6. How can you use the value of x to show that KL = 15?

Answers

Answer 1

Answer:

Answer:

wherever the variable (x) is, replace the variable with whatever value it has and solve the equation.

Step-by-step explanation:

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marsha wants to determine the vertex of the quadratic function f(x) = x2 – x 2. what is the function’s vertex? (1, 1) (1, 3) (1/2,3/2 (1/2,7/4)

Answers

f(x) = x^2 - x + 2
f(x) = x^2 - x + 1/4 + 2 - 1/4
f(x) = (x - 1/2)^2 + 7/4
Therefore, vertex = (1/2, 7/4)

So A would be your answer

Which of these number is irrational?the square root of 36
the square root of 49
the square root of 13
the square root of 121

Answers

The answer is the square root of 13 because it is the only one that gets square rooted and does not come out even. Hope this helped.

The square root of 36 is 6, the square root of 49 is 7, the square root of 121 is 11. So the answer is the square root of 13.

Is 9 rational or irrational?

Answers

Answer:

9 is a rational number.

Step-by-step explanation:

Answer:

irrational

Step-by-step explanation:

How the number 9 is irrational is that irrational numbers are numbers that are not expressed as fractions or decimals. So some examples of irrational numbers is 1,2,6,22,12,9

can I get brainlest?

Your record bicycle pace along a favorite trail is 16 mph. On a recent ride, you traveled the 25 mile route in a time of 90 minutes. What was your average speed? Did it break your record pace?

Answers

Remember that d = rt or distance = rate times time. You want your answer in miles per hour so convert 90 minutes to 1.5 hours. Now plug in your values:
25mi = r*1.5hrs.
r = 25/1.5 = 16.667mph.

This is greater than 16mph so you did break your record pace.

Answer:

You did break your pace. You were able to travle about .7 miles per hour faster.

Step-by-step explanation:

Speed: Distance/time

Speed: 25/90

Speed: 16.6667 miles per hour

Speed: 16.7

Solve the following system using the substitution method.9x + 8y = 15
-5x + 12y = -107

(x, y) = ( , )

Answers

x = (15 - 8y)/9

-5[(15 - 8y)/9] + 12y = -107

(-75/9) + (40/9) + 12y = -107

y = -8.59

x = [15 - 8(-8.59)]/9

x = 9.3
(x,y) = (9.3, -8.59)

Hal is asked to write an exponential function to represent the value of a $10,000 investment decreasing at 2% annually. What multiplicative rate of change should Hal use in his function?

Answers

Answer
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98
=9.8×10⁻¹

Explanation
The investment of $10,000 decreases by 2% every year. So the following year is usually (100 - 2)=98% of the previous year. This is a geometric progression.
In this case the first term = 10000
The second term = 98% × 10000 = 9800.
The common ratio = 9800/10000=49/50
The multiplicative rate of change that should be in Hal’s function = 49/50=0.98.
The equation of the exponential rate would be;
10,000ₓ0.98ⁿ.
where n is the number years.

Answer: B

Step-by-step explanation:

0.98

E2020

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