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kenny6666 [7]
3 years ago
7

Justify each step used to simplify the expression (3 - 2)x + 2y + 2

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0

(3 - 2)x + 2y + 2 \\  = 3x - 2x + 2y + 2 \\ =  x + 2y + 2
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Which sign completes each expression?
OverLord2011 [107]

Answer:

Below

Step-by-step explanation:

0.3>0.25

0.35<0.4

0.05<0.1

3 0
2 years ago
When truckers are on long-haul drives, their driving logs must reflect their average speed. Average speed is the total distance
KengaRu [80]

Answer:

0.500 hour

Step-by-step explanation:

Givens

<em><u>Distance</u></em>

  • Total Distance on the highway = 3hr * 60 miles / hr = 180 miles
  • Distance in the city = 20 miles
  • Total Distance = 180 + 20 = 200 miles

<em><u>Time</u></em>

  • Time on the highway = 3 hours
  • Time in the city = x

Formula

d /t = r

Solution

  • Average rate = 57.14
  • Total Distance / Total Time = average rate
  • 200 / (3 + x) = 57.14                               Multiply both sides by 3 + x
  • 200 = 57.14 * (3 + x)                               Remove the brackets
  • 200 = 57.14*3 + 57.14x                           Multiply the factors on the right
  • 200 = 171.42 + 57.14x                              Subtract 171.42 from both sides.
  • 200 - 171.42 = 171.42 - 171.42 + 57.14x   So the subtraction
  • 28.58 = 57.14x                                         Divide by 57.14
  • 28.57/57.14 = x
  • x = 0.500 hour                                        Answer


3 0
3 years ago
Read 2 more answers
Rosa gets a 233 as a score out of 285. What is the grade, A, B, C, or F?
riadik2000 [5.3K]

Answer:

B

Step-by-step explanation:

233/285*100

0.81754*100

81.754%

3 0
3 years ago
Let f be defined as shown.<br> What is f^-1(1)?
FinnZ [79.3K]

Answer:

From the above image when the input of f(x) is 9 the output is 1

So f^-1(1) is just the reverse when the input is 1 the output is 9

So f^-1(1) = 9

Hope this helps

6 0
3 years ago
Divide £250 to ratio 3:6:1
fiasKO [112]
Answer --> 75 : 150 : 25

3/10 x 250 = 75
6/10 x 250 = 150
1/10 x 250 = 25
7 0
3 years ago
Read 2 more answers
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