Answer:
c = 30°
d = 60°
Step-by-step explanation:
Angle ZWC is a 90° angle
Angle YWX is a 60° angle
add them together and you get 150°
180 - 150 = c = 30°
c + d + 90° = 180°
substitute
30° + d + 90° = 180°
combine like terms
120° + d = 180°
subtract 120° from both sides
d = 60°
hope this helps!!
Answer:
c is 30 and d is 60
Step-by-step explanation:
I did it for hw
Standard Notations 3.042 x 10²
74100
170000
36000
I believe this is right!
pleaseeee explain !!!
A is the answer because if we want the unit rate we do
2/3÷2/3 and 15 1/5, we can turn 15 1/5 into a improper fraction first so 76/5 and we do 76/5 ÷2/3 which is equal to
76/5×3/2=114/5
114/5 simplifies into 24 4/5.
so Naomi can travel 24 4/5 gal per mile.
Hope this helps!
A psychologist would like to evaluate the relationship between verbal skills as measured by the
scholastic achievement test (sat) and performance on an anagram task. (anagrams are words with
the letters scrambled. the task is to unscramble the letters and identify the word. ) each participant is
given a set of 10 anagrams, and the psychologist records how much time is needed to solve all 10.
participants also provide the researcher access to their sat scores. all parametric assumptions have
been met. what statistical test would you use to analyze the data from this study?
o chi-square test
regression
independent samples t test
o pearson correlation
the sat score equation will be 650.556 - 1.171*Anagram Time.
What is a confidence interval?
A confidence interval (CI) for an unknown parameter in frequentist statistics is a range of estimations. The most popular confidence level is 95%, but other levels, such 90% or 99%, are occasionally used for computing confidence intervals. The fraction of related CIs over the long run that actually contains the parameter's true value is what is meant by the confidence level.
A psychologist would like to evaluate the relationship between verbal skills as measured by the
scholastic achievement test (sat) and performance on an anagram task.
The Pearson Correlation Coefficient is -0.956.
The SAT and anagram performance are strongly inversely correlated.
The regression equation is:
SAT Score = 650.556 - 1.171*Anagram Time
Hence the sat score equation will be 650.556 - 1.171*Anagram Time
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what is the property of (9x2)x6=9x(2x6)
Hi :)
The property illustrated here is
the Associative property :\(a(bc)=(ab)c\)So we actually moved the parentheses, but the resulting product is still the same number (remember, variables represent numbers)Learn more;work harder
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Answer quicker than quickly
Answer:
Y is (0,-2.5)
X is (-2,0)
Step-by-step explanation:
PLEASE SOMEONE HELP ME!!!!! THIS IS MY 3RD TIME ASKING THIS QUESTION!!!!
PLEASE Fill In The Blanks!
substitution is the best method to use when one variable is already ____ or when one variable can be easily ____.
Answer:
It's a guess.
1 known
2 cancelled.
Hope this helps!
And I am sorry if it doesn't
write 34,000 , 43,000,000 , 0.0000087 , 91,000,000 , 16.6 x 10^3 , and 0.00372 x 10^-3 in scientific notation
To write a number in scientific notation you must know:
1. A number in scientific notation is written as the product of a number (integer or decimal) and a power of 10
2. A number can be converted to scientific notation by increasing the power of 10 by one for each place the decimal point is shifted to the left.
Then so:
\(34000=3,4x10^3\)\(43000000=4.3x10^7\)\(0.0000087=8.7x10^{-6}\)\(91000000=9.1x10^7\)\(16.6x10^3=1.66x10^4\)\(0.00372x10^{-3}=3.72x10^{-6}\)If m || k and m || , then
k
m
3
2
Please help
Answer: \(k \parallel l\)
Step-by-step explanation:
Lines that are parallel to the same line are parallel.
What is 3/4 as a percentage?
Answer:
75%
Hope this helps!!!
Step-by-step explanation:
Answer:
0.75
Step-by-step explanation:
Imagine four quarters, 1 quarter equals 25 cents. So adding 2 more quarters, 3 total, would equal 75 cents. 25 + 25 + 25 = 75. Your answer is 0.75! Hope this helps!
Edit: MY BAD!! I THOUGHT YOU SAID DECIMAL, IGNORE ME!!!
From the equation y=3.5x identify the constant of proportionality
Answer:
3.5
Step-by-step explanation:
Answer:
3.5
Step-by-step explanation:
y = kx is the equation of direct variation where k is the constant of proportionality
PLEASE HELP DUE TODAY
Evaluate
3^ square root5 square root5
divided by 3^ square root 5 5^
Answer:
It's the last option: 5^-5/6.
Step-by-step explanation:
Converting to fractional exponents:
= 5^1/3 * 5^1/2 / 5^(5*1/3)
= 5^5/6 / 5^5/3
= 5^(5/6 - 5/3)
= 5(5/6 - 10/6)
= 5^-5/6
The line AB passes through the points A(-3, 4) and (k, 12).
The gradient of AB is 4.
Work out the value of k.
Answer:
k = - 1
Step-by-step explanation:
calculate the gradient (slope) m of AB using the slope formula and equate to 4
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (- 3, 4 ) and (x₂, y₂ ) = (k, 12 )
m = \(\frac{12-4}{k-(-3)}\) = \(\frac{8}{k+3}\) , then
\(\frac{8}{k+3}\) = 4 ( multiply both sides by (k + 3 ) )
4(k + 3) = 8 ( divide both sides by 4 )
k + 3 = 2 ( subtract 3 from both sides )
k = - 1
INSTANT HELP PLEASE PLEASE PLEASE
you have some quarters and pennies worth $3.75 and 39 coins altogether. how many of each coin do you have?
There are 14 quarters and 25 number of pennies
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that some quarters and pennies worth $3.75
0.25x+0.01y=3.75
There are 39 coins altogether
x+y=39
x=39-y
Now plug in x value in 0.25x+0.01y=3.75
0.25(39-y)+0.01y=3.75
9.75-0.25y+0.01y=3.75
9.75-0.24y=3.75
9.75-3.75=0.24y
6=0.24y
Divide both sides by 0.24
25=y
x+y=39
x=14
Hence, there are 14 quarters and 25 number of pennies
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What is the distance between the points located at (-7, -18) and (-7, 25)?
07 units
43 units
O-43 units
O-7 units
Answer:
43 units
Step-by-step explanation:
(-7, 25)
-(-7, -18)
7-7=0
25-(-18)
two minuses next to each other cancel or as my teacher taught, cha-ching
Which means turning both minus signs into plus(25+(+18)). so, 25+18=
43.
Therefore, (-7, -18) is 43 units away from (-7, 25)
You have just signed up for a broadband home internet service that uses coaxial cable. which connector type will you most likely use?
Answer:
F type connector
Step-by-step explanation:
Use an F-type connector for broadband cable connections that use coaxial cable.
The F connector is a coaxial RF connector commonly used for "over the air" terrestrial television, cable television and universally for satellite television and cable modems,
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F type connector
The F-connector is a coaxial RF connector commonly used for "wireless" terrestrial television, cable television, and common for satellite television and cable modems, usually with RG-6/U cable or with RG -59 / U.F connector is also known as threaded connector. There are two main types: 7mm (6.8mm) is the most common and used in coaxial cable, and 5mm connector is used in thin coaxial cable commonly used in satellite system.
The F-connector is an accessory that connects a coaxial cable to an electronic device or wall outlet.
Type F connectors are highly mechanical and electrically stable coaxial screw connectors for cable television (CATV), set-top boxes, cable modems and satellite television applications up to 4 GHz
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The 40-hour work week did not become a U.S. standard until 1940. Today, many white-collar employees work more than 40 hours per week because management demands longer hours or offers large monetary incentives. A random sample of 26 white-collar employees worked on average 42.08 hours per week. Is there any evidence that the true mean number of hours worked per week by white-collar employees is greater than 40? Assume that the population standard deviation is 3.39 hours. Please use the exact value (from R) for all critical values. c) Is there any evidence to suggest the true mean number of hours worked per week by white-collar workers is greater than 40? Perform the hypothesis test at a 0.5% significance level. (0.5 pts.) Calculate the test statistic. 3.13 You are correct. Your receipt no. is 152-5185 Previous Tries (0.5 pts.) Calculate the p-value. Please write your answer in scientific notation using an E for the exponent and including at least 3 decimal places. For example, 1.234 x 10-5 would be written as 1.234E-5. 8.782x10-4 (0.5 pts.) d) Calculate the appropriate 99.5% bound that is consistent with what you did in parts b) and c).
The necessary assumptions are to get the sample for random sampling and ensure they are normal.
a. The required assumptions to form hypothesis are:Sample has to be drawn from random sampling.Sample has to be approximately normalThe samples have to be independentb. The standard deviation is known hence we have to make use of the z distribution.
c. test statistic42.08 - 40 / (3.39 /√26)
= 2.08 / 0.6648
= 3.129
≈3.13
p value
p(Z > 3.13)
= 0.0008770
8.7e-4
d. Z critical value = 2.81
42.08 +- 2.81 * 3.39/√26
= 42.08 +- 2.81*0.6648
= 42.08 - 1.868, 42.08 + 1.868
= 40.212 ,43.948
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Ryan practiced piano for 3/10 of an hour and soccer for 1/2 an hour. In simplest form, how long did he practice altogether?.
Answer:
4/5 of an hour
Step-by-step explanation:
1/2 = 5/10 so 5/10 + 3/10 = 8/10. Simplify by 2 and you get 4/5.
Please answer fast i really need this so i can get good grades.
how do you find the zeros of polynomial r^2-28=-3x? Please show steps as I do not understand how to solve this problem. Thank you ^-^
Answer:
x = -7 and x = 4
Step-by-step explanation:
Note, I am taking the polynomial equation as
\(x^2 - 28 = -3x\)
Otherwise it does not become a polynomial of one variable and cannot be solved
Zeros of a polynomial are the values of x where the polynomial value itself is 0
Standard equation for a polynomial of degree 2 is ax² + bx + c = 0 where a, b and c are constants
Degree is the highest exponent. Here the highest exponent is 2 so the polynomial has degree 2. Such a polynomial is called a quadratic polynomial
So we first have to convert
x² - 28 = - 3x into this form ax² + bx + c
1. Add 3x to both sides
x² - 28 + 3x = -3x + 3x =0
==> x² + 3x - 28 = 0
With a = 1, b = 3 and c = -28
2. Factor x² + 3x - 28 = 0
Here a = 1, b = 3 and c = -28
Factoring means find two expressions x+a and x +b such that (x + a) (x + b) = x² + 3x - 28 = 0
Then we can state that
x + a = 0 ==> x = -a as one solution
x + b = 0 ==> x = -b as the other solution
To factor, find two numbers m and n(could be negative) such that mn = c and m + n = b
28 has factors 7 and 4 so that is a good start
-28 = -7 x 4 or could also be 7 x -4
How do we choose?
Add both and see what gives you +3
-7 + 4 = -3 Nope
7 + -4 = 7-4 = 3 YES
So the factors are 7 and -4
(x + m) = (x + 7)
(x + n) = (x -4)
So the original quadratic polynomial becomes
(x + 7)(x -4) =
This means
x + 7 = 0 ==> x = -7
x - 4 = 0 ==> x = 4
So the solutions(also called roots) of x² + 3x - 28 = 0 are:
x = -7 and x = 4
Both the above values satisfy the quadratic equation
which hypothesis test is most appropriate to determine if there is evidence to support the claim that the proportion of people who smoke is less than 22.5%? correct!
Yes, given explanation is correct.if the calculated test statistic is less than -1.645 then the null hypothesis can be rejected.
For test the claim that the proportion of people who smoke is less than 22.5%.
A one-tailed test of hypothesis can be used. Specifically, a one-sample z-test for a proportion can be used where:
Null hypothesis: p ≥ 0.225 (the proportion of people who smoke is equal to or greater than 22.5%)
Alternative hypothesis: p < 0.225 (the proportion of people who smoke is less than 22.5%)
The test statistic for the one-sample z-test for a proportion is calculated as:
z = (p - P0) / √[(P0 × (1 - P0)) / n]
where p is the sample proportion, P0 = the hypothesized proportion under the null hypothesis and n = The sample size.
If the calculated test statistic falls in the rejection region which is determined by the chosen significance level (e.g., alpha = 0.05) then the null hypothesis can be rejected and it can be concluded that there is evidence to support the claim that the proportion of people who smoke is less than 22.5%.
For a one-tailed test with alpha = 0.05, the critical value is -1.645.
Hence, if the calculated test statistic is less than -1.645 then the null hypothesis can be rejected.
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Does anyone know the answer?
Answer:
33.7°
Step-by-step explanation:
the direction angle is calculated as
tanΘ = \(\frac{y}{x}\) ( Θ is the direction angle ) , then
tanΘ = \(\frac{-4}{-6}\) = \(\frac{2}{3}\)
Θ = \(tan^{-1}\) ( \(\frac{2}{3}\) ) ≈ 33.7° ( to the nearest tenth )
9. A car is being tested for reliability on a
track by driving at a constant speed. The
car has traveled 150 miles in 3 hours.
a. Complete the table below.
b. If the car breaks down 4.5 hours into
the test and has to stop for a repair
before continuing, what ratio(s) of
distance to time would be affected?
c. How would you expect the ratio to
change? Explain your reasoning.
Help anyone???
Answer:
Step-by-step explanation:
See attached image.
Natasha rides her bicycle to school. She rides slowly uphill for 5 minutes when she first leaves her house, then speeds up and rides at a consistent speed on flat road for 15 minutes. The last 7 minutes of her ride, she goes faster and faster, flies downhill until she arrives at school. Which graph shows the relationship between Natasha’s speed on her bicycle and time?
Answer:
B
Step-by-step explanation:
i searched it up
Sketch the line 4x+3y=11
sketch of the line 4x + 3y = 11, slope (-4/3), y-intercept of the line y = 11/3
Step 1: Convert the equation to slope-intercept form (y = mx + b) by solving for y:
3y = -4x + 11
y = (-4/3)x + 11/3
Step 2: Identify the slope and y-intercept:
From the equation in slope-intercept form, we can see that the slope (m) is -4/3 and the y-intercept (b) is 11/3.
Step 3: Plot the y-intercept:
On the y-axis, mark a point at y = 11/3 (approximately 3.67). This is the y-intercept of the line.
Step 4: Use the slope to find additional points:
Using the slope of -4/3, we can find other points on the line. The slope represents the change in y for every 1 unit change in x. So, starting from the y-intercept, we can move down 4 units and to the right 3 units to find the next point, and continue this pattern to find more points.
Step 5: Connect the points:
Once you have a few points on the line, you can connect them with a straight line. Make sure the line extends beyond the plotted points to show that it continues indefinitely.
The resulting line should have a negative slope (-4/3) and be slanting downward from left to right.
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In the equation 80 divided by 10 equals 8, the number 80 is the…. A: dividend. B: quotient. C: divisor. D: remainder.
Answer:
he dividend number is 80, the number used to divide another number is 10 and the result of the dividing two number is 8.
Step-by-step explanation:
PLEASE please need help
Answer:
Question 3: 93 Question 4: -18
Step-by-step explanation:
Use Order of Operations (BEDMAS - Brackets Exponents Division Multiplication Addition and Subtraction).
Question 3:
Start with the numbers inside the brackets.
3^2 (4+6) + 3
= 3^2 (10) + 3
Then, solve the exponents.
= 9 (10) + 3
Multiply 9 and 10.
= 90 + 3
Add the numbers.
= 93
Question 4:
Again, start with the brackets.
3 (4+2) - 6^2
= 3 (6) - 6^2
Then, solve the exponent.
= 3 (6) - 36
Multiply 3 and 6.
= 18 - 36
Subtract the numbers.
= -18 (You can do 36 - 18 which is 18, then add the negative sign)
How many dots are in the 4th step
Answer:
24
Step-by-step explanation:
if we observe carefully we can see that the difference in the number of dots from the first picture to the second picture is 5
and the difference in the number of dots from the second picture to the third picture is 7
so there might be a chance that the difference between the 3rd figure and 4th figure may be 9
so my answer is the number of dots in the 3rd picture + 9
15+9= 24
Please helppppppppppppp
Answer:
cheese borber for the fist cancer is just ego for the second
Step-by-step explanation:
its just science
To pass an online class a student must answer 75% of questions correcrtly on a final exam. If there are 60 quesrtions on the exam, how many questions must a student answer correctly to pass
Answer: If there are 60 questions and the student has to answer 75% of questions then the number of questions the student must answer is 45
Step-by-step explanation:
No of questions= 60,
Answers to be given= 75%
then no of questions to pass the exam= No of questions*Answers to be given in percentage
=60*75/100\
=45