Which function will have a y-intercept at -1 and an amplitude of 2?
which function will have a y-intercept at -1 and an - 1

Answers

Answer 1
Answer: The first and 3rd choices are just sin and cos waves, with amplitude of 1 .
So it has to be the 2nd or 4th choice.

The y-intercept is the point on the graph where x=0.
So if the y-intercept is -1, that just means that  f(0)=-1 .
So let's test the two choices:

                                   f(x) = -2 sin(x) - 1

                                   f(0) = -2 sin(0) - 1
sin(0) = 0  so
                                   f(0) = -2 (0)    - 1 .
That looks like it works.
Just to be sure, let's check the other possible choice.

                                  f(x) = -2 cos(x) - 1

                                 f(0) = -2 cos(0) - 1

cos(0) = 1     so         f(0) = -2 (1)      - 1  =  -3 .  

Beautiful !  The y-intercept of choice-2 is -1,
and the y-intercept of choice-4 is  -3.  The answer is choice-2.
Answer 2
Answer:

Answer:

the answer is b

Step-by-step explanation:

Im just typing this so it knows that I properly explained


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What is the awnser to r(−2)= ?

Answers

Answer:

r=2 i think

Step-by-step explanation:

Answer:

Hi there!

If there was supposed to be an attached problem to fill -2 into, PLEASE ATTACH IT!

If not, x= -2 in r(-2)

At a cost of $2.50 per square yard, what would be the price of carpeting a rectangular floor, 18 ft x 24 ft?

Answers

Answer is: $120

(18ft x 24ft) = 432 square feet

1 yard = 3 feet
1 square yard =
(1yd * 1yd) =(3ft * 3ft) = 9 square feet

(432 ft^2)/(9 ft^2 per yard) = 48 square yards

(48 square yards)*($2.50 per yard) = $120


Since there are 5,280 feet in one mile and 3.3 feet in one meter, how many meters per second are equivalent to 60 miles per hour?a.) 26 (2)/(3) meters per second
b.) 198 meters per second
c.) 266 (2)/(3 (2)/(3) ) meters per second
d.) 290 (2)/(5)
please explain.

Answers

Given:
1 mile = 5280 feet
1 meter = 3.3 feet

convert 60 miles per hour to meters per second

60 miles to meters

60 miles x 5280ft x 1meter = (60*5280m)/3.3 = 316800m/3.3
                  1 mile    3.3ft
= 96,000 meters

1 hour to seconds

1 hour x 60 minutes x 60 seconds =   1 * 60 * 60sec = 3600 seconds 
                1 hour            1 minute

unit rate: meters per second

96000 meters ÷ 3600 seconds = 26 2400/3600 
simplify 26 2400/3600 ⇒ 26 2/3 meters per second

2400 ÷ 1200 = 2
3600 ÷ 1200 = 3

If an object has a mass of 50 kilograms, what would it weigh on Uranus, where the acceleration due to gravity is. 10.5 meters/second2?

Answers

Mass of n object : m = 50 kg.
On Uranus : g ( Uranus ) = 10.5 m/s²
Weight = Mass   x  Acceleration due to gravity
Weight = 50 kg · 10.5 m/s² = 525 kgm/s² = 525 N

The length of a text messaging conversation is normally distributed with a mean of 2 minutes and a standard deviation of .5 minutes. What is the probability that a conversation lasts longer than 3 minutes?0.043351
0.063748
0.02275
0.095424

Answers

Let x be a random variable representing the length of a text messaging conversation, then
P(x > 3) = 1 - P(x < 3) = 1 - P(z < (3 - 2)/0.5) = 1 - P(z < 2) = 1 - 0.97725 = 0.02275

The probability that a conversation lasts longer than 3 minutes is 0.02275.

How to Calculate the Probability

Given:

  • Mean= 2 minutes
  • Standard deviation= 0.5 minutes

We would use x to denote the random variable.

Next to find the probability that a conversation lasts longer than 3 minutes is:

P(x > 3) = 1 - P(x < 3)

1 - P(z < (3 - 2)/0.5)

= 1 - P(z < 2)

= 1 - 0.97725

= 0.02275

Read more about probability here:

brainly.com/question/24756209

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How are the two angles below related. Drawing not to scale. 45 degrees and 135 degrees

Answers

Answer:

The answer to your question is A. supplementary


The two angles, of 45 and 135 degrees respectively, are related because they are supplementary — this means their total sum adds up to 180 degrees. Complementary angles have a sum of 90 degrees.