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Mars2501 [29]
3 years ago
12

If you travel 40 miles at 45 miles per hour, how many minutes will that take you?

Mathematics
1 answer:
GenaCL600 [577]3 years ago
7 0
Ok so im not good with words and math, but i am going to try my best to explain it. first you will take 45/60 which is the 45 miles per hour. next you will put it equal to 40/x. x is how many minutes. they are set equal to each other because they are the same ratio. (i honestly dont know why you cross multiply, but you just do). you then multiply 40*60 and 45*x. this gives you 2400=45x. you then divide both sides by 45 and get 53 1/3 minutes. or 53 minutes and 20 seconds

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Your bank account has a balance of $45.24.this is $51.35 more than yesterday. What was your account balance yesterday?
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Answer: -6.11

Step-by-step explanation:

Subtract.

 45.24

- 51.35

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Invert the operation because since the result is a negative number, we cannot operate 51 of 45. Just keep in mind that the result is going to be negative because 51 is bigger than 45.

  51.35

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   -6.11

5 0
3 years ago
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Describe the relationship between the value of a dollar and the value of a dime
solong [7]
The value of a dollar is 10x the value of a dime, worth 100 pennies.
The value of a dime is 10x less the value of a dollar, worth 10 pennies.
4 0
3 years ago
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A school is organizing a weekend trip to a nature preserve. For each student, there is a $60 charge, which covers food and lodgi
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Answer:

31 students will be going on the trip.

Step-by-step explanation:

Create an equation.

60x+40x+30x=4030

Combine like terms.

130x=4030

Divide.

x=31

Checking solution...

60(31)+40(31)+30(31)=4030

1860+1240+930=4030

4030=4030

Hope this helps!

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8 0
1 year ago
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Solve the system of equations: x – 4y = –8 and –3x + 12y = 24.
ale4655 [162]
It should be C
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4 0
3 years ago
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ioda

Answer:

203 feet.

Step-by-step explanation:

Please find the attachment.

Let h represent the height of the building.

We have been given that at 3:30 in the afternoon in mid-September the Kimball Tower casts a shadow about 290 feet long when the sun's rays come down at an angle about 35 degrees above the horizontal.    

We know that tangent relates opposite side of a right triangle to its adjacent side.

\text{tan}=\frac{\text{Opposite}}{\text{Adjacent}}

Upon substituting our given values in above formula, we will get:

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h=290*0.70020753821

h=203.0601860809

h\approx 203

Therefore, the building is approximately 203 feet high.

 

3 0
3 years ago
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