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3 years ago

What percent of the shaded checker board squares have pieces?

Mathematics

1 answer:

Alenkasestr [34]3 years ago

5 0

Answer:

25%

Step-by-step explanation:

From the question given above, the following data were obtained:

Total shaded checker board (T) = 32

Shaded checker board with pieces (S) = 8

Percentage of Shaded checker board with pieces =?

We can obtain the percentage of checker board with pieces as follow:

Percentage of Shaded checker board with pieces = Shaded checker board with pieces / Total shaded checker board × 100

= S / T × 100

= 8 / 32 × 100

= 25%

Therefore, percentage of Shaded checker board with pieces is 25%

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From a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour

Bogdan [553]

Answer:

Both boats will be 54 miles apart after 3 hours.

Step-by-step explanation:

Given that from a point on a river, two boats are driven in opposite directions, one at 7 miles per hour and the other at 11 miles per hour, to determine how many hours they will be 54 miles apart, the following calculation must be performed :

54 / (11 + 7) = X

54/18 = X

3 = X

Therefore, both boats will be 54 miles apart after 3 hours.

4 0

3 years ago

A geologist in South America discovers a

diamong [38]

Answer:

This is a radioactive decay / half-life problem.

Initial amount of C 14 = 100% Present Amount = 57%

k = .0001 (that value should be negative)

Nt = No * e^ (k*t)

You need to solve that equation for "time" (equation attached)

time = natural log (Ending amount / Starting Amount) / k

time = natural log (57% / 100%) / -.0001

time = ln (.57) / -.0001

time = -.56211891815 / -.0001

time = 5,621.2 years (age of the bird skeleton)

These problems are quite complicated but I think I know this pretty well.

Need to know more? Visit my website (it's on the graphic).

Step-by-step explanation:

7 0

4 years ago

Where do I place the coordinates for -2x-5 and -x-4

Maslowich

Step-by-step explanation:

you need to calculate coordinates first. just by having the function definitions you don't have any coordinates yet.

I typically pick x = 0 as a first point.

so, that gives

-2×0 - 5 = -5

as y result for the first line.

the point on line 1 is then (0, -5)

and we get -0 - 4 = -4 as y result for the second line.

the point for the second line is (0, -4)

for second points I typically go for x = 1.

for the first line we get

-2×1 - 5 = -2 - 5 = -7

and the second point is (1, -7) for the first line.

for the second line we get

-1 - 4 = -5

and the second point is (1, -5) for the second line.

so, make points on the chart for all 4 points, and connect them (and extend the connecting lines to the left and right to the end of the grid).

and the crossing point ?

that is where both equations deliver the same result.

so,

-2x - 5 = -x - 4

-x = 1

x = -1

and the y is then e.g. -2×-1 - 5 = 2 - 5 = -3

and the crossing point is (-1, -3)

6 0

2 years ago

Giovanni orders a pastry from the bakery. The price of the pastry before tax is $4.50. Giovanni wants to know the total price in

Gennadij [26K]

Answer:

$4.95

Step-by-step explanation:

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3 years ago

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Solve five ninths plus four sixths.

Olin [163]

Answer:

11/9

or 1 and 2/9

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Step-by-step explanation:

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3 years ago