Answer:
A.1/6
Step-by-step explanation:
(HINT: your answer should be written as a rate.)
(Please Help) (ASAP)
POINT:20!!!
Answer:
his average speed is 60 mph
Step-by-step explanation:
please mark brainliest, i need it for a new rank
<3
A student would like to estimate the mean length of words in a book report he just finished writing. He selects a
random sample of 20 words and determines the mean length to be 4 characters. Later, he discovers how to use a
built-in function of his word-processing program that reveals that the mean length of all words in his book report is
4.3 characters. Which of the following describes the number, 4.3?
O sample
O statistic
population
parameter
Answer:
statistic
Step-by-step explanation:
because its calculated
Answer:
parameter
Step-by-step explanation:
i got 100
Write 9/12 as a sum of unit fractions.
Answer:
9/12 = 1/2 + 1/4
Step-by-step explanation:
This can be done in an unlimited number of ways. Which you choose depends on what you are trying to achieve. Each way will get you the same sum. <33
She decides to use the elimination method to find the solution. She multiplies the second equation by 3 and adds it to the first equation to find 14x = 70, showing her that x = 5. Beyonce finds that y = 4.
Step 1: 3(4x + y = 24) → 12x + 3y = 72
Step 2: 2x – 3y = -2
+ 12x + 3y = 72
14x = 70
14x/14= 70/14 → x = 5
Thinking about this process, Beyonce says out loud, “There are lots of ways I could go about solving this problem. I could do the method above or I could multiply the first equation by -2 and add the second.
Step 1: -2(2x – 3y = -2) → -4x + 6y = 4
Step 2: -4x + 6y = 4
+ 4x + y = 24
7y= 28
7y/7= 28/7 → y = 4
“I seem to find that there is only one solution to the two equations, but I wonder if I will get the same solution if I use a different method?”
If Beyonce uses a different method, would she get the same solution? Be sure to show work or explain your reasoning.
Explain how you know that a system of equations has no solution.
Explain how you know that a system of equations has an infinite number of solutions.
Answer:
Well it's the same because it's the same problem just worded different it's like saying "May I?" and your sister says "Can I?" It's the same question just different wording.
Help me guys please :(
What quantity of 61% hydrochloric acid solution must be mixed with a 21% hydrochloric acid solution to produce 277.5 mL of 53% solution?
Answer:
222 mL
Step-by-step explanation:
okay so lets multply them lets call the quantity of hydrocloric acid x
so 61x+ 21(277.5-x)= 53*277.5
61x+ 21*277.5-21x= 53*277.5
40x=(53-21)(277.5)
40x= (32)(277.5)
x= 222 mL
if my answer helps please mark as brainliest.
6TH grade math please help AP EX
Answer:
I think the 1st one would be 10...
Step-by-step explanation:
Because 12-2=10 and 18-8=10.
If I'm wrong, im super sorry
A survey of randomly selected visitors to a mall yielded the following data:
Approved new design for the seating in the food court
Number surveyed
Male
155
254
Female
157
301
Based on this sample, what would be the correct decision and conclusion of a test to determine whether the proportion who approve the design plan for the seating area in the food court is higher for men than it is for women at the 5% level?
a) Reject the null concluding that there is evidence the proportion is higher for men.
b) Reject the null hypothesis concluding that there is no evidence that the proportion is higher for men.
c) Do not reject the null hypothesis concluding that there is evidence that the proportion is higher for men.
d) Reject the null concluding that there is evidence the proportion is higher for women.
e) Do not reject the null hypothesis concluding that there is no evidence that the proportion is higher for men.
Answer:
The answer is A
Step-by-step explanation:
Reject the null concluding that there is evidence the proportion is higher for men.
Using the z-distribution, as we are working with proportions, it is found that the correct option is:
b) Reject the null hypothesis concluding that there is no evidence that the proportion is higher for men.
What are the hypothesis tested?At the null hypothesis, it is tested if the proportions are the same, that is:
[tex]H_0: p_M - p_W = 0[/tex]
At the alternative hypothesis, it is tested if it is higher for men, that is:
[tex]H_1: p_M - p_W > 0[/tex]
What is the distribution of the difference of proportions?For each sample, we have that:
[tex]p_M = \frac{155}{254} = 0.6102, s_M = \sqrt{\frac{0.6102(0.3898)}{254}} = 0.0306[/tex]
[tex]p_W = \frac{157}{301} = 0.5216, s_W = \sqrt{\frac{0.5216(0.4784)}{301}} = 0.0288[/tex]
Then, for the distribution of differences, the mean and the standard error are given by:
[tex]\overline{p} = p_M - p_W = 0.6102 - 0.5216 = 0.0886[/tex]
[tex]s = \sqrt{s_M^2 + s_W^2} = \sqrt{0.0306^2 + 0.0288^2} = 0.042[/tex]
What is the test statistic?It is given by:
[tex]z = \frac{\overline{p} - p}{s}[/tex]
In which p = 0 is the value tested at the null hypothesis, hence:
[tex]z = \frac{\overline{p} - p}{s}[/tex]
[tex]z = \frac{0.0886 - 0}{0.042}[/tex]
[tex]z = 2.11[/tex]
What is the decision?Considering a right-tailed test, as we are testing if the proportion is higher than a value, with a significance level of 0.05, the critical value is of [tex]z^{\ast} = 1.645[/tex].
Since the test statistic is greater than the critical value for the right-tailed test, there is enough evidence to reject the null hypothesis that the there is no evidence that the proportion is higher for men, hence option b is correct.
More can be learned about the z-distribution at https://brainly.com/question/26454209
1. Marisol is making a pattern with blocks. What might the missing shape be? First, look at the blocks. ? Shape: 1 1 . 2 3 Next, describe Marisol's pattern.
Answer:
edwardrocks124531
Beginner
2 answers
4 people helped
Answer:
by butthole be icrhingggg jejdhows your day whether are you there bhdhx
Step-by-step explanation:
jshdhdjejsjdjdjfbfhdjdbfbid gregg tea r hurry dragon all see few free add gree d success butt ginn hwdohee fell woman woah bbjdndjdhdbdjfidheuhebdidbdndf
Step-by-step explanation:
build the graph of the equation (x-2)(y-3)=0
Answer:I don’t know the answer but something that always helps me is soupCalculator it will give you the answer and show you step by step
Step-by-step explanation:
-9 = 1/3m + 6
SHOW WORK.
Step-by-step explanation:
Sorry its messy but if you cant understand tell me
Simplify the following using the Distributive Property: -2(x+10)
Answer:
[tex]\bold{-2x-20}[/tex]
Step-by-step explanation:
Hi there!
Let's clarify what the Distributive Property is.
It's a property that states
[tex]\bold{a(b+c)=ab+ac}[/tex]
So, we take a number a, multiply it by b and c, and add the products.
Now, let's use this property to simplify our expression:
[tex]\bold{-2(x+10)}[/tex]
[tex]\bold{-2x-20}[/tex]
Hope it helps! Enjoy your day!
~Just a teenage girl willing to help
[tex]\bold{Besties4Ever:-):-):-)}[/tex]
Which fraction is equivalent to the whole number 8?
A.1/8
B.2/10
C.12/8
D.16/2
Answer:
D: 16/2
Step-by-step explanation:
you take 16 and divide it by 2 making your answer 8
Someone please explain this it’s confusing me.
Answer:
x = 4 radical 3 / 3
Step-by-step explanation:
this is a 30-60-90 triangle
the side across from the angle 30 is L
the side across from the angle 60 is L√3
the side across from the angle 90 is 2L
we are given the side across from 60⁰ so we know that:
2 = L√3
we want to solve for L, so we must divide both sides by √3 (radical three)
2/√3 = L√3/√3
you would get 2/ √3 = L, because the radical three cancels out on the L side.
but you can't have a radical in the denominator, so you have to multiply 2/√3 by radical 3
2 times √3 and √3 times √3
you get 2√3/√9
radical nine can simplify
2radical3/3 or 2√3/3
we found L, but that would equal the thirty degree angle, not the 90, 90 = 2L
multiply the number infront of the radical by two and get
4√3/3
x=4 radical 3 divided by 3
A truck can drive 200 kilometers on 25 liters of gasoline.
How many liters of gasoline do I need to drive 640 kilometers?
imut How many hours will it
Giving 13 points!! Help help help
Answer:
a. 15
b. 27
c. 4
d. 72
e. 2
Step-by-step explanation:
If you need an explanation lmk! happy to help.
Solve for x. 20 points!
Answer:
x=-12
Step-by-step explanation:
Sharon works as a carpenter and makes $29.67 per hour.
Sharon works 10 hours every day. Calculate the gross pay per
week.
Answer:
2,076.9
Step-by-step explanation:
29.67 x 10 = 296.7
296.7 x 7 = 2,076.9
Rick earned $24 for each car he washed. This month he washed 15 cars. He spent $85 of the money he earned this washing cars and saved the red of the money. How much money did Rick save from the he earned washing cars this month?
Answer:
$275
Step-by-step explanation:
If you multiply 24 by 15 you get the total which is $360. When you subtract the $85 he spent you get $275 left over that he is saving.
5. In the diagram above, what is the volume of the rectangular prism?
A. 120 cm
B. 162 cm
C. 324 cm
D 360 cm
Answer:
The answer is D.
Step:
6*5*12=360
56 + -90 * 2 - -17 =
Answer: -1654
Step-by-step explanation:
What is the equation for this line, in Slope Intercept Form (6,1) and (2,-1)
Answer:
y=1/2x-2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-1-1)/(2-6)
m=-2/-4
m=1/2
y-y1=m(x-x1)
y-1=1/2(x-6)
y=1/2x-6/2+1
y=1/2x-3+1
y=1/2x-2
HELP ME please this is due tomorrow
Answer:(12 cm) x (7 cm) x (6 cm) x 8.4 =
4.2336 liters
5th grade math. correct answer will be marked brainliest.
Answer:
The answer will be 41/14
Step-by-step explanation:
2.928571429
Logx(x-3)=1 solve for x
Please help me answering this :)
If fake answer, then will be reported.
Answer:
25.
Step-by-step explanation:
If the distance from Dunlap and Butte is 20 MI then the distance between Ferris and Butte would be 25 because it wouldn’t reach from 20 all the way so it Hass to add more and 25 would be the only one .
What is the area of the base of the figure
48
45
30
24
i believe the area is 48 if it's not correct sorry
24. On the coordinate plane to the right, graph
the inequality 2x +y >1.
Help fast pls
HELP ASAP! I’m very confused and need help!
Answer:
I think it's 1 and 7 and 2 and 8.
Step-by-step explanation:
^^
PLEASE HELP HELP HELP IMAGE ATTAcHED
Answer:
is 3
Step-by-step explanation:
because look at the down the trigal and you will see that they pointing at the tree
Answer:
3
Step-by-step explanation:
P(1, 3) ⇒ P'(3, 9)
R(1, 1) ⇒ R'(3, 3)
Q(3, 1) ⇒ Q'(9, 3)
Looking at the points, it appears that the x and y coordinates are being multiplied by 3. Therefore, the scale factor is 3.