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3 years ago

F(x) = 4x - 4, g(x) = - 3x² + 2x - 3, and h(x) = - 2x^2- 5, find f(-4)

Mathematics

1 answer:

tia_tia [17]3 years ago

4 0

Answer:

-20

Step-by-step explanation:

f(x) = 4x - 4

f(-4) = 4*-4 - 4

f(-4) = -16 - 4

f(-4) = - 20

f(x) shares many of the properties of y so you could think of this question as y = 4x - 4
The difference is as in this question that f(-4) conveys the message that wherever you see an x on the right side of the equation, you put -4 in it's place.
That's what was done on the second step.

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The box plots show the weights, in pounds, of the dogs in two different animal shelters.

zimovet [89]

*see attachment below for the box plots that is being referred to

Answer:

*The median weight for shelter A is greater than that for shelter B

*The data for shelter B are a symmetric data set

Step-by-step explanation:

Let's take each stated option and examine the box plot to see which is TRUE or NOT.

OPTION 1: "The median weight for shelter A is greater than that for shelter B."

The median for shelter A = 21,

Median for shelter B = 18

Median weight for shelter A (21) is greater than that for shelter B.

This statement in this option is TRUE.

OPTION 2: "The median weight for shelter B is greater than that for shelter A."

Median for B (18) < median of A (21)

This statement in option is NOT TRUE.

OPTION 3: "The data for shelter A are a symmetric data set."

This is NOT TRUE because the length of both whiskers are unequal and also, the box is not divided equally. One side is longer than the other.

OPTION 4: "The data for shelter B are a symmetric data set."

This is TRUE because the length of both whiskers are relatively equal, and also, the rectangular box is divided equally.

OPTION 5: "The interquartile range for shelter A is 8"

This is NOT TRUE.

IQR = Q3-Q1

IQR for shelter A is approximately = 28-17 = 11

5 0

3 years ago

1 - (9 – 4) : 5 =<br> Please someone help

Norma-Jean [14]

Answer:

-4 = 5

Step-by-step explanation:

9-4=5

1-5=-4

-4:5

3 0

4 years ago

How to solve<br>2(x+4)=2x+5

Gnesinka [82]

Step-by-step explanation:

2x+8=2x+5

2x-2x=15-8

0x=7

7 0

3 years ago

Simplify cosθ+sinθ•tanθ

ioda

I can’t really read it it’s blurry

4 0

4 years ago

A manager of a grocery store wants to determine if consumers are spending more than the national average of $150 with a standard

Semmy [17]

Answer:

A.) The manager calculated mean and not standard deviation

B.) Standard deviation should be calculated with the use of formula.

Step-by-step explanation:

A.) The assumption that his customers do spend more than the national average is wrong because the standard deviation is not calculated and mean cannot be used as a substitute for standard deviation.

B.) Standard deviation tells us how value obtain from group measurement deviates from the average value or expected value of each item of observations.

When standard deviation is low, this show that the value is very close to the expected value or the average value.

If the national average value = $150 and average customer spends $160.

Deviation = 160 - 150 = 10

This is lower than $30

Or better still, the manager should make use of standard deviation formula. Which is the square root of variance.

8 0

3 years ago