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OverLord2011 [107]
3 years ago
13

How did they get this

Mathematics
2 answers:
alexandr1967 [171]3 years ago
7 0
It's only true if  x=2  and  y= -1 .
katrin2010 [14]3 years ago
3 0
Somewhere in the text, it must say that x = 2 and y = -1 or else, the values just seem made up out of thin air. 
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1. What units cannot be used to measure weight?<br> A. ton<br> O B. inch<br> O C. pound<br> D. ounce
lys-0071 [83]

Answer:

B. Inches

Step-by-step explanation:

Because it measures the length of something, Not the weight.

8 0
3 years ago
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Value of x in figure shown below<br> a.22<br> b.20<br> c.45<br> d.80
Fiesta28 [93]

Answer:

A - 22

Step-by-step explanation:

This is because when you add 90 and 68 you get 158. There are 180 degrees in a triangle so you do 180-158 to get 22.

4 0
3 years ago
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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
Alexxx [7]

(x - 5i√2)(x +5i√2)

given the roots of a polynomial p(x), say x = a and x = b

then the factors are (x - a)(x - b)

and p(x) is the product of the factors ⇒ p(x) = (x - a)(x - b)

here x² + 50 = 0 ⇒ x² = - 50 → ( set = 0 for roots)

take the square root of both sides

x = ± √-50 = ±  √(25 × 2 × -1) = √25 × √2 × √-1 = ± 5i√2

The roots are x = ± 5i√2

thus the factors are ( x - ( - 5i√2)) and (x - (+5i√2))

x² + 50 = (x + 5i√2)(x - 5i√2)


8 0
3 years ago
Help me on problem 15 please and asap
Dovator [93]
What is it , what is your question


6 0
3 years ago
Read 2 more answers
What is the solution to this system of equations?
Eduardwww [97]

Answer:

x = -2, y = 3

Step-by-step explanation:

Given equations are,

4x + 5y = 7 ---------(1)

3x - 2y = -12 ----------(2)

Multiply equation (1) by 3

12x + 15y = 21 ------(3)

Multiply equation (2) by (-4)

-12x + 8y = 48 --------(4)

Now add equations (3) and (4),

(12x + 15y) + (-12x + 8y) = 21 + 48

(12x - 12x) + (15y + 8y) = 69

23y = 69

y = 3

From equation (2),

3x - 2(3) = -12

3x - 6 = -12

3x = 6 - 12

x = -2

Therefore, x = -2 and y = 3 will be the answer.

4 0
3 years ago
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