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Stels [109]
3 years ago
10

Evaluate 3x-2y; if x=7 and y=3

Mathematics
1 answer:
Zarrin [17]3 years ago
3 0

Answer:

15

Step-by-step explanation:

3x - 2y = ?

3(7) - 2(3) = ?

21 - 6 = ?

= 15

All you have to do is substitute the given values & follow the order of operations! Best of luck.

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Solve the equation.<br> C3 = 216
Anna [14]

Step-by-step explanation:

C= 72..............

C3=216

C=216

3

C = 72

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7 0
3 years ago
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1. ΔABC and ΔDEF are similar = Given
deff fn [24]
I think the answer is d. The slope of AC=Slope of DF.

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3 years ago
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Tom worked the following hours last week but he needs to complete his timesheet in decimals
pickupchik [31]

Answer:

Monday: 7.25

Tuesday: 6.75

Wednesday: 5.2

Thursday: 6.1

6 0
3 years ago
Kal is making 3 batches of cookies. Each batch calls for 3/4 cups of sugar. How much sugar will Kal use for all 3 batches?
balu736 [363]

Answer:

2 1/4 cups of sugar

Step-by-step explanation:

You could change 3/4 to a decimal which is .75

Then multiply that by 3

The result was 2.25, so you would convert that into a fraction which would be 2 1/4

8 0
3 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
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