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BaLLatris [955]
3 years ago
5

Jennifer has 3 brothers. Mark is older than Jennifer, but he is not the oldest.

Mathematics
1 answer:
Elza [17]3 years ago
8 0
Jennifer I would say
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15 pts. Prove that the function f from R to (0, oo) is bijective if - f(x)=x2 if r- Hint: each piece of the function helps to "c
solniwko [45]

Answer with explanation:

Given the function f from R  to (0,\infty)

f: R\rightarrow(0,\infty)

-f(x)=x^2

To prove that  the function is objective from R to  (0,\infty)

Proof:

f:(0,\infty )\rightarrow(0,\infty)

When we prove the function is bijective then we proves that function is one-one and onto.

First we prove that function is one-one

Let f(x_1)=f(x_2)

(x_1)^2=(x_2)^2

Cancel power on both side then we get

x_1=x_2

Hence, the function is one-one on domain [tex[(0,\infty)[/tex].

Now , we prove that function is onto function.

Let - f(x)=y

Then we get y=x^2

x=\sqrt y

The value of y is taken from (0,\infty)

Therefore, we can find pre image  for every value of y.

Hence, the function is onto function on domain (0,\infty)

Therefore, the given f:R\rightarrow(0.\infty) is bijective function on (0,\infty) not on  whole domain  R .

Hence, proved.

3 0
3 years ago
The Apache Taxi Company charges $2.50 to pick up a passenger and then adds $1.95 per mile. Isaac was charged $27.46 to go from o
nirvana33 [79]
The equation is: 27.46 = 1.95x + 2.50

The answer is 12.8
4 0
3 years ago
Karen has a square rug that covers 76.5^{2} of her living room floor. Which measurement is closest to the side length of thes ru
zloy xaker [14]

Answer:

76.5

Step-by-step explanation:

if the area is 76.5^2, then all you have to do is take the square root, and it is 76.5

3 0
3 years ago
GIVING AWAY BRAINLIEST READ THE QUESTION!
ozzi

Answer:

C

Step-by-step explanation:

A function is constant when the y value does not change when the x value does

The function is constant during section C

7 0
3 years ago
Please please help me on how to do congruent figures!
AlexFokin [52]

Answer:

x = 5

Step-by-step explanation:

Since both triangles are similar hence;

m<CAB = m<CDE

Given theta

m<CAB = 50degrees

m<CDE = 10x

Substitute the given angles

50 = 10x

Swap

10x = 50

Divide both sides by 10

10x/10 = 50/10

x = 5

Hence the value of x is 5

7 0
3 years ago
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