Answers
Answer: 123.5
Step-by-step explanation:
x=123.5
you divide similar sides (39/6) to get 6.5
then multiply 19 by 6.5 to get 123.5
Related Questions
The Institute of Education Sciences measures the high school dropout rate as the percentage of 16- through 24-year-olds who are not enrolled in school and have not earned a high school credential. Last year, the high school dropout rate was 8.1%. A polling company recently took a survey of 1,000 people between the ages of 16 and 24 and found that 6.5% of them are high school dropouts. The polling company would like to determine whether the dropout rate has decreased. At a 5% significance level, the decision is to ________.
Answers
Answer:
Step-by-step explanation:
Given that:
The population proportion = 8.1% = 0.081
Sample size = 1000
The sample proportion [tex]\hat p[/tex] = 6.5% = 0.065
The null and the alternative hypothesis for these studies can be computed as:
[tex]\mathbf{H_o : p = 0.081} \\ \\ \mathbf{H_1 : p \neq 0.081}[/tex]
Since [tex]H_1[/tex] is not equal to the population proportion; then this is a two-tailed test.
The level of significance is given as 5% = 0.05
The standard error [tex]\sigma_p[/tex] of the sample proportion [tex]\hat p[/tex] can be computed as:
[tex]\sigma_p = \sqrt{\dfrac{p(1-p)}{n} }[/tex]
[tex]\sigma_p = \sqrt{\dfrac{0.081(1-0.081)}{1000} }[/tex]
[tex]\sigma_p = \sqrt{\dfrac{0.081(0.919)}{1000} }[/tex]
[tex]\sigma_p = 0.0086[/tex]
The z score test statistic is calculated as:
[tex]z =\dfrac{\hat p - p}{\sigma_p}[/tex]
[tex]z =\dfrac{0.065- 0.081}{0.0086}[/tex]
z = −1.860
For a two-tailed test, the p-value = [tex]2 \times P(Z < -|z|)[/tex]
[tex]p-value = 2 \times P(Z < - 1.86)[/tex]
p-value = 2 × 0.0314
p-value = 0.0628
Rejection Criteria: To reject [tex]H_o[/tex] ; if the p-value is less than the level of significance ∝
The decision rule: We failed to reject the null hypothesis since the p-value is greater than the level of significance ∝.
Thus, there is insufficient evidence to conclude that p is not equal to 0.081
1. Which is larger 7.2 x 10 -4 or 0072? 7.2 x 10^4
Answers
Answer:
7.2 is larger than 72×10-4 and this is also larger than 00.72
Evaluate 4c - 5 for c = -3
Answers
Answer:
-17
Step-by-step explanation:
Substituting c=-3
4*-3-5
=-12-5
=-17
Answer:
-17
Step-by-step explanation:
4c - 5
4(-3) -5
-12 -5
-17
An organization wants to know if drinking caffeinated coffee causes hyperactivity in college students. To test their research question, they offered students free coffee to students throughout the term in exchange for participating in the study. Researchers intentionally balanced participating students into groups by the student’s year, major, and gender. One group received regular coffee and the other received decaffeinated coffee. Students obtained their free coffee at will from the research stations and through the day used an app to track how hyperactive they felt.a) What are the independent variables?b) What is the dependent variable?c) What kind of study design is this?d) What kind of sampling method is being used?
Answers
Answer:
a) drinking caffeinated coffee
b) hyperactivity
c) experimental study
d) Non-Probability Sampling Method
Explanation:
a) An independent variable refers to the object(s) or variable that is been measured which is not affected or changed by other variables. Rather, the independent variable affects or changes other variables. That is why drinking caffeinated coffee falls under the independent variable.
b) The dependent variable on other hand is a variable that can be affected or changed by the independent variable. That is why hyperactivity falls under the dependent variable.
c) Noteworthy is the fact that in an experimental study a researcher usually alters the level of the independent variable [the caffeinated coffee]. This is evident in this case because we are told, "One group received regular coffee and the other received decaffeinated coffee."
d) The kind of sampling method used is the Non-Probability Sampling Method because they [the students] which formed the population were not randomly selected, but "intentionally balanced" into groups by the student’s year, major, and gender.
Diet cola was on sale last week; it cost $10 for every 4 packs of diet cola.
a. How much do 2 packs of diet cola cost?
b. How much does 1 pack of diet cola cost?
Answers
Answer:
A would most likeley be the answer because when you divide 10 from 4 you get 2.50
Step-by-step explanation:
hope i could help.
need help on this I just don't understand it
Answers
Answer:
I understand what to do but i don't understand what a 2 way table is
Step-by-step explanation:
16x-5=5+11x I really dont get these
Answers
Answer:
x = 2
Step-by-step:
16x - 5 = 5 + 11x
16x - 11x = 5 + 5
5x = 10
/5 /5
x = 2
Good Luck
Answer: x=2
If I Helped, Please Mark Me As Brainliest, Have A Great Day :D
PLEASE HELP!! WILL GIVE BRAINLIEST + 25 POINTSS
What is the value of r?
1.9r+0.1r=0.6
Enter your answer as a decimal in the box.
Answers
Answer:
0.3
Step-by-step explanation:
1.9r + 0.1r = 0.6
Add like terms on the left side.
2r = 0.6
Divide both sides by 2.
r = 0.3
Answer:
3.333 continued
Step-by-step explanation:
Add 1.9r and .1r because they are like terms and you get 2r
Divide 2/.6
r = 3.3333
x-(3-2x)-(4-5x)=-7. what is the value of x?
Answers
Answer:
x=0
Step-by-step explanation:
expand x-(3-2x)-(4-5x)=-7
x-3+2x-4+5x=-7
8x-7=-7
8x-7+7=0
8x=0
x=0
the length of a rectangle is 24 feet more than the width. The perimeter of the rectangle is 88 feet. What is the length and width of this rectangle?
Answers
Answer:
W = 10 ft
Step-by-step explanation:
Represent the length by L and the width by W. Then L = W + 24.
The perimeter is P = 2W + 2L, or 88 ft. Thus, after substituting L = W + 24,
88 ft = 2W + 2(W + 24), or
88 = 2W + 2W + 48, or, after reduction,
44 = 2W + 24, or
2W = 20, and so W = 10 ft
The length of the rectangle is 34 feet.
The given parameters;
perimeter of the rectangle, P = 88 feet.let the width of the rectangle = wthen, the length of the rectangle, L = 24 + wThe length of the rectangle is calculated as follows;
P = 2(L+ w)
P = 2(24 + w + w)
P = 2(24 + 2w)
88 = 48 + 4w
subtract 48 from both sides of the equation;
88 - 48 = 4w
40 = 4w
w = 10
Now, solve for the length;
L = 24 + w
L = 24 + 10
L = 34 feet
Thus, the length of the rectangle is 34 feet.
Learn more here:https://brainly.com/question/18869010
The graph shows the amount of money paid when purchasing bags of candy at the zoo:
A graph is shown. The x-axis is labeled from 0 to 9 and the y-axis is labeled from 0 to 10. The four points shown on the graph are ordered pairs 0, 0 and 1, 2 and 2, 4 and 3, 6. These points are joined by a line. The label on the x-axis is Bags of candy. The title on the y-axis is Total cost in dollars.
What is the constant of proportionality? (4 points)
Answers
Answer:
CStep-by-step explanation:
Answer:
3
Step-by-step explanation:
At most, Kyle spent $50 in the recording studio recording his new single. Kyle has already
made $12 from purchases made online. If each track costs $1, how many more tracks does
he need to sell to make a profit?
Answers
Answer:
Well you can subtract 12 from 50 make sure the larger number Is in front an the smaller number then you would get 38 so he would have to make more than 38 tracks to make a a profit
with what number we should multiples -9/28,so that the product be -24/49
Answers
Serena leans a 24-foot ladder against a 22.8-foot-tall building to climb on the roof.
Answers
Answer:
Sine of the Angle = opposite / hypotenuse
Sine Angle = 22.8 / 24
Sine Angle = .95
Angle = arc sine (.95)
Angle = 71.805 degrees
Angle = 71.8 (rounded)
Step-by-step explanation:
Answer:
71.8
Step-by-step explanation:
Write an algebraic expression for the following:
Divide 2w by 3xy
Answers
Answer:
Step-by-step explanation:
2w/3xy
this is the answer
I NEED HELP WITH OPPERATIONS WITH COMPLEX NUMBERS
(PLEASE HELP)
Answers
Answer:
see below
Step-by-step explanation:
z1 = sqrt(3) -i
z2 = -i
z1+z2 = sqrt(3) -i + -i = sqrt(3) -2i
z1-z2 = sqrt(3) -i - -i = sqrt(3) +-i +i = sqrt(3)
z1*z2 = sqrt(3) -i * -i = sqrt(3)*-i -i*-i = -sqrt(3)i + i^2 = -sqrt(3)i -1
z1/z2 = sqrt(3) -i / -i = sqrt(3)/-i - i/-i = sqrt(3) *i/-i*i +1 = sqrt(3)i/-i^2 +1
= sqrt(3) i +1
Find the mistake in the problem. tell what is is.
6th grade math
Answers
Daisy's Flower Shop sold 135,643 flowers during its first year. The second year, the shop sold 9,756 more flowers than it did its first year. The third year, it sold 1,345 more flowers than it did in the second year.
How many flowers did the shop sell during the three years?
Daisy's Flower Shop sold flowers during the three years.
Answers
Answer:
427,786 Flowers
Step-by-step explanation:
135, 643 + 9,756 = 145,399
145, 399 + 1,345 = 146,744
135,643 + 145,399 = 281,042 + 146,744 = 427,786
The following data represent the number of grams of fat in breakfast meals offered at a local fast food restaurant. (a) Construct an ordered stem-and-leaf plot and (b) describe the shape of the distribution.
(a) Construct the ordered stem-and-leaf plot below.
0 A vertical line used to separate stems and leaves.
01234
(b) The distribution is _______
skewed right.
bell-shaped.
uniform.
skewed left.
Enter your answer in each of the answer boxes.
Answers
Answer:
The following are the answer to this question:
Step-by-step explanation:
In the question some data is missing, which is defined in the attached file please find it.
The table for point a:
plot for the Stem-and-leaf:
0 3 4 5 7 4
1 2 2 4 4 5 7 7 7
2 0 3 4 4 5 8 6
3 3 4 7 9 4
4 1
In point b:
Its distributed skewed is correct because in its points 1 is a tail on its right side.
please find the attached file.
Drag each angle measure to the correct location. Each angle measure can be used more than once.
In the figure, two parallel lines are cut by a transversal. Two of the angles are labeled. Find the measures of the other angles and label them.
Answers
Answer:
[tex]4 > {47 + 1 = fs \cos( \cos(34 + \sqrt[33]{?} ) ) \times \frac{?}{?} }^{?} [/tex]
ok I hope it's good answer
Answer: there u go i hope it helps
Step-by-step explanation:
In a New York coupon experiment, the experiment was conducted to test the effects of the face value of coupons on the likelihood of coupon redemption. Subjects were randomly assigned to 2 treatment groups. One group was offered 15-cent coupons and the other 50-cent coupons for four products. During the interviews, the respondents answered questions about which brands they used and how likely they were to cash coupons of the given face value the next time they shopped. In the preceding experiment, the dependent variable that was ________.
Answers
Answer:
The correct approach will be "the likelihood of cashing the coupon".
Step-by-step explanation:
That what's being examined as well as calculated throughout the experiment or observational study seems to be the dependent variable (almost always widely recognized as that of the responding variable). As a consequence of the modifications to something like the independent variable, that's what modifications. Whether large you are really at various ages would be an illustration of some kind of dependent variable.Given this linear system:
2x - 2y + 6z = 76
4x - y + 10z = 127
-x + 2y - 4z = -50
Which of the following is the augmented matrix for this system?
Answers
Answer:a
Step-by-step explanation:
Answer:
A
next one:
D and D
just did the warm-up
PLEASE ANSWER THIS ASAP
Answers
Answer:9a-2
Step-by-step explanation: see photo
4x+1y=12 solve please need help
Answers
Answer:
-0.25y
Step-by-step explanation:
Simplifying
4x + 1y = 12
Solving
4x + 1y = 12
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1y' to each side of the equation.
4x + 1y + -1y = 12 + -1y
Combine like terms: 1y + -1y = 0
4x + 0 = 12 + -1y
4x = 12 + -1y
Divide each side by '4'.
x = 3 + -0.25y
Simplifying
x = 3 + -0.25y
Answer:
x = 3 + -0.25y
Step-by-step explanation: Simplifying:4x + 1y = 12Solving:4x + 1y = 12Solving for variable 'x'.:Move all terms containing x to the left, all other terms to the right.Add '-1y' to each side of the equation.4x + 1y + -1y = 12 + -1yCombine like terms: 1y + -1y = 04x + 0 = 12 + -1y4x = 12 + -1yDivide each side by '4'.x = 3 + -0.25ySimplifyingx = 3 + -0.25y7. Write three different fractions equivalent to 3/4. Explain how you know they are
equivalent.
Your answer
Answers
Divide. Write your answer in simplest form.
-8/9 ÷ (-8/9)
Answers
Answer: 1
Step-by-step explanation:
Keep Flip Change
-8/9 x -9/8
Cross simplify and you’ll get 1 since when you simplified its -1/1 x -1/1 and since it’s negative times negative then itll be positive so final answer=1
Answer:
1
Step-by-step explanation:
Jack mails 10 packages that each weigh the same amount. If the combined weigh of all 10 package is 67 1/2 pounds, how much does one package weigh? Show your work.
Answers
How do you do this question?
Answers
Step-by-step explanation:
S = ∫ 2π y ds
ds = √(1 + (dx/dy)²) dy
ds = √(1 + (8y)²) dy
ds = √(1 + 64y²) dy
S = ∫₁² 2π y √(1 + 64y²) dy
S = π/64 ∫₁² 128y √(1 + 64y²) dy
S = π/64 [⅔ (1 + 64y²)^(³/₂)] |₁²
S = π/96 (1 + 64y²)^(³/₂) |₁²
S = π/96 (1 + 256)^(³/₂) − π/96 (1 + 64)^(³/₂)
S = π/96 (257√257) − π/96 (65√65)
S = π/96 (257√257 − 65√65)
How many ounces of trail mix are in a bag that weighs 0.681 kilograms? Input only numeric values. (1 pound = 0.454 kg and 1 pound = 16 ounces)
Answers
Answer:
24 ounces
Step-by-step explanation:
the math is.
.681÷ .454= 1.5 which is in pounds than you take 16÷2= 8 take that 8 add it to the 16 giving you 24 ounces
Answer:
24
Step-by-step explanation:
Every 2/3 hour, Harris can sew 1/6 pair of jeans. What is Harris's rate in pairs of jeans per hour?
A 1/9
B 1/4
C 9
D 4
Answers
Answer:
0.25 or 1/4 is the answer
Step-by-step explanation:
(1/6)/(2/3) = 1/6 * 3/2 = 3/12 = 1/4
