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serious [3.7K]
3 years ago
11

What is the inverse of the function y = 2x + 3?

Mathematics
2 answers:
erastovalidia [21]3 years ago
7 0

Answer:

y = x/2 - 3/2

Step-by-step explanation:

krok68 [10]3 years ago
6 0

Answer:

y = x/2 - 3/2

Step-by-step explanation:

First, get x on its own:

Subtract 3 from each side

y - 3 = 2x

Divide through by 2

y/2 - 3/2 = x

or x = y/2 - 3/2

Now simply switch labels: x↔y

y = x/2 - 3/2

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What is the length of AB?
Xelga [282]

Answer:

<em>AB = 7.35 cm</em>

Step-by-step explanation:

From the attachment,

In ΔDEF,

DF = GH-(GD+FH) = 6 - (2+3) = 1 cm

DE = 2+3 = 5 cm (sum of two radius)

Applying Pythagoras theorem,

EF=\sqrt{DE^2-DF^2}=\sqrt{5^2-1^2}=\sqrt{24}=2\sqrt6

In ΔCDI,

DI = GH-(GD+IH) = 6 - (2+1.5) = 2.5 cm

CD = 2+1.5 = 3.5 cm (sum of two radius)

Applying Pythagoras theorem,

CI=\sqrt{CD^2-DI^2}=\sqrt{3.5^2-2.5^2}=\sqrt6

AB = EF + CI = 2\sqrt6+\sqrt6=3\sqrt6=7.35\ cm

6 0
3 years ago
Read 2 more answers
What are the two whole numbers that are closest to the square root of 200
faust18 [17]
<span>14.1421356237 is the square root.
14 and 15</span>
7 0
3 years ago
Of 500 new electronic products, 280 were intended for people over the age of 16, and 320 used a rechargeable battery. Of those p
e-lub [12.9K]
I have included the work and answer on the picture attached below:

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3 years ago
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Someone please help!
vladimir1956 [14]
Linda's original savings is $800.

3/4 of savings on furniture. 

4/4 - 3/4 = 1/4 this is spent on the TV.

200 ÷ 1/4 = 0   *equation to be used in finding the original amount of Linda's savings.

Dividing fractions:

Step 1. Get the reciprocal of the 2nd fraction. 200/1 is the 1st fraction. 1/4 is the second fraction. The reciprocal of 1/4 is 4/1. Reciprocal means swapping the numerator and denominator.

Step 2. Multiply the 1st fraction to the reciprocal of the 2nd fraction.

200/1 * 4/1 = (200 * 4) / (1 * 1) = 800 / 1.

Step 3. Simplify the fraction.

800 / 1 = 800.


5 0
3 years ago
What is the degree of the polynomial. 5x²+8x²- 4x⁴+x. (a) 2 (b) 1 (c) 4 (d) 8​
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Answer:

4

Step-by-step explanation:

5x²+8x²- 4x⁴+x

The degree is the highest power

The highest power is 4

The degree is 4

8 0
3 years ago
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