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ruslelena [56]
3 years ago
14

What is the domain of the following parabola? u-shaped graph that opens up with a vertex of 2, negative 3 All real numbers x ≥ 1

x ≤ 2 y ≥ −3
Mathematics
2 answers:
lara31 [8.8K]3 years ago
8 0

Answer:

Domain of the function that is parabola  is all real numbers.

Hence, option 1 is correct.

Step-by-step explanation:

We have been given a parabola opens up and with vertex (2,-3)

Then equation for the given parabola is:

y=a(x-2)^2+3

Domain is the values of x from a function:

Hence, the domain can be any real number

Therefore, option 1 is correct that is all real numbers.

Shtirlitz [24]3 years ago
4 0
The Answer is A, All real Numbers. Hope you do well!
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Please help will mark brainliest PLZZZZZZzzz
polet [3.4K]

Answer:

see explanation

Step-by-step explanation:

The reciprocal of a number n is \frac{1}{n}

(a)

1 \frac{6}{7} ← change to an improper fraction

= \frac{13}{7}

Then its reciprocal is \frac{1}{\frac{13}{7} } = \frac{7}{13}

(b)

The reciprocal of \frac{7}{13} is \frac{1}{\frac{7}{13} } = \frac{13}{7} = 1 \frac{6}{7}

(c)

Each is the reciprocal of the other

4 0
3 years ago
.please help me with this I will crown you brainlest
Marizza181 [45]
You can prove it by the SAS postulate which should be the first option
4 0
3 years ago
Read 2 more answers
Determine if the sides form a right triangle.
Law Incorporation [45]

Answer:

Yes, it's a right-angle triangle

Step-by-step explanation:

3 root 2 is 4.24

3 root 3 is 5.2

3 root 5 is 6.71

3 root 5 is the longest side, so must be the hypotenuse.

a^2 + b^2 = c^2

(3 root 3)^2 + (3 root 2)^2 = c^2

45 = c^2

Square root both sides

C = root 45

( simplified to C= 3 root 5)

Thus, it is a right-angle triangle.

(Root means a square root)

Hope this helps!

3 0
2 years ago
The circle graph above shows the results of a survey of 660 students in a school. How many students participate in sports?
sleet_krkn [62]

Answer:

231

Step-by-step explanation:

35 % = 0.35

35 % of the students participate in sports

No. of students participating = 0.35 × 660 = 231

5 0
2 years ago
An EPA contractor needs to test the concentration of a substance in ten samples of the ground water. Seventy samples were
olga55 [171]

Answer:

Systematic sampling

Step-by-step explanation:

An EPA contractor needing to test the concentration of a substance in ten samples out seventy samples provided form a single source at regular time intervals.

For the contractor to effectively carry out the testing he has to employ a Non-probability system of sampling which is called Systematic sampling, because in systematic sampling we can assume the population size (x ) which in this case is 70 and the sample size( n ) to be 10

He will have to select ;  ( x / n )^th of the sampling frame for best results

7 0
3 years ago
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