LALLY MANLLITYONLILULIVE
1)
Which expression is equivalent to (5x + 3) + (4x + 7)?
A)
9x + 21
B)
9x + 10
C)
10x + 9
D)
20x + 21
what is -15/16÷7/12= k
Solve for k
by simplifying both sides of the equation, then isolating the variable.
Exact Form:
k= −45/28
Decimal Form:
k=−1.60714285…
Mixed Number Form:
k= −1 17/28
so its the top one :)
1. For each of the following sampling situations, identify the population as exactly as possible. That is, say what kind of individuals the population consists of and say exactly which individuals fall in the population. If the information given is not complete, complete the description of the population in a reasonable way. A college has changed its core curriculum and wants to obtain detailed feedback information from the students during each of the first 12 weeks of the coming semester. Each week, a random sample of 5 students will be selected to be interviewed.
a. The population is all current students.
b. The population is students in the college during the first 12 weeks of the coming semester.
c. The population is the 60 students selected during the first 12 weeks of the coming semester.
d. The population is students in the coming semester.
2. The American Community Survey (ACS) replaced the census long form starting with the 2010 census. The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status.
a. The population is 250,000 households.
b. The population is all U.S. households.
c. The population is all households that are being contacted by the ACS.
d. The population is U.S. households at 2010.
3. An opinion poll contacts 1161 adults and asks them, Which political party do you think has better ideas for leading the country in the twenty-first century?
a. The population is 1161 U.S. adults that supply information.
b. The population is all adult residents of the U.S.
c. The population is political parties.
d. None of the above.
Answer:
First question: Answer is C
Second question: Answer is C
Third question: Answer is A
Step-by-step explanation:
For the first question, the option is C since there were 5 interviewees per week, which gives a total of 5x12 = 60, that is, an exact sample population of 60.
For the second question, the exact population is of all the 250,000 households that are being contacted by the ACS.
For the third question, the population is 1161 American adults who if they provide information about the political party that they believe has better ideas to lead the country in the 21st century,
What is 1/5 divided by 4?
Answer:
0.8
Step-by-step explanation:
Answer:
I believe that answer is 0.05
Step-by-step explanation:
10. There are 10 girls for every 12 boys. What is the ratio of
boys to girls?
Oa) 12:10
Ob) 10:12
Oc)24:10
Od) 12:24
Answer:
12:10
Step-by-step explanation:
Answer:
well its not C or D
And i dont think it is A
So imma say B
Step-by-step explanation:
A soccer team made $575.75 from selling popcorn at a concession stand during a tournament. The popcorn cost the
team $65.00. What is the amount of money earned for each player if the profit is divided equally among the 15 players?
Round to the nearest cent.
$34.05
$42.72
$7,661.25
$9,611.25
Answer:
34.05
Step-by-step explanation:
Subtract 65 from 575.75 and then divide that number by 15
Graph the system of linear equations.
- 3y = x+5 and y = 2x+2.
u
X
y
The solution to the system is
4
-8
14
-4
-8
Draw
Click or tap the graph to plot a point.
Step-by-step explanation:
Given system of equations are :
-3y = x+5 ....(1)
y = 2x+2 ...(2)
We need to find the solution of the equations.
Multiply equation (2) by 2.
-6y = 2x+10 ...(3)
Subtract equation (2) and (3).
y-(-6y)= 2x+2-(2x+10)
7y=2x+2-2x-10
7y=-8
y = 8/7
Put the value of y in equation (2)
[tex]\dfrac{8}{7}=2x+2\\\\\dfrac{8}{7}-2=2x\\\\x=\dfrac{\dfrac{-6}{7}}{2}\\\\x=\dfrac{-3}{7}[/tex]
Hence, this is the required solution.
Each algorithm is applied to a group of 52 sample problems. The new algorithm completes the sample problems with a mean time of 24.04 hours. The current algorithm completes the sample problems with a mean time of 24.52 hours. The standard deviation is found to be 5.769 hours for the new algorithm, and 5.556 hours for the current algorithm. Conduct a hypothesis test at the 0.05 level of significance of the claim that the new algorithm has a lower mean completion time than the current algorithm.
Answer:
Therefore we fail to reject the Null hypothesis [tex]H_0[/tex]
Because the is no sufficient evidence to support the claim of the alternative hypothesis [tex]H_a[/tex]
Step-by-step explanation:
From the question we are told that
Sample size [tex]n_1 =52[/tex]
Mean time 1 [tex]\=x_1=24.04\ hours[/tex]
Mean time 2 [tex]\=x_2=24.52\ hours[/tex]
Standard deviation [tex]\partial _1=5.769[/tex]
Standard deviation [tex]\partial _2=5.556[/tex]
Level of significance 0.05
The null hypothesis is [tex]H_o: \mu_1=\mu_2[/tex]
Alternative hypothesis [tex]H_a: \mu_1<\mu_2[/tex]
Generally the test statistics is mathematically represented as
[tex]Z= \frac{\=x_1-\=x_2}{\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}}[/tex]
[tex]Z= \frac{24.04-24.52}{\sqrt{\frac{5.769^2}{52}+\frac{5.5562^2}{52}}}[/tex]
[tex]Z= -0.4321583379[/tex]
[tex]Z= -0.43[/tex]
From Table the Z-critical value at [tex]\alpha =0.05\ is\ -1.6449[/tex]
Therefore
Zcal> Zcritical
(-0.43)=(-1.645)
Generally we fail to reject the null hypothesis [tex]H_0[/tex] at [tex]\alpha = 0.05[/tex]
Therefore we fail to reject the[tex]H_0[/tex]
Because the is no sufficient evidence to support the claim of [tex]H_a[/tex]
Please help me put these in the correct order. *No wrong answers* List the following in order Can you list the answers in order What is a list of number in a specific order called List the following evens in order
Answer:
Add or subtract. Show all work.
1) 9.069
2) 43.95
3) 20.64
4) 32.145
5) 7.16
6) 12.2
7) 25.95
8) 15.815
Increasing order (smallest to largest): 5, 1, 6, 8, 3, 7, 4, 2
Decreasing order (largest to smallest): 2, 4, 7, 3, 8, 6, 1, 5
Multiply or divide. Show all work.
1) 44.95
2) 225.9
3) 20.271
4) 11.557
5) 6.78
6) 41.3
7) 120
8) 515
Increasing order (smallest to largest): 5, 4, 3, 6, 1, 7, 2, 8
Decreasing order (largest to smallest): 8, 2, 7, 1, 6, 3, 4, 5
Please mark me Brainliest :)
How do I figure out -3√12-2√27-2√45
Answer:
−12√3−6√5 or Decimal: -34.201018
Step-by-step explanation:
-3√12-2√27-2√45
3√12=6√3
2√27=6√3
2√45=6√5
=6√3-6√3-6√5
=−12√3−6√5
f(x)=-x^2-10 Find f(-4)
Answer:
We conclude that:
f(-4) = -26Step-by-step explanation:
Given
We have the function
f(x) = -x² - 10
To determine
f(-4) = ?
Calclulating f(-4)
substitute x = -4 in the function
f(x) = -x² - 10
f(-4) = -(4)² - 10
f(-4) = -16 - 10
f(-4) = -26
Therefore, we conclude that:
f(-4) = -26A recipe for waffles calls for 2 cups of flour and 3 teaspoons of baking powder.
Jason uses 4 cups of flour.
How much baking powder should he use?
5 teaspoons
6 teaspoons
8 teaspoons
12 teaspoons
Answer:
The answer would be 6 teaspoons
Answer:
6 teaspoons my guy.
Took da test
Step-by-step explanation:
How far a car goes in 30 seconds at speed of 29m/s
Answer:
i think it goes 870m/s
Step-by-step explanation:
30x29=870
Naomi wants to buy a new computer for $840. She is considering two payment plans that require weekly payments.
Part A:
Write a linear equation that models each payment plan. Write your answers in slope intercept form. Explain why you decided which one is your slope and which one is your y-intercept.
Plan A: $180 down $60/wk payments
Plan B: $0 down $70/wk payments
Answer:
Linear equations take the form: y = mx + c
y is the dependent variable i.e the money that Naomi has to pay in total.
x is the independent variable which in this case is weeks.
m is the slope and this shows the change as a result of x. It should therefore represent the weekly payment as this is increases per week.
c is a the y-intercept which means its a fixed figure that doesn't change. It will therefore be the down payment because that does not change.
Plan A:
Naomi wants to pay $840. Using the formula format and explanation above (replace x with w so it makes more sense), the formula will be:
840 = 60w + 180
Plan B:
This has no down payment so there will be no y-intercept.
840 = 70w
Help Plzzzzzzzzzzzzzzzzzz
Answer
Help with what?
Step-by-step explanation:
Answer:
Whats the question
Step-by-step explanation:
?
250 people were asked to name their favorite fruit. Of those surveyed, how many people prefer peaches? 44% berries, 32% Peaches, 24% Cherries
Answer:
80 people prefered peaches
Step-by-step explanation:
250-68%=80 people
Can someone give methe correct answer with work please, need help. I will give brainlist!!!!
Answer:
Option B is the correct answer
Step-by-step explanation:
Option B is the correct answer
[tex] \Sigma_{k=0}^\infty\frac{3}{k(k+2)}[/tex]
State if the two triangles are congruent. If they are, state how you know.
Answer:
1) Not Congruent
2) Congruent
3) Congruent
4) Congruent
5) Not Congruent
6) Congruent
(I tried my best, hope this helps. Good luck hun)
Step-by-step explanation:
When two triangles are congruent they will have exactly the same three sides and exactly the same three angles. The equal sides and angles may not be in the same position (if there is a turn or a flip), but they are there.
If two angles and the included side of one triangle are equal to the corresponding angles and side of another triangle, the triangles are congruent.
Use synthetic substitution to find f (2) for f (x) = x3 – 5x +2.
Answer:
(2)3=6
_5(2)=_10
6+2=8
_10+8=_2
Please help me with this question bellow.
Answer:
they are just multiplying thr numbers on top for exsample 42÷6=7
Step-by-step explanation:
you should see what numbers dose the bottom numbers have in common and multiply by 15.
What is the area of the figure?
128 in2
118 in2
108 in2
48 in2
Answer:
108 in2
Step-by-step explanation:
An Environmental Club collected 100 pounds of aluminum cans to recycle. 1 point
They plan to collect 25 pounds each week. How much aluminum will the
collect in one year? *
Answer:
well, there are 52 weeks in a year, so if you just multiply the pounds of cans by the amount of years, you get 1,300
Step-by-step explanation:
*sigh*
Identify the property demonstrated.
4(3+5) = 4.3 +4.5
-associative property of
multiplication
-commutative property of multiplication
-distributive property
-identity property of multiplication
Answer:
Distributive property
Step-by-step explanation:
i need help on this:The perimeter of the square below is 36 yards. What is the length of each side?
Which relation is a function?
Answer:
A function is a relation in which each input has only one output. In the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.
Step-by-step explanation:
Factor 5x2 – 17x – 12
Answer:
214.......................
At school, the maximum number of students that can be in a classroom is 29. If there are 19
students signed up for the art class, how many more students can join the class?
What are the solutions? Select the correct choice below and fill in the answer box to complete your
choice.
Answer:A
Step-by-step explanation:A
PPLSS HELLP!! y=___x+___
Answer:
y= 1x-5
Step-by-step explanation:
This grpah shows a linear equation, for which the formula is y=mx+b. M is the slope, and b is the y-intercept, which means the point on the y-axis when x is zero.
So far= y=_x-5
Now to find the slope, you can take 2 points and use the slope formula, which is [tex]\frac{y_{2}-y_{1} }{x_{2} -x_{1} }[/tex]
I used the points (1,-4) and (0, -5)
(1,-4)
[tex]x_{2} , y_{2}[/tex]
(0,-5)
[tex]x_{1} ,y_{1}[/tex]
Plug into formula
[tex]\frac{-4-(-5)}{1-0}[/tex]
negative minus negative becomes a positive
[tex]\frac{-4+5}{1}[/tex]
[tex]\frac{1}{1}[/tex]
The slope is 1, so the equation of the graph is
y= 1x-5
A box contains 84 chocolates which 63 are dark chocolates. The rest are milk chocolates.what is the ratio of milk chocolates to the number of chocolates in the box
Answer:
21:84
Step-by-step explanation:
Answer:
Step-by-step explanation:
We have a box with 84 chocolates
63 are dark, milk=84-63=21
21/63=1/3 is the ratio
for each 1 milk chocolate we have 3 dark chocolates
how do you simplify this using the laws of exponents?
Answer:
x1 = x 61 = 6
x0 = 1 70 = 1
x-1 = 1/x 4-1 = 1/4
xmxn = xm+n x2x3 = x2+3 = x5
xm/xn = xm-n x6/x2 = x6-2 = x4
(xm)n = xmn (x2)3 = x2×3 = x6
(xy)n = xnyn (xy)3 = x3y3
(x/y)n = xn/yn (x/y)2 = x2 / y2
x-n = 1/xn x-3 = 1/x3
Step-by-step explanation:
i hope this helps if its wrong just delete my answer
