Answer:
Danielle is 7 and her counselor is 21
Step-by-step explanation:
Let x be the age of Danielle and y be the age of her counselor then:
y=3x
x+y=28
We can solve this using substitution. In this case, substitute 3x for y since y=3x...
x+3x=28
4x=28
Divide both sides by 4 (division property of equality)
x=7
y=3x=3(7)=21
Danielle is 7 and her counselor is 21
Answer:
414 acres.
Step-by-step explanation:
To answer this question we have to multiply the percent by the total acres.
Remember that when multiplying percents we have to move the decimal 2 places to the left.
So, the equation looks like this:

Therefore, there are 414 acres that are old-growth trees.
We can check our answer by dividing 414 by 69,000.
414/69000 = .006
.006 * 100 = .6
<em>I hope this helps!!</em>
<em>- Kay :)</em>
The area of the playground of dimensions 18 and 240is 432
.
Given If the dimensions of the playground in the layout are given by 180 cm x 240 cm.
The area of rectangle is length *breadth.
The given playground is in the shape of rectangle because there are two sides given and both the sides are different. In a rectangle length of opposite side found to be equal and each side form an angle of 90 degree.
Area=length*breadth
=180*240
=43200 
We have to convert in meters so we have to divide by 100.
Area=43200 
=43200/100
=432 
Hence the area of playground having dimensions 180 cm and 240 cm is 432
.
Learn more about area at brainly.com/question/3948796
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Answer:
.05*.05=.0025
Step-by-step explanation:
Its just simple math, not that hard.