Answer:
if you take -as a common then -(r+8) will come
A polling company plans to create a probability model for a state election. In a telephone survey of 750 residents who stated they were registered to vote, they found that 318 planned to vote for the Democratic candidate, 268 planned to vote for the Republican candidate, with the remainder were undecided. What is a reasonable probability model for the state election?
Select the correct ANSWERS from the list below
54% plan to vote for the Democratic candidate|
22% are undecided.
18% are undecided.
36% plan to vote for the Republican candidate.
46% plan to vote for the Republican candidate.
42% plan to vote for the Democratic candidate
this decides my grade please only answer if you know it
Answer:
22% are undecided
36% plan to vote Republican
42% plan to vote Democratic
Step-by-step explanation:
Take 318 and divide it by 750 to find the democratic vote. Round to the nearest whole number.
318/750 = 0.424
Same for Republican except take 268 and divide by 750.
268/750 = 0.357
Add both percentages together. 36% + 42% = 78%
So there is 22% of the population that either did not answer or are undecided.
The correct answers are:
22% are undecided
36% plan to vote Republican
42% plan to vote Democratic
What is Probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.
The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
The degree to which something is likely to happen is basically what probability means.
Given:
Total Resident = 750
Out of which 318 planned to vote for the Democratic candidate, 268 planned to vote for the Republican candidate.
So, 318/750 = 0.424
= 42.4%
and, 268/750 = 0.357
= 35.7%
So, the percentage who decided to vote = 36% + 42% = 78%
Hence, there is 22% of the population that either did not answer or are undecided.
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The graph represents the amount of money Sal earns for babysitting.
Graph where the x- axis gives time in hours and runs from zero to three and beyond. The y- axis gives earnings in dollars and runs from zero to twenty four and beyond. A straight line intersects the axes at (0, 0). Its coordinates are (5, 4), (1, 8), (1.5, 12), (2, 16), and (2.5, 20)
Part A
What does the ordered pair (2.5, 20) represent in the situation?
A. $2.50 for 20 hours
B. $1 for 0.125 hours
C. $0.125 for 1 hour
D. $20 for 2.5 hours
Part B
Does the graph represent a proportional relationship? Explain.
A.
Yes. The line passes through the origin.
B.
Yes. The line has a variable rate of change.
C.
No. The slope is not constant.
D.
No. The line has a y-intercept greater than 0.
Part C
What is the linear equation represented by the graph?
A. y = 20x + 2.5
B. y = 2.5x + 20
C. y = 8x
D. y = 0.125x
Answer: d, a, and c
Step-by-step explanation:
Part(A)
The ordered pair (2.5, 20) represents $2.50 for 20 hours. the correct option is A.
Part(B),
Yes. the line passes through the origin. The correct option is A.
Part(C),
The linear equation represented by the graph is y = 8x. The correct option is C.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Given that coordinates are (0.5, 4), (1, 8), (1.5, 12), (2, 16), and (2.5, 20).
Part(A),
The ordered pair (2.5,20) represents that the earning is $20 for the work of 2.5 hours.
Part(B),
The slope of the line will be calculated as,
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Slope = ( 8 - 4 ) / ( 1 - 0.5 )
Slope = 4 / 0.5
Slope = 40 / 5
Slope = 8 hours
The y-intercept is calculated as,
y = mx + c
16 = ( 2 x 8 ) + c
c = 16 - 16
c = 0
Hence, the line passes through the origin.
Part(C),
The equation of the line will be written as,
y = mx + c
y = 8x + 0
y = 8x
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In ΔKLM, l = 2.4 inches, m = 4.2 inches and ∠K=159°. Find the length of k, to the nearest 10th of an inch.
Answer: 6.5
Step-by-step explanation: just trust me
The length of side k is approximately 6.56 inches.
What is Law of Cosines?A planar triangle's side's square is equal to the sum of the squares of the other sides minus the product of those sides and the cosine of the angle between them, divided by two.
We can use the Law of Cosines to find the length of side k:
k² = l² + m² - 2lm cos(K)
where K is the angle opposite side k.
In this case, we have l = 2.4 inches, m = 4.2 inches, and K = 159°. Substituting these values into the formula, we get:
k² = (2.4)² + (4.2)² - 2(2.4)(4.2)cos(159°)
Using a calculator to evaluate the cosine, we get:
k² = 5.76 + 17.64 - 19.96(-0.987688)
k² ≈ 43.11
Taking the square root of both sides (and rounding to the nearest tenth), we get:
k ≈ 6.56 inches
Therefore, the length of side k is approximately 6.56 inches.
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IF ANSWER IS RIGHT I WILL MARK BRAINLIEST The length of one side, s, of a shipping box is s ( x ) =cube root of 2x , where x is the volume of the box in cubic inches. A manufacturer needs the volume of the box to be between 108 in.3 and 256 in.3. What are the minimum and maximum possible lengths of s?
Answer:
6 in and 8 inStep-by-step explanation:
Given
The length of the side:
s = ∛2xVolume of the box:
xThe volume is between 108 in³ and 256 in³:
∛(2*108) ≤ s ≤ ∛(2*256)∛216 ≤ s ≤ ∛5126 ≤ s ≤ 8As above, the minimum length is 6 in and maximum length 8 in
How many mathematicians discovered the Law of Sines?
If two sides and a angle are given, then this can be used to find a second angle. With being given the measurements of two sides and an angle, this could result in one or two triangles. Johannes von Muller was the one who was discovered the Law of Sines
Please help!!! I’ll give brainiest
Answer:
Parker is NOT right when he says that it is a division problem 6 ÷ 3.
In fact, it is a multiplication problem 6 × 3 because 6 × 3 = 18 would give us the correct number of total rectangles which are 18
Step-by-step explanation:
Total number of rectangles = 18
As there are 3 rows with each row containing 6 rectangles.
Now, if we multiply 6 with 3, we get the result 18.
Thus,
6 × 3 = 18
Hence, Parker must have mentioned that this arrow of 18 rectangles shows the multiplication problem 6 × 3.
Thus,
Parker is NOT right when he says that it is a division problem 6 ÷ 3.
In fact, it is a multiplication problem 6 × 3 as 6 × 3 = 18 would give us the correct number of total rectangles which are 18.
PLS HELP ME ASAP I DONT HAVE TIME. IT ALSO DETECTS IF ITs RIGHT OR WRONG.
Answer:
It should be C because of the given information is just (any) x 2
Step-by-step explanation:
The Pythagorean Theorem Homework What is the side length of the triangle? 10 cm. 26 cm.
Which of the following are valid names for the triangle below? Check all that
apply.
A. A MODE
1 B. ARM
C. ASEM
DD. AMRD
E. ARMO
F. ADMR
Alana is buying bottled water for a class trip. She has 16 bottles left over from the last trip. She buys bottles by the case to get a good price. Each case holds 24 bottles. How many cases will she have to buy if she wants to have a total of 160 bottles of water?
I need help please and thank you
Answer: The answer is D because all the other statements are false but DAB is equal to BCD
What is the value of y=5x+3 when x = 3
Answer:
y = 5(3)+3
= 15 +3
= 18
y = 18
hope it's helpful ❤❤❤❤
THANK YOU.
The area of a triangle is formed by points of intersection of parabola y=a(x-3)(x+2) with the coordinate axes is 10. Find A if it is known that parabola opens upwards
Answer:
2/3
Step-by-step explanation:
Answer:
a=2/3
Step-by-step explanation:
1. y=a(x-x1)(x-x2) is a formula for a parabola, x1 and x2 being points where y=0 so in the equation y=a(x-3)(x+2), you know
x1=3, x2=-2
2. Find distance between 3 and -2, which is 5
3. bh/2=A --> 5h/2=10 --> h=4 (h is height)
4. when x=0, y=-6a, y=a(0-3)(0+2)
5. because parabola opens upward, the point of the vertex must be (_, -4)
6. -6a= -4
a=2/3
PLEASE HELP!!!!!! if you know how please write how you got
9514 1404 393
Answer:
D. John's boat was farther and faster
Step-by-step explanation:
The equation tells you that at x = 0, Roberta's boat was 10 miles from the dock. The words tell you John's boat started 20 miles from the dock, so his boat started farther away.
John's boat traveled a distance of (55 -20) = 35 miles in 5 hours, so the speed was (35 mi)/(5 h) = 7 mi/h. The equation tells you Roberta's boat traveled 6 miles for each hour, so John's boat was faster.
John's boat was farther and traveled more quickly
__
Additional comment
The variables in Roberta's equation are not defined. In order for the problem to make sense, we must assume that x represents time in hours, and y represents distance in miles.
maddie help please ee
Questions 5-8 I'm very confused on this Determine which tables are linear and tell me the slope for each
help anyone?
i will give brainliest
Answer:
Use desomos i can drop a link for you that will help all your graphing problems
Step-by-step explanation:
Go to desmos . com slash calculator!
Solve for the value of x. 6 ^ (- 2x) = 6 ^ (2 - 3x)
Answer:
x = 2
Step-by-step explanation:
Cause I know & I took the quiz
plz mark brainliest
Plz help !!!
I’ll give crown you
Answer:
n(a): 6
n(a b): 4
n(a c) : 10
n (a b c): 8
n (a b c): 8
n (a b c): 8
Hope it helps :) Brainliest pls
35/16 as a percentage to the nearest 10th
Answer:
35/16 × 100= 875/4% = 218.75 %
Decimal form ≈ 2.2
There is a group of 10 people who are ordering pizza. If each person gets 2 slices and each pizza has 4 slices, how many pizzas should they order?
Answer:
5 pizzas
Step-by-step explanation: If you have 10 people and each will get two slices then you will need 20 pieces of pizza because 10x2 is 20. If each pizza has 4 slices then you will need 5 pizzas because 4/20 is 5.
Answer:
5 pizzas.
Step-by-step explanation:
Find out how many slices the group of 10 people need in total:
2 x 10 = 20 slices
Now, use the total number of slices and divide it with 4 to find how many pizzas they need.
20 ÷ 4 = 5
They need 5 pizzas for 10 people who each get 2 slices.
What is 9 x 9? please show your work and process on finding a solution to this question.
how do you even do this???
Eric orders 3 large cheese pizzas. There is a $2 delivery fee for each pizza. He pays a
total of $42.
Answer:
$12 for each pizza
Step-by-step explanation:
Answer:
$12 each pizza
If 4 cooks can prepare a buffet in 15 mins how long would it take 6 cooks
Answer:
it will probably take the same amount of time since they are cooking the same amount and the food doesn't take any less to cook if there's more people but they could tidy and bring the food out faster but the time to cook the food will remain the same.
Dell Tim and tommy ordered a pizza that was cut into 12 pieces dell had one piece Tim had 3 pieces and tommy had 4 pieces how much of the pizza did they eat
Answer: they had 7/12 or 7 slices out of 12 slices
Step-by-step explanation:
7 is a prime number so you can't a simplify the fraction and the denominator is 12 and 3 plus 4 is 7 which is the numerator
Please help!! I don’t understand how to solve this
Answer:it is c
Step-by-step explanation:
fjhrhgvfj
What is the measure of angle P?
Answer:
60
Step-by-step explanation:
step 1: 180°-130°= 50
step 2: 180-110= 70
step 3: 70+50= 120
step 4: 180°-120°= 60
Maria calculate that she could make 18,000 over the summer instead she ended up making 15,000 what is the percentage difference? round your answer to the nearest percent
Answer:
20%
Step-by-step explanation:
Maria calculate that she could make 18,000 over the summer instead she ended up making 15,000 what is the percentage difference? round your answer to the nearest percent
The formula for Percent difference =
Difference/ Original value × 100
Difference is calculated as:
18000 - 15000 = 3000
Original value = 15000
Hence:
3000/15000 × 100
= 20%
Percent difference = 20%
is this correct or incorrect?