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Ivan
2 years ago
5

HELP PLZ

Mathematics
1 answer:
Lera25 [3.4K]2 years ago
3 0

Answer:

the answer is 28 for A the answer for B is -5 for A, 15 for B, and -6 for C

Step-by-step explanation:

You might be interested in
Which equation has roots of 3plus or minus sqare rt 2?
vichka [17]

Answer:

Option D is correct.

The equation with roots 3 plus or minus square root 2 is x² - 6x + 7

Step-by-step explanation:

The roots of the unknown equation are

3 ± √2, that is, (3 + √2) and (3 - √2)

The equation can then be reconstructed by writing these roots as the solutions of the quadratic equation

x = (3 + √2) or x = (3 - √2)

The equation is this

[x - (3 + √2)] × [x - (3 - √2)]

(x - 3 - √2) × (x - 3 + √2)

x(x - 3 + √2) - 3(x - 3 + √2) - √2(x - 3 + √2)

= x² - 3x + x√2 - 3x + 9 - 3√2 - x√2 + 3√2 - 2

Collecting like terms

= x² - 3x - 3x + x√2 - x√2 - 3√2 + 3√2 + 9 - 2

= x² - 6x + 7

Hope this Helps!!!

6 0
3 years ago
Evaluate (-12)(-2) ^2
vazorg [7]

Answer:

- 48

Step-by-step explanation:

by PEDMAS, we evaluate the exponent first before the multiplication

(-12)·(-2)²  

= (-12)·(4)

= - 48

7 0
3 years ago
What is this answer?
shusha [124]

Answer:

a

Step-by-step explanation:

Because I did this already

4 0
2 years ago
Read 2 more answers
-3j - (-4) over -6 = 12 j= ? ​
babymother [125]

Answer:

j =76/3

Step-by-step explanation:

-3j -  -4

------------------ = 12

-6

Multiply each side by -6 to clear the fraction

-3j +4

------------------ * -6 = 12 *-6

-6

-3j +4 = -72

Subtract 4 from each side

-3j +4-4 = -72 -4

-3j = -76

Divide each side by -3

-3j/-3 = -76/-3

j = 76/3

5 0
3 years ago
Which is what is the answer that estimates the product of 3.09×304.87
Feliz [49]

Answer:

900

Step-by-step explanation

That would be  3 * 300 = 900

8 0
3 years ago
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