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Ksivusya [100]
3 years ago
5

Need help!! algebra!!!

Mathematics
2 answers:
Llana [10]3 years ago
8 0

Answer:

Step-by-step explanation:

navik [9.2K]3 years ago
3 0

Answer:

The length of each side is (2a-5) units

Step-by-step explanation:

4a^2 - 20a +25

= (2a)^2 - 20a + (-5)^2

=(2a - 5)^2

(9a^2 - 16b^2)

= (3a)^2 - (4b)^2  this is the difference of two squares, the factors are therefore

= (3a + 4b) * (3a - 4b)

The dimensions of the rectangle are:

one pair of opposite sides are 3a + 4b

and the other pair of opposite side perpendicular to the first pair is 3a - 4b

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5. A car travels 30 miles in of an hour What is the average speed, in miles per hour of the car? ​
ELEN [110]

Answer:

60 mph

Step-by-step explanation:

I'm not sure if you meant 30 miles in half an hour, but if that's the case, your answer is 60 mph.  

There are two halves in an hour so

30 x 2 = 60

7 0
4 years ago
If one inch represents 12 feet, what dimensions would you use to make a scale drawing of a building 75 by 80 feet
viva [34]

Answer:

<u>864000</u>

Step-by-step explanation:

12 feet is one inch so you times the numbers 75x12 and 80x12. 900+960=864000.

3 0
4 years ago
In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer. i.Radhika answered
Mumz [18]

Step-by-step explanation:

number of correct answer is x and

number of wrong answer is y

according to question

In the case of Radhika

5x-2y=30

x=10

y=10

In the case of Jay

5x-2y=-12

x=4

y=16

incorrect answer by Radhika is 10 and by jay is 16

7 0
4 years ago
What is the answer to this very difficult math question
PIT_PIT [208]
Its already filled in????
7 0
3 years ago
Read 2 more answers
A rectangular prism has a length of
laiz [17]

Answer:

Its volume is 2 times the original volume.

Step-by-step explanation:

It cant be the first 2 because you are making it bigger, not smaller. and it cant be the last one because you are only doubling one of the parts.

7 0
3 years ago
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