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kvasek [131]
3 years ago
15

A washing machine is filling up with water at a constant rate. The rate is 3/4 of a gallon in 1/5of a minute. Don calculated the

unit rate to be 3/20 of a gallon per minute. What did he do wrong?
I need help quick
Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
8 0
First, we need to see what 1/5 of a minute is.
60÷5=12
So, there's 3/4 of a gallon every 12 seconds. We need to multiply 3/4 by 5 to find every minute.
3/4×5=15/4=3 3/4
.But, you can tell that he multiplied 3/4 by 1/5, which is not right since you're suppose to do it by 5. But the answer is 3 1/2 gallon per minute.
mel-nik [20]3 years ago
4 0
He found out 1/5 of 3/4 instead of multiplying by 5
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hram777 [196]

Answer:

its the steepness of two numbers on a graph - measures the steepness of the line. (what a slope is)

 y=40x+10

Step-by-step explanation:

y=mx+b

6 0
4 years ago
Find the equation for the line that passes through (4, - 8) that has slope - 2. Give your answer in
NNADVOKAT [17]

Answer:

y+8=-2(x-4)

Step-by-step explanation:

point-slope form is y-y1=m(x-x1) where m is the slope, and (x1,y1) is a point.

We are given all of that information:

slope: -2

point: (4,-8)

substitute the numbers into the equation

y--8=-2(x-4)

we can make --8 to positive 8

so:

y+8=-2(x-4)

this is the equation in point-slope form

Hope this helps!

4 0
2 years ago
Sing acts are 5 min long and comedy acts are 3 min long. The show has 12 acts and last 50 min. How many singing acts and how man
ryzh [129]

Answer

so there are 7 singing acts and 5 comedy acts.

Step-by-step explanation:

Let x= number of singing acts.

Let y= number of comedy acts.

We will take x+y=12 as our first equation, as there are 12 shows in total. We will take 5x+3y=50 as our second equation as there are 50 total minutes, and singing acts are 5 mins and comedy acts are 3 mins.

We solve x+y=12

Y=-x+12

We know y=-x+12, so we will substitute that for the y in the second equation.

1. Substitute 5x+3(-x+12)=50

2. Distribute 5x-3x+36=50

3. Solve 2x+36=50

2x=14

X=7

Now that we have found x, we will find y by substitute the x in 5x+3y=50 with the value, 7, that we found for x.

5(7)+3y=50

35+3y=50

3y=15

Y=5

6 0
3 years ago
A fair sold a total of 3,300 tickets on friday and saturday. it sold 100 more on friday than on saturday.how many tickets did th
IgorLugansk [536]
On Saturday - x tickets
on Friday - (x + 100)
altogether
x+x+100=3300
2x=3200
x=1600
x+100=1600+100=1700
1700 on Friday

7 0
3 years ago
A rectangular prism is 5 meters long, 2 meters wide. amd 2 meters high. What is the suface area of this prism in square inches?
Triss [41]
Surface area of a prism=2(long x wide)+2(long x high )+2(wide x high)
Data:
long=5 m
wide=2 m
high=2 m

Surface area of this prism=2(5 m * 2 m)+2(5 m*2 m)+2(2 m*2m)
=2(10 m ²)+2(10 m²)+2(4 m²)
=20 m²+20 m²+8 m²
=48 m²

Answer: C 48 m²
8 0
3 years ago
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