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alina1380 [7]
3 years ago
10

Evaluate f(x)= -x2 + 1 for x=-3

Mathematics
1 answer:
fomenos3 years ago
3 0

Answer:

f(x)= 7

Step-by-step explanation:

1. Multiply the -1(the negative sign in front of the x) with the x=-3 to get 3

2. Multiply the 3 and the 2 to get 6

3. Add the 6 and the +1 to get 7

f(x)= 7

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What’s the radius of a circle with the circumference of 37.68 feet
Lina20 [59]

Answer:

r≈6ft

Step-by-step explanation:

Using the formula

C=2πr

Solving forr

r=C

2π=37.68

2·π≈5.99696ft

pls mark as brainliest

7 0
3 years ago
If the measure of an acute angle is represented by x, then the measure of its complement
Luba_88 [7]

Answer:

always true

Step-by-step explanation:

complement equals that angle plus another one adds to 90. If you know that it's less than 90 degrees, then you subtract it from 90 to get the other angle which is the complement. Hope this helps!

8 0
3 years ago
How do you do this? Please give explanation
Komok [63]

Answer:

  2, 1, 3, 4, 6, 5

Step-by-step explanation:

The rate of change of function f(x) on an interval [a, b] is defined as ...

  average rate of change = (f(b) -f(a))/(b -a)

For the function h(x) = 2^-x, this will be ...

  arc = (h(b) -h(a))/(b -a) = (2^-b -2^-a)/(b-a) = (2^-a)(2^(a-b) -1)/(b -a)

__

1. For the interval [0, 2], the average rate of change is ...

  arc = (2^-0)(2^(0-2) -1)(2 -0) = (1/4 -1)/2 = -3/8 = -0.375

  1 goes in the 2nd answer blank

2-6. For the other intervals, it is convenient to let a calculator or spreadsheet compute the values. The average rates of change are shown in the attachment.

8 0
2 years ago
Question 22 mary has scored 79 , 91 , 64 , 65 , and 71 on her previous five tests. what score does she need on her next test so
steposvetlana [31]
So u want to add all of the previous scores together and divide them by the number of scores [i.e: 79+91+64+65+71= 370 then u divide. 370/5 (since there are 5 sets of scores) which gets you 74.] Then it's kind of a guess and check from there.
Answer: 92
5 0
3 years ago
Tessa is cooking steak for her family. She wants to be sure the steak has an internal temperature of at least 160 degrees Fahren
Over [174]

Answer:

<u>Population : all the steaks Tessa can cook</u>

<u>Parameter : minimum internal temperature of 160 degrees Fahrenheit</u>

<u>Sample : two random thermometer readings</u>

<u>Statistic : minimum sample reading of 165 degrees Fahrenheit</u>

Step-by-step explanation:

Let's recall the definitions of these statistical concepts and match it with the information that were provided to us:

  • Populations can be the complete set of all similar items that exist, in our case, all the steaks that Tessa can cook.
  • Parameter is is a value that describes a characteristic of an entire population, such as the minimum temperature of the steaks Tessa is cooking in Fahrenheit degrees.
  • Sample is a subset of the population, in our case, the two random readings of the thermometer Tessa did.
  • Statistic is a characteristic of a sample, for our problem, it's the minimum reading of 165 degrees Fahrenheit.
3 0
3 years ago
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