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Alex777 [14]
3 years ago
9

8. The square of a number decreased by 3 times the number is 28. Find all

Mathematics
1 answer:
Llana [10]3 years ago
3 0
The answer is 7 i think
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HIGHSCHOOL GEOMETRY
Ad libitum [116K]

Answer:

B = 75°

Step-by-step explanation:

Using the Sine rule:

a / sin A = b / sin B = c / Sin C

a / sin A = b / sin B

20 / sin 48 = 26 / sin B

Cross multiply :

Sin B * 20 = sin 48 * 26

Sin B = (sin 48 * 26) / 20

Sin B = 0.9660882

B = sin^-1(0.9660882)

B = 75.036

B = 75°

6 0
2 years ago
How can you write a fraction as a decimal?
Sedbober [7]
You take the numerator and divide that by the denominator
3 0
2 years ago
If an exam is 75 questions long, a 100% being the highest grade, and 79% and below is failing, how many questions can you miss i
natita [175]
It's a C + 

You did a well! 

Hope this helped!
6 0
3 years ago
Read 2 more answers
Which is it? , 30 points
goldenfox [79]

Answer:

It's choice B.

Step-by-step explanation:

Let's look the one you have chosen (A):

f(x) =  x - 2/ 7  + 8

x-2 / 7 = f(x) - 8

x- 2 = 7(f(x) - 8)

x = 7(f(x) - 8) + 2

The inverse)= 7(x - 8) + 2

So it's not A.

B.  f(x) = 5(x/4) - 3

5x / 4 = f(x) + 3

5x = 4(f(x) + 3)

x = 4(f(x) + 3 / 5

So the inverse is  4(x + 3) / 5

So it is B.

5 0
3 years ago
Read 2 more answers
4. Write the range of this function.<br>(4,12) (1,3) (3,9) (5,15)​
forsale [732]
Range is all real numbers
(-infinity, positive infinity)
4 0
3 years ago
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