9514 1404 393
Answer:
405 mph; 325 mph
Step-by-step explanation:
The total of their speeds is ...
2920 mi/(4 h) = 730 mi/h
If s represents the speed of the slower plane, then we have ...
s + (s+80) = 730
2s = 650 . . . . . . . subtract 80
s = 325 . . . . . . . divide by 2
s+80 = 405 . . . find the faster speed
The speeds of the planes are 405 mi/h and 325 mi/h.
The product of two rational numbers
Answer:
The product of two rational numbers is rational.
So, multiplying two rationals is the same as multiplying two such fractions, which will result in another fraction of this same form since integers are closed under multiplication. Thus, multiplying two rational numbers produces another rational number.
Ellen jogs 2.45 miles each day. In the month
of July she jogged 26 days. How far did Ellen
jog in the month of July?
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 63.7 miles
Explanation:
2.45 x 26
I hope this helped!
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- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer:
Ellen jogged for 26 days in month of July is total of 63.7 miles
Step-by-step explanation:
Braniliest please
Find the acceleration. I don’t understand this, please help
Answer:
At t = 9, Whitney's acceleration will be -0.2 miles per minute.
Step-by-step explanation:
Remember that the acceleration is the derivative of velocity.
Since we want to find Whitney's acceleration at t = 9 and we are given the velocity function, we can simply find the derivative of the point at t = 9. In other words, a(9) = v'(9).
For the interval (7, 11), we simply have a line. So Whitney's acceleration at t = 9 will be equivalent to the slope of that line.
We have the two points (7, 0.8) and (11, 0). So, the slope between them is:
[tex]\displaystyle m=\frac{0-0.8}{11-7}=\frac{-0.8}{4}=-\frac{1}{5}[/tex]
So, a(t) = v'(t) = -0.2 ∀t ∈ {t | 7 < t < 11}. Then at t = 9, Whitney's acceleration will be -0.2 miles per minute.
For which set of data is the mode the BEST measure of central tendency?
A) 3, 11, 20, 14, 20
B) 10, 13, 10, 25, 16
C) 12, 10, 13, 25, 12
D) 14, 10, 12, 14, 3
Answer: C
Step-by-step explanation:
i took the quiz
Lily used lime green, pink, blue, orange and yellow to make the bracelet. What fraction of the bracelet was the pink, blue and orange?
vcv-hqxf-qod meet code LOL
Answer:
yoo
Step-by-step explanation:
Answer:
gracias por los puntos crack
The double box plot shows the cost of the top-selling lunch menu items at two local restaurants. Determine which inference is true about the two populations.
Answer:
The spread of the data for The Red Brick Grill is greater than that for Sophie's Cafe.
Step-by-step explanation:
In the picture
Fin i the slope of a line joining
the
points (4,5)and(7,8)
Answer: The slope of a line joining the points (4,5) and (7,8) is 3/3, or 1.
Step-by-step explanation:
Please see the answer above, hope this helped. :)
a bank receives a deposit for $30000. If the bank has a 10 percent reserve requirement approximately how much money could be initial deposit eventually add to the econmy
At the local art exhibit, childrens tickets cost $3 each and adult tickets cost $4 each. On a certain day, the exhibit sold 56 tickets and earned $203 in revenue. How many childrens tickets and how many adult tickets were sold?
Answer:
Children=21 Adult=35
Step-by-step explanation:
[using c for children tickets and a for adult tickets]
56=c+a and 203=3c+4a [starting system of equations]
a=56-c ---> 203=3c+4(56-c) [plugging the first eq. into the second]
203=3c+224-4c [simplify]
-21=-c [simplify 2.0]
c=21 [simplify 3.0]
56=21+a [plugging back into org. eq.]
so a=35
A. A
B. B
C. C
D. D
help plz im timed
Answer:
A) (0,0) B)(1,1) C) (0,1) D) (1,0)
Step-by-step explanation:
a box of 8 marbles has 4 red,2 green and 2 blue marbles. If you select one marble, what is the probability that it is a red or blue marble
your answer should be 0.80
D
I
Alex jogged round a 400-m track. He took a total of 16 min to jog 3 rounds of
the same track.
(a)
(b)
Find the total distance that Alex had jogged.
Find Alex's average speed in m/min.
19
Answer: [tex]1200 m[/tex]
[tex]75\ m/min[/tex]
Step-by-step explanation:
Given
Alex Jogged 3 rounds of 400 m track
It took 16 min to Jog 3 rounds
(a) Total distance Alex had Jogged
[tex]\Rightarrow 3\times 400=1200\ m[/tex]
(b) Average speed is the total distance by the total time
[tex]\Rightarrow \dfrac{1200}{16}=75\ m/min[/tex]
Two variables are said to interact when ____. a. the two variables are differentially affected by a third variable b. both variables produce a change in the subjects' scores c. both variables are equally influenced by a third factor d. the effect of one independent variable depends on the levels of the second variable
Answer:
a.) the effect of one independent variable depends on the levels of the second variable
Step-by-step explanation:
In regression, an interaction effect comes to play whenever the effect that an independent variable has on a dependent variable changes, as regards to value(s) of other independent variables( one or more variables). The variables that give interaction effect as a result of interaction with each other is reffered to as "interacting variables" For instance, in a research whereby how "Male gender versus female gender" and their " dieting B and dieting D" influence their " weight loss" There would be interaction effect in a situation where by a " female gender" that operate on " diet B" shed more weight compare with " male gender" that operate on " diet B". It should be noted that two variables are said to interact when the effect of one independent variable depends on the levels of the second variable
I have been stuck on the problem for so long. please help me:
What is the value of y in the solution set of the system of linear equations shown below?
y= -x + 12
4x - 2y = 36
A- 10
B- 8
C- 6
D- 2
Answer:
D-2
Step-by-step explanation:
You can use elimination to get the value of y. Move numbers to one side and x and ys to the other side. To use elimination, multiply the first equation with 2. You will get 2x+2y=24. add it with the equation below. y will be eliminated and you will get the value of x. X=10. Plug in x and get the y value. Y=2
Which of these is a finite population?
Select one:
a. The number of salads served at McDonalds.
b. The number of grains of sand in a 10 lb bag of sandbox sand.
c. The number of light bulbs produced one day in a factory
d. The number of seeds inside the tomatoes produced in a nursery.
please answer thanks
Answer:
10
Step-by-step explanation:
it's kinda hard to explain
Given the lease terms below, what is the total price of this car if you buy it
after leasing, and you do not get the security deposit back?
Terms:
• Length of lease: 24 months
• MSRP of the car: $21,400
• Purchase value of the car after lease: $17,100
• Down payment: $1500
• Monthly payment: $279
• Security deposit: $350
Acquisition fee: $700
Answer:
I believe the answer is 12,342 try it out and let me know:)
Step-by-step explanation:
Can someone plz help ASAP
Answer:
55
Step-by-step explanation:
5×(2+5+2)=35
4×5=20
35+20=55
Martin can run a lap in 6 minutes. If he has an hour to run, how many laps can
complete? *
aur answer
Help pls
Answer: 10 laps
Step-by-step explanation: 60(minutes) divided by 6(minutes of orginal lap)
Find the area of a circle with radius equal to 7π
Answer:
49π³
Step-by-step explanation:
area = πr²
area = π(7π)² = 49π³
Answer:
1519.3 sq units
Step-by-step explanation:
A = πr²
A = π(7π)²
A = 49π³
Write an expression showing a÷(b+2) as a fraction?
First, rewrite
7/9 and 16/21
so that they have a common denominator.
Given sec A = 5/3 and that angle A is in Quadrant I, find the exact value of csc A in simplest radical form using a rational denominator.
9514 1404 393
Answer:
5/4
Step-by-step explanation:
The relationship between the sec and csc functions is ...
csc(A) = sec(A)/√(sec²(A) -1)
For the given value of sec(A), this is ...
csc(A) = (5/3)/√((5/3)² -1) = (5/3)/√(16/9) = (5/3)/(4/3)
csc(A) = 5/4
__
Some calculators can tell you the answer directly.
Find the total area of the polygon shape shown below. All measurements are given in inches. Enter only the number. The total area is blank square inches.
The total area is 45 square inches.
Area of Compound ShapesThis question requires your knowledge about the area of compound shapes. For solving this, you should:
Identify the basic shapes;Calculate your individual areas; Sum each area found. STEP 1 - Identify the basic shapes.The figure is composed of:
two squares whose sides are equal to 3 in. 1 rectangle whose sides are: 9 in and 3 inTherefore, you should sum the area of these geometric figures for determining the given area.
STEP 2 - Find the area of the squares.Area of each square = a², where a=the length of the side.
Like, the length of the side is equal to 3 in, the area will be:
A_square= 3²=9 in².
You have two squares in the figure. Then, the total area for the squares is 9 + 9 =18 in²
STEP 3 - Find the area of the rectangle.
Area of the rectangle = bh . The figure shows that: the base = 9 in and the 3=8 in
Thus, A_rectangle=bh= 9*3=27in²
STEP 4 - Find an expression for the total area of the figure.
A_total= A_squares+ A_rectangle
A_total= 18+27=45 in²
A_total= 45in²
Learn more about the area of compound shapes here:
brainly.com/question/15884960
#SPJ1
Find the measure of angle A
(look at pic pls help)
A- 120
B- 300
C- 60
D- 90
Answer: 300
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
Somebody please help me!!!
Select the values that make the inequality -g > -6 true.
Then write an equalivalent inequality, in terms of g.
(Numbers written in order from least to greatest going across.)
Answer:
https://brainly.com/question/22830500
Step-by-step explanation:
pleaseee help asapppppp
The set of values that make the inequality -g > -6 true are; -5.9, -5, -1, 0, 1, 5, 5.9.
According to the question;
The inequality given is -g > -6The equivalent inequality can be gotten as follows;
-g > -6By dividing both sides by -1, we get;
g < 6.Therefore, the set of values that satisfy the inequality are as listed above.
Read more:
https://brainly.com/question/18726103
A sports marketing company is interested in how many hours teenagers in a town spend watching sports. They randomly select 40 teenagers in this town and ask how many hours per week they spend watching sports. The mean amount is 6.25 hours with a standard deviation of 4.33 hours. Which of the following is the 90% confidence interval for the true mean amount of time teenagers from this town watch sports?
Find the t-table here.
(4.396, 8.104)
(4.865, 7.635)
(5.097, 7.404)
(5.245, 7.256)
Answer:
(5.097, 7.404)
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 40 - 1 = 39
90% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 39 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.9}{2} = 0.95[/tex]. So we have T = 1.6849
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 1.6849\frac{4.33}{\sqrt{40}} = 1.154[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 6.25 - 1.154 = 5.096 hours
The upper end of the interval is the sample mean added to M. So it is 6.25 + 1.154 = 7.404 hours.
The answer is (5.097, 7.404)
A TV has a listed price of $751.98 before tax. If the sales tax rate is 8.75%, find the total cost of the TV with sales tax included.
Round your answer to the nearest cent, as necessary.
Answer:
$817.78
Step-by-step explanation:
To find the tax you must do the equation:
751.98 x 0.0875
(Btw, 0.0875 is decimal form of 8.75%. Always turn the percentage into a decimal before finding the tax or sale amount)
751.98 x 0.0875 = 65.80.
Now, add the sale tax amount and the original price:
751.98 + 65.80 = 817.78
Therefore, the answer is 817.78.