You will only get brainliest if you answer the question correctly and explain it. All other answers will be deleted!!!
in this diagram/picture, which equation could you prove to be true in order to conclude that the lines are parallel?
Answer Choices:
A)
[tex] \frac{c - a}{b} \times \frac{d}{e } = - 1[/tex]
B)
[tex] \frac{c - a}{b} \times \frac{ - d}{e} = - 1[/tex]
C)
[tex] \frac{c - a}{b} = \frac{ - d}{e} [/tex]
D)
[tex] \frac{c - a}{b} = \frac{d}{e} [/tex]
Answers
Answer:
b/a=c/d Two lines are parallel to each other if they have the same slope. So let's look at the options and see which one matches that statement. b/aâ‹…c/d=â’1 * This is checking to see if the two lines are perpendicular to each other. Almost the exact opposite of parallel. So this is the wrong answer. b/a=c/d * b/a is a legitimate slope. c/d is also a good slope. And they're being checked to see if they're equal to each other. So this is the correct answer. But let's see if the next two options will give us a chuckle or two. b/a=d/c * b/a is OK. d/c almost looks ok, check the figure. And d/c is NOT a slope. The slope is delta Y over delta X. And d/c is delta X over delta Y. The inverse of the slope. So comparing those two values is meaningless. So it's a wrong answer. b/aâ‹…d/c=â’1 * And they're trying the inverse of the slope trick again. WRONG. And they're checking if it's perpendicular. Also wrong. So definitely not a good choice.
Step-by-step explanation:
Related Questions
Please help me!!! I will make you brainiest!!!!!!
Answers
Answer:
a
Step-by-step explanation:
you take 236 and divide it by 4
236÷4=59 or 59/1
The measure of an angle is six more than twice the measure of its
complement. Find the measure of the larger angle.
The larger angle is:
Answers
Answer:
58
Step-by-step explanation:
Let the angle = x
Let the complement = 90 - x
2x = (90 - x) + 6
2x = 96 - x
3x = 96
x = 96/3
x = 32
============
The angle = 32
The complement = 90 - 32 = 58
Which number is divisible by 2,9 and 10
(a) 45
(b) 60
(c) 90
(d) 150
Answers
Answer: c
Step-by-step explanation: we know that odd numbers can’t be divided by 2 so take a out, then we see that 90 is the only one because 90/2=30, 90/9=10, and 90/10=9
Answer:
Yes, the answer is C. 90..
figure B is a scale copy of figure A. 3 by 3 3 by 9
Answers
I hope this is right.
Answer: 8
There are 8 figure A's in Figure B.
Hope this helps!
every morning at breakfast, joey eats one serving of cereal with one serving milk. each box of cereal contains 10 servings and each carton of milk contains 8 servings. if joey opens a new box of cereal and a new carton of milk today, how many days will it take him to empty a box of cereal and a carton of milk on the same day?
Answers
Answer: it will take 5 days
Step-by-step explanation:
on the 5th day joey will be opening his 5th carton of milk and is 4th box of cereal
The difference of two supplementary angles is 58 degrees. Find the measures of the angles.
Answers
Answer:
The measure of the angles are 61° and 119°
Step-by-step explanation:
Let the first angle = x°
let the second angle = y°
The sum of two supplementary angles = 180°
x° + y° = 180° ----- equation (1)
based on the given question; "the difference of two supplementary angles is 58 degrees."
x° - y° = 58° ------- equation (2)
from equation (2), x° = 58° + y°
Substitute the value of x into equation (1)
(58° + y°) + y° = 180°
58 + 2y = 180
2y = 180 -58
2y = 122
y = 122 / 2
y = 61°
The second angle is given by;
x° = 58° + y°
x = 58° + 61°
x = 119°
Thus, the measure of the angles are 61° and 119°
question 3 I mark as brainliest
Answers
What’s the slope of -1,-5 and 4,-1
Answers
Answer:
5/4
Step-by-step explanation:
You are going up 5 and over 4.
Answer:
wrong, its would be 4/5.
Step-by-step explanation:
The slope formula is m= y2-y1/ x2- x1
Therefore, m = -1-(-5)/4-(-1)
m= 4/5
4. Mel had $35.00 and withdrew 200$ from his bank account. He bought a pair of pants for
$34.00 and 2 shirts for $16.00 each. Give the final formula and determine how much money
Mel had at the end of the shopping day.
Can you answer
Answers
Answer:$185
Step-by-step explanation:
$35+$200=$235
$235-$34=$201
$201-$16=$185
What is the common denominator for the following fractions? 4/6 , 7/12 , 9/24 , 5/4 , 7/8
Answers
Answer: The common denominator for:
4/6 =12
7/12= 84
9/24=72
7/8= 56
Hope you have a nice day/night :)
Consider the following game, played with three standard six-sided dice. If the player ends with all three dice showing the same number, she wins. The player starts by rolling all three dice. After this first roll, the player can select any one, two, or all of the three dice and re-roll them. After this second roll, the player can again select any of the three dice and re-roll them one final time. For the following questions, assume that the player used the following optimal strategy: if all three dice match, the player stops and winds; if two dice match, the player re-rolls the die that does not match; and if no dice match, the player re-rolls them all.
Requied:
a. Find the probability that all three dice show the same number on the first roll.
b. Find the probability that exactly two of the three dice show the same number after the first roll.
c. Find the probability that the player wins, conditioned on exactly two of the three dice showing the same number after the first roll.
Answers
Answer:
a
[tex]P(A) = \frac{1}{36}[/tex]
b
[tex]P(B) = \frac{15}{36}[/tex]
c
[tex]P(U) = \frac{11}{36}[/tex]
Step-by-step explanation:
From the question we are told that
The number of dice is [tex]n = 3[/tex]
Generally for all three dice to show the same number the second and the third dice must have the same outcome as the outcome of the first dice.
This means that the number of outcome the first die can have is 6 (6 sides), the number of outcome which the second and the third dice can have is 1 (they must match the first )
So the probability that all three dice show the same number on the first roll is mathematically represented as
[tex]P(A) = \frac{6}{6} * \frac{1}{6} * \frac{1}{6}[/tex]
=> [tex]P(A) = \frac{1}{36}[/tex]
Generally for two of the three dice show the same number after the first roll then the number of outcome for one of the dice would be is 6 , the number of outcome for another one must be 1(i.e it must match the first ) , the number of outcome for the remaining one must be 5 (i.e it can show any of the remaining 5 sides which the first and second dice are not showing )
Now the number of ways of selecting this 2 dice that show the same number from the 3 dice is mathematically represented as
[tex]N = ^3C_2[/tex]
Here C stands for combination
So
[tex]N = ^3C_2 = 6[/tex]
So the probability that exactly two of the three dice show the same number after the first roll is mathematically represented as
[tex]P(B) = N \frac{1}{6} * \frac{5}{6}[/tex]
=> [tex]P(B) = \frac{15}{36}[/tex]
Generally from the question we are told that if two dice match, the player re-rolls the die that does not match.
Now the probability that the die that did not match the first time will match the second time is
[tex]P(E ) = \frac{1}{6}[/tex]
Generally if that one die does not show the same number in the second round , the probability that it will match in the third round is
[tex]P(R) = \frac{5}{6} * \frac{1}{6} [/tex]
Generally the probability that he wins (i.e when all three are showing the same number ) and exactly two is showing the same number is mathematically represented as
[tex]P(K) = P(E)* P(B) + P(R)* P(B)[/tex]
=> [tex]P(K) = \frac{1}{6} * \frac{15}{36} + \frac{5}{6} * \frac{1}{6} * \frac{15}{36}[/tex]
=> [tex]P(K)= \frac{165}{1296}[/tex]
So the probability that the player wins, conditioned on exactly two of the three dice showing the same number after the first roll is mathematically represented as
[tex]P(U) = \frac{\frac{165}{1296}}{\frac{15}{36} }[/tex]
=> [tex]P(U) = \frac{11}{36}[/tex]
Joel is training for soccer season. On Monday, Joel exercises for 20 minutes before school, and 25%, percent of that time is spent playing soccer.
On Monday, Joel exercises for 60 minutes after school, and 40%, percent of that time is spent playing soccer. What is the total amount of time, in minutes, that Joel plays soccer on Monday?
Answers
Answer:46
Step-by-step explanation:
PLEASE HURRY!!!
a
Undefined
b
Negative
c
Zero
d
Positive
Answers
Answer:
undefined
Step-by-step explanation:
Since this is a vertical line, it has an undefined slope.
m = change in y/ change in x
But x does not change
m = change in y /0
We cannot divide by zero so the slope is undefined
simplify √80 - 2√45
Answers
The simplification of the given equation is [tex]-2\sqrt{5}[/tex].
What is simplification?Simplification is the process of substituting a complex mathematical expression with a simpler (typically shorter) counterpart.
In algebra, simplification of algebraic expressions. Logic optimization is the simplification of boolean expressions.
Simplification of the above equation are:
[tex]=\sqrt{80} - 2\sqrt{45}\\\\=4^2\sqrt{5}-2(\sqrt{3^2}\times \sqrt{5})\\\\=4\sqrt{5} - 6\sqrt{5}\\\\=-2\sqrt{5}[/tex]
Therefore, the simplified value of the given equation are [tex]-2\sqrt{5}[/tex].
Learn more about the simplification, refer to:
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The average retirement age for a certain country was reported to be years according to an international group dedicated to promoting trade and economic growth. With the pension system operating with a deficit, a bill was introduced by the government during the summer to raise the minimum retirement age from 60 to 62. Suppose a survey of retiring citizens is taken to investigate whether the new bill has raised the average age at which people actually retire. Assume the standard deviation of the retirement age is years. Using , answer parts a through c below.a. Explain how Type I and Type II errors can occur in this hypothesis test. A Type I error can occur when the researcher concludes the average retirement age ? did not increase, increased, but the average retirement age ? increased. did not increase. A Type II error can occur when the researcher concludes that the average retirement age ? did not increase, increased, ?when, in? fact, the average retirement age ? did not increase. increased.b. Calculate the probability of a Type II error occurring if the actual population age is 57.4 years old. The probability of committing a Type II error is _______ . ?(Round to three decimal places as? needed.)c. Calculate the probability of a Type II error occurring if the actual population age is 58.9 years old. The probability of committing a Type II error is _______ . ?(Round to three decimal places as? needed.)
Answers
The missing figures in the question can be seen below.
The average retirement age = 56.1 years ...
The number of a survey of retired citizen = 49
The standard deviation of the retirement age is 6 years.
Using alpha ∝ = 0.02
Answer:
Step-by-step explanation:
From the given options in the first question in the given information.
Type I error can take place when the researcher concludes the average retirement age increased, but the average retirement age did not increase.
A Type II error can take place when the researcher concludes that the average retirement age did not increase, but the average retirement age increased.
Recall that:
population mean = 56.1
sample size = 49
standard deviation = 6
At the level of significance of 0.02, using the Excel function (=Normsinv(0.02))
The critical value for z = 2.054
Standard error = [tex]\dfrac{\sigma}{\sqrt{n}}[/tex]
=[tex]\dfrac{6}{\sqrt{49}}[/tex]
= 6/7
= 0.857
The rejection region [tex]\overline X[/tex] = [tex]\mu +Z_{\alpha/0.02}*\sigma_x[/tex]
[tex]\overline X[/tex] = [tex]56.1+2.05374891*0.857[/tex]
[tex]\overline X[/tex] = 57.86
P(Type II error) is as follows:
[tex]P(\overline X < 57.86| \mu = 57.4) = P( Z< \dfrac{\overline X - \mu }{\sigma_x})[/tex]
[tex]= P( Z< \dfrac{57.86-57.4}{0.857})[/tex]
[tex]= P( Z< 0.537)[/tex]
From z tables;
P (Type II error) = 0.704
P(Type II error) is as follows:
[tex]P(\overline X < 57.86| \mu = 58.9) = P( Z< \dfrac{\overline X - \mu }{\sigma_x})[/tex]
[tex]= P( Z< \dfrac{57.86-58.9}{0.857})[/tex]
[tex]= P( Z<-1.214)[/tex]
From z tables;
P (Type II error) = 0.1124
A bicycle is traveling at 17 miles per hour.
How many feet will it cover in 60 seconds?
Round your answer to the nearest tenth of a foot.
Answers
Answer:
The bicycle will cover about 943.36 feet.
Step-by-step explanation:
1 mile = 5280 ft
5280 x 16 = 84480
84480 / 60 = 1408 ft per minute
40 seconds of 1 minute = .66 or .67 of a minute
1408 x .67 = 943.36
- 4v-3 = -2v + 5
V =
Answers
Answer:
V= -4
Step-by-step explanation:
add 2v to the left and you get -2v-3=5
-2v-3=5 add 3 to the right and you get -2v=8
divide 8 by -2 and you get v= -4
Angel’s partner, Lisa, owns the remaining portion of the bakery. Write a simplified ratio to represent Angel’s ownership to Lisa’s ownership in the bakery.
Answers
Answer:
5:3
Step-by-step explanation:
30. While making a dessert, Jane used
9/10 of a scoop of brown sugar as well
as 1/2 of a scoop of white sugar. How
much more brown sugar did Jane use?
Answers
Answer:
Jane used 2/5 of a scoop more of brown sugar than she did with white sugar.
Step-by-step explanation:
If you want to find how much more something is from something else, you subtract. So, subtract 9/10-1/2. If you want to subtract, they should both have the same denominator. So, 9/10-1/2 is the same as 9/10-5/10. 9/10-5/10 is equal to 4/10 which is simplified to 2/5.
The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 weeks, 18 of each type were mailed from the Network Distribution Center in Atlanta, Georgia, to Des Moines, Iowa. The total delivery time in days was recorded. Minitab was used to perform the ANOVA. The results follow:
Source DF SS MS F P
Factor 3 1.83 0.61 2.77 0.048
Error 68 15.28 0.22
Total 71 17.11
Level N Mean StDev
Priority Mail Express 18 2.873 0.477
Priority Mail 18 3.040 0.574
First-Class Mail 18 3.273 0.462
Standard Mail 18 3.228 0.360
Using the ANOVA results, compare the average delivery times of the four different types of mail.
Identify the null hypothesis and the alternate hypothesis.
Null hypothesis:
A) H0: μ1 ≠ μ2 ≠ μ3 ≠ μ4
B) H0: μ1 = μ2 = μ3 = μ4
A) or B)
Alternate hypothesis:
A) H1: At least one mean is different.
B) H1: All means are equal.
A) or B)
What is the decision rule? Use the 0.05 significance level. (Round your answer to 2 decimal places.)
Reject H0 if F>
Use the 0.05 significance level to test if this evidence suggests a difference in the means for the different types of mail.
H0 is (rejected/not rejected)
Answers
Answer:
Null hypothesis:
B) H0: μ1 = μ2 = μ3 = μ4
Alternate hypothesis:
A) H1: At least one mean is different.
Reject H0 if F>2.74
H0 is rejected
Step-by-step explanation:
Null hypothesis always contain equality so, null hypothesis would be
B) H0: μ1 = μ2 = μ3 = μ4.
Alternate hypothesis doesn't contain equality so, alternate hypothesis would be
A) H1: At least one mean is different.
Decision rule will be "reject null hypothesis if calculated F is greater than critical value of F".
Critical value of F is F0.05(3,68)=2.74.
So, decision rule will be Reject H0 if F>2.74.
As, calculated F 2.77 is greater than 2.74 so, we reject our null hypothesis and conclude that there is sufficient evidence to suggests a difference in the means for the different types of mail at 5% level of significance.
Help i need good grade on this or ill never make it
Answers
Answer:
magazine ads - 11, 33, 44, 66
newspaper ads - 2, 6, 8, 12
help me with this question pleaseee !!!!!!!!
Answers
The Sweet Smell Fertilizer Company markets bags of manure labeled "not less than 60 lb dry weight." The packaged manure is a combination of compost and sewage wastes. To provide good-quality fertilizer, each bag should contain at least 30 lb of compost but no more than 40 lb of sewage. Each pound of compost costs Sweet Smell 5¢ and each pound of sewage costs 4¢. Use the Linear Programming method to determine the least-cost blend of compost and sewage in each bag.
Answers
Answer and Step-by-step explanation:
Let
Compost lb per bag = x1 = 30
Compost cost per lb = 0.05
Sewage lb per bag = x2 = 40
Sewage cost per lb = 0.04
Minimize cost = 0.5 x1 + 0.4 x2
Constraints:
Bags of manure labeled “not less than 60 lb dry weight”
X1 + x2 ≥ 60
X1 ≥ 30
X2 ≥ 40
At x1 = 30 and x2 = 40
C = 0.05(30) + .04(40)
= 1.5+ 1.6
=$3.1
At x1= 60 and x2 = 0
C= 0.05(60) + 0.04(0)
= 3 + 0
=$3.00
At x1 = 30 and x2= 30
C = 0.05(30) + 0.04(30)
= 1.5 + 1.2
=$2.7
Dan constructs a scale model of a building with a rectangular base. His model is
2 inches in length and 1 inch in width. The scale on the model is 1 inch = 35 feet.
What is the actual perimeter, in yards, of the base of the building?
und
Answers
Answer:
210 feet
Step-by-step explanation:
2 inches=70
1 inch=35
(70+35)×2=210
Can anybody help me with this problem?
Answers
Answer:
a point a line that's the answer:
Answer:
yes but what is the question
Help me with this question if you don’t mind
Answers
Answer:
D
Step-by-step explanation:
if AB is congruent to AC that means both are 76 degrees so subtract that from the total degrees of a whole triangle which is 180 that gives you A which is 28.
Hope it helps :)
Which Is the Best estimare of The área of The figure in square centimeters (as shown down) l need It in 5min
Answers
Answer:
38.28cm²
Step-by-step explanation:
The area of the figure can be determined by expression the figure as two shapes.
A semicircle and trapezium;
Area of shape = Area of semicircle + Area of trapezium
Now;
Area of semicircle = [tex]\frac{\pi r^{2} }{2}[/tex]
Where r is the radius, which is [tex]\frac{4}{2}[/tex] = 2cm;
Area of semicircle = [tex]\frac{3.142 x 2^{2} }{2}[/tex] = 6.28cm²
Area of trapezium;
= [tex]\frac{1}{2} (a + b)h[/tex]
a and b are the base length = 6cm and 10cm
h is the height = 4cm
Input the parameters and solve;
= [tex]\frac{1}{2} (6 + 10) 4[/tex]
= 32cm²
The area of the shape = 6.28cm² + 32cm² = 38.28cm²
Some college roommates want to make pancakes for their neighbors. They need 7 cups of flour, but only have a 1/6 cup measuring cup. How many times will they have to fill their measuring cup?
Answers
Answer:
42
Step-by-step explanation:
They have to fill the measuring cup by 42 times.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that some college roommates want to make pancakes for their neighbors. They need 7 cups of flour but only have a 1/6 cup measuring cup.
The number of times the cup is to be used will be calculated by dividing the numbers below:-
Number = 7 / ( 1 / 6 )
Number = 7 x 6
Number = 42 times
Therefore, they have to fill the measuring cup by 42 times.
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Jamal goes to a fast food restaurant and orders some tacos and burritos. He sees on the nutrition
menu that tacos are 200 calories and burritos are 370 calories. If he ordered 6 items and consumed
a total of 1880 calories, how many tacos and how many burritos did Jamal order and eat?
Answers
Answer:
4 burritos and 2 tacos
Step-by-step explanation:
burritos 370 x 4 = 1480
tacos 200 x 2 = 400
1480 + 400 = 1880 :)
Answer:
Therefore, if c represents the the number of calories in a taco, then the number of calories in a burrito can be represented as 6c.
Step-by-step explanation:
A taco has the calories of a burrito. This statement can be translated directly to the equation below.
Substitute c into the equation to represent the calories in a taco.
Divide both sides by .
{1}/{6}
Therefore, if c represents the the number of calories in a taco, then the number of calories in a burrito can be represented as 6c.
2P - 3 > P + 6
Thanks!
Answers
Answer:
P > 9
Also here is the inequality graphed.
Step-by-step explanation:
Start by subtracting P on both sides.
2P − 3 (−P ) > P + 6 (− P)
P − 3 > 6
Next you will need to add 3 to both sides.
P − 3 (+3) > 6 (+3)
P > 9