Answer:
276
Step-by-step explanation:
Given :
Standard deviation (σ) = 2.9 inches
Error margin (E) = 0.45
Confidence interval = 99%
Using the relation to obtain the sample size (n)
n = [(Zcrit * σ) / E]²
Zcritical at 99% confidence interval = 2.576
n = [(2.576 * 2.9) / 0.45]²
n = [7.4704 / 0.45]²
n = 16.600888^2
n = 275.58951
n = 276 samples
Sample size
Rate of change on a graph.- I'll give brainly for the answer, thank you
Answer:
The slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]
Option C is correct option.
Step-by-step explanation:
We need to find the slope (rate of change) of the graph
The formula to calculate slope is: [tex]Slope=\frac{y_2-y_1}{x_2-x_1}[/tex]
Taking two points from the graph: (You can take any two points from the graph)
Point 1 (-4,-3)
Point 2 (-2,0)
We have: [tex]x_1=-4, y_1=-3, x_2=-2, y_2=0[/tex]
Putting values in the formula and finding slope
[tex]Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{0-(-3)}{-2-(-4)} \\Slope=\frac{0+3}{-2+4} \\Slope=\frac{3}{2}[/tex]
So, the slope of graph is [tex]\mathbf{\frac{3}{2}}[/tex]
Option C is correct option.
Here is a tape diagram representing the ratio of red paint to yellow paint in a mixture of orange paint.
What is the ratio of yellow paint to red paint? Type your answer in the format: 3:4
Answer:
2:3
Step-by-step explanation:
So there are 9 cups of red paint
There are 6 cups of yellow paint
Now we need yellow:red
6:9
Simplify it
2:3
So the ratio is 2:3 for yellow to red paint
Answer:
Step-by-step explanation: 2:3
Convert 2.8 radians to degree measure. Round your answer to the nearest hundredth.
Answer:
16.04°
Step-by-step explanation:
[tex]2.8 \: rad = x \: degrees \\ [/tex]
1rad × 180/π = 57.296°
[tex]x = 2.8 \times \frac{180}{\pi} = 16.0428 \\ x = 16.04[/tex]
pls hurry I need this. can y'all answer this ?
hellllllllllllllllllllllllllllppppppppppppppppp
Answer:
11
Step-by-step explanation:
2.2x 5 = 11
A recipe for trail mix uses 7 ounces of almonds with 5 ounces of raisins. (Almonds and raisins are the only ingredients.)
How many ounces of almonds would be in a one-pound bag of this trail mix? Explain or show your reasoning.
Answer:
there are 16 ounces in a pound.
16/7=2.28571428
2 full ounces with a bit left over.
2.29
The blue dot is at what value on the number line?
?
-8
-10
Answer:
I think the answer is negative five (-5)
Question 1
A
b
c
d
PLEASE HELP ASAP!!
Answer:
D)x=1.59 or x=4.41
Step-by-step explanation:
it's the answer
Taylor bought a painting for 1 million yen
Answer:
Yen is the currency of Japan
HELP ME I NEED SOMEHELP
PLZ
PLZ
PLZ
Step-by-step explanation:
2/7
2×2 = 4
___
7×2 = 14
2×3 = 6
___
7×3 = 21
2×4 = 8
___
7×4 = 12
2. 5²- 4 +3 • (9 • 2) /2=
3. 4³ - 4(8-7) +12=
4. 6(5 +4) + 4 – 3 •4 =
5. 10²- 4 + 1 • (9 • 2) /2 =
6. 32 -5 + 8 / 2 • 5 =
7. 3² • (1+4) + 4 – 3 • 4 =
8. 9² • (1+4) + 7 – 3 • 4 =
9. 3³ - (2+4) + 5 – 3 • 3 =
10. (2 + 5) – 3 + 4 • 2 + 1³ =
2) 48
3) 72
4) 48
5) 105
6) 47
7) 37
8) 400
9) 17
10) 13
I hope this helps! Let me know if I get anything wrong so I can fix it.
Which of these statements best describes the relation shown in Item 1?
Answer:
It is a many-to-one relation
Step-by-step explanation:
Given
See attachment for relation
Required
What type of function is it?
The relation can be represented as:
[tex]\left[\begin{array}{c}x\\ \\-5\\-2\\1\\5\end{array}\right][/tex] [tex]\left[\begin{array}{c}y\\ \\10\\11\\4\\10\end{array}\right][/tex]
Where
[tex]x = domain[/tex] and [tex]y = range[/tex]
Notice that the range has an occurrence of 10 (twice)
i.e.
[tex](x_1,y_1) = (-5,10)[/tex] and [tex](x_2,y_2) = (5,10)[/tex]
In function and relations, when two different values in the domain point to the same value in the range implies that, the relation is many to one.
Which is the graph of a quadratic equation that has a negative discriminant
Answer:
The only one
Step-by-step explanation:
The one that is shown has a negative b^2-4ac value.
We know this because the function has no real roots -> that means that they must be complex, which can only occur if b^2-4ac < 0
Answer:
it's D, the last graph.
Step-by-step explanation:
took the unit test review and made a 100
A number is divided by 5 then decreased by 5. It becomes -2. Find the number
Stations 1, 2, and 3 are bus stations. The equation y = 160x represents the number of people that go to Station 1, where y is the total number of people and x is the number of hours since opening. The table shows the same relationship for Station 2, and the graph shows the relationship for Station 3.
Answer:
station three for part a and 2,064 for part b
Step-by-step explanation:
i got the answer correct
Please and thank you
Estimate the sum of 6107 and 2960 to the nearest thousand.
How u do this
Answer:
9,000
Step-by-step explanation:
You would add it together.
6107 + 2960 = 9,067
You round the thousand (9) to the 0.
The rule is that if any number next to the one your rounding is higher then 5 or is 5 then the rounding number will go up, if its 4 or below if won't go up but stay the same.
9,067 would not go up but stay the same because of the rule.
Estimations are guesses from the mind so an exact answer wouldn't work but its whatever.
Write the equation that passes through the following points:
(1,1) and (3,3)
Answer:
y=x
Step-by-step explanation:
That's legit it. Type it into a graphing calc and it goes through(1,1) ad (3,3).
-18/36+12/36
Whats the sum?
Answer:
-1/6
Step-by-step explanation:
what is 40% less than 70
write an equation that describes the function
Answer:
x+7
Step-by-step explanation:
Hope this helps!
Please mark me brainliest if possible. :)
Someone help me
Find the x and y intercepts of the function
jacol jacol boy 103847wks
Gina, Jared, and Edward sat on their grandmother's porch shelling peas for dinner. There were 2 big bowls of peas, and each person shelled an equal amount.
How many bowls of peas did each person shell?
PLSS HELP
Answer: 2/3 bowl
Step-by-step explanation: you divide the 2 bowls by 3 since there are 3 people
In the figure, PQ // RS. Find the value of x.
Answer:
x=57
Step-by-step explanation:
add a line perpendicular to PQandRS
then 90+90+130+116+2x=540
2x=114
x=57
in the figure PQ//RS
the value of x=33
HELPPPPPPPLLL
You-tube music channel plays 4 rap songs to 2 pop songs. The ratio is 4:2. Based on the information provided, how many rap songs does You-tube play for every 8 pop songs? How many pop songs does You-tube play for every 12 rap songs?
Answer:
16
Step-by-step explanation:
4:2
2x4 = 8
4x4=16
Write a numerical expression for the word expression. The product of 7 and 12
Answer:
7x12
Step-by-step explanation:
product is multiplication
4x-1=3(x-1) Please help!
Answer:
x=-2
Step-by-step explanation:
4x-1=3x-3
x=-2
X = -2
Step-by-step explanation:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Sry the app makes the photo so bad quality but anyways can someone please help me
Answer:
B also the full name of vertically angles is called the vertically opposite angle theorem or voat
write an equivalent expression to present patricia total earnings this week 7h + 135 + 5h = ?h + ?
Answer: 12 h + 135
Step-by-step explanation: 7h +135 + 5h = ?h + ?
7h +5h +135
=12h +135
So u combine like terms together which are 7h and 5h which gives you 12 h.And then you have 135 left,so you add 12h to 135.
Ps.If you don't know what like terms are.I will explain down below.
Like terms are variable that are the same.For an example 4y and 3y are like terms .Another example is 1/3 xy and 6xy .
Hope this helps :) and if it does please give brainliest .
prove the given identity
Step-by-step explanation:
3. Let us take apart the right side
1+cos2x = 1 + cos^2x - sin^2x
1 - sin^2x = cos^2x
therefore we have 2cos^2x
Therefore we just have cos^2x/cos^2y = 2cos^2x/2cos^2y, which is true.
4. tan(x/2) = +/- sqrt((1-cosx)/(1+cosx)) using half angle identities for sin and cos.
Therefore tan^2(x/2) = (1-cosx)/(1+cosx)
If we multiply top and bottom by tanx, we get
(tanx - sinx)/(tanx + sinx), which is the right side.