2/3 I hope this helps!! :3
Another friend's distance d from you (in feet) after t seconds is given by
d = |80 - 5t|. What does the 80 in the equation represent? What does the 5 in the equation represent? At what times is she 60 ft from you?
There is sales of 40% off of the original price. If a mobile phone has a sale price of $180, what was the original price? Choose the correct answer.
A) $200
B) $280
C) $300
D) 320$
Answer:
$300
Step-by-step explanation:
If the phone has a discount of 40% that means it cost 60% of the original price
X= original price (100%)
$180 = 60% of the original price
X = 100%
CROSS MULTIPLICATION
60X = 180x100
60X = 18000
Divide both sides by 60
X = 300
Find the start time.
Start time:____ P.M.
Elapsed time: 2 1/4 hr
End time: 4:44 P.M.
Answer:
2:29 PM
Step-by-step explanation:
Answer:
2:30
Step-by-step explanation:
I think sorry if I'm wrong
how many is 360 divided by 60?
Answer: 6
Step-by-step explanation:
360 divided by 60 =6
If the spinner is spun one time, what is the probability of the arrow NOT landing on a section labeled with an even number?
What is the vertex of y=−2x2−4x−5
?
Question 1 options:
(−1,−3)
(−2,−3)
(1,−1)
(−1, 3)
Answer:
2x2-4x-5=0..........
A triangle has side of lengths 5ft, 9ft and 13ft what is the measure of the angle opposite the side of 9ft long? Round to the nearest degree
Stefan sells Jin a bicycle for 135 and a helmet and a helmet for 19 the total cost for Jin is 140% of Stefan spent originally to buy the bike and helmet how much did Stefan spend originally how much money did he make by selling the bicycle and helmet to Jin
Answer:
Originally Stefan spent $ 110, and made $ 30 selling the bike and helmet to Jin.
Step-by-step explanation:
Given that Stefan sells Jin a bicycle for $ 135 and a helmet for $ 19, and the total cost for Jin is 140% of what Stefan spent originally to buy the bike and helmet, to determine how much did Stefan spend originally and how much money did he make by selling the bicycle and helmet to Jin, the following calculation must be performed:
100 + 140 = 240
140 = 135 + 19
100 = X
(100 x (135 + 19)) / 140 = X
100 x 154/140 = X
15,400 / 140 = X
110 = X
So originally Stefan spent $ 110, and made $ 30 selling the bike and helmet to Jin.
Can you plz help right answer plz
Answer:
4.8 inches
Step-by-step explanation:
A bike travels 7 feet in 1/3 of a second
At the same speed, how many feet will
it travel in 5 seconds?
A) 35 feet
B) 155 feet
C) 105 feet
D) 21 feet
A) 35 Feet
7x5-35
Answer:
C) 105 feet
Step-by-step explanation:
7(15) = 105 feet
Answer:
C
Step-by-step explanation:
Set one second to x
7 = 1/3x
5÷1/3 = 15
7*15 = 105
Thus, we get C, or 105 as our answer
Find the midpoint between -1/11 and 9/11. Pls, help asap! :)
Answer:
(4,11) is the midpoint :)
Step-by-step explanation:
it would be
(-1,11), (9,11)
-1+9/2, 11+11/2
8/2, 22/2
4,11
Find the missing side of the triangle
Answer:
195^2 + 28^2 = x^2
38025 + 784 = x^2
38809 = x^2
square root both sides
x = 197
A study was conducted to examine the quality of fish after seven days in ice storage. For this study Y = measurement of fish quality (on a 10-point scale with 10 = BEST.)
X = # of hours after being caught that the fish were packed in ice. The sample linear regression line is: Y = 8.5 - .5X. From this we can say that:
a. a one-hour delay in packing the fish in ice increases the estimated quality by 0.5.
b. Can't really say until we see a plot of the data.
c. a one-hour delay in packing the fish in ice decreases the estimated quality by 0.5.
d. if the estimated quality increases by 1, then the fish have been packed in ice two hours later.
e. if the estimated quality increases by 1, then the fish have been packed in ice one hour sooner.
Answer:
From this we can say that;
c. A one-hour delay in packaging the fish in ice decreases the estimated quality by 0.5
Step-by-step explanation:
The sample linear regression line representing the study of the relationship between the quality of fish, 'Y', and the number of hours that elapse after being caught that the fish were packed in ice, 'X', is presented as follows;
Y = 8.5 - 0.5·x
The estimated quality of a fish after a 1 hour delay in packaging in ice, is given as follows;
When X = 1
Y = 8.5 - 0.5 × 1 = 8.0
Therefore, the quality of a fish decreases from 8.5 to 8.0 which is equivalent to a 0.5 decrease in the quality of the fish, after a 1 hour delay in packaging in ice after being caught.
2. Which expression is equivalent to (9n - 7) - (6n + 5)?
A. 3n - 2
B. 3n - 12
C. 13n - 2
D. 13n - 10
Quadrilateral A'B'C'D'is the result of rotating quadrilateral ABCD by 60° about the origin.
Choose all answers that apply
a. BC and B'C' are both parallel to the y-axis
b. <B and <B' have the same measures
c. D and D' have the same coordinates
d. none of the above
Answer:
a. No
b. Yes
c. No
Step-by-step explanation:
a. For BC and B'C to both be parallel to the y-axis when BC is parallel to the y-axis the figure must be rotated by a multiple of 180 degrees.
b. When you rotate a figure none of the angles in the figure change.
c. For D and D' to have the same coordinates the figure must be rotated by 360.
A theatre has 46 rows.
There are 42 seats in each row.
During a show at the theatre, there are 50 empty seats.
Work out how many people are watching the show.
Answer:
1882
Step-by-step explanation:
46x42=1932 1932-50=1882
A golf pro wants to determine if Titleist Pro V1 golf balls (1) travel farther, on average, than Callaway Chrome Soft golf balls (2). A robot hits 9 of each ball, selected at random, and the distance traveled is measured. Assume the distances traveled are normally distributed. The average distance traveled by the 9 Titleist Pro V1 golf balls is 261.1 yards with standard deviation 10 yards, and the average distance traveled by the 9 Callaway Chrome Soft golf balls is 249.3 yards with standard deviation 12 yards.
Which test should the golf pro use to determine if Titleist Pro V1 golf balls travel a longer average distance than Callaway Chrome Soft golf balls?
a. pairedt test for means
b. paredz test for means
c. Ottest for proportions
d. test for means
e. test for means
f. Ottest for proportions
Complete options are;
A) Paired t-test for means
B) Paired Z-test for means
C) Z-test for proportion
D) t-test for means
E) Z-test for means
F) t-test for proportion
Answer:
B) Paired Z-test for means
Step-by-step explanation:
We are told that the distances travelled are normally distributed.
We are also trying to find out if the average distance travelled by the Titleist Pro V1 golf balls is farther than that of the Callaway Chrome Soft golf balls.
Also, the standard deviation of both cases are known.
Thus, this is where Paired Z-test for means is used.
According to the desired test, the correct option is:
a. paired t-test for means
At the null hypothesis, it is tested that ball 1 does not travel farther than ball 2, that is, the subtraction is of at most 0:
[tex]H_0: \mu_1 - \mu_2 \leq 0[/tex]
At the alternative hypothesis, it is tested if it travels farther, that is:
[tex]H_1: \mu_1 - \mu_2 > 0[/tex]
Since we have the standard deviation for the sample, the t-distribution is used.The values tested are greater than 1, hence, the test is for means.There are two samples, hence a paired test is used.Considering the three bullet points above, the correct option is a.
For more on a paired t-test for means, you can check https://brainly.com/question/16162795
a piece of work can be completed in 30 days by 10 men. if the work is to be completed 5 days earlier, how many more men are needed? (assume that the men work at the same rate)
Answer:
so, if 10 men can do it In 30 days, that means a total of 300 "man days".
300 man days divided by 25 days would be 12- so 2 more men.
OMG HELP ME PLEASEEEEEEEEEEEEEEEEEEEEEEEE
Which choices are correct when determining the distance between −56 and 44?
A) The distance is 12 units.
B) The distance is 100 units.
C) distance = |−56 + 44|
D) distance = |−56 − 44|
E) distance = −|−56 + 44|
The correct way of determining the distance between −56 and 44 is distance = |−56 − 44|
What is distance?Distance is referring to the numerical measurement of how far an object is from a particular place.
Given that, what is correct way to determine the distance between -56 and 44,
So, the distance will be = |-56-44|
= |-100|
= 100
Hence the correct way of determining the distance between −56 and 44 is distance = |−56 − 44|
Learn more about distance, click;
https://brainly.com/question/15172156
#SPJ3
what is bigger 1 yard or 35 inches
Answer:
1 yard
Step-by-step explanation:
in a yard there is 36 inches
Find the
area of each
triangle.
9 m
5 m
8m
Answer:
22.5 [tex]m^{2}[/tex]
Explanation:
The equation for the area of a triangle is [tex]\frac{1}{2}[/tex]bh
In this case, the base is 9 m and the height is 5 m
9x5=45
45/2= 22.5
what's 1/10 of 4 meters
Answer:
2/5
Step-by-step explanation:
1/10 * 4 = 4/10
=2/5
Hope this helps :)
Which arrangement of blocks has the least surface area?
Answer:
8 cubes separated
Step-by-step explanation:
About 25% of the students at a college are freshmen. Of those, about 50% are women. Does that mean that 75% of the students at the college are freshmen women? Explain
Which of the following would be the most logical first step to solving this
quadratic equation?
x2 - 4x + 16 = 2
Answer:
subtract 2 on both sides
What is the solution to this inequality?
-13x> -39
A. X> 3
B. X<-3
C. X > -3
O
D. x < 3
Answer:
D
Step-by-step explanation:
The answer is D, because when you divide x by a negative the sign changes
I WILL GIVE BRAINLIEST :)
The two lines graphed on the coordinate grid each represent an equation
Which ordered pair represents a solution to both equations?
(1,5)
(-5,1)
(5,1)
(-1,5)
Answer:
I think it would be (1,5)
Open the Screenshot to see the problem
말 8.) A baker is ordering eggs for the week. How many cartons of 6 eggs would a baker need to have 225 eggs all together? Explain the reasoning for your answer. (4 pts.)
Answer:
38
Step-by-step explanation:
We know that each carton contains 6 eggs and we need a total of 225. To find this answer, divide 225 by 6, which is 37.5. We would have to round up one because you cannot buy half of a carton. So the answer is 38 cartons.
Find the indicated side of the triangle
Answer:
plz upload photo for your question