MATHEMATICS HIGH SCHOOL

Hurry The distance traveled by a sound wave through a substance is proportional to time. The graph shows this relationship for several substances. Which substances have a unit rate greater than 2 km/s?

Choose all answers that are correct.



A.
cork

B.
glass

C.
lead

D.
titanium
Hurry The distance traveled by a sound wave through a - 1

Answers

Answer 1
Answer: Glass and Titanium. Glass is because (10,40) (y over x) is 4 and Titanium is because (10,60) is 6 cork and lead are not since when dividing y over x it doesn't equal 2.

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1/2 x n = 1/3 what does n =
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What is a radius f a circle with diameter of
240mm

Answers

r=120 mm
diameter 240 
so your answer is 120mm
well if you have the diameter then this is simple.
the diameter divided by 2 is the radius..
so 240/2=120
so the radius of the circle should be 120

Find the slope and y ✨

Answers

Answer:

Y=3x

Slope: 3

Y int. (0,0)

Y=-2/3x-3

Slope: -2/3

Y int (0,-3)

Step-by-step explanation:

If g(x) = x2 − 4, find g(5).

Answers

Answer:

\boxed {21}

Step-by-step explanation:

Find g(5):

g(x) = x^(2) - 4

-Apply 5 for variable x to the equation:

g(5) = (5)^(2) - 4

-Solve the expression:

g(5) = (5)^(2) - 4

= 25 - 4

= \boxed {21}

Therefore, the final answer is 21.

Answer:

21

Step-by-step explanation:

5

How to solve x^4-33x^2+200=0

Answers

x^4-33x^2+200=0        (factor that out)
x^4-33x^2+200 -----> (x^2-8)(x^2-25)

new equation:
x^2-8=0     x^2-25=0            (solve for x for both equations)
   x^2=8         x^2 =25      

the x's are still squared so you have the square root both sides of the equations to get rid of the ^2:

x^2=8        x^2=25
\sqrt{ x^(2) } = √(8)    \sqrt{x ^(2) } = √(25)

x=2 √(2)   x=5

Which of the following is a solution of x2 − 10x = –36? negative 5 minus i square root of 10 5 plus i square root of 61 negative 5 minus i square root of 11 5 plus i square root of 11

Answers

x^2 - 10x + 36 = 0;
We use the quadratic formula: x = ( - b + or - i\sqrt{ -b^(2)+4ac })/ (2a);
We have a = 1; b = -10; c = 36;
Then, x = ( 10 + or -i√(44))/2 = 5 + or - √(11))/2 ;

Answer:

5 plus i square root of 11

Step-by-step explanation:

I got right on the test.

Is the relation a function? {(14, 15), (5, 7), (3, 10), (11, 1), (5, 8)} a. yes. b. no

Answers

In this relation we have two ordered pairs:
( 5, 7 ) and ( 5, 8 )
For x = 5 :  f ( x ) = 7 and also for x = 5,  f ( x ) = 8. This is not possible for a function.
Answer:
b ) No. The relation is not a function.

Answer:

B. no

The whole test

1. C

2. A

3. B

4. C

5. A

6. A

Hope this helps the ballers!

Step-by-step explanation:
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