Answer:
Step-by-step explanation:
I am pretty sure it’s 4/9 * 6/5 = x
( I think it’s this )
PLZ HELP ME THIS IS 7th GRADE MATH
Answer:
I am so sorry I dont get it
Answer:
if the scale factor is asking for how much the square was scaled up then it would be 1,938 if its asking for the fraction to be simplified then find the amount it was scaled up it would be 45
Step-by-step explanation:
On a cold winter day, the temperature in minimal was 12 degrees below zero. On the same day, the temperature in Anchorage was-21 Degrees below zero. In which city was it colder? Explain how you know...
Please help
Answer:Minneapolis was colder because −14<−23.
Step-by-step explanation:Here are the low temperatures (in Celsius) for one week in Juneau, Alaska:
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
5 -1 -6 -2 3 7 0
Arrange them in order from coldest to warmest temperature.
On a winter day, the low temperature in Anchorage was 23 degrees below zero (in ∘C ) and the low temperature in Minneapolis was 14 degrees below zero (in ∘C ). Sophia wrote,
Simplify (4+y) + (8y - 5)
Answer:
it is 9y-1
Step-by-step explanation:
You have to simplify the expressions.
Martha earns $15 per hour for babysitting. The parents always giver her a $5 tip.
What is the y-intercept in this situation?
Enter the correct answer in the box.
? Dollars
Answer:
y=15x+5
Step-by-step explanation:
Please help i need answers am bad at math
Answer:
1) 2 5/9
2) 4 5/6
3) 4 3/8
4) 5 3/5
5) 7 1/3
6) 6 1/9
7) 7 1/8
8) 2 2/9
9) 5 3/4
Step-by-step explanation:
Hope this helps
Brandon opened a checking account with $125 and deposits $25 into it every week. He opened another account with $225 and deposits $35 into it every week. a. Write a simplified expression to represent how much he will have in both accounts after w weeks. b. After 15 weeks, how much money will he have?
Answer:
A. 60w+350
B.1250
Step-by-step explanation:
w weeks later money =
Money first account -125+25w
Money second acount-225+35w
Total-60w+350
15 weeks =60(15)+350= 900+350=1250
Can someone help me with this
2 can be the same or more helpppppp
answer:
4d + 2w and 1/2(8d + 4w)
- read each line correctly and try to make something out of it, if that makes sense
Find the total surface area of this cylinder.
Give your answer to 1 decimal place.
24 cm
18 cm
Step-by-step explanation:
2(22/7)12²+2(22/7)(12)(18)
=2021.9
A 25 foot ladder is leaning against a building. The foot of the ladder is 7 feet from the base of the building. What is the angle the
ladder makes with the building?
Answer:
Step-by-step explanation:
You have the hypotenuse and the adjacent, so use cosine.
SOHCAHTOA
Take the inverse cosine of both sides, which requires a calculator
cos(Ф) = 7/25
Ф = 73.74°
Someone was interested in determining if there is a difference in the proportion of US adults that working hard was the most important thing for a child to learn in 2012 and 2018. They found data on this in the General Social Survey. In 2018, out of 1542 respondents, 415 said it was the most important. In 2012, out of 1323 respondents, 326 said it was the most important. Find the margin of error with 95% confidence.
Answer:
0.01521
Step-by-step explanation:
The Margin of Error for Difference in Proportions is given as:
z × √p1 × (1 - p1)/n1 - p2 × (1 - p2)/n2
z = z score for 95% confidence interval
= 1.96
In 2018, out of 1542 respondents, 415 said it was the most important.
p1 = x1/n1
x1= 326 n1 = 1323
p1 = 326/1323
0.246409675
Approximately = 0.246
In 2012, out of 1323 respondents, 326 said it was the most important.
p2 = x2/n2
x2 = 415, n2 = 1542
p2= 415/1942
p2 = 0.2136972194
Approximately = 0.214
Margin of Error =
1.96 × √0.246× (1 - 0.246)/1323- 0.214 × (1 - 0.214)/1542
1.96 × √0.0005699169 - 0.0005097276
1.96 × √(0.0000601893)
1.96 × 0.0077581763
= 0.0152060256
Approximately = 0.01521
Therefore, Margin of Error = 0.01521
You can use the formula for margin of error for difference in proportion to find the margin of error with 95% confidence.
The margin of error with 95% confidence for the given data is given by
MOE = 0.32
How to calculate margin of error for difference in proportion to find the margin of error ?Suppose we've two samples with sample sizes [tex]n_1[/tex] and [tex]n_2[/tex] respectively. Let the interested quantities found out in those samples out of their sample sizes are [tex]x_1[/tex] and [tex]x_2[/tex] respectively. Then we have the margin of error for difference in proportion to find the margin of error as:
[tex]MOE = Z_{\alpha/2} \times \sqrt{\dfrac{p_1(1-p_1)}{n_1} + \dfrac{p_2(1-p_2)}{n_2}}[/tex]
where we have:
[tex]p_1 = \dfrac{x_1}{n_1}\\\\p_2 = \dfrac{x_2}{n_2}[/tex]
and
[tex]\alpha = \text{Level of significance}[/tex]
Using the given data to get the margin of error[tex]Year = 2015\\n_1 = 1542\\x_1 = 415\\\\Year = 2012\\n_2 = 1323\\x_2 = 326\\\\\alpha = 100-95\% = 1-0.95 = 0.05[/tex]
For 95% confidence, we have Z score as 1.96
The proportions are calculated as:
[tex]p_1 = \dfrac{415}{1542} = 0.269\\\\p_2 = \dfrac{326}{1323} = 0.246[/tex]
Thus, margin of error is calculated as
[tex]MOE = 1.96 \times \sqrt{\dfrac{0.269 \times 0.731}{1542} + \dfrac{0.246 \times 0.754}{1323}} = 1.96 \times \sqrt{0.000127 + 0.00014}\\\\MOE = 1.96 \times 0.01634 = 0.032[/tex]
The margin of error with 95% confidence for the given data is given by
MOE = 0.32
Learn more about margin of error here:
https://brainly.com/question/4757147
can someone help me
Answer:
30
Step-by-step explanation:
Given
f(x) = x² - x
Then
f(-5) = (-5)² - (-5)
= 25 + 5
= 30
PLEASE PLEASE HELP THANKS SO MUCH
Answer:
a= 12
b= 9
I hope this helps
Answer:
a=12
b=9
Step-by-step explanation:
b=0.75a
a+b=21
a+0.75a=21
1.75a=21
a=12
a+b=21
12+b=21
b=9
Jennifer has a hair ribbon that is 12 centimeters long. What is the length of the ribbon in millimeters? will mark brainliest
Answer:
120 mm
Step-by-step explanation:
(10p) An actuary has discovered that policyholders are three times as likely to le two claims as to le four claims. The number of claims led has a Poisson distribution. Compute the variance of the number of claims led. You can use, without a proof, that the variance of a Poisson distribution is equal to its mean.
Answer:
Hello your question is poorly written below is the complete question
An actuary has discovered that policyholders are three times as likely to file two claims as to file four claims. If The number of claims filed has a Poisson distribution. Compute the variance of the number of claims filed. You can use, without a proof, what is the variance of a Poisson distribution is equal to its mean
answer : variance = 2
Step-by-step explanation:
compute the variance of the number of claims filed
x = number of claim filed
For Poisson distribution
mean = variance = Л
∴ Variance = 2
10 points
Elizabeth was cleaning her purse on Monday. She discovered $4.60 in the bottom of her purse. The coins were only dimes and nickels. She had a total of 49 coins
and solve a system of equations to determine how many of each coin Elizabeth has.
1 Drag ni Drop here or Browse
I
$4.60= 49 coins ( she only had dimes and nickles)
100 dimes= $1.00 times 4 is 400 dimes
12 nickels= .60 cents
all of this will = to $4.60
Listed are 32 ages for Academy Award winning best actors in order from smallest to largest. (Round your answers to the nearest whole number.) 18; 18; 21; 22; 25; 26; 27; 29; 30; 31; 31; 33; 36; 37; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74; 76; 77 (a) Find the percentile of 37. th percentile
Answer:
34.5
Step-by-step explanation:
Given the data:
X : 18; 18; 21; 22; 25; 26; 27; 29; 30; 31; 31; 33; 36; 37; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74; 76; 77.
The 37th Percentile :
37/100(n + 1)th term
n = sample size = 32
Therefore,
0.37(32 + 1)th term
0.37(33)th term = 12.21 th term
(12th + 13th) term ÷ 2
(33 + 36) / 2
69 / 2
34.5
The 37th percentile is 34.5
The dimensions of a miniature model are proportional to the dimensional of the actual building
Answer:
The model and the actual building would be similar
Step-by-step explanation:
3/4 - 4x + 1/2x - 1/2 + 1/2x Combine the like terms to simplify. Show your work
If you mean,
[tex] \frac{3}{4} - 4x + \frac{1}{2} x - \frac{1}{2} + \frac{1}{2}x[/tex]
Then the answer would be,
[tex] \frac{1}{4} - 3x[/tex]
But if you mean,
[tex] \frac{3}{4} - 4x + \frac{1}{2x} - \frac{1}{2} + \frac{1}{2x} [/tex]
Then the answer would be,
[tex] \frac{1}{4} - 4x + \frac{1}{x} [/tex]
Jake has a pool in his backyard. He wants to know how much water it holds.
0.9 m
1.8 m
2.5 m
What is the volume of the pool?
A. 1.62 m3
B. 4.05 m
13
O C. 5.20 m
D. 16.74 m3
Answer:
B 4.05^3
Step-by-step explanation:
Just mulityply
8) Saatteki hızı 90 km olan bir aracın 4 saatte aldığı
? yolu hızı 80 km olan bir araç kaç saatte alır?
Answer:
what????
Step-by-step explanation:
I can't understand
Pedro bought 7 tickets to a basketball game. He paid a total of $168. Enter an equation, using x as your variable, to determine whether each ticket cost $24 or $25.
Answer:
The answer is each ticket cost $24
Step-by-step explanation:
multiply 24 by 7
24*7=168
What is the smallest unit of time? (Hint: its not a nanosecond or a microsecond or a second)
a championship swimmer swims 20 meters in 10 seconds. what is his speed
Answer:
his speed is 2 meters per second
Answer:
his speed is 2 meters per second
Step-by-step explanation: none
10.A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and askedto determine if the card was one of five symbols: a star, cross, circle, square, or three wavy lines. Thepsychic was correct in 50 cases. To determine if he has ESP, we want to know if his success rate is betterthan someone who just guesses. That is, we test the hypotheses H0: p
Answer:
Step-by-step explanation:
The sample proportion [tex]\hat p = \dfrac{50}{200}[/tex]
[tex]\hat p = 0.25[/tex]
The null hypothesis and the alternative hypothesis:
[tex]H_o: p = 0.20 \\ \\ H_1 : p > 0.20[/tex]
Thus; the test statistics is:
[tex]Z = \dfrac{\hat p - p_o}{\dfrac{p_o(1-p_o)}{n} }[/tex]
[tex]Z = \dfrac{0.25 -0.20}{\sqrt{\dfrac{0.20(1-0.20)}{200} }}[/tex]
[tex]Z = \dfrac{0.05}{\sqrt{\dfrac{0.16}{200} }}[/tex]
[tex]Z = \dfrac{0.05}{\sqrt{0.0008 }}[/tex]
[tex]Z = 1.768[/tex]
P-value = 2 × P(Z< - 1.768)
From the z tables
P-value = 2 × 0.03853
P-value = 0.07706
Thus, the p-value is 0.05 < P-value < 0.10
....................
Answer:
x = 24
Step-by-step explanation:
20 x 6 = 120
5 x 24 = 120
5(24) divided by 6 = 120/6 = 20
hope i helped you!
if $15,000 is invested at 12% interest compounded monthly, find the interest earned in 12 years.
Answer:
A
Step-by-step explanation:
It’s a
Answer:
62859.23
Step-by-step explanation:
our equation is as follows
[tex]PV(1+\frac{i}{n})^{nt)}\\\\15000(1+\frac{.12}{12})^{12*12}\\15000(1+.01)^{144}\\\\62859.23[/tex]
Please help me I need this I need a good grade or my mom spank me.
Answer:
Thats correct.
Step-by-step explanation:
SOMEONE PLEASE PLEASE HELP ASAP
A rectangular prism has a square top and bottom and is 8cm tall. If the surface area is 72 square centimeters, determine its volume.
Answer:
576
Step-by-step explanation:
base times height
so 72*8
which is 576