1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sonja [21]
3 years ago
14

On a coordinate plane, a parabola opens down. It has an x-intercept at (negative 5, 0), a vertex at (negative 1, 16), a y-interc

ept at (0, 15), and an x-intercept at (3, 0). The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function? The domain is all real numbers. The range is {y|y < 16}. The domain is all real numbers. The range is {y|y ≤ 16}. The domain is {x|–5 < x < 3}. The range is {y|y < 16}. The domain is {x|–5 ≤ x ≤ 3}. The range is {y|y ≤ 16}.
Mathematics
2 answers:
tigry1 [53]3 years ago
4 1

Answer:

I have no idea sorry maybe ome body

Step-by-step explanation:

but first u divide and that's all i know

Basile [38]3 years ago
3 0

Answer:

Step-by-step explanation:

it is b

You might be interested in
Bridget, June and Colin share £88 in a ratio 3:3:2. How much money does each person get?
astra-53 [7]

Answer

33,33 and 22

Step-by-step explanation:

4 0
2 years ago
The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the
Darya [45]

Answer:

Brand 1    Brand 2    Difference

37734       35202        2532

45299      41635         3664

36240      35500        740

32100      31950         150

37210       38015       −805

48360     47800        560

38200    37810          390

33500    33215        285

Sum of difference = 2532+ 3664+740+150 −805+  560 +390 +285 = 7516

Mean = d=\frac{7516}{8}

Mean = d=939.5

a) d= 939.5

\text{Sample Standard deviation, s} = \sqrt{\dfrac{(x-\bar{x})^2}{n-1}}

=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}

=1441.21

b)SD= 1441.21

c)Calculate a 99% two-sided confidence interval on the difference in mean life.

confidence level =99%

significance level =α= 0.01

Degree of freedom = n-1 = 8-1 =7

So, t_{\frac{\alpha}{2}}=3.499

Formula for confidence interval = \left( \bar{X} \pm t_{\frac{\alpha}{2}} \times \frac{s}{\sqrt{n}} \right)

Substitute the values

confidence interval = 939.5 \pm 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

confidence interval = 939.5 - 3.499 \times \frac{1441.21}{\sqrt{8}} \right) to  = 939.5 + 3.499 \times \frac{1441.21}{\sqrt{8}} \right)

Confidence interval −843.396\ to  2722.396

8 0
3 years ago
Mega Movies hosted a film premiere on Friday night. They charged $8 for adults and $5 for children. Ninety-two adults and childr
zmey [24]

Answer:

Step-by-step explanation:

a + c = 92.....c = 92 - a

8a + 5c = 688

8a + 5(92 - a) = 688

8a + 460 - 5a = 688

3a = 688 - 460

3a = 228

a= 228/3

a = 76 <==== adults

a + c = 92

76 + c = 92

c = 92 - 76

c = 16 <=== children

4 0
3 years ago
Triangular prism please help
dalvyx [7]

Answer:

 C

Step-by-step explanation:

8 0
3 years ago
PLEASEEEE HELP!!<br> Which is the graph of y = ⌊x⌋ – 2?
sergiy2304 [10]
The first one
You start at -2 and go up 1 and to the right 1
4 0
2 years ago
Read 2 more answers
Other questions:
  • Perform the following division. Show the multiplication you would do to make the divisor a whole number. Round the answer to thr
    15·1 answer
  • maria is bringing her sick dog pedro in for a series of appointments at the veterinary clinic. Her total over the course of trea
    5·1 answer
  • (Apex Question, Help?)
    8·1 answer
  • Which is a true statement about missed payments on a credit report?
    5·2 answers
  • Classify as a constant, linear, quadratic, cubic or quartic and give the degree and leading coefficient of each of the following
    15·1 answer
  • Which of the following is true? Tangent is positive in Quadrant I. Sine is negative in Quadrant II. Cosine is positive in Quadra
    12·1 answer
  • HELP AND QUICK
    12·2 answers
  • In the circumference formula C = Pi x Diameter, What is the constant of proportionality?
    10·1 answer
  • A smoothie café has the ingredients needed to make
    14·1 answer
  • Answer the question below
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!