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egoroff_w [7]
3 years ago
9

What is the range of the function f(x)=−7x+2 with a domain of {−3, 0, 11}

Mathematics
1 answer:
lesantik [10]3 years ago
5 0

Answer:

{-75, 23)

Step-by-step explanation:

The range is y value, whereas domain is x value. If you were to substitute x for -3, and x for 11, you would get the highest and lowest possible y values for the set. Therefore, the answer is {-75, 23}

Hope this helps!

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Round 527 to the nearest hundred
podryga [215]
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3 years ago
The length of a photograph is 1 cm less than twice the width. The area is 91cm^2. find the width and length.
maksim [4K]

Answer:

Width=6.5 cm

Length=12 cm

Step-by-step explanation:

Step 1: Express the lengths and widths

Width=w

Length=l, but 1 cm less than twice the width=(2×w)-1=2 w-1

Step 2: Solve for the length and width

A=L×W

where;

A=area of the photograph

L=length of the photograph

W=width of the photograph

In our case;

A=91 cm²

L=2 w-1

W=w

91=(2 w-1)w

2 w²-w=91

2 w²-w-91=0, is a quadratic equation

solve for w

w={-1±√(-1²-4×2×-91)}/(2×2)

w=(-1±27)/4

w=(27-1)/4=6.5, or (-1-27)/4=-8

Take w=6.5 cm

L=(2×6.5)-1=13-1=12 cm

Width=6.5 cm

Length=12 cm

6 0
3 years ago
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Vera_Pavlovna [14]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Area of a triangle 36 ft. By 41 1/2 ft.?
ziro4ka [17]
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7 0
3 years ago
How do u figure out the area of a rectangle ​
ELEN [110]

Answer:

Step-by-step explanation:

Hey there) We do it like this:

6\times 3\times 4+3\times 3\times 2=90

Hope, this helps. Have a nice day :)

4 0
3 years ago
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