jeordie spreads out a recctangular picnic blanket with an area of 42 square feet. its width is 6 feet . which equation coud you
1 answer:
Answer:
6x = 42
Step-by-step explanation:
The formula to find the area of a rectangle is . Since we have a value for the width, we simply need to find what to multiply to 6 to get 42.
Let x = length
6x = 42
We then divide both sides by 6 to find the value of x.
So we know the length is 7.
To check the answer we substitute x with 7.
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Answer:
sure Gigi, as below
Step-by-step explanation:
A)
we want to know the rates. so this like like in MPH (Miles per hour) or feet per second but something that we can compare each walker with the other .... so we want some type of scale that makes sense. what are the given units.... they are distance in miles and time in hours.. so maybe MPH would work for this.
there is a very good, basic formula that you should just remember for this type of problem... I can it the dirt formula... partly b/c it's dirt easy.. and partly b/c it really is about how much dirt you cover.. i mean.. how far you do... in a distance .. and you can use any unit you want... like we'll use miles here.. for our units.. we will you d = rt where d= distance , r= rate and t = time.
d = rt.... notice the formula looks a lot like the word "dirt" handy huh...
use it to make all the walks have a number... their rate... the r in the formula... to compare with, so use your algebra skills to rearrange the formula... to
d/t = r now we can plug in each of the walkers and get a rate to comparr them
Aisha 5/2 = r so 5/2 MPH
Bob 7.5 / 5 = r so 7.5 = 15/2 then (15/2) / 5 = (15/2) * (1/5) ( cross cancel the 15 and 5 so you get (3/2) * (1/1) = 3/2
Bob = 3/2 MPH
Cora = 9 / 3.6 or 9 / 3 or (9/1) / (
) or (9/1) * (10 / 36) cross cancle the 9 and 36 so you get (1/1) * ( 10 / 4) = 10/4 = 5 /2
Cora = 5/2 MPH
Dylan = 3.75 /2.5 or 3 / 2
or (15/4) / (5/2) or (15/4 ) * (2/5) cross cancel the 2 and 4 and also cross cancel the 15 and 5 then, (3/2) * ( 1/1)= 3/2
Dylan = 3/2 MPH
MPH
Aisha = 5/2
Bob = 3/2
Cora = 5/2
Dylan = 3/2
you can now make fair comparisons among the 4 people
B)
d = rt
d/t = r
Emilio = 19.2 / 6 or 19 / 6 or (192/10 ) / (6/1) invert and multiply to bring the denominator up (192/10) * (1/6) cross cancle 6 into 192 = 32
so(32/10) * ( 1/1) = 32/10 or 16/5 = 3 or 3
which is 3.2 MPH
Fala = 10.5 / 3 or 10 /3 or
/ 3 or (21/2) / (3/1) invert and multiply the denominator (21/2) * ( 1/3) , cross cancel 3 and 21 (7/2) * ( 1/1) = 7/2
so now you have all the rates.. how fast they are walking. in Miles per hour and that's what the scale of the number line is.. so, good.. just mark each of their speeds
Bob and Dylan = 3/2 or 1.5 MPH... pretty slow.. huh :P
Cora and Aisha = 5/2 or 2.5 MPH faster but not fast
Emilo 3.2 MPH pretty quick
Fala 3.5 MPH she's fast. :D speed walking
3.2 on the number line is not marked.. 3.25 is.. so just a bit below the 3.25 mark.. that's 3 , see it?
all the others are marks on the number line.. just count marks for 1//2s
Answer:
Area of rectangle is
Perimeter of Rectangle is .
Step-by-step explanation:
Given:
Let the width of the rectangle be 'w'.
Also Given:
A rectangle has a length that is 5 meters greater than the width.
Length of rectangle =
We need to write expression for Area of rectangle and Perimeter of rectangle.
Solution:
Now we know that;
Perimeter of rectangle is equal to twice the sum of the length and width.
framing in equation form we get;
Perimeter of rectangle =
Also We know that;
Area of rectangle is length times width.
framing in equation form we get;
Area of rectangle=
Hence Area of rectangle is and Perimeter of Rectangle is
.