² - 0.3x

2 = 0.005x² - 0.3x

0.005x² - 0.3x - 2 = 0

x = -b ± √b² - 4ac / 2a

= -(-0.3) ± √-0.3² - 4*0.005*-2 / 2*0.005

= 0.3 ± √ 0.09 - (-0.04) / 0.01

= 0.3 ± √ 0.09 + 0.04 / 0.01

= 0.3 ± √ 0.13 / 0.01

= 0.3/0.01 ± √0.13/0.01

= 30 ± 0.36/0.01

x = 30 ± 36

x = 30 + 36 or 30 - 36

x = 66 or -6

Number of coolers can not be negative

Therefore, number of coolers produced when the cost is $19

is 66 coolers

3 0
3 years ago
1. You can finish 9 math problems in 20/3 minutes. What is your unit rate of problems per minute?
MArishka [77]
Where is the question to this or is this the answer
8 0
3 years ago
An urn contains 17 white balls and 18 red balls. A sample of four balls is selected at random from the urn. What is the probabil
erik [133]

Answer:

c. 0.3974

Step-by-step explanation:

Given;

number of white balls, W = 17

number of red balls, R = 18

Total number of balls, T = 35

The number of ways the event will occur is given by

= P(2 whites) and P(2 reds)

= P(2whites) x P(2 reds)

= 17C2 x 18C2

= 136 x 153

= 20,808

The total number of possible outcome

= 35C4

= 52,360

The probability = 20,808 / 52,360

                          = 0.3974

The correct option is "C"

6 0
3 years ago
Please help me with this!!!
MrMuchimi

Answer:

yea

Step-by-step explanation:

4 0
3 years ago
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