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Effectus [21]
2 years ago
12

Amanda drove for 3 hours through different traffic conditions. her average speed was 50mph for the first hour, 72 mph for the se

cond hour, and 46 mph for the third hour. if her car's mileage is 23 miles per gallon, how many gallons did she use
Mathematics
1 answer:
Neko [114]2 years ago
7 0
Distance traveled in the first hour = 50 miles

Distance traveled in the second hour = 72 miles

Distance traveled in the third hour = 46 miles

Total distance = 50 + 72 + 46 = 168 miles

23 miles = 1 gallon

168 ÷ 23 = 7.30 gallons (nearest hundredth)

Answer:  7.30 gallons

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Which expression is equivalent to 36/(4 + y)?
I am Lyosha [343]

Answer:

B) 36/(y+4)

Step-by-step explanation:

Use the process of elimination.

A cannot work because we are changing the operation. Instead of dividing thirty-six by the sum of four and a number, we are dividing thirty-six by four, then adding the unknown number. This is not the same as the original expression, so we know it is not this.

Next, check C. C doesn't seem right either. Remember that, unlike multiplication and addition, you cannot flip the order in which the operation is being done and still get the same answer. C says four plus a number divided by thirty-six, which is entirely different from our original expression. So the answer is not C.

And finally, check D. D doesn't work either. With D, we are dividing thirty-six by a number, then adding it to thirty-six divided by four. This is not the same as our original expression, so D isn't it.

That leaves us with B. Does it work? Yes, because changing the y and the four still will give the same thing. And yes, because 36 is being divided by the sum of that number and four. So it is our answer.

8 0
2 years ago
Cheryl and rodney are mixing yellow and blue paint to make green paint. The table shows how much of each color they use. Whose g
Tomtit [17]

The amount of blue color in the green paint is an illustration of ratios and proportions.

Cheryl's green paint has more blue color

The proportion of blue color is calculated as:

\mathbf{Proportion = \frac{Blue}{Blue+ Yellow}}

So, we have:

\mathbf{Cheryl= \frac{16}{16+ 24}}

\mathbf{Cheryl= \frac{16}{40}}

\mathbf{Cheryl= 0.40}

Express as percentage

\mathbf{Cheryl= 40\%}

\mathbf{Rodney= \frac{6}{6+ 10}}

\mathbf{Rodney= \frac{6}{16}}

\mathbf{Rodney= 0.375}

Express as percentage

\mathbf{Rodney= 37.5\%}

By comparison: 40% >37.5%

Hence, Cheryl's green paint has more blue color

Read more about proportions at:

brainly.com/question/21126582

4 0
2 years ago
The legs of a right triangle measure 6 inches and 9 units. If theta is the angle between the 6-inch leg and the hypotenuse, sin
Alex73 [517]
I got 0.55 when I did this problem. If I am wrong I am so sorry and please correct me.
4 0
3 years ago
Read 2 more answers
Tell whether -2 is a solution of the inequality n-5<8
ruslelena [56]

Answer:

-2 is a solution

Step-by-step explanation:

-2-5<8

-7<8

6 0
3 years ago
The ratio for 42 pens : 35 pencils as a fraction is
Alex73 [517]
As a fraction,
35/42, simplified, 5/6
answer=5/6
hope this helps....
4 0
3 years ago
Read 2 more answers
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