The z-score 30 points below the mean is -3
The normal distribution of scores has a standard deviation(σ) of 10
Below the mean is (X-μ)=-30
The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set.
Z=(X-μ)/σ
Z=-30/10
Z=-3
Therefore, the z-score is -3.
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if a wind turbine costs 1.3 million per megawatts how much would it cost to build a 2.6 megawatts wind turbine
Answer:
It would cost 3.38 million for 2.6 megawatts.
Step-by-step explanation:
1.3 X 2.6 = 3.38
3.38 million for 2.6 megawatts.
find the function. f(-7) if f(x) = 8x+15
f(-7) =
-4?
7
0
Answer:
-41.
Step-by-step explanation:
Replace the x by -7:
f(-7) = 8(-7) + 15
= -56 + 15
= -41.
ANSWER ASAP ILL GIVE BRAINLIEST
Answer: C
Step-by-step explanation: There are 9 cards. 3 are vowels. 3/9 reduces to 1/3
This oblique cylinder has a volume of 90\pi\text{ m}^390π m
3
90, pi, start text, space, m, end text, cubed and a base area of 12\pi\text{ m}^212π m
2
12, pi, start text, space, m, end text, squared.
whats the height?
Answer:
7.5
Step-by-step explanation:
The height of the cylinder is equal to 7.5 meters.
Given that,
An oblique cylinder has a volume of 90π m ^3 and a base area of 12π m^2.
A cylinder is defined as it is geometric shape when a rectangle sheet fold into a circular shape the figure arises looks same as the tube structure.
What is volume?Volume, is defined as the ratio of the mass of object to its density.
The volume of the oblique cylinder = height * base area
90π = 12π * height
height = 7.5 m
Hence, the height of the cylinder is equal to 7.5 meters.
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The question seems to be incomplete or improperly written,
So Correct Question could be given as,
This oblique cylinder has a volume of 90π m ^3 and a base area of 12π m^2.
what is the height of the cylinder?
36/c=45/10 please help me
Answer:
c = 8
Step-by-step explanation:
36/c = 45/10
36 * 10 = 45 * c
360 = 45c
c = 360/45
c = 8
If a triangle has a side length of 5 inches and another side length of 7 inches, which of the
following choices for the third side length will make a triangle?
a. 1 inch
b. 2 inches
c. 6 inches
d. 13 inches
Answer:
d. 13 inches
Step-by-step explanation:
When we need to solve the side length and length of triangles, we need to remember one thing.
Coming to a right triangle, there are two short sides and one long side, and the two short sides need to add up to something less than the one long side.
Therefore, since we know our two short sides, add them :
7in. + 5in.
= 12in.
Looking at the answers, we can point out that d. is greater than 12 inches, therefore making it the correct answer.
someone please tell me how to work out this type of problem i completely forgot
Answer:
Plug the x-values into the equation to get the y values. This will give you coordinates that you can graph a line with.
Step-by-step explanation:
For x = -5: y = -3 - 2 * (-5) = 7, so the coordinates are (-5, 7)
For x = -2: y = -3 - 2 * (-2) = 1, so the coordinates are (-2, 1)
(Etc.)
Then, plot these coordinates and draw a line through them to complete the graph.
A small business earns a profit of $6500 in January and $17,500 in May. What is the rate of change in profit for this time period?
The rate of change in profit for this time period is per month.
There are 15 plates in a kitchen cabinet. The diameter of each plate is either 7 inches or 12 inches. The diameter of all 15 plates combined is 140 inches. Which system of equations can be can be used to find the number of 7-inch plates, x, and the number of 12-inch plates, y, that are in the cabinet? A. x + y = 140 12x + 7y = 15 B. 7x + 12y = 140 7x + 12y = 15 C. x + y = 15 7x + 12y= 140 D. x + y = 15 12x + 7y= 140
whats the answers
Answer:
37 There are 15 plates in a kitchen cabinet. The diameter of each plate is either 7 inches or
Step-by-step explanation:
12 inches. The diameter of all 15 plates combined is 140 inches.
Which system of equations can be used to find the number of 7-inch plates, x, and the
number of 12-inch plates, y, that are in the cabinet?
A
x + y = 140
12x + 7y = 15
B
7x +12y = 140
7x + 12y = 15
cx + y = 15
7x + 12y = 140
D
x + y = 15
12x + 7y = 140
A quadratic in factored form is given as (x + 5) (2x - 3) = 0, what are the solutions of this given equation?
X = and x =
Answer:
x = -5, x = 1.5
Step-by-step explanation:
If the two expressions multiplied together is 0, that means that one of the expressions would have to equal 0. This gives us two possible answers. Our two equations are now:
x + 5 = 0
2x - 3 = 0
We will first solve the first one!
To isolate x, we subtract 5 from both sides to get:
x = -5
Onto the second one!
We begin to isolate x by adding 3 to both sides.
2x = 3
Now we divide both sides by 2.
x = 3/2 or 1.5
Answer:
Step-by-step explanation:
The area of a circle is 0.5024 square centimeters. What is the circle's radius?
someone pls just comment something again
Answer:
?
Step-by-step explanation:
Answer:
こんにちは、お元気ですか？
あなたの質問があれば、私もうまくやっています。日本での生活はとても楽しいです！日本に来てください。
Step-by-step explanation:
Someone plz help me giving brainliest
If the line segment at right is subdivided
into equal parts, what is the length of
the marked portion of the line?
75
Answer:
50
Step-by-step explanation:
75 dived into 3 parts can also be written as 75/3. 75/3 is 25 making each part worth 25. 2 segments are included in the marked portion so its 50 or (25 + 25)
The quotient of 4,768 divided by 4.22 is greater than which of the following ? A. 1,000 B. 1,400 C .1,600 D. 2,000
Answer:
a.
Step-by-step explanation:
Simplify
(20n−36)−54(35n−20)
Answer:
-1870n + 1044
Step-by-step explanation:
Find m∠E
*geometry problem*
Can anyone help me with these questions? I am sorry if they aren’t a lot of points.
Answer:
Question 1: A
Question 2: B
Question 3: C
Step-by-step explanation:
Please give me brainliest if this helps! :)
What must be true when solving a quadratic equation when using factoring?
The equation must be equal to
Answer:
Step-by-step explanation:
The function must be factorable.
For example, x^2 + x - 6= 0 factors to (x + 3)(x - 2) = 0 so the roots are -3 and 2.
x^2 + x - 7 = 0 will not factor so you need another method to solve this.
Graph the following exponential function given the table of
values.
Answer:
D
Step-by-step explanation:
Here, we want to select the graph of the given exponential function values
Let us take a look at the y-intercept
At the y-intercept, the value of x is 0
The y-intercept for this particular equation is 1
This mean that the y-intercept value is 1
hence, the graph will touch the y-axis at the point y = 1
looking at the graphs , only the graph D provides this, and that should be our answer
Can someone help me, please? Also, can someone explain it?
Answer:60m^2
Step-by-step explanation:you have to find the height of the triangle first which is easy bc it’s been split in half so the are now two right triangles. use the pythagorean theorem to determine the height, the height is 12, the formula for the area of a triangle is 1/2bxa and half of the base is already given to you, 5 so 5 x 12 equals 60
what is the measure of angle 1 ? pls i need help
This is a chord, chord angle problem.
Angle 1 = (50 + 56)/2. This leads to 53 degrees.
Answer:
58
Step-by-step explanation:
(50 + 56)/2 = 116/2 = 58
Can a real person help me out all the hackers just want me to delete the app
Answer:
Question 7: x = 36
Question 4: x = 14
Question 9: D
Step-by-step explanation:
Which is the correct solution to the cubic equation,
3/ 3x-2=1
-3
-1
1
3
Answer:
x = 1
Step-by-step explanation:
[tex]\sqrt[3]{3x - 2} = 1[/tex] Cube both sides of the equation
3x - 2 = 1
3x = 3
x = 1
Check: [tex]\sqrt[3]{3(1) - 2} = \sqrt[3]{3 - 2} = \sqrt[3]{1} = 1[/tex] Since x = 1 makes the original equation true, then x = 1 is the solution.
The correct solution for the given equation is x = 1.
What is an equation?An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.
Given is a cubic equation, [tex]\sqrt[3]{3x-2}[/tex] = 1
Solving for x,
[tex]\sqrt[3]{3x-2}[/tex] = 1
Cubing both the sides,
([tex]\sqrt[3]{3x-2}[/tex])³ = 1
3x - 2 = 1
3x = 3
x = 1
Hence, the correct solution for the given equation is x = 1.
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what is 500 times 10
Answer:
500*10=5,000
hope this helps
Answer:
5,000
Step-by-step explanation:
please correct me if im wrong
A quantity with an initial value of 220 grows continuously at a rate of 9.5% per hour. What is the value of the quantity after 255 minutes, to the nearest hundredth?
Answer:
i need help
Step-by-step explanation:
Question :
25+25 -25 = ____
Answer:
25+25-25=25+0=25 is your answer
Answer:
25 +25-25=25
Have a nice day!
Solve for x and show your work! For each equation choose if there are:
• zero solutions for x • exactly one solution for x • or an infinite number of solutions for x.
3x + 5 = 7 + 3x
3x+5 = 7 + 3x
3x+5= 3x + 7
3x + 5 = 3x + 7
3x + 5 - 5 = 3x + 7 - 5
3x = 3x + 2
3x - 3x = 3x + 2 - 3x
Answer : 0 = 2
Hope this helps!
HELP PLEASE!! No websites allowed please, complete 1,2,3, and 4.
NO WEBSITES! OR YOU ARE REPORTED thank you
Answer:
1: 31.5. 2: 5. 3: 4.6 4: 45
11. Cory owns x shoes. Nico has y shoes. The
number of shoes Cory owns is 1 less than 2 times
the number Nico owns. Together they have a total of
11 pairs of shoes. How many shoes does Cory and
Nico have each?
Answer:
5 and 6
Step-by-step explanation: