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zimovet [89]
3 years ago
6

Write a linear function f with the values f(2)=4 and f(-7)=9

Mathematics
1 answer:
Anettt [7]3 years ago
4 0

Answer:
f(x) = -5/9 x + 5 1/9
Step-by-step explanation:
f(2)=4 and f(−7)=9 means the line pass through (2,4) and (- 7,9)
f(x) = mx + b
m = (y-y') / (x-x') = (9 - 4) / (- 7 - 2) = - 5/9
for (2,4) : b = f(x) - mx = y - mx = 4 - (- 5/9) x 2 = 4 + 10/9 = 46/9 = 5 1/9
f(x) = -5/9 x + 5 1/9
check for (-7, 9) f(-7) = (-5/9) * (-7) + 5 1/9 = 35/9 + 46/9 = 81/9 = 9
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If a square has the perimeter of 15.2 centimeters, what are 2 equations that can determine the perimeter of the square?
astraxan [27]

Answer:

1) P=4s

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see the explanation

Step-by-step explanation:

we know that

The perimeter of the square is equal to

P=4s

where

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we have

P=15,2\ cm

substitute

15.2=4s

solve for s

s=15.2/4=3.8\ cm

The area of a square is equal to

A=s^2

substitute

A=3.8^2=14.44\ cm^2

we have that

s=\sqrt{A}

therefore

2 equations that can determine the perimeter of the square are

1) P=4s ----> P=4(3.8)=15.2\ cm

2) P=4\sqrt{A} ----> P=4\sqrt{14.44}=15.2\ cm

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3 years ago
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Firlakuza [10]

Answer:

<u><em>The area of the irregular figure is 140 sq. ft.</em></u>

Step-by-step explanation:

<em>Triangle: </em>

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<em> </em>

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<em> </em>

<em>24 x 0.5 = 12 </em>

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3 years ago
Juanita has a pail with capacity of 96 fluid ounces. How many pints will the pail hold ?
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4 0
3 years ago
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schepotkina [342]

Answer:

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3 0
3 years ago
What is the surface area for this?
IrinaK [193]

Answer:

143 cm²

Step-by-step explanation:

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