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insens350 [35]
2 years ago
10

a room's floor has a width tht is 5 meters shorter than its length. if the perimeter of the floor is 4y+1 meters, can u solve fo

r its length? Explain y and show ur work.
Mathematics
1 answer:
ira [324]2 years ago
6 0

Answer: No, we cannot find for its length as we can see that variables got cancelled so, we are not able to find any value for 'y'.

Step-by-step explanation:

Since we have given that

Let length of room's floor be y

Let width of a room's floor be y-5

Perimeter of room's floor be 4y+1

As we know the formula for " Perimeter of rectangle ":

Perimeter=2(Length+Width)\\\\Perimeter=2(y+y-5)\\\\4y-1=2(2y-5)\\\\4y-1=4y-20\\\\4y-4y=-20+1\\\\0\neq -19

No, we cannot find for its length as we can see that variables got cancelled so, we are not able to find any value for 'y'.


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At the convenience store, a 12 pack of Dr. Pepper costs $3.96. How much does each can cost?​
AveGali [126]

Answer:

33 CENTS FOR EACH CAN

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A young person decides to put aside some money for retirement by putting $1,000 in a 30-year savings bond that pays 3.0% simple
Pavel [41]

Answer:

2427.26 $

Step-by-step explanation:

Just use this formula when you have such type of problems:

N = N° (1 + %)^t

Where N = final amount

           N°= initial amount

           t = peroid of time

Now let's solve:

N = 1000(1 + 0.03)^30

N = 2427.26

5 0
2 years ago
Someone help me with this question please.
grandymaker [24]
It’s 27 because u multiple the first 2 number and it’s a negative then add the rest to it
5 0
3 years ago
The teacher separated her class of twenty-eight students into two groups. One group has 4 more than twice as many students as th
wariber [46]
4+2x = x (x = student in smaller group)

4 + 2x + x = 28 (total # of students)
4+ 3x = 28
3x = 24
x = 8
8 students in the smaller group 
4 + 2(8) = 20 students in the larger group
8 0
3 years ago
Please help Explanation will be appreciated thanks,
Genrish500 [490]

Answer: A; 6.3%

Step-by-step explanation:

Problem 1

For the first problem, we first want to find y so that we can plug it into the expression.

We can use elimination method for the system of equations to solve.

3x+3y=21

3x-y=5

We subtract both equations to eliminate x.

4y=16                                        [divide both sides by 4]

y=4

Now that we know y, we can plug it into the expression.

\frac{4}{2} -3                                         [divide]

2-3                                         [subtract]

-1

We know that the answer is A.

--------------------------------------------------------------------------------------------------------

Problem 2

For the second problem, we need to know how to calculate percent error. The formula for precent error is \frac{|measured-exact|}{exact} *100%. We know that the exact value is 80 because the buyer was supposed to given 80. 75 is the measured value because that was what the buyer was given.

\frac{|75-80|}{80} *100%                               [subtract]

\frac{|-5|}{80} *100%                                   [solve absolue value]

\frac{5}{80} *100%                                     [divide]

0.0625*100%                               [multiply]

6.25

Since the problem said to round to one decimal place, we know that the answer is 6.3%.

4 0
2 years ago
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