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Dimas [21]
4 years ago
9

A scientist from the United States conducts an experiment using miles per hour to measure speed why might this be confusing for

scientists and other countries
Mathematics
1 answer:
juin [17]4 years ago
4 0
The scientific mathematical language barrier.
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You buy a total of 25 burgers and tacos for $67.50. The burgers cost $3.50 each and the tacos cost $2.25 each. Find the number o
Ahat [919]

Answer: you bought 9 burgers and 16 tacos

Step-by-step explanation:

Let x represent the number of burgers that you bought.

Let y represent the number of tacos that you bought.

You buy a total of 25 burgers and tacos. It means that

x + y = 25

The burgers cost $3.50 each and the tacos cost $2.25 each. The total cost of the burgers and tacos that you bought is $67.50. It means that

3.5x + 2.25y = 67.5- - - - - - - - - - - - 1

Substituting x = 25 - y into 1, it becomes

3.5(25 - y) + 2.25y = 67.5

87.5 - 3.5y + 2.25y = 67.5

- 3.5y + 2.25y = 67.5 - 87.5

- 1.25y = - 20

y = - 20/ - 1.25

y = 16

x = 25 - y = 25 - 16

x = 9

5 0
3 years ago
F(x)=ln (4-x) find the domain of the logarithmic function
jarptica [38.1K]
Answer: X=(-infinity,4)

3 0
3 years ago
Read 2 more answers
2/3 divided by 4???????????????????
ehidna [41]
2/3 / 4 = 2/3 / 4/1 During division, the 2nd fraction flips over and the sighn becomes its opposite. division to multiplication.
2/3 * 1/4 =2/12 or 1/6.
4 0
3 years ago
Read 2 more answers
You are going to buy doughnuts for your coworkers. You buy 2 boxes of glazed doughnuts for $3.99 each, 3 boxes of chocolate-cove
Anuta_ua [19.1K]
You will receive $23.56 back.
4 0
3 years ago
Education: 3/2 t- 16 = 4/3 t - 6 How do I get that both variables stay at left side .
MAVERICK [17]

Answer:

60

Step-by-step explanation:

3/2t-16=4/3t-6

       +16      +16

3/2t=4/3t+10

      -4/3t

(t/6)6/1= 10(6/1)

t=60

5 0
3 years ago
Read 2 more answers
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