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slavikrds [6]
3 years ago
11

15 out of the 20 students at the lunch table had a sandwich. What percent of the table do those 15 students represent? Put this

in a proportion.
Mathematics
1 answer:
shusha [124]3 years ago
5 0
Hello!! So any time a question says "What percent" you can immediately write down the fraction X/100. The proportion would be 15/20= x/100. Then cross multiply to get the equation 1,500=20x. Divide both sides by 20 and x equals 75! Hope this helps!
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You plan to construct a brick wall measuring 14.5 feet in length 5.5 feet in height and 0.5 feet in width of a break measures 6
My name is Ann [436]
The measure of the brick wall in inches is given by 14.5 x 12 by 5.5 x 12 by 0.5 x 12 = 174 by 66 by 6

Total volume of the brick wall is given by 174 x 66 x 6 = 68,904 cubic inches.

Volume of each brick = 6 x 4 x 2 = 48 cubic inches.

Therefore, number of bricks needed is given by 68,904 / 48 = 1,435.5 bricks.
6 0
3 years ago
if you run for 4 hours at 8miles an hour and walk 8 hours at 2 miles an hour, how far will you you have gone at the end of 12 ho
wariber [46]

Answer:

48 miles

Step-by-step explanation:

run -- 4 hrs at 8 mph = 4 • 8 = 32 miles

walk -- 8 hrs at 2 mph = 8 • 2 = 16 miles

32 + 16 = 48 miles

4 0
3 years ago
Read 2 more answers
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matrenka [14]

Answer: About 804.25

Step-by-step explanation:

Do the inverse of the circumference formula and then take the radius and put it into the formula for the area of a circle

7 0
3 years ago
choose the equation in point slope form for the line that is perpendicular to the given line and passing through the given point
alexdok [17]

We want to determine the equation in point slope form for the line that is perpendicular to the given line and passing through the point (5.6) .

The equation and the point is;

y=\frac{2}{3}x+9,(5,6)

We know that for two lines to be perpendicular, the product of their slopes should be -1.

Therefore, the slope of the perpendicular should be;

m=-\frac{1}{(\frac{2}{3})}=-\frac{3}{2}

The second condition is that the line must pass through the point (5,6) , to do thid, we write the equation of the line in point slope form which is;

y-y_1=m(x-x_{1_{}})

Inserting all values, we have,

y-6=.-\frac{3}{2}(x-5)

That is the final answer.

6 0
1 year ago
Using numbers and operations to write each phrase as an expression the difference between 58 and 47
evablogger [386]
58 - 47 = 11
(written out in spoken words)
fifty-eight minus forty-seven equals eleven

Hope this helps!

4 0
3 years ago
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