Answer:
z ∈ { 12, + ∞ >
Alternate form: z ≥ 12, { z l z ≥ 12 }
Step-by-step explanation:
1- Determine the defined range
2- Factor the expression
3- Simplify the root
4- Move the variable to the left
5- Separate into possible cases
6- Solve
7- Find the intersections
8- Find the union
Answer: Z ≤ 12
The correct answer is "Z is less than or equal to 12", Z ≤ 12.
Step-by-step explanation:
Hope this helps.
find the value of x. round to the nearest tenth.
Answer:
33.9219 (Rounded: 33.9)
Step-by-step explanation:
To find Leg B or x we will use cos(a) = b/c
Therefore we have a = 32degrees and c = 40
So
Cos(32) = b/40
0.848 = b/40
b = 0.848 * 40
b = 33.9219
Based on this sample, how many defective beach balls might the manufacturer expect in the next shipment?
Answer:
2000 - 150 + 20=
1,870
as a bag of 16 marbles. If 6 marbles are white, what is the probability of picking a w Out of ss the probability as a percentage: % o
r
Answer:
6/16 and if you want the fraction simplified it would be 3/8. As a percentage 37.5%.
Step-by-step explanation:
Is y = 3/7x -4 is it proportional or nonprotional
Answer:
Not proportional
Step-by-step explanation:
Not proportional because the line has to go through the origin
The y-intercept has to be 0, but here it is given as -4
The graph goes 4 units below the origin on the y-axis.
The correct equation would be y = 3/7x
-Chetan K
Help me please please please
Answer:
3.33lbs. repeating?
Step-by-step explanation:
I think it would just be 10/3 and be 3.33333333 and so on. (im just taking a guess)
A set of mathematics exam scores are normally distributed with a mean of 80.280.280, point, 2 points and a standard deviation of 444 points. What proportion of exam scores are between 828282 and 85.685.685, point, 6 points? You may round your answer to four decimal places.
Answer:
0.2379
lmk if im wrong :)
Approximately 0.2200 or 22.00% of the exam scores are between 82.2 and 85.6.
To find the proportion of exam scores between 82.2 and 85.6, we need to calculate the z-scores for both values and then use the standard normal distribution table (also known as the z-table) to find the proportion.
The z-score for a value x in a normal distribution with mean μ and standard deviation σ is given by the formula:
z = (x - μ) / σ
where x is the value, μ is the mean, and σ is the standard deviation.
Let's calculate the z-scores:
For x = 82.2:
z₁ = (82.2 - 80.2) / 4 = 2 / 4 = 0.5
For x = 85.6:
z₂ = (85.6 - 80.2) / 4 = 5.4 / 4 = 1.35
Now, we can find the proportion of scores between these z-scores using the z-table. The table gives us the cumulative probability up to a certain z-score.
From the z-table, the cumulative probability for z₁ = 0.5 is approximately 0.6915, and the cumulative probability for z₂ = 1.35 is approximately 0.9115.
Now, we can find the proportion of scores between these two z-scores:
Proportion = P(0.5 ≤ z ≤ 1.35)
= P(z ≤ 1.35) - P(z ≤ 0.5)
= 0.9115 - 0.6915
≈ 0.2200
So, approximately 0.2200 or 22.00% of the exam scores are between 82.2 and 85.6.
Learn more about z-scores click;
https://brainly.com/question/32011298
#SPJ3
A survey of 400 randomly selected high school students determined that 925 play organized sports.
A. What is the probability that a randomly selected high school student plays organized sports?
B. Interpret this probability.
Answer:
It is 43%.
Step-by-step explanation:
I took the 400 and divided it by the 925. I got 0.43 and moved the decimal point over 2 spots and the answer is 43%.
Have a good day!
the numbers of motor vehicle fatalities in the united states for the years
4. Find the center and radius of the circle with equation x2 + y2-2x + 4y -
11 = 0
Answer:
(1 , -2) and r = 4
Step-by-step explanation:
x² + y² - 2x + 4y - 11 = 0
x² - 2x + 1 - 1 + y² + 4y + 4 - 4 - 11 = 0
(x - 1)² - 1 + (y + 2)² - 4 - 11 = 0
(x - 1)² + (y + 2)² = 16
We know equation of circle is of the form
(x - h)² + (y - k)² = r²
So, center is (1 , -2) and radius is 4
HELPPPP
In the diagram to the right, GKNM~VRPT.
Find the value of x. Give the scale factor of the left polygon to the right polygon.
Answer: Sorry, I had a different problem than you so this answer isn't correct for the OP but hopefully it shows you how to solve.
x=27/5
The scale factor is 7:3
Step-by-step explanation:
whats this v+2=v+4 please help me
Answer:
this should help
Step-by-step explanation:
U dont have to believe me ;-;
i want to know what 24 multipled by 1.5 is
Answer:
36
Step-by-step explanation:
24×1.5
tips to answer quickly:
1.5 is the same as 1 + [tex]\frac{1}{2}[/tex]
(1×24)+([tex]\frac{1}{2}[/tex]×24)
24+12
36
help i'll give brainlist
Answer:
y = -2
Step-by-step explanation:
The midline is the horizontal line that passes exactly in the middle between the graph's maximum and minimum points.
From inspection, curve has a maximum at y = 1 and a minimum at y = -5
The midline between these is [tex]y=\frac{1-5}{2}=-2[/tex]
So the equation for the midline of this graph is y = -2 (shown in red on the attached graph)
Help me with this I will give brainliest
Answer:
see explanation
Step-by-step explanation:
both linear equations will have the form
y = mx + c ( m is the slope and c the y- intercept )
Chef Mate
c(n) = mn + c
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (2, 14) and (x₂, y₂ ) = (3, 18.5) ← 2 ordered pairs from the table
m = [tex]\frac{18.5-14}{3-2}[/tex] = [tex]\frac{4.5}{1}[/tex] = 4.5 , then
c(n) = 4.5n + c ( n represents ounces )
To find c substitute any ordered pair from the table into c(n)
using (4, 23 )
23 = 18 + c ⇒ c = 23 - 18 = 5
c(n) = 4.5n + 5 ← equation for Chef Mate
--------------------------------------------------------------------
Similarly for Grocery Gourmet
g(n) = mn + c
using (2, 23 ) and (3, 27 ) to find m
m = [tex]\frac{27-23}{3-2}[/tex] = [tex]\frac{4}{1}[/tex] = 4 , then
g(n) = 4n + c
using (4, 31 ) to find c
31 = 16 + c ⇒ c = 31 - 16 = 15
g(n) = 4n + 15 ← equation for Grocery Gourmet
------------------------------------------------------------------
Equate the 2 equations to find when cost is the same
4.5n + 5 = 4n + 15 ( subtract 4n from both sides )
0.5n + 5 = 15 ( subtract 5 from both sides )
0.5n = 10 ( divide both sides by 0.5 )
n = 20
Then when n = 20
c(n) = 4.5(20) + 5 = 90 + 5 = 95
g(n) = 4(20) + 15 = 80 + 15 = 95
Both Chef Mate and Grocery Gourmet charge $95 for 20 ounces of extract
Find the equation of the line.
Through (-8,11); perpendicular to y=9
Perpendicular lines have slope negative reciprocal to each other .
-1/0=ooEquation of line in point slope form
[tex]\\ \rm\Rrightarrow y-y_1=m(x-x_1)[/tex]
[tex]\\ \rm\Rrightarrow y-11=\infty(x+8)[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{y-11}{\infty}=x+8[/tex]
[tex]\\ \rm\Rrightarrow x+8=0[/tex]
[tex]\\ \rm\Rrightarrow x=-8[/tex]
Some formats of line
[tex]\boxed{\begin{array}{c|c}\boxed{\bf Form} &\boxed{\bf Equation} \\ \sf Slope\: intercept\:form &\sf y=mx+b \\ \sf Intercept\:form &\sf \dfrac{x}{a}+\dfrac{y}{b}=1\\ \sf Normal\:form &\sf xcos\omega+ysin\omega=p \\ \sf Two\: point\:form &\sf y-y_1=\left(\dfrac{y_2-y_1}{x_2-x_1}\right)(x-x_1)\\ \sf Point\:slope\:form &\sf y-y_1=m(x-x_1) \\ \sf Standard\:form &\sf Ax+By+C=0 \end{array}}[/tex]
PLEASE HELP ME WITH THIS!! ILL GIVE BRAINLIEST.
Answer:
1. Correct
2. Correct
3. Correct
4. Correct
5. Incorrect
6. Correct
7. Incorrect
8. Incorrect
9. Correct
10. Correct
11. Incorrect
Step-by-step explanation:
At the school store, 3 pens and 2 notebooks cost a total of $12, while 1 pen and 3 notebooks cost a total of $11. This can be represented by the system of equations, where x stands for the cost, in dollars, of pens, and y stands for the cost, in dollars, of notebooks.
What is the cost of one notebook?
A.$2.40
B.$2.75
C.$2.00
D.$3.00
Answer:
D
Step-by-step explanation:
the reason why is because if you put 3 dollars in for the notebooks right you have 3x3=9 and that one pen will be 2 dollars. Now you have 3×2=6 and then the two notebooks will be 6 and you add that and get 12. Hope this helps
Answer:
One notebook is $3.00
Step-by-step explanation:
3x + 2y = $12
1x + 3y = $11
Add -3y to the second equation
x = 11 - 3y
Substitute ( 11 - 3y ) for x in 3x + 2y = 12
3 ( 11 - 3y ) + 2y = 12
33 - 9y + 2y = 12
33 - 7y = 12
Add -33 to each side
-7y = -21
Divide each side by -7
y = 3
substitute 3 for y in x = 11 - 3y
x = 11 - 3(3)
x = 11 -9
x = 2
One notebook is $3.00
In Figure 1, the area of square A is 9 square units, the area of square B is 16 square units, and the area of square C is 25 square units.
In Figure 2, the area of square D is 36 square units and the area of square E is 64 square units.
What is the area of square F in Figure 2?
A.
110 square units
B.
100 square units
C.
90 square units
D.
80 square units
Answer:
b) 100 square units as 36 add 64 is 100
A hardware store stocks 85 reels of garden hose, each
containing 30 m of hose. How many kilometres of
garden hose are stocked by the store?
It's given that, the hardware store stocks 85 reels of garden hose. Each of them measure to be of 30 m.
Total length of hoses = 85 × 30
= 2550 m
= 2.550 km
= 2.5 km (approx.)
2.5 km of garden hose are stocked by the store.
A = 12 and b = 24 ,what Is the area of the pencil
Pleas I really really need help
Answer:
3.5 gallons of gas
Step-by-step explanation:
If m = miles
And the equation is m = 40g
Then: 140 = 40g
40g/40 = 140/40
g = 3.5 gallons of gas.
The car used "3.5" gallons of gas.
PLEASE HELP ME QUICKKK, FIRST CORRECT PERSON GETS BRAINLIEST
Answer:
answer d and e
Step-by-step explanation:
First, you need to figure out the radius of B.
As radius of A is 6 in, 20% of 6in would be 1.2in. So total radius of B = 6+1.2 = 7.2
Now you get the radius of B, calculate th area of B using the formula πr^2.
= π(7.2)^2 = 162.86 = area of B
Now, all answers except D and E is smaller than B. So, the answer would be D and E.
Answer:
A, E
Step-by-step explanation:
The radius of Circle B is 20% greater than 6 inches, so is ...
r = (6 in)(1 +20%) = 1.2×6 in = 7.2 in
The area of Circle B is ...
A = πr²
A = π(7.2 in)² ≈ 162.86 in²
The offered answer choices (and the area of Circle B) in order from least to greatest are ...
[B]51.84, [C]113.04, [F]148.49, [D]162.78,
(circle B)162.86,
[A}189.31, [E]203.15
Choices A and E are greater than Circle B's area.
Help me please please please
Answer:
25.6
Step-by-step explanation:
Add 6.4 to all the sides and add them all together-
6.4+6.4+6.4+6.4 = 25.6
Help Iḿ stuck on this problem
Answer:
774
Step-by-step explanation:
38*15=570
17*12=204
570+204=774
help me pls ヾ(•ω•`)o
Now,
Volume = L × B × H
Volume = (L × B) × H
Volume = Area × H
Volume = 10/3 × 7/5 units
V = 70/15 = 14/3 or 4.7 cubic units
Thus, The answer is 14/3 or 4.7 cubic units
-TheUnknownScientist 72
3) Write the following numbers from highest to lowest: 6288, -8, 2301, -282, 202
Answer:
6288 2301 202 -8 -282
im genius
f(x) = 3x^2 - 9x + 2
What's the axis of symmetry?
What's the coordinate of the vertex?
Answer:
1) Axis of symmetry = [tex]\frac{3}{2}[/tex]
2) Vertex form = [tex]y=3(x-\frac{3}{2} )^{2} -\frac{19}{4}[/tex]
Rewrite in vertex form and use this form to find the vertex (h,k).
[tex](\frac{3}{2} ,-\frac{19}{4} )[/tex] (coordinates of the vertex)
Step-by-step explanation:
Vocabulary:
Axis of symmetry- A line that passes through a figure in such a way that the part of the figure on one side of the line is a mirror reflection of the part on the other side of the line.
Vertex- The point on an angle where the two sides intersect.
Answer
Thats the answer below!
Step-by-step explanation:
are -8h - 3.5 and -0.5(16h - 7) equalivalent expressions?
Answer: Yes because they both have the same total
Step-by-step explanation:
what is the total cost of a $12.60 item when 7 1/2% (0.075) sales tax is added?
Answer:
12.60 x 0.075 = $0.945
Total cost:- 12.60 plus 0.945 = $13.55
Step-by-step explanation:
please help. its on zearn name the coordinates of each shape
Answer:
circle: 2, 1/2
square: 1 1/2, 3 1/2
triangle: 0, 4 1/2
Answer:
Square X-coordinate: 1 and 1/2
Square Y-coordinate: 3 and 1/2
Triangle X-coordinate: 0
Triangle Y-coordinate: 4 and 1/2
Step-by-step explanation: