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KengaRu [80]
4 years ago
7

Evaluate 4 |7 − n| + 5 when n = 12 .

Mathematics
1 answer:
Arlecino [84]4 years ago
8 0

Answer:

15

Step-by-step explanation:

4 |7 − n| + 5

Substitute n = 12

4 |7 − 12| + 5

4 |-5| + 5

Take the absolute value of -5, which is 5

4 * 5 +5

Multiply

20 -5

15

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A friend makes three pancakes for breakfast. One of the pancakes is burned on both sides, one is burned on only one side, and th
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Answer:

50%

Step-by-step explanation:

Given that one side of the pancake is burned. The pancake you were served cannot be the one that is not burned on either side. Therefore, you were either served the pancake burned on both sides, or the pancake that was only burned in one side. Thus, there is a 50% percent chance that the other side is also burned.

7 0
3 years ago
Los 800 am termómetro marca 2°C. De las 8 am a las 11 am baja a razón do 3C por hora y de 11 am 12pm sube a razón
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Answer:

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6 0
3 years ago
Danielle earns a 8.25% commission on everything she sells at the electronics store where she works. She also earns a base salary
Mariulka [41]

Answer: her sales last week was $4300.

Step-by-step explanation:

Let x represent her her sales in a week.

Danielle earns a 8.25% commission on everything she sells at the electronics store where she works. This means that the commission she gets if she makes sales of $x is 0.0825x

She also earns a base salary of $675 per week. The expression for the total earnings for a week in which she made sales of $x would be

0.0825x + 675

if her total earnings for last week were $1,029.75, it means that

0.0825x + 675 = 1029.75

0.0825x = 1029.75 - 675

0.0825x = 1029.75 - 675

0.0825x = 354.75

x = 354.75/0.0825

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3 0
3 years ago
Can someone explain how to solve this?
Sav [38]
Look up on google to find out the answer that’s how I get mine
6 0
3 years ago
A submarine cruises underwater at 20 km/h and on
Darina [25.2K]

Answer:

System of equations:

20x + 30y = 650

x + y = 25

Time underwater = 10 hours

Time at the surface = 15 hours

Step-by-step explanation:

Let x = time underwater at 20 km/h.

Let y = time on the surface at 30 km/h.

speed = distance/time

distance = speed * time

distance underwater: 20x

distance on the surface: 30y

total distance: 650

20x + 30y = 650

total time: x + y

total time: 25

x + y = 25

20x + 30y = 650

x + y = 25

20x + 30y = 650

-20x - 20y = -500

--------------------------------

          10y = 150

              y = 15

x + y = 25

x + 15 = 25

x = 10

4 0
4 years ago
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