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3 years ago

Asap Select the correct answer. Which function has a restricted domain?

Mathematics

1 answer:

german3 years ago

8 0

Step-by-step explanation:

Check second one

$\\ \rm\Rrightarrow k(x)=(-x+3)^{\frac{1}{2}}$

1/2 means square root

$\\ \rm\Rrightarrow \sqrt{(-x+3)}$

$\\ \rm\Rrightarrow -x+3>0$

$\\ \rm\Rrightarrow -x>-3$

$\\ \rm\Rrightarrow x$

Hence.

Domain is restricted

Option B is correct

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3 years ago

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There are 10 students in a class. The teacher chooses 2 students to go to the

CaHeK987 [17]

Answer:

The number of ways in which students were chosen is 45 ways .

Step-by-step explanation:

Given as :

The number of students in a class = x = 10

The number of students chosen by teacher to go to library = y = 2

Let The number of ways in which students were chosen = n ways

Now, According to question

So, number of ways in which students were chosen = $_{y}^{x}\textrm{C}$

Or, n ways = $_{2}^{10}\textrm{C}$

Or, n = $\frac{\L 10}{\L( 10-2)\times \L 2}$

Or, n = $\frac{\L 10}{\L8\times \L 2}$

Or, n = $\frac{10\times 9\times \L 8}{\L 8\times \L 2}$

Or, n = $\frac{10\times 9}{2\times 1}$

Or, n = 5 × 9

i.e n = 45

So, The number of ways in which students were chosen = n = 45 ways

Hence,The number of ways in which students were chosen is 45 ways . Answer

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4 years ago

Which of the following shows 2.736 correctly rounded to the tenths place?

nikklg [1K]

Answer:

2.7

Step-by-step explanation:

The 3 does not round up the 7, so it stays as 2.7

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Answer:

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Step-by-step explanation:

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3 years ago

Liz and Sara are making cookies for a bake sale. The graph shows the number of cookies that Liz bakes during a 5-hour period.

Radda [10]

Statements

case A) Sara had baked more cookies at the start of the $5$ hours than Liz

The statement is True

we know that

At the start of the $5$ hours Liz has baked $220$ cookies-----> see the graph

Find the number of cookies that Sara has baked for $x=5$ hours

$y=45x+38$

$y=45*5+38=263$

$263 > 220$

therefore

Sara had baked more cookies at the start of the $5$ hours than Liz

case B) Sara bakes $45$ cookies each hour

The statement is True

we know that

The number of cookies baked each hour is equal to the slope of the linear equation

The linear equation is

$y=45x+38$

The slope is $m=45\frac{cookies}{hour}$

case C) Liz bakes $19$ cookies each hour

The statement is false

Find the slope of the Liz graph

The slope is equal to

$m=\frac{y2-y1}{x2-x1}$

Let

$A(0,19)\ B(4,179)$

Substitute the values

$m=\frac{179-19}{4-0}$

$m=40\frac{cookies}{hour}$

case D) Liz bakes more cookies each hour than Sara

The statement is False

Sara bakes $45$ cookies each hour

Liz bakes $40$ cookies each hour

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4 years ago