Answer:
56
Step-by-step explanation:
she ate 25% so she is left with 75%
you want to find that 25% so you do 75÷25=3
42÷3=14
25×4=100
14×4=56
she had 56 pretzels
Answer:
240g in the ratio of 5:3:4
So we need to divide it evenly.
First add up all the ratios.
5+3+4= 12
Now divide 240 by the sum.
240/ 12 = 20
Now you multiply that into each ratio.
5*20 = 100
3*20 = 60
4*20 = 80
Now put it back in the ratio with the new numbers int he exact order as before.
Final Answer: 100 : 60 : 80
Check:
You can check by adding them all up to see if they all go into 240 OR you can divide them each by the number originaly given and you should get 20.
100 + 60 + 80 = 240
100 / 5 = 20
60/3 = 20
80/4 = 20
Hi there!
So first off, here are little definitions you need to know in order to be able to answer your question :
<u>Constant</u> means that the rates of change are the same.
<u>Variable</u> means that the rates of change are different.
But from what I can see, you don't even need those definitions because you got both answers right!
Continue your great work! If there's anything just let me know! :)
Answer:
Use m a t h w a y . c o m
Step-by-step explanation:
It helps with any math homework!! trust me :)
We will solve this using a system of equations. The first part tells us that building a is 190 feet shorter than building b. Our first equation, then, is b=190+a. The second part tells us that the addition of the two buildings' heights is 1480. So our second equation is a + b = 1480. The first equation is already solved for b, so let's sub that value into the second equation for b: a+(190+a)=1480. 2a + 190 = 1480 and 2a = 1290. That means that building a is 645 feet tall. Building b is 190 feet taller, so b = 190 + 645, which is 835.
