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4 years ago

Help The inverse of a function is a function. always sometimes never

Mathematics

2 answers:

8_murik_8 [283]4 years ago

6 0

The answer is sometimes

marysya [2.9K]4 years ago

5 0

Sometimes a function:
The inverse function of y=x^2 is y=+/-sqrt(x), because remember the negative square of something is the same as the positive square of it.
y=+/-sqrt(x) fails the Vertical line test.
Inverses are only one to one if the original function is a bijection

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A library contains 2,000 books. There are 3 times as many

julsineya [31]

Answer:

500 de no ficcion y 1500 de ficcion

Step-by-step explanation:

si tomamos que hay 2000 libros hay que buscar un numero que multiplicado 3 veces por si mismo nos de 2000, como ya tenemos el 500 que seria los libros de no ficcion, ahora tenemos que e si al multiplicarlo por 3 veces nos da los 1500 que nos falta para completar 2000

500 + 1500 = 2000

6 0

3 years ago

According to the fundamental theorem of algebra, how many zeros does the polynomial below have?

Oxana [17]

It has 3 zeros, because its a polynomial of degree 3.

6 0

3 years ago

Read 2 more answers

Ajoba and Prav drive to work. Ajoba drives 45 miles in 2.5 hours. Prav drives 74 km in 1 hour 15 minutes. Work out the differenc

amm1812

Answer:

Ajoba: 28.8km/h

Prav: 59.2km/h

The difference in speed is: 59.2-28.8=30.4km/h

Step-by-step explanation:

Ajoba:

d=45mi Convert to km // $45mi(\frac{1.6km}{1mi} )=72km$

t=2.5h

v=? 28.8km/h

Prav:

d=74km

t=1h15m or 1.25h

v=? 59.2km/h

$Formula: d=v*t$

Solve for v;

$v=\frac{d}{t}$

$v=\frac{72km}{2.5h} \\v=28.8km/h$

--------------------------------------------

$v=\frac{d}{t}$

$v=\frac{74km}{1.25h} \\v=59.2km/h$

4 0

3 years ago

What is 3 2/5 multiplied by 2 1/3

Cerrena [4.2K]

7 14/15 Good luck! have a great day

7 0

3 years ago

Read 2 more answers

In a survey , rajveer asked 110 people whether they were employed or unemployed.

storchak [24]

Answer:

Step-by-step explanation:

Create a two-way table with the given information:

$\begin{array}{| c | c | c | c |}\cline{1-4} & \sf Employed & \sf Unemployed & \sf Total\\\cline{1-4} \sf Men & 40 & & 59 \\\cline{1-4} \sf Women & & & \\\cline{1-4} \sf Total & 84 & & 110 \\\cline{1-4} \end{array}$

Fill in the blanks in the table using <u>mathematical operations</u>:

⇒ Men unemployed = 59 - 40 = 19

⇒ Women employed = 84 - 40 = 44

⇒ Total women = 110 - 59 = 51

⇒ Total unemployed = 110 - 84 = 26

⇒ Women unemployed = 51 - 44 = 7

$\begin{array}{| c | c | c | c |}\cline{1-4} & \sf Employed & \sf Unemployed & \sf Total\\\cline{1-4} \sf Men & 40 & 19 & 59 \\\cline{1-4} \sf Women &44 & 7& 51 \\\cline{1-4} \sf Total & 84 &26 & 110 \\\cline{1-4} \end{array}$

Reading from the table, 7 women responded that they were unemployed.

3 0

2 years ago