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
Mandarinka [93]
3 years ago
13

What is the vertex of the graph of the function below? y = x2 + 6x + 5

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
7 0

Answer:

(-3,-4)

If you have a chart with the coordinates in it, it will be in the middle of alike coordinates.

You might be interested in
An article in Fire Technology investigated two different foam-expanding agents that can be used in the nozzles of firefighting s
UNO [17]

Answer:

Step-by-step explanation:

Hello!

The objective of this experiment is to test if two different foam-expanding agents have the same foam expansion capacity

Sample 1 (aqueous film forming foam)

n₁= 5

X[bar]₁= 4.7

S₁= 0.6

Sample 2 (alcohol-type concentrates )

n₂= 5

X[bar]₂= 6.8

S₂= 0.8

Both variables have a normal distribution and σ₁²= σ₂²= σ²= ?

The statistic to use to make the estimation and the hypothesis test is the t-statistic for independent samples.:

t= \frac{(X[bar]_1 - X[bar]_2) - (mu_1 - mu_2)}{Sa*\sqrt{\frac{1}{n_1} + \frac{1}{n_2 } } }

a) 95% CI

(X[bar]_1 - X[bar]_2) ± t_{n_1 + n_2 - 2}*Sa* \sqrt{\frac{1}{n_1}+\frac{1}{n_2} }

Sa²= \frac{(n_1-1)S_1^2 + (n_2-1)S_2^2}{n_1 + n_2 - 2}= \frac{(5-1)0.36 + (5-1)0.64}{5 + 5 - 2}= 0.5

Sa= 0.707ç

t_{n_1 + n_2 -2: 1 - \alpha /2} = t_{8; 0.975} = 2.306

(4.7-6.9) ± 2.306* (0.707\sqrt{\frac{1}{5}+\frac{1}{5} })

[-4.78; 0.38]

With a 95% confidence level you expect that the interval [-4.78; 0.38] will contain the population mean of the expansion capacity of both agents.

b.

The hypothesis is:

H₀: μ₁ - μ₂= 0

H₁: μ₁ - μ₂≠ 0

α: 0.05

The interval contains the cero, so the decision is to reject the null hypothesis.

<u>Complete question</u>

a. Find a 95% confidence interval on the difference in mean foam expansion of these two agents.

b. Based on the confidence interval, is there evidence to support the claim that there is no difference in mean foam expansion of these two agents?

8 0
3 years ago
Define the mathematical base <br>And give an example
lyudmila [28]

Answer:

Answer below

Step-by-step explanation:

A base is the number of digits in a number system. For example in the decimal number system we use the 10 digits ( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 ). So it has the base 10.

HOPE IT HELPED

6 0
3 years ago
Question 11 (5 points)
mariarad [96]

Answer:

.2

Step-by-step explanation:

Add all the possible outcomes which is 32, then seperate the number of times  5 WILL appear which is 9. Divide 9 by 32 which equals 28% and turn that into a decimal. The answer is .2 hope this helps!!

8 0
3 years ago
Two similar polygons have areas of 16 square inches and 64 square inches. The ratio of a pair of corresponding sides is 1/4.
Luden [163]
Your answer is A. True.

Hope this helps.


5 0
3 years ago
PLEASE HELP ME-Name the angles and sides of each pair of triangles that are congruent.
Arturiano [62]

Answer:

Step-by-step explanation:

1) GH ≅ GH

HF ≅HL

GF ≅ GL

∠FGH =∠LGH

∠GHF = ∠GHL

∠GFH = ∠GLH

3)  WX ≅ DC

XY ≅ CY

WY ≅ DY

∠WXY ≅∠DCY

∠XYW≅ ∠CYD

∠XWY ≅∠CDY

7 0
3 years ago
Other questions:
  • Assume that lines that appear to be tangents are tangents. O is the center of the circle.
    13·1 answer
  • State the restrictions on the range for y=x^4+8x^3+k
    9·1 answer
  • PLEASE HELP ME ON THIS URGENT DO NOT WASTE ANSWERS WILL MARK BRAINLIEST
    11·1 answer
  • 2x + 7y = - 10<br> 2x + 2y = 20
    14·2 answers
  • How much is 12 + 6?<br> and how much 7+7+12?<br> Please help me
    9·2 answers
  • The ratio of length and breadth of a rectangular playground is 3:2. There
    8·1 answer
  • Triangle A'B'C' is formed using the translation (x + 2 y + 0) and the dilation by a scale factor of 1/2 from the origin. Which e
    13·1 answer
  • Hey. My teacher asked for homework we review the order of operations. What are they?
    11·2 answers
  • 10 points. Please don't give a answer that doesn't make sense.
    9·2 answers
  • 26. Students who take a statistics course are given a pre-test on the concepts and skills for the first chapter of a statistics
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!