Answer: 28/r+4
Step-by-step explanation: Divide each term by r + 4 and simplify
Answer:
t=28/r+7
Step-by-step explanation:
Six students bought exactly enough pens to share equally among themselves. Which of the following could be the number
of pens they bought?
Answer:
6 12 18 24 30 36 42 48 54 60
Step-by-step explanation:
Answer:
b. 48
i found the answer key lol
(20 points) A random sample of =1200 n = 1200 registered voters and found that 620 would vote for the Republican candidate in a state senate race. Let p represent the proportion of registered voters who would vote for the Republican candidate. Consider testing 0:=.50 H 0 : p = .50 :>.50 H a : p > .50 (a) The test statistic is z =
Answer:
The test statistic is Z = 1.157
Step-by-step explanation:
Given that:
The sample size n = 1200
The sample proportion of those that will vote for the Republican candidate is represented by [tex]\hat p = \dfrac{x}{n}[/tex]
[tex]\hat p = \dfrac{620}{1200}[/tex]
[tex]\hat p =0.5167[/tex]
The null and the alternative hypothesis can be computed as:
[tex]H_o: P=0.50 \\ \\ H_a :P>0.50[/tex]
The formula for the one-sample Z-test for the population proportion can be expressed as:
[tex]Z = \dfrac{\hat p - P_o}{\sqrt{\dfrac{P_o(1-P_o)}{n}}}[/tex]
[tex]Z = \dfrac{0.5167 - 0.5}{\sqrt{\dfrac{0.5(1-0.5)}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.5(0.5)}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{\dfrac{0.25}{1200}}}[/tex]
[tex]Z = \dfrac{0.0167}{\sqrt{2.08333333\times10^{-4}}}[/tex]
Z = 1.157
Testing the hypothesis, from the information given, it is found that the test statistic is z = 1.157.
The null hypothesis is:
[tex]H_0: p = 0.5[/tex]
The alternative hypothesis is:
[tex]H_1: p > 0.5[/tex]
The test statistic is given by:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
In which:
[tex]\overline{p}[/tex] is the sample proportion. p is the proportion tested at the null hypothesis. n is the sample size.For this problem, the parameters are: [tex]p = 0.5, n = 1200, \overline{p} = \frac{620}{1200} = 0.5167[/tex]
Hence, the value of the test statistic is:
[tex]z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}[/tex]
[tex]z = \frac{0.5167 - 0.5}{\sqrt{\frac{0.5(0.5)}{1200}}}[/tex]
[tex]z = 1.157[/tex]
The test statistic is z = 1.157.
A similar problem is given at https://brainly.com/question/24166849
Find the slope of each line
Answer:
[tex]m=-2[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Find points from graph.
Point (1, 2)
Point (2, 0)
Step 2: Find slope m
Substitute: [tex]m=\frac{0-2}{2-1}[/tex]Subtract: [tex]m=\frac{-2}{1}[/tex]Divide: [tex]m=-2[/tex]And we have our final answer!
What is the volume of the figure?
10 cm
5 cm
8 cm
2 cm
What should I write for the explanation??plz help
Answer:
y = - 2 + [tex]\frac{1}{3}[/tex] x
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (6, 0) ← 2 points on the line
m = [tex]\frac{0+2}{6-0}[/tex] = [tex]\frac{2}{6}[/tex] = [tex]\frac{1}{3}[/tex]
The line crosses the y- axis at (0, - 2 ) ⇒ c = - 2
y = [tex]\frac{1}{3}[/tex] x - 2 , or
y = - 2 + [tex]\frac{1}{3}[/tex] x
Answer:
Proof
Step-by-step explanation:
"The y-intercept is - 2" and now I think the best way to prove the gradient is to prove it mathematically taking coordinates of the line and using:
[tex]m = \frac{y - y}{x - x} [/tex]
So I'll take the coordinates (6,0) and (0,-2) and substitute them in the formula for the gradient.
[tex]m = \frac{ - 2 - 0}{0 - 6} = \frac{ - 2}{ - 6} = \frac{1}{3} [/tex]
I hope this helps.
In ΔNOP, o = 3.6 cm, ∠N=119° and ∠O=5°. Find the length of n, to the nearest 10th of a centimeter.
Answer:
36.1
Step-by-step explanation:
Just did it on delta math
y-3x=-2 and 7x- 2y=8
Answer:
thx for the free
Step-by-step explanation:
HELPPPPPPPP!!!!!!!!!!
Answer:
answer is b your welcome
If you cut 10 ounces of butter into 2/5 ounce pieces, how many
2/5 pieces of butter will you have?
1/2(8x-20)=1/4(12x+32)
Answer:
x=18
Step-by-step explanation:
4x-10=3x+8
4x-3x
x-10=8
8+10
Which number is less than 9 5/8
Answer:
9 1/10
Step-by-step explanation:
Please help me with this!!
Answer:
its B
Step-by-step explanation:
What is the answer to this?
-72 = 8d
Answer:
-9 = d
Step-by-step explanation:
Answer:
d= -9
Step-by-step explanation:
16/12 = x/3 what's x
Answer:
16/12 = x/3
x = 4
Step-by-step explanation:
Answer:
X=4
Step-by-step explanation:
16/12 = x/3
Cross multiply on both side
16×3=12x
48=12x
X=48/12
X=4
Value of X is 4
Write the equation of the line, in point-slope form. Identify (x1 y2) as slope (-2,2). Use the box provided to submit all of your calculations and final answers.
Answer:
y + 2 = -1(x - 2)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate y₁ - y coordinate m - slopeStep-by-step explanation:
Step 1: Define
Point (-2, 2)
Point (2, -2)
Step 2: Find slope m
Substitute: [tex]m=\frac{-2-2}{2+2}[/tex]Subtract/Add: [tex]m=\frac{-4}{4}[/tex]Divide: [tex]m=-1[/tex]Step 3: Write equation
Point-Slope Form: y + 2 = -1(x - 2)
And we have our final answer!
60% of $60=======================
Answer:
36
Step-by-step explanation:
Milan bought 13 pounds of rice for $7. How many dollars did he pay per pound of rice?
Answer:
$1.86
Step-by-step explanation:
You would do 13/7 which is 1.85714... which when rounded to the nearest hundredth is 1.86
Hope this helps!
Answer:
About $0.54 per pound
Step-by-step explanation:
7 ÷ 13 = 0.538461
5x + 27 = -48
x=
whats x ?
Answer:
-15
Step-by-step explanation:
5x+27= -48
-27= -27
5x= -75
5 = 5
x= -15
Answer:
x=-15
Step-by-step explanation:
5x+27=-48
-27 -27
5x=-75
x=-15
Which equation represents line E, shown in the accompanying diagram?
A.)y=2x+3
B.)y=1/2x+3
C.)y=3x+1/2
D.)y=3x+2
Please help!!!!
Answer:
First, find the slope:
The slope is 1/2.
Now we have this much of the equation:
y = 1/2x + b
Plug in the point (0,3) to find the value of b
3 = (1/2)(0) + b
b = 3
Your final equation is y = 1/2x + 3.
Step-by-step explanation:
The equation of the line is y = x/2 + 3 which is passing through the points (-4, 1) and (0, 3) option (B) is correct.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that:
The straight line is shown in the coordinate plane.
The equation of the line passing through the points:
(-4, 1) and (0, 3)
From the two-point we can find the equation of the line:
y - 3 = (3-1)/(0+4)[x]
y = 2/4[x] + 3
y = x/2 + 3
Thus, the equation of the line is y = x/2 + 3 which is passing through the points (-4, 1) and (0, 3) option (B) is correct.
Learn more about the linear equation here:
brainly.com/question/11897796
#SPJ2
Which inequalities have -0.5,2.5, and 4 as part of the solution set select all that apply? Z>-3 z<5 z<4 z_< 4 z>0
Answer:
Step-by-step explanation: 1 . z>-3
2. Z<5
Z<=4 the answer are 1,2,4
PLEASE HURRY 45 POINTS!!! which function is best represented by the graph A. g(x)=(1/3) B. g(x)=6(3) C. g(x)=6-(1/3) D. g(x)=6-(3)
Answer:
it is d. i had that question and i got it right
Step-by-step explanation:
The given line in the graph is represented by the equation g(x) = 6 - (3). The correct option is D.
A coordinate plane is a 2D plane that is formed by the intersection of two perpendicular lines known as the x-axis and y-axis. A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.
A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.
In the given graph the straight line is represented by the function g(x) = 6 - ( 3 ). The graph of the line is matched with the answer below.
To know more about the graph follow
https://brainly.com/question/25020119
#SPJ2
which Expression is equivalent to 11 + 22q + 22 - 5q? if correct, I'll reward brainlest
Answer:
I think it would be 33+27q
tell me if this helps! :)
Sorry if it doesn't though :(
Emily bought 2 burgers and 4 drinks for $20. Deja bought 2 burgers and 2 drinks for $14. What was the cost of each burger and each drink? HURRY IN TEST RN
what's the c ??
easy question solve it and get points...
hints : a is 116 and b is 64
Answer:
64 degrees
Step-by-step explanation:
It is the same amount of degrees as the original one.
8. Evaluate the expression for x = 2
and y = 3.
16x0 + 5x2•y1
Answer:
The answer is 60.
Step-by-step explanation:
16(2)0 + 5(2)2•(3)1
(16)(2)(0)+(5)(2)(2)(3)(1)
16×2=32×0=0 + 5×2=10×2=20×3=60×1=60
0+60=60
what is 10 times smaller than 0.6
Answer:
0.06
Step-by-step explanation:
can someone help me with this?
Answer:
X = 25
Step-by-step explanation:
As, 2x + 60° + 4x = 180° (bc they r supplementry)
So, 6x + 30° = 180°
6x = 180° - 30°
6x = 150°
x = 150/6
x = 25
Therefore, answer = 25
Which statement is an example of heat transfer by convection?
Jane's feet burned as she walked across the hot beach sand.
Hot air from the sand rose and was replaced by cool air blowing in from the ocean as a sea breeze.
The black asphalt of the parking lot was much warmer than the green grass surrounding the lot.
People were scattered across the beach, sitting on chairs and towels, warming themselves in the bright sunshine.
GIVING BRAINLIEST!!
Answer: Hot air from the sand rose and was replaced by cool air blowing in from the ocean as a sea breeze.
Step-by-step explanation:
sorry it's late but hopefully it will help others
Heather claims that she can tell exactly how long a family was at the museum by how much the family pays for parking. Is Heather correct? Explain.
Alexis has a rectangular piece of red paper that is 4 centimeters wide. Its length is twice its width. She glues a rectangular piece of blue paper on top of the red piece measuring 3 centimeters by 7 centimeters. How many square centimeters of red paper will be visible on top?
Answer:
11cm^2
Step-by-step explanation:
4x2=8 the missing width
4×8= 32
3×7=21
32-21=11
so it would be 11cm^2
