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3 years ago

Find the domain and range of function f(x) is equal to root √x-1

Mathematics

1 answer:

Vladimir79 [104]3 years ago

7 0

Answer:

Step-by-step explanation:

If you meant f(x) = √x - 1, then the domain is [0, infinity).

If you meant f(x) = √(x-1), then the domain is [1, infinity).

When any ambiguity may rear its ugly head, use parentheses, as indicated here.

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There are 10 marbles in a bag. 1/5 are red and the others are blue. What is the ratio to blue marbles.

Irina-Kira [14]

Answer:

Ratio = 1 : 4

Step-by-step explanation:

Total marbles = 10

Given 1/5 is red, that is 1/5 of the total marbles are red

$\frac{1}{5} \ of \ 10 = \frac{1}{5} \times 10 = 2$

Therefore , 10 - 2 = 8 marbles are blue.

Ratio of red marbles to blue marbles

$\frac{2}{8} = \frac{1}{4} = 1 : 4$

4 0

2 years ago

Y= 1/2x+ 2 to make the x the subject.

timofeeve [1]

Answer:

$x=2y-4$

Step-by-step explanation:

$y=\frac{1}{2} x+2$

"To make x the subject" means to have the equation with all the terms in x on one side. As of now, y is the subject of the equation.

You start by subtracting 2 from both sides, you should get the following.

$y-2=\frac{1}{2} x$

Then you multiply by 2 from both sides, you should end up with the following.

$2(y-2)=x$

Therefore, you get the following.

$x=2(y-2)$

Finally, you distribute and get the answer.

$x=2y-4$

5 0

2 years ago

Help me with this!! Will mark Brainliest

tatiyna

Answer:

TU = 19 cm

coz both the triangles are same.

6 0

2 years ago

What is not a description of slope?

Gelneren [198K]

Answer:

Option (d) is wrong.

Step-by-step explanation:

Slope is:

rise over run
The rate of change of a line
Change in y over the change in x
<em><u>The ratio of vertical change to the horizontal change. </u></em>

It can be given by mathematically as follows :

$m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{and}\\\\m=\dfrac{dy}{dx}$

Hence, the option which is not a description of slope is (d) "the ratio of horizontal change compared to vertical change"

7 0

3 years ago

What is the measure of angle 15

Mademuasel [1]

Answer:

Step-by-step explanation:

m<15 = m<1 because of how the transversals are placed. so m<1 = 90º - 65º = 25º

that means that m<15=25º

7 0

2 years ago

Read 2 more answers