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vodomira [7]
3 years ago
12

PLEASE HELP ME ASAP - WILL GIVE BRAINLIEST - 20 POINTS! THANKS!

Mathematics
2 answers:
vlada-n [284]3 years ago
8 0

Answer:

A: f^-1(x) = (x - 5) / 2

Step-by-step explanation:

To find the inverse of a function, exchange x and y then solve for x

y = 2x +5

Exchange x and y

x = 2y +5

Solve for y

Subtract 5

x-5 = 2y +5-5

x-5 = 2y

Divide by 2

(x-5)/2 = y

The inverse is (x-5)/2

ArbitrLikvidat [17]3 years ago
7 0

Answer:

A

Step-by-step explanation:

You switch the y and x and solve for y.

y = 2x + 5

becomes

x = 2y + 5

Subtract 5 on both sides.

x - 5 = 2y

Divide 2 on both sides.

(x - 5) / 2 = y

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Which number produces a rational number when multiplied by 0.5?
xxMikexx [17]

If the number begins by being rational, multiplying by 0.5 will not change whether or not it is rational. It will remain rational.


That would include any even number 12 * 0.5 = 6

12 started out as rational, so the answer is rational (6)


Any odd number is also rational

23 * 0.5 = 11.5

23 and 11.5 are both rational.


3.636363636 ... is rational so when multiplied by 0.5 the result will be rational.

1.818181818....


So if we start with something irrational like pi

then pi * 0.5 is not rational.

If you have choices, please list them.
4 0
2 years ago
Lia has 7 blue pencils and 28 red pencils. Maria has 14 blue pencils and 42 red pencils, and Tia has 10 blue pencils and 30 red
Sergeeva-Olga [200]
Maria and Tia have the same ratio
6 0
3 years ago
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4x^9y^-4 / x^8y^-6<br><br> Evaluate the expression<br><br> for x = 5 and y = 2.<br><br> ху
kramer

Answer:

80

Step-by-step explanation:

SIMP - lifiy the equation: (see what I did there :D)

4xy^2 = 4(5)(2^2) = 80

ANSWER: 80

3 0
3 years ago
X+3238-f385cdv/3 help me
Arisa [49]

Answer:

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7 0
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What figure is a dilation of Figure A by a factor of 12 ?
avanturin [10]

Answer:

Choose the figure with side lengths 0.5, 1, 2 and 2.5

Step-by-step explanation:

Similar figures are figures which have the same shape but not the same size. This means their angle measures are equal but their side lengths are not instead they are proportional. They are related by a scale factor. To find the new side lengths of the figure multiply the original side lengths by 1/2.

The sides are 1, 2, 4, and 5.

They become:

1*1/2 = 0.5

2*1/2 = 1

4*1/2 = 2

5*1/2 = 2.5

Choose the figure with these distances.

6 0
3 years ago
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