Answer:
59
Step-by-step explanation:
Answer:
59 lol. Ty for the free points. Btw hello
Step-by-step explanation:
Select all the expressions that are equivalent to 4b+4+4b+2-+b
Answer: 9b+6
Step-by-step explanation:
2) In a random survey of 500 women, 315 said they would rather be poor and thin than rich and fat; in a random survey of 400 men, 220 said they would rather be poor and thin than rich and fat. Is there sufficient evidence to show that the proportion of women who would rather be poor and thin than rich and fat is greater than the proportion of men who would rather be poor and thin than rich and fat
Answer:
Since the calculated value of Z= 0.242887 is less than Z (0.05) = 1.645 and falls in the critical region we reject the null hypothesis and conclude that there is not sufficient evidence to show that the proportion of women who would rather be poor and thin than rich and fat is greater than the proportion of men who would rather be poor and thin than rich and fat.
Step-by-step explanation:
Here
p1= proportion of women who would rather be poor and thin than rich and fat
p1= 315/500= 0.63
p2= proportion of men who would rather be poor and thin than rich and fat
p2= 220/400= 0.55
1) Formulate the hypothesis as
H0: p1>p2 against the claim Ha: p1 ≤ p2
2) Choose the significance level ∝0.05
3) The test Statistic under H0 , is
Z= p1^ - p2^ / sqrt( pc^qc^( 1/n1 + 1/n2))
pc^= an estimate of the common proportion
pc ^ = n1p1^ + n2p2^/ n1+n2
4) The critical region is Z≤ Z (0.05) = 1.645
5) Calculations
pc^ = 315+ 220/ 500+400= 535/900
pc^= 0.5944
and qc^= 1-0.5944= 0.4055
Thus
Z = 0.63-0.55/ sqrt ( 0.5944*0.4055( 1/500+ 1/400))
Z= 0.08/ sqrt (0.24108 (900/2000))
Z= 0.08/√0.10849
Z= 0.242887
Conclusion :
Since the calculated value of Z= 0.242887 is less than Z (0.05) = 1.645 and falls in the critical region we reject the null hypothesis and conclude that there is not sufficient evidence to show that the proportion of women who would rather be poor and thin than rich and fat is greater than the proportion of men who would rather be poor and thin than rich and fat.
Which pairs show equivalent expression
Hey blink!!!!!!! second one is your answer
There are 4 games at the carnival Kevin played all the games in 24 minutes. How many minutes did he spend at each game if he spent an equal amount of time at each?
Answer:
6 minutes at each game
Step-by-step explanation:
24 minutes divided by 4 games, if he spends and equal amount of time at each game it would be 24/4=6
Answer:
6
Step-by-step explanation:
24/4=6
Complete the proof.
Prove: AUWX - AUW
A)
AAS
B)
ASA
C)HL
D)
SAS
Answer:D) SAS
Step-by-step explanation:
USA test prep
please help im so tired its not even funny how tired i am pleaase help lol
What is the common factor in 5w + 10w?
10w
15w
w
10
Answer:
15w
Step-by-step explanation:
5+10=15 ..........,................ I think.
Brainliest to best answer :D
The difference of two numbers is 63. The sum of two numbers is 111. What are the two numbers?
Answer:
Step-by-step explanation:
Let b>a
b-a=63
b=63+a
a+b=111, substituting 63+a from above in this equation gives you
a+63+a=111
2a+63=111
2a=48
a=24, since b=63+a
b=63+24
b=87 so the two numbers are
24 and 87
beam of light and a mirror study the behavior of light
I WILL MARK BRAINLIST, HELP PLEASE
Answer:
D
Step-by-step explanation:
hope it helped you in any way
is of 12 equal to 9?
no
Answer:
12=9
Obviously
.................
Which of the following transformations shows that figure C is congruent to figure C'?A.reflection in the x-axis
B.rotation 90 counterclockwise about the origin
C.rotation 180 counterclockwise about the origin
D.rotation 270 counterclockwise about the origin
Answer: D.rotation 270 counterclockwise about the origin
Step-by-step explanation:
Previous studies reported that teenagers spent 8.5 hours per week, on average, on the phone. This mean is supposed to have increased, to test this hypothesis, a random sample of 500 teenagers were interviewed about how many hours per week they spent on their phones. The sample mean was 10.5 hours with a sample standard deviation of 2.35. Conduct a hypothesis test. The null and alternative hypotheses are:
Answer:
Since the calculated value of Z= 19.029 is much greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week has increased.
Step-by-step explanation:
1) Formulate the null and alternate hypothesis as
H0 : μ≤ 8.5 against the claim Ha: μ > 8.5
2) Choose the significance level ∝ =0.05
3) The test statistic under H0 is
Z= x`- μ/ s/√n
4) The rejection region is Z≥ Z(0.05)= 1.645
5) Computing the value of Z from sample information we get
Z= 10.5-8.5/ 2.35/ √500
Z= 2/ 2.35/ 22.361
Z= 19.029
Since the calculated value of Z= 19.029 is much greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week has increased.
PLEASE SOMEONE HELP ME WITH THIS PROBLEM
Answer:
1.28
2. -3.5
3.-10.5
Step-by-step explanation:
1.-0.0035 · 12000+70= 28
2. -0.0035 ·21000+70=-3.5
3. -0.0035 ·23000+70=-10.5
I hope this helps
Simplify
-3(2.5-k)+0.5(7+8k)
Answer:
-7•5+3k+3•5+4k
-7•5+3•5+4k+3k
-4+7k
The enrolment of our school is 800. If 35 % are girls
a. What fraction are girls?
b. What fraction are boys?
Answer:
a 7/20. B 13/20
Step-by-step explanation:
800 X 35% = 280
280/800=7/20
Answer:
a. 280/800 (or 7/20 simplified)
b. 520/800 (or 13/20 simplified)
Step-by-step explanation:
a. 800 × 0.35 = 280
Fraction of girls = total girls/total enrollment = 280/800 (or 7/20 simplified)
b. Total boys = Total enrollment - total girls = 800 - 280 = 520
Fraction of boys = total boys/total enrollment = 520/800 (or 13/20 simplified)
I dunno this answer... pwease help... if you're smart
Answer:
H: (2, 14)
O: (4,15)
U: (6,14)
S: (2,10)
E: (6,10)
Step-by-step explanation:
the image on the grid is after doin x- 1 and y-7
to get the preimage do the inverse , x + 1 , y + 7
note- a coordinate is written as (x,y)
so, add 1 to all the x's and 7 to all the y's on the coordinates on the grid!
and sorry for asking but, if this is right could i please get a thanks & brainliest recently a moderator deleted ALL my answers (over 400 answers) causing me to lose over 3k points so id appreciate it alot thanks xoxo
Kris has saved $3500 to open a cupcake shop. She has to pay a security deposit of $800 and $500 each month for rent. How many months will her savings last?
Answer:
His savings will last 2 months
Step-by-step explanation:
Kris has $3500
he has to pay $1300 a month=
2 months
what is the answer?
plz help
Answer:-516
Step-by-step explanation:
Answers:
The simplified expression is -4x The value is -516===========================================
Explanation:
To simplify this, we combine the coefficients. This works because all of the terms have 'x' in them and nothing else (they are all like terms). We can think of this problem as trying to evaluate -12+14-6. This simplifies to -4
So -12x+14x-6x simplifies to -4x
Afterward, we replace x with 129 to get
-4x = -4*129 = -516
find a ! please :))))
Answer:
21.8 cm
Step-by-step explanation:
[tex] \\ 180 - 75 - 31.8 = 37.2 \\ \frac{ \sin(75) }{22} = \frac{ \sin(31.8) }{12} = \frac{ \sin(73.2) }{a} \\ a = \frac{22 \times \sin(73.2) }{ \sin(75) } = \\ a = \frac{21.06}{0.9659} = 21.8[/tex]
26 points!!
feet. What is the volume of the box?
A box has a length of 4 feet, a width of 24 feet, and a height of 1
O A 17 cubic feet
OB. 8 cubic feet
O C. 8 - cubic feet
OD. 35 cubic feet
Answer:
yes
Step-by-step explanation:
what is the mean of this data set? 11,12,16,11,15,19,13
Answer:
13.857142
Step-by-step explanation:
Took a lot of math.
What is the volume?
1 mm
1 mm
1 m
Answer:
volume equals length times width times height
Step-by-step explanation:
Help me please, Due Today.
Answer:
D,F and E,G are parallel
Step-by-step explanation:
slove with cool mind
The value of a boat is depreciating at a rate of 7% per year. In 2006, the boat was worth $17,300. Find the value of the boat in 2011. Enter the exponential decay function for this situation.
The exponential decay function is y = .
In 2011 the boat will be worth $ .
Answer:
Step-by-step explanation:
[tex]V=Ar^t\\ \\ V=17300((100-7)/100)^t\\ V=17300(0.93)^{(y-2006)}\\ V(2011)=17300(0.93)^{(2012-2006)}=\$ 11192.29[/tex]
1). Solve for n n - 63 = 126 *
Answer:
n=189
Step-by-step explanation:
[tex]n-63=126\\n=126+63\\n=189[/tex]
I hope this helps! :)
Brainliest? ✨
what is x 4(x-2)=2(x+1)
X = 5
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
X=5
4(x-2)=2(x+1)
4x-8=2x+2
+8 +8
4x=2x+10
-2x -2x
2x=10
2x 2x
X=5
Fernando had 2 children. Each of their children had 2 children, and each of these
He had 2 children. How many grandchildren did Fernando have?
Answer:
4 grand children
Step-by-step explanation:
Answer:
6 grandkids
Step-by-step explanation:
fernando has 2 kids and each had their own sets of kids so
1 fernando's kid 1 fernando's kid
2 grandchildren 2 grandchildren
=4 grandchildren in total
you said the grandchildren had kids as well so
2+4=6
help please will mark brainliest
Answer:
I think 1, 4, 5 and 7
Step-by-step explanation:
Simplify (1/2)^4
1/10
1/8
1/4
Answer:
1/8
Step-by-step explanation:
[tex] \bigg( \frac{1}{2} \bigg)^{4} = \\ \\ = \frac{1}{8} [/tex]
I have 7 cups of yogurt give my sister 3 3/5 cup how yogurt remains?
Answer:
3 2/5 cups remaining
Step-by-step explanation:
To subtract fractions, they need a common denominator. I am using 5.
7 is equal to 35/5. Make 3-3/5 into an improper fraction of 18/5.
Now subtract: 35 - 18 = 17. There is 17/5 remaining.
Make it into a mixed number and you will get 3 2/5 remaining.