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Tpy6a [65]
3 years ago
7

What is the domain of the function f(x)=x^2+3x+5?

Mathematics
2 answers:
Ugo [173]3 years ago
8 0

Answer:

all real numbers

Step-by-step explanation:

Kitty [74]3 years ago
4 0

Answer:

The domain of this function is all real numbers

Step-by-step explanation:

Unless there is a domain restriction for the function, the domain of a function is all real numbers. This means that all we need to do is determine whether there is a domain restriction.

The things that cause a domain restriction are: an x in the denominator of a fraction like f(x)=\frac{1}{x} or a radical like f(x)=\sqrt{1-x}

As there are no variables in the denominator or a radical, we can conclude that the domain of this function is all real numbers.

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What is the reason for Statement 5 of the two-column proof?
zmey [24]

Given: ∠JNL and ∠MNK are vertical angles and  m∠MNK=90°

Prove: ∠JNL is a right angle.

   Statements                                                     Reasons

1.  ∠JNL and ∠MNK are vertical angles.             Given

2. \angle JNL \cong \angle MNK        Vertical angle theorem

3. m \angle JNL = m \angle MNK        Angle congruence postulate

4.  m \angle MNK = 90^\circ                Given

5. m \angle JNL = 90^\circ                 <u> Substitution Property of Equality</u>

Since, the measures of angle JNL and MNK are equal and the measure of angle MNK is 90 degrees. therefore, by substitution property of equality, both the angles JNL and MNK will have an equal measure.

Therefore,  m \angle JNL = 90^\circ

6. ∠JNL is a right angle.                                     Definition of right angle

8 0
3 years ago
Read 2 more answers
Please help me I need this answer and I can not figure it out im not smart so could you please help
Rom4ik [11]

So really all you have to do is simply the expressions on top to match them.

Starting with (4t-8/5)-(3-4/3t), distribute the negative sign to the right portion in parentheses, then distribute it all out and you will get 16/3t- 23/5

Basically, use distribution to simplify, here's all the matches:

(4t-8/5)-(3-4/3t) --> 16/3t- 23/5

5(2t+1)+(-7t+28) --> 3t+33

(-9/2t+3)+(7/4t+33) --> -11/4t+36

3(3t-4)-(2t+10) --> 7t-22

6 0
3 years ago
Read 2 more answers
Heather practices soccer and piano. Each day she practices piano for 2 hours. After 5 days, she practiced both piano and soccer
irina [24]
She practiced for 4 hrs
4×5=20
5 0
3 years ago
Evaluate 10m + n2/4 when m = 5 and n = 4
Allushta [10]

Answer:

54

Step-by-step explanation:

we have

10m+\frac{n^{2}}{4}

For m=5.n=4

substitute the values of m and the value of n in the equation

so

10(5)+\frac{4^{2}}{4}

50+4

54

3 0
3 years ago
Lin’s father is paying for a $20 meal. He has a 15%-off coupon for the meal. After the discount, a 7% sales tax is applied.
Triss [41]

Answer:

The answer is $18.19cents

Step-by-step explanation:

20 dollars minus 15 percent is 17 dollars plus 7 percent tax is 18.19

Hope this helps.

3 0
3 years ago
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