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defon
2 years ago
5

(Please help, quickly if possible.)

Mathematics
1 answer:
Step2247 [10]2 years ago
8 0

A scale factor is a contracting scale such that x < 1, where x is the scale factor.

For example, if the scale factor x is less than 1, then it must be decreasing in size, and thus be contracting in size.

But, if the scale factor is greater than 1, then it is expanding in size and increasing.

1) -5 is expanding. It is greater than one.

2) -1/4 is contracting. It is less than one.

3) 3.5 is expanding. It is greater than one.

4) 6/7 is contracting. It is less than one.

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Select the correct answer.
kompoz [17]

Given:

The function is

f(x)=4x+9

Domain = {-4, -2, 0, 2}

To find:

The range of the given function for the given domain.

Solution:

We know that domain is the set of input values and range is the set  of output values.

We have, f(x)=4x+9 and domain = {-4, -2, 0, 2}.

Putting x=-4 in the given function, we get

f(-4)=4(-4)+9

f(-4)=-16+9

f(-4)=-7

Putting x=-2 in the given function, we get

f(-2)=4(-2)+9

f(-2)=-8+9

f(-2)=1

Putting x=0 in the given function, we get

f(0)=4(0)+9

f(0)=0+9

f(0)=9

Putting x=2 in the given function, we get

f(2)=4(2)+9

f(2)=8+9

f(2)=17

The output values are -7, 1, 9, 17. So, the range of the function f(x) for the given domain is {-7, 1, 9, 17}.

Therefore, the correct option is D.

8 0
3 years ago
A data set has 40 data points. Enter values to answer each of the questions below.
alukav5142 [94]
When the number of data points is odd the formula to find the Ranking of the Median is (n+1)/2, When the number of data points is even the ranking of the Median will be the AVERAGE of n/2 + n/2 +1, where n is the number of data points.

In our case the ranking of the Median is the average (20+21)/2 = 20.5.

1- How many points are below the Median =20

Lower half = 20, Upper half = 20 & Median = 20.5 (Don't forget Median is the ranking of data points).

Again the 1st Quartile is at 10.5, so 10 data points are below the 1st Quartile

and 20 points are between Q1 & Q3

5 0
3 years ago
Read 2 more answers
I don't understand ÷ fractions
Reptile [31]
Ok. so, you have a fraction. lets say it is, 5/20. and the other, is. 2/5. flip the first one, and multiply. so your answer would be, 25/40. hope this helps.
7 0
3 years ago
What is the value of cos theta in the diagram?
Dovator [93]
3/5, im working on the same stuff
diameters of circles and stuff no promblamo lol<span />
3 0
4 years ago
Read 2 more answers
Given f(x) = ax2+ bx + c, where a = 3and b = 18, determine the line of symmetry x = C.Enter the value of C
tatyana61 [14]

Answer:

c=y-3x^2-18x

axis of symmetry:

X=-3

Step-by-step explanation:

4 0
3 years ago
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