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zlopas [31]
3 years ago
11

(x-1)²-25=0 Factor by using the difference between two squares

Mathematics
2 answers:
sesenic [268]3 years ago
8 0
The answer are x=-4, x=6. I guess
Ronch [10]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

A difference of 2 squares factors in general as

a² - b² = (a - b)(a + b)

(x - 1)² - 25 ← is a difference of squares

with a = x - 1 and b = 5, thus

(x - 1)² - 25

=(x - 1 - 5)(x - 1 + 5) = (x - 6)(x + 4), then

(x - 6)(x + 4) = 0

Equate each factor to zero and solve for x

x - 6 = 0 ⇒ x = 6

x + 4 = 0 ⇒ x = - 4

Solutions are x = - 4, x = 6

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The average life of an electric scooter is 12 years with a standard deviation of 1.5 years. The manufacturer replaces for free a
Dmitrij [34]

The guarantee which should be given by the manufacturer in years is; 0.405years

<h3>Percentages and Averages</h3>

Since the average life of a scooter is 12 years with a standard deviation of 1.5 years.

Hence, the maximum life of any electric scooter is 13.5 years.

On this note, to offer a guarantee with the intention to replace only 3% of the scooters;

We must evaluate 3% of 13.5 years as follows;

  • Guarantee offer = 3% of 13.5 years

  • Guarantee offer = (3/100) × 13.5

Guarantee offer = 0.405 years

Read more on percentages;

brainly.com/question/24304697

5 0
2 years ago
Chen is given the graph below. What type of graph is shown, and what is the growth factor? linear function; growth factor of 2 l
pentagon [3]

Answer:

linear function, growth factor of 4

Step-by-step explanation:

The graph has the shape of a straight line, so it is linear.

The graph starts at point (0, 0). It passes through point (1, 4).

slope = (y2 - y1)/(x2 - x1) = (4 - 0)/(1 - 0) = 4/1 = 4

The slope is 4. Growth factor is the same as slope for a linear function.

Answer:

3 0
4 years ago
Read 2 more answers
The mean weight of four members of the wrestling team is 160 pounds. If three of them have weights of 125, 183, and 169 pounds,
gavmur [86]

Answer:

The mean weight of four members of the wrestling team is 160 pounds.

Three of them have weights of 125, 183, and 169 pounds, the remaining one has weight a.

=> (a + 125 + 183 + 169)/4 = 160

=> a = 160 x 4 - 125 -183 - 169 = 163

=> Option C (163 pounds) is correct.

Hope this helps!

:)

7 0
4 years ago
Read 2 more answers
I DON'T UNDERSTAND THIS SOMEONE HELP!!
trasher [3.6K]
You're looking for common multiples.
4: 4, 8, 12, 16, 20, 24, ...
6: 6, 12, 18, 24, ...
Since he is on the same machines today, he will be on the same machines again in 12 days. 
6 0
3 years ago
I need help on this question ASAP
Kipish [7]
R>-6
Please correct me if I’m wrong
7 0
3 years ago
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