Answer:
(mkkwkskskwkwskskwkwi
sin 0
4. Find tan0 .
A.
B.
C.
D.
Answer:
A
Step-by-step explanation:
Answer:
D. 9/40 would be the answer.
Step-by-step explanation:
formula
sinQ= opp/hyp (9/41)
TanQ= opp/adj (which mean 9 /40)
Help and no links plzz
Answer:
20
Step-by-step explanation:
2 1/2 = 5/2
(5/2)/(1/8) = 20
Dmitri wants to cover the top and sides of this box with glass tiles that are 1 cm square. How many tiles
will he need?
8 cm
20 cm
Dmitri will need
18 cm
glass tiles.
9514 1404 393
Answer:
968
Step-by-step explanation:
The area of the top and sides is given by the formula ...
A = LW +2H(L +W)
A = (20 cm)(18 cm) +2(8 cm)(20 cm +18 cm)
A = (360 +16(38)) cm² = 968 cm²
Since the tiles are 1 cm², 968 tiles are needed.
Ann is mailing packages. Each small package costs her $2.10 to send. Each large package costs her $3.30. How much will it cost her to send 6 small packages
and 7 large packages?
Answer:
$35.70
Step-by-step explanation:
small package: 2.10×6=12.60
large package: 3.30×7=23.10
total: 23.10+12.60=35.70
¿Cual es el diámetro del círculo que se puede trazar con un compás cuyo brazos miden 10 cm y forman un ángulo 34?
Answer:
Sorry that it is in english.
Step-by-step explanation:
The arms of the compass mesure the radius.
[tex]r=10\\2r=diamater (d)\\2*10=d\\20=d[/tex]
a motorbike has been marked down by 38% to $130000.what is the original price?
Answer:
49400
Step-by-step explanation:
Answer:
so 38 % of 130000 = 49,400
so now after loss it's original price will be 130000-49400(38%)
=$800600
The owner of Showtime Movie Theaters, Inc., used multiple regression analysis to predict gross revenue (y) as a function of television advertising (x1) and newspaper advertising (x2).
Weekly Gross Revenue Television Advertising Newspaper Advertising
() () ()
97 5.0 2.5
90 2.0 2.0
96 5.0 2.5
93 3.5 2.5
95 3.0 4.3
95 4.5 2.3
94 2.5 5.2
94 3.0 2.5
The estimated regression equation was:_______
Answer:
ŷ = 1.85057X1 + 0.9688X2 + 84.77516
Step-by-step explanation:
Given the data:
Weekly Gross Revenue (Y) :
97
90
96
93
95
95
94
94
Television Advertising (X1) :
5
2
5
3.5
3
4.5
2.5
3
Newspaper Advertising (X2) :
2.5
2
2.5
2.5
4.3
2.3
5.2
2.5
The regression equation obtained using a multiple regression calculator is :
ŷ = 1.85057X1 + 0.9688X2 + 84.77516
x1 and x2 are the predictor variables
y is the predicted variable (Weekly Gross Revenue).
Slope x1 = 1.85057
Slope x2 = 0.9688
Intercept = 84.77516
A population of values has a normal distribution with u = 69.4 and o = 18.9. You intend to draw a random
sample of size n = 185. Please show your answers as numbers accurate to 4 decimal places.
Find the probability that a single randomly selected value is between 65.9 and 68.8.
P(65.9 < X < 68.8) =
Find the probability that a sample of size n = 185 is randomly selected with a mean between 65.9 and 68.8.
P(65.9 < < 68.8) =
Answer:
234
Step-by-step explanation:
solve x + 1 > 3. graph the solution. can someone help me out??
Answer:
x>2
Step-by-step explanation:
x+1>3
x>3-1
x>2
I hope this helps
For the right triangles below, find the exact values of the side lengths b and a. If necessary, write your responses in simplified radical form. 300 Х X 5 ? 459 5 4= 45° 60 3
Answer:
who knows
Step-by-step explanation:
The seventh-grade class supplied bags of snacks and beverages for the school dance. They supplied 50 more beverages than bags of snacks. The dance was supplied with a total of 400 items. How many of each were supplied.
A) Define the variables.
B) Write a systems of equations for the situation.
C) Graph the system.
Answer:
C
Step-by-step explanation:
Hope this help and have a nice day
Tom went to a car show over the weekend. he saw 5 blue cars, 2 white trucks, and 10 black cars. what is the ratio of black cars to all motor vehicles.
please help please please please please please.
Answer:41
Step-by-step explanation:the week end is three days and he saw 5 blue car and 2 white car and 10 black car multiple 5 times 3 and = 15 now multiple 2 times 3 = 6 then add 15 and 6 and 10
Answer:
I think it is 10:17 the ratio
Find the median of the data in the dot plot below.
Answer:
41
Step-by-step explanation:
41 cause its the middle
The steps to simplify the expression 5÷1 over 100 times-0.7 times -20 oh shown below with one missing step which is the missing step
Answer:
i did it 4 times and the answer is D
Step-by-step explanation:
Answer:
Option D) is Correct
Step-by-step explanation:
I took the test on T4L and got it right.
Parallelogram MNPQ was dilated to create parallelogram M'N'P'Q'.
On a coordinate plane, 2 parallelograms are shown. Parallelogram M N P Q has points (2, negative 2), (4, negative 2), (3, negative 3), and (1, negative 3). Parallelogram M prime N prime P prime Q prime has points (5, negative 5), (10, negative 5), (8, negative 7), and (3, negative 7).
Which statements are true about the parallelograms? Select three options.
The length of side MN is 2 units.
The length of side M'N' is 5 units.
The image is smaller than the pre-image.
Sides MQ and M'Q' both have the same slope, 1.
The scale factor is Two-fifths.
Answer:
134
Step-by-step explanation:
yeah no
Use the remainder theorem and synthetic division to find f(k) for the given value of k.
Answer:
3
Step-by-step explanation:
Given that,
[tex]f(x) =-x^3-8x^2-15x+3[/tex]
We need to find the value of f(x) when k = -5
Put x = -5 in th given function.
So,
[tex]f(-5) =-(-5)^3-8(-5)^2-15(-5)+3\\\\=3[/tex]
Hence, the value of the given function is equal to 3.
The width of a rectangle is 2 3/8 inches. The rectangle is 1 3/4 inches longer than it is wide Find the Length of the rectangle and preimeter of the rectangle
Answer:
We need to find length and width. To find two unknowns we need two equations.
P = 2L + 2W = 34
L = W + 3
34 = 2(W + 3) + 2W
34 = 2W + 6 + 2W
28 = 4W
W = 7
L = 7 + 3 = 10
The length is 10 inches and the width is 7 inches.
Step-by-step explanation:
A student researcher compares the ages of cars owned by students and cars owned by faculty at a local state college. A sample of 263 cars owned by students had an average age of 7.25 years. A sample of 291 cars owned by faculty had an average age of 7.12 years. Assume that the population standard deviation for cars owned by students is 3.77 years, while the population standard deviation for cars owned by faculty is 2.99 years. Determine the 90% confidence interval for the difference between the true mean ages for cars owned by students and faculty. Step 1 of 3: Find the point estimate for the true difference between the population means.
Answer:
The point estimate for the true difference between the population means is 0.13.
The 90% confidence interval for the difference between the true mean ages for cars owned by students and faculty is between -0.35 years and 0.61 years.
Step-by-step explanation:
To solve this question, before building the confidence interval, we need to understand the central limit theorem and subtraction between normal variables.
Central Limit Theorem
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
Subtraction between normal variables:
When we subtract two normal variables, the mean is the subtraction of the means while the standard deviation is the square root of the sum of the variances.
A sample of 263 cars owned by students had an average age of 7.25 years. The population standard deviation for cars owned by students is 3.77 years.
This means that:
[tex]\mu_s = 7.25, \sigma_s = 3.77, n = 263, s_s = \frac{3.77}{\sqrt{263}} = 0.2325[/tex]
A sample of 291 cars owned by faculty had an average age of 7.12 years. The population standard deviation for cars owned by faculty is 2.99 years.
This means that:
[tex]\mu_f = 7.12, \sigma_f = 2.99, n = 291, s_f = \frac{2.99}{\sqrt{291}} = 0.1753[/tex]
Difference between the true mean ages for cars owned by students and faculty.
Distribution s - f. So
[tex]\mu = \mu_s - \mu_f = 7.25 - 7.12 = 0.13[/tex]
This is also the point estimate for the true difference between the population means.
[tex]s = \sqrt{s_s^2+s_f^2} = \sqrt{0.2325^2+0.1753^2} = 0.2912[/tex]
90% confidence interval for the difference:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.9}{2} = 0.05[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.05 = 0.95[/tex], so Z = 1.645.
Now, find the margin of error M as such
[tex]M = zs = 1.645*0.2912 = 0.48[/tex]
The lower end of the interval is the sample mean subtracted by M. So it is 0.13 - 0.48 = -0.35 years
The upper end of the interval is the sample mean added to M. So it is 0.13 + 0.48 = 0.61 years.
The 90% confidence interval for the difference between the true mean ages for cars owned by students and faculty is between -0.35 years and 0.61 years.
18. Emma rents a car from a company that rents cars by the hour. She has to pay an initial fee of $75, and then they charge her $9 per hour. Write an equation for the total cost Cif Emma rents the car for h hours. If Emma has budgeted $250 for the rental cars, how many hours can she rent the car? Assume the car cannot be rented for part of an hour.
Step-by-step explanation:
Let h be the number of hours.
Total Cost = Fixed Costs + Variable Cost
= Initial Fee + Hourly Charge
= 75 + 9h
Given,
[tex]75 + 9h = 250 \\ 9h = 250 - 75 \\ 9h = 175 \\ h = 175 \div 9 \\ = 19 \frac{4}{9} hr[/tex]
Since the car cannot be rent part of an hour, the highest possible whole number is 19 hours.
HELP ITS TIMED WILL GIVE BRAINLYIST
Answer:
C
Step-by-step explanation:
“Snoqualmie” is a name shared by a waterfall and a tribe of Native Americans. In a study of the cultural importance of the waterfall, two groups of the Snoqualmie tribe were randomly surveyed. One group consisted of Snoqualmie members living less than 25 miles from the waterfall. Another group consisted of Snoqualmie members living more than 25 miles from the waterfall. The researchers asked each member to rate the cultural importance of the waterfall as low, medium, or high. Data from the study are presented in the following table.
Answer: E ( (17)(50)/88 )
Step-by-step explanation:
(Row total * column total) / table total
Find the difference: (6a + 6) - (3x - 2) - (2a + 4)
Answer:
4 a − 3 x + 4
Step-by-step explanation:
I just simplified everything together to get this answer.
Hope that this helped! :)
Have a great rest of your day/night!
Please thank me on my profile if this answer has helped you!
What is the surface area of the cube shown? 6.5cm 6.5cm
Answer:
SA = 253.5 cm
Step-by-step explanation:
SA = 6a^2
SA = 6(6.5)^2
SA = 6(42.25)
SA = 253.50 cm
Justin recently drove to visit his parents who live 300 miles away. On his way there his average speed was 11 miles per hour faster than on his way home (he ran into some bad weather). If Justin spent a total of 10 hours driving, find the two rates.
Answer:
x=1
Step-by-step explanation:
I will vote Brainliest to whoever gets it right.
(It's not 2)
4 = a - 6
Answer:
its 10
Step-by-step explanation:
add the numbers, 4 and 6 where you'll get 10
find the the ratio write the answer as a fraction and as a decimal rounded to four decimal places.
Answer:
7 degrees
Step-by-step explanation:
It has a right angle and it's a triangle so the angle is a complementary angle so the total for the angle is 90 degrees.
So then you add 39 + 44 and get 83
So, 90 - 83 +7
So your total is 7 degrees
2(a+b)+ 4m(a+b) factor out the greatest common factor
Step-by-step explanation:
Find the Greatest Common Factor (GCF).
[tex]gcf = 2(a + b)[/tex]
Factor out the GCF.
[tex]2(a + b)( \frac{2(a + b)}{2(a + b)} + \frac{4m(a + b)}{2(a + b)} [/tex]
now, Simplify each term in parentheses.
[tex]2(a + b)(1 + 2m)[/tex]
hence, if we factor out the GCF (greatest common factor), we get the answer 2 (a + b) (1 + 2m).
For whole numbers between 1 and 1001, inclusive, let m be the sum of odd numbers and n be the sum of even numbers. What is the value of m−n?
Answer:
m - n = 501
Step-by-step explanation:
Remark
The first thing you have to do is find the number of odd and even numbers. This is where you have to be careful because there is a danger of being out by one.
equation
l = a + (n - 1)*d
Solution even
l = 1000
a = 2
d = 2
1000 = 2 + (n - 1)*2
998/2 = (n - 1) * 2 / 2
499 = n - 1
n = 500
Solution odd
l = 1001
a = 1
d = 2
1001 = 1 + (n - 1)*2
1000 = (n - 1)*2
1000/2 = (n - 1)2/2
500 = n - 1
501 = n
Sum Even of even numbers from 1 to 1001
Givens
a = 2
n = 500
l = 1000
Equation
Sum = (a + l ) * n / 2
Solution
Sum = (2 + 1000)*500/2
Sum = 1002 * 250
Sum = 250500
Sum of Odd numbers from 1 to 1001
a = 1
l = 1001
n = 501
Equation
sum = (a + l)*n/2
sum = (1 + 1001) * 501
sum = (1002)*501 / 2
Sum = 251001
Answer
m - n = 251001 - 250500 = 501
The graph represents the number y of attendees to a market research conference after x years.
Write an exponential function that represents the number of attendees to the conference.
Ok, I hope im right. (Others correct me if im not. But when I worked out this problem I got y is approximatly 4,882 attendees after 6 years.
Gathering info from the graph I created a table
(0,20) , (1,30) , (2,45), ...
I found the difference between the points listed. For example, 30÷20 is 1.5. So, each point is multiplied times 1.5 to continue the sequence.
Use the equation: y=a(1+r)^t
Remember what each variable stands for. That way you can plug in the correct information
Continuing..
y=a(1+r)^t
y=20(1+1.5)^t ; combine like terms
y=20(2.5)^t
b) Plug in the # of years. 6 in our case, everywhere you see a t
y=20(2.5)^6
y is approximately equal to 4882.8125
Round because we can only have whole numbers. we're talking about people.
I hope I got this right. But, if not, I tried
please help asap
photo attached
choices are
A. -8
B. -6
C. 0
D. 22
