A triangle has a perimeter of 31. The longest side is equal to 12. The difference of the other two is 3. What is length of the s
1 answer:
You might be interested in
Answer:
32 cm by 18 cm
16 cm by 36 cm,
48 cm by 12 cm
24 cm by 24 cm
Step-by-step explanation:
<u><em>The complete question is</em></u>
A boy wants to build rectangular cages. He wants all the sides on the base of his cages to beat least 10 cm long.he also wants the base area to equal 576 cm2. The boy needs help to find all the possible lengths and widths for the base of the cages. He used only whole centimeters, with no fractional parts.what are all the possible dimensions for the rectangular base?
we know that
The number 576 decompose in prime factors is the same that write
To find out possible side lengths, multiply different combinations of these prime numbers together (make sure each pair adds up to 10)
3x3=9cm 2x2x2x2x2x2= 64cm ----> is not a combination (one side is not greater than 10)
3x3x2= 18cm 2x2x2x2x2= 32cm
3x3x2x2= 36cm 2x2x2x2= 16cm
3x2x2= 12cm 3x2x2x2x2= 48cm
3x2x2x2= 24cm 3x2x2x2= 24cm
therefore
32 cm by 18 cm
16 cm by 36 cm,
48 cm by 12 cm
24 cm by 24 cm
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