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ladessa [460]
2 years ago
7

Find the domain of the function. (Enter your answer using interval notation.) f(x) = 9x² + 6x – 1​

Mathematics
1 answer:
GuDViN [60]2 years ago
7 0

Answer: (-infty, infty)

Step-by-step explanation:

The domain of a quadratic function is the set of real numbers.

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You order two tacos and a salad. the salad costs 2.50.you pay 8% sales tax and leave a $3 tip. you pay a total of 13.80 how much
riadik2000 [5.3K]
Given:Price of one taco = x; price of 2 tacos = 2xPrice of salad = $2.50Sales tax = 8% of the combined price of two tacos and a salad, namely .08(2x + 2.50)Tip = constant fee = $3.00Total bill = $13.80 Therefore the equation becomes
2x + 2.50 + .08(2x + 2.50) + 3 = 13.80 Solutions: 2x + 2.50 + .16x + .20 + 3 = 13.80 (using the distributive property to multiply 2x and 2.5 by .08).2.16x + 2.70 + 3 = 13.80 (combining like terms)2.16x + 5.70 = 13.80 (combining like terms)2.16x + 5.70 = 13.80 - 5.70 (subtraction property of equality)2.16x = 8.10x = 8.10/2.16 = 3.75 (division property of equality)
The cost of a single taco is $3.75
3 0
3 years ago
The two dot plots show the number of guests per night.
LiRa [457]

A dot plot or for chart is a statistical plot consisting of data points that are plotted on a scale using dots.

<h3>What is a dot plot?</h3>

Your information is incomplete. Therefore, an overview of a dot plot will be given. A dot plot is a data visualization where the day points are plotted as dots on the graph.

Dot plots are used for relatively small data sets. It uses the dots to show where the data values in the distribution are.

Learn more about dot plot on:

brainly.com/question/21862696

7 0
2 years ago
Read 2 more answers
Does every acute triangle have 3 congruent sides?
Gemiola [76]
No. Just because the angles are all less than 90 degrees, that doesn't tell us anything about the sides. The sides are all congruent ONLY if all 3 angles are 60 degrees each. If the angles all have different sizes, then so do the sides.
4 0
3 years ago
Paul was thinking of a number. Paul adds 10, then divides by 2 to get an answer of -13. What was the original number?
frozen [14]

Answer:

I believe its -36

Step-by-step explanation:

-36+10=-26

-26/2= -13

3 0
3 years ago
Read 2 more answers
Help me solve this please
igomit [66]
The key word here is *square* in "square flower garden". 

So we need to find the area of the flower garden, and subtract it from the overall area of the yard. The remainder will be how much grass covers the yard.

Area of the Square flower garden:
 7.5 * 7.5 = 56.25

Area of the Entire yard:
25 * 18 = 450

450 - 56.25 = 393.75 square feet of grass
6 0
3 years ago
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