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Keith_Richards [23]
2 years ago
6

Which of the following is an extraneous solution of √4x+41 = x+5?

Mathematics
1 answer:
dolphi86 [110]2 years ago
7 0

Answer:

x=-8

Step-by-step explanation:

on squaring both sides

either x-2=0  or  x+8=0

either x=2 or x=-8

Putting x=2 in original equation, we get

7=7 hence, it is not an extraneous solution

Putting x=-8 in original equation

i.e. 3=-3

Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)

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A parking lot covers 32,420 square feet .what id its area to the nearest thousand feet
Mademuasel [1]

Answer: 32,000

Step-by-step explanation:

the thousands place (1000) is the fourth number to the left of the decimal, so round that one either up or down based on the number just one spot closer to the decimal, in this case, the hundreds place (100).

so we have 32,420

we can ignore the numbers that are going to become zeros as a result of the rounding . .

32,400

let's round 32,XXX either up or down based on the value in the hundreds place. if that value is 5 or greater, than we round up. if it is less than 5, than we round down.

4 is in the hundreds place, so we round down

32,000 is the answer

Hope this helps!!! Good luck!!! ;)

6 0
3 years ago
What is the measure of (2x+94) = (8x+10)
Anna [14]
I subtract 2x  to 8x that is equal to 6x; then I subtract 10 from right to left. So 94-10 equal 84. Now you got 6x=84, divide 6 both side and you got the answer. 
 
The answer is x= 14

7 0
3 years ago
What is the 5th term of the geometric sequence 3/20,3/2,15...?
puteri [66]
Common ratio, r = (3/2)/(3/20) = 10.

3/20,   3/2,  15, 

4th term = 15*10 = 150

5th term = 150*10 = 1500

5th term = 1500
7 0
2 years ago
Plz can u answer the questions I have attached
vodomira [7]

Answer:

For the first question it is 2.

2 x 2 = 4

5 x 2 = 10

4 + 10 - 14 = 0

The second question is -2

-2 x -2 = 4

5 x -2 = -10

4 + -10 + 6 = 0

Hope this helps

Step-by-step explanation:

4 0
3 years ago
If a cylinder has a height of 10cm and a radius of 2.5cm then whats the surface area and the volume?
BlackZzzverrR [31]

Answer:

A≈196.35cm

Step-by-step explanation:

3 0
3 years ago
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