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o-na [289]
2 years ago
9

If x+y = 12 and xy = 14, find the value of (x2 + y2).

Mathematics
2 answers:
Strike441 [17]2 years ago
7 0

Answer:

24

Step-by-step explanation:

If x+y=12, x2+y2 must be double this. 12×2=24

11Alexandr11 [23.1K]2 years ago
3 0

Answer:

Substitute x + y = 12 and xy = 14 in the above expansion, we get, Therefore, the value of is equal to 116.I think

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The blue segment below is a diameter of O. What is the length of the radius of the circle?
nexus9112 [7]

Answer: Option D :3.85 units.


Step-by-step explanation: Diameter is the longest chord of any circle . It is a straight line passing through the center of the circle and touches the circle at two points. Radius is a line  drawn from the center of circle to the circumference. Radius is half of diameter.In the given figure the blue line is diameter  .The diameter is the blue line which equals 7.7 units.Radius is half of diameter .Radius = 7.7÷2=3.85 units.

Option D is the right answer.


8 0
3 years ago
Read 2 more answers
Find f (2b^2) for (x)=x^2-4x
BlackZzzverrR [31]

Answer:

A

Step-by-step explanation:

We are given the function:

f(x) = x^2 - 4x

And we want to find:

\displaystyle f(2b^2)

Substitute:

\displaystyle f(2b^2) =(2b^2)^2 -4(2b^2)

And evaluate:

\displaystyle \begin{aligned}  f(2b^2) &=(2b^2)^2 -4(2b^2) \\ &=(4b^4) +(-8b^2) \\ &= 4b^4 - 8b^2 \end{aligned}

In conclusion, our answer is A.

7 0
3 years ago
A triangle has side lengths of 12 cm and 35 cm and 37 cm. Classify it as acute, obtuse or right
Lapatulllka [165]
This triangle would be acute none of the angles are greater than or equal to 90.
4 0
3 years ago
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What is the slope of the line?
KIM [24]

Answer:

Slope = -\frac{1}{3}

Step-by-step explanation:

6 0
3 years ago
Which equation can be solved using only natural numbers
Ad libitum [116K]

Answer:

C

Step-by-step explanation:

Natural numbers are numbers which are positive whole numbers greater than 0. This includes 1, 2, 3, ...etc.

To determine, solve each equation.

A. x=0

B. x = 1/3

C. x=3

D. x=-4, 4

Only C is a natural number.

4 0
3 years ago
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