Answer:
Step-by-step explanation: 19
evaluate the following expression for x=-2 -4x+8+2x+3
Answer:
15
Step-by-step explanation:
x = 2
-4x+8+2x+3 = ?
-4 (-2) + 8 + 2 (-2) + 3 =
= 8 + 8 - 4 + 3
= 16 - 4 + 3
= 12 + 3
= 15
hopefully this helped you :)
Select the correct answer.
Which function is represented by this graph?
A.
f(x) = |x + 7| − 3
B.
f(x) = |x − 7| − 3
C.
f(x) = |x + 3| − 7
D.
f(x) = |x − 3| − 7
Answer:
The answer is B
Step-by-step explanation:
The function is represented by the given graph is f(x)=|x-7|-3. Therefore, option B is the correct answer.
What is a absolute value equation?To solve an equation containing absolute value, isolate the absolute value on one side of the equation. Then set its contents equal to both the positive and negative value of the number on the other side of the equation and solve both equations.
From the given graph, the vertex is (7, -3).
x-intercept(s): (10,0),(4,0)
y-intercept(s): (0,4)
We know that, general form of the absolute equation is f(x)=a|x-h|+k.
Here, equation is f(x)=|x-7|-3
Therefore, option B is the correct answer.
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2) Which of the following tables represents an exponential function?
Please help !!
Answer:
Step-by-step explanation:
im guessing B
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1800 hours and a standard deviation of 25 hours. Using the empirical rule, what percentage of light bulbs last between 1725 hours and 1875 hours?
Answer:
99.7%
Step-by-step explanation:
The empirical rule formula states that:
68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ .
95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .
99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ
Step 1
We have to find the number of standard deviations from the mean
μ = Mean = 1800 hours
σ = Standard deviation = 25 hours
For 1725 hours
μ - xσ =
1800 - 25x = 1725
25x = 1800 - 1725
25x = 75
x = 75/25
x = 3
For 1875 hours
1800 + 25x = 1875
25x = 1875 - 180
25x = 75
x = 75/25
x = 3
Step 2
From the above calculation, the bum of standard deviations from the mean is 3
Hence, the percentage of light bulbs last between 1725 hours and 1875 hours is 99.7%
Use trigonometry to determine the m>DEC to the nearest degree
Answer:
m∠DEC = 50° to the nearest degree
Step-by-step explanation:
cos D = adjacent side/hypotenuse
= 36/56
m∠DEC = arccos (36/56) =50° to the nearest degree
Question 4 of 40
A building has three elevators. Each elevator is out of order 30% of the time.
The following set of random numbers represents 20 simulations of the
elevators, with 0, 1, and 2 representing a broken elevator and 3, 4, 5, 6, 7, 8,
and 9 representing a working elevator. In how many of the simulations were
all three elevators working?
931
188 763 841 559 144 652 277
653 673
404 396 011 843 599 797 414 761 273 844
Answer:
the answer is 9.
Step-by-step explanation:
The total stimulations in which all three elevators are working is 12(option d) by the concept of data representation.
What is data representation?Data Representation: A method for analyzing numerical data is data representation. Data representation is used to create a diagram that shows the connections between facts, ideas, information, and concepts. It is a fundamental learning technique that is clear-cut and uncomplicated. The data type in a particular domain is always what determines it. There are many various styles and sizes of graphical representations.
According to the given data:
A building has 3 elevators.
The following set of random numbers represents 20 stimulations of the elevators, with 0, 1 representing the broken elevator and 2,3,4,5,6,7,8and 9 representing a working elevator.
Stimulation data:
931 188 763 841 559 144 652 277 653 673 404 396 011 843 599 797 414 761 273 844
Now, as we observe from the given data, the stimulation in which all three elevators are working are-
763,559,652,277,653,673,396,843,599,797,273,844a total of 12 stimulations.
Thus, the total stimulations in which all three elevators are working is 12
Hence, option d is correct.
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Terry rents a kayak while he is on vacation. He is required to pay a deposit of $95 plus an additional $11.50 per day. Terry only has $150 to spend on kayaking. Write and solve an inequality you can use to determine the maximum number of days Terry can afford to rent a kayak.
Answer:
A maximum of 4 days
Step-by-step explanation:
Inequality: 95 + 11.50x ≤ 150
Okay so the 95 is his fee. Then for everyday, it's 11.50 and we don't know how many days yet, so 11.50x. The 95 dollars and the 11.50x has to equal to or less than 150 since that is how much he has to spend on vaca.
95 + 11.50x ≤ 150
-95 -95
11.50x ≤ 55
/11.50 /11.50
X=4.78260869565
You would round down since he has a budget.
The first three terms of a sequence are given. Round to the nearest
thousandth (if necessary).
309, 303, 297, ...
Find the 33rd term.
Answer:
117
u welcome
Step-by-step explanation:
What is the equation of the function graphed below?
Answer:
D
Step-by-step explanation:
sorry if the answer is wrong
Someone help me with this
Answer:
=z ^(-11) + ^(-15)
= z ^ -26
Answer:
z^-11 times z^-15 = z^-26
Step-by-step explanation:
According to exponential properties, multiplying two numbers that have exponents with the same bases should be added.
Negative exponents mean to go from a^-x to 1/a^x.
Using these properties, we evaluate the expression.
Both terms have the same base, z, so we can go ahead and add the exponents.
-11 + -15 = -26
z^-11 * z^-15 = z^-26
Because the instructions specifically say to leave it in z^n form, our answer is z^-26.
Hope this helped!!
please help me with full calculations
9514 1404 393
Answer:
see attached
Step-by-step explanation:
When rotation is 180° or 360°, the direction is immaterial. The result is the same no matter which direction you go.
Select the correct answer.
Which sentence correctly compares temperatures?
Answer: C
Step-by-step explanation:
C is the only statement that is correct
it's all based on negative numbers :)
A piece of string is 120 centimeters long.
How long would the piece of string measure in meters?.
Answer:
1.2m
Step-by-step explanation:
1 meter = 100 cm
120cm * (1m/100cm) = 1.2m
Math/Geometry
HELP ASAP PLS GEOMETRY
Answer:ANSWER IS CBD by ?
Step-by-step explanation:
ok so ABC is equal to 180 degreess so /_\ would a right angle which is 90
43, 45, 2, 5, 13, 11
Median -
Q1 -
Q3 -
IQR -
Answer:
Median- 12
Q1- 5
Q3- 43
IQR- 38
Step-by-step explanation:
2, 5, 11, 13, 43, 45
Put your numbers in order of least to greatest
Since there is no given median as the amount of numbers is even, find the number in between the 2 middle numbers, in this case, the number would be 12, as it is in between 11 and 13.
To find Q1 and Q3, you need to find the first and third median, which would be 5 and 43. To find the IQR, you need to subtract Q3 from Q1, which would give you 38 in this equation
a line passes through point (-10,3) and has a slope of 1/2. write an equation in Ax+By=C form for this line. Use integers for A, B, and C
Answer:
-10, -4
Step-by-step explanation:
This data set gives the height (in feet) of 15 rose plants in a garden: 5, 3, 4, 3, 2, 4, 1, 5, 5, 1, 1, 5, 4, 3, 5.
Which dot plot accurately represents this data?
dot plot A
dot plot B
dot plot C
dot plot D
Answer: It’s plot C
That’s because if you count how many fives there are then that’s how many dots same with four there two and one.
Two dice are rolled. What is the probability of getting doubles?
Answer:
the probability of getting doubles is 1 / 6
I hope this may be helpful
Answer:
it is 1/36
Step-by-step explanation:
if you want to get doubles, you have a chance of 1 out of 6 on each die. All you have to do from here is multiply them
1/6*1/6=1/36
find the measure of x in the figure. show your work. answer asap please
Answer:
x=25
Step-by-step explanation:
2x+40=90
90-40=50
50 divided by 2 is 25
x=25
find the volume of this cylinder
Answer:
25² · 40 π in.³
Step-by-step explanation:
V = πr²h
π · 25² · 40
≈ 78539.81634
Since your question wants it in a different way, you have to know the formula.
V = πr²h
V = r² · h π in³
v = 25² · 40 π in³
After Luca took his dogs for a walk, he gave them 6 dog treats. When Luca's dad got home from work, he gave
the dogs t more treats. All together that day, Luca's dogs got 10 dog treats,
Write an equation to describe this situation.
How many dog treats did Luca's dad give the dogs?
Answer:
Step-by-step explanation:am
Luca gave them 6 treats.
His father gave them t (unknown) treats.
All together, they got 10 treats.
This would be the equation:
[tex]6+t=10[/tex]
To solve, subtract 6 from each side.
[tex]6-6+t=10-6\\t=4[/tex]
Therefore, Luca's father gave the dogs 4 treats.
Need help on this question! Maybe be mark brainliest?
please help omg- AAAAAAAAAAAAAAAAAAAAA
Answer: 11. A and B
12. 520 cubic feet.
Step-by-step explanation: 11. The volume for a prism is base x height. Thus, it would be 2 x 3 x 3 or 6 x 3 to get a total of 18 cubic units.
12. The first compartment's volume is 5 x 7 x 8 or 280. The second compartment is 5 x 6 x 8 or 240. The total would be 280 + 240 or 520 cubic feet.
Answer:
11.B
12.520
Step-by-step explanation:
5.7.8=280
5.6.8=240
TOTAL=520
PLEASE HELP!!!! - DUE SOON YOU WILL GET 40 POINTS FOR ANSWERING THESE QUESTIONS - PLEASE PLEASE PLEASE TRY TO SHOW WORK! - LINKS=REPORTED!!! -
Hiii dont mind the answer that i put but im not sure if im right, can someone please help me?
Answer:
Option 4
Step-by-step explanation:
The volume of a cylinder is going to be the area of the base (which is a circle) times the height. if you have cylindrical mug, then you can use the base area×height relationship, but it won't be exact because some of the volume is going to be used for the walls of the mug itself.
Anyways:
Volume = Base Area × Height
•Base Area -> Circle = π×radius²
•Height is given as 7in.
Volume = π×(6.2in)² × 7in = 845.33975...
Volume is in units cubed (the 3rd power) which is where the in³ is from. Your closest option here looks to be the 4th choice.
Help!!!! I need the answer to this
Answer:
1. 147°
3. 147°
4. 33°
Step-by-step explanation:
hope this helps!
Rectangle ABCD, A, B, C, D is graphed in the coordinate plane. The following are the vertices of the rectangle: A(5, 5), B(7,5), C(7,-1) and D(5,-1). Given these coordinates, what is the length of side BC of this rectangle?
Answer:
I think the answer is 5
BC=5
Step-by-step explanation:
Please help I'm struggling
Answer:
the first is 1/5 what are the other options
Step-by-step explanation:
Women make up 52 percent of the voting-age population and are more likely to vote, yet a. a woman has never been elected to the U.S. Senate. b. men dominate the political arena. c. women dominate the political arena. d. a woman has never been elected governor of a U.S. state. Please select the best answer from the choices provided A B C D
Answer:
b. "men dominate the political arena".
Step-by-step explanation:
Edgeńuity says - B. "men dominate the political arena".
I got a 100% on the test
Do you think two students who made no computation errors would get different values for this numerical expression> explain (4x35)+(36x8
Answer:
Yes, they would get different values
Step-by-step explanation:
Given
[tex](4 * 35) + (36 * 8)[/tex]
Required
Would there be different value for the expression?
From the question, we understand that both students made no computational errors. This doesn't mean that the students cannot make other errors.
For instance, the expression can be solved (wrongly) in the following ways;
[tex](4 * 35) + (36 * 8) \to 4 * 35 + 36 * 8 \to 140 + 36 * 8 \to 176 * 8 = 1408[/tex]
[tex](4 * 35) + (36 * 8) \to 4 * 35 + 36 * 8 \to 4 * 71 * 8 \to = 2272[/tex]
While the correct solution is:
[tex](4 * 35) + (36 * 8) \to 140 + 288 =428[/tex]
Hence, it is possible for two students to get different values