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solmaris [256]
3 years ago
12

Find the perimeter of the parallelogram with these vertices. (4,7), (-3,1), (4,1), (-3,-5) Give an exact answer (not a decimal a

pproximation). Simplify your answer as much as possible.
Mathematics
1 answer:
Stels [109]3 years ago
7 0

Answer: 4,1 read carefully

Step-by-step explanation:

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If 2a+ 2/a =4, what is the value of 2a^2− 2/a^2 ?
aliina [53]

Answer:

0

Step-by-step explanation:

2a+ 2/a =4

Multiply each side by a to clear the fraction

a( 2a+ 2/a) =4*a

Distribute

2a^2 +2 = 4a

Subtract 4a from each side

2a^2 -4a +2 = 4a-4a

2a^2 -4a +2 =0

Divide by 2

2/2 a^2 -4a/2 +2/2 =0/2

a^2 -2a +1=0

Factor

(a-1) (a-1) =0

Using the zero product property

a=1

2a^2 -2/a^2

2(1)^2 -2/1^2

2-2

0

5 0
3 years ago
Find the solution to the system of equations
Neko [114]

Answer:

x=1

y=-4

Step-by-step explanation:

Since -x-3=y subsitue that in at the top equation

- x - 3 =  - 7x + 3

- x =  - 7x + 6

6x = 6

x = 1

Plug x=1 back into the equation to solve for y.

y =  - 7(1) + 3

y =  - 4

3 0
3 years ago
3/5 of a number decreased by one is 23. What is the number?
garri49 [273]
You can set up an equation based off of the information given:

x represents the unknown number

3/5x - 1 = 23

add 1 to both sides to isolate the 3/5x

3/5x = 24

divide both sides by 3/5 to solve for x

x = 120/3

120/3 can be simplified into 40

Final answer: x = 40
5 0
3 years ago
Consider this sphere with a diameter of 5 m.
abruzzese [7]

Answer: only C and E

Step-by-step explanation:

4 0
3 years ago
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Lily's flight is delayed for 180 minutes.<br> How many hours is this?<br> 1 hours?
Elina [12.6K]
180 minutes is 3 hours.
8 0
3 years ago
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