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MaRussiya [10]
3 years ago
9

Factorise: x^{2} -49

Mathematics
1 answer:
nignag [31]3 years ago
7 0

Answer:

{x}^{2}  - 49 = 0  \\  {x}^{2}  = 49 \\ x  = \sqrt{49}  \\ x = 7

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A dentist has 400 male and female patients that range in age is from 10 years old to 50 years old and up. What is the experiment
Lena [83]

Answer:

1/8

Step-by-step explanation:

A dentist has 400 male and female patients that range in age is from 10 years old to 50 years old and up. What is the experimental probability that the next patient will be female and in the age range of 22 through 39?

                      10-21            22-39           40-50            50+

Male                44                 66                32                 53

Female            36                 50                45                 74

There are 400 male and female patient in total

there 400 possible outcome

Total number of possible outcome = 400

There are 50 females in 22-39 range and thus there are 50 favourable outcome

The probability is the number of favourable outcome divided by the number of possible outcome

P=\frac{50}{400} \\\\= \frac{1}{8}

= 0.125

=12.5%

4 0
3 years ago
Simplify -9/6 divided by 3/-2
Keith_Richards [23]
When you have divide just flip second fraction and

change divide to multiple (3/-2)

So it will be, - 9/6 * - 2/3

It equal to 1
3 0
3 years ago
Read 2 more answers
The distance from town a to town b is 5 miles and the distance from town b to town c is 4 miles. which of the following could No
Radda [10]
A. 1 because a to b is 5 miles and b to c is 4 miles so it couldn't be 1 mile
6 0
3 years ago
Nina graphs the function y=⌊x⌋ to learn the properties of the parent floor function.
BabaBlast [244]

Answer:

  5

Step-by-step explanation:

For positive numbers, the floor function y = ⌊x⌋ gives the integer portion of the number.

  ⌊5.7⌋ = 5

5 0
3 years ago
Please help!!! I would like an explanation along with your answer. Thanks
Korvikt [17]

Answer:

x = 12/13

BC = 140/13

Step-by-step explanation:

If A is the mipoint of BC, then AB is half of BC.

AB = BC / 2

8x − 2 = (3x + 8) / 2

16x − 4 = 3x + 8

13x = 12

x = 12/13

BC = 3x + 8

BC = 3 (12/13) + 8

BC = 36/13 + 104/13

BC = 140/13

4 0
4 years ago
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