Answers
Answer:
45 mi/h
Step-by-step explanation:
Here, we can find the total distance divided by the total time. To find the total time, we can set up 2 equations:
[tex]d = vt[/tex] (which is the formula that connects velocity, time and displacement).
Here, we have to split the trip into 2 displacements because the car changes speed. So, we have 40 mi = 40 (mi/h) * t1. And t2 = 1 hour. For the second distance: 20 mi = 60 (mi/h) * t2. And t2 = 1/3 hrs.
since total time = t1+t2, we get the total time is 4/3 hours. Then, we get:
80 = [tex]v_{avg}[/tex]*(4/3) where [tex]v_{avg}[/tex] is the average velocity of the trip. Finally, we get [tex]v_{avg}[/tex] = 45 mi/h
Related Questions
PLZ HELP ME
In 2001, gold was priced at (0.5x + 300) dollars per ounce. Its price tripled in 2008 and then doubled in 2011. In 2016, its price dropped to 2 3 of the price in 2011.
• Write an expression for the price of gold per ounce in 2016.
• Explain how you found the expression.
Answers
Answer:
[tex]2x + 1200[/tex]
Step-by-step explanation:
[tex].5x + 300 \\ 3(.5x + 300) = 1.5x + 900\\ 2(1.5x + 900) = 3x + 1800 \\ \frac{2}{3} (3x + 1800) = 2x + 1200[/tex]
Each new line represents the change stated in the question.
So yeah can anyone help me out be a tone
Answers
Answer:
p = -4
Step-by-step explanation:
-3( 2+4p) + 7 = 49
Subtract 7 from each side
-3( 2+4p) + 7 -7= 49-7
-3( 2+4p) = 42
Divide by -3
-3( 2+4p) /-3 = 42/-3
( 2+4p) = -14
Subtract 2 from each side
2+4p-2 = -14-2
4p = -16
Divide by 4
4p/4 = -16/4
p = -4
what type of number is -15
Answers
Answer:
an integer
Step-by-step explanation:
integers are whole number that includes positive number, negative numbers, and zero
A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 160 lb and each box of books weighs 40 lb. The maximum capacity of the elevator is 790 lb. How many boxes of books can the delivery person bring up at one time?
The delivery person can bring up
nothing boxes of books.
Answers
Answer:
15
Step-by-step explanation
So, since the weight of the delivery person is 160 lbs... and the weight limit of the elevator is 790 lbs... Then you could subtract. If you subtract 790 lbs and 160 lbs you get 630 lbs.
So, this means that 630 lbs of boxes can go in the elevator
Since each box weighs 40 lbs, then you could divide the remaining pounds that could go on the elevator and the weight of each box. If you divide 630 lbs and 40 lbs, then you would get 15.75, but you can't carry a 75th of a box. So you in this circumstance, you would round down 15.75 to 15.
In conclusion, that's how I got my answer of 15
Does the equation y=-2x-3 represent a linear function
Answers
Answer:
For example, the linear equation 3y + 2x = 6 has an x intercept when y = 0, so 3(0) + 2x = 6. The x-intercept is (3, 0). Likewise the y-intercept occurs when x = 0. The y-intercept is (0, 2).
...
Graph the linear equation y + 3x = 5.
x values 5 – 3x
Step-by-step explanation:
hope this helps
If m3 + m1 =230, find m6
Answers
Answer:
m6 is 65 degrees
Step-by-step explanation:
Since angle 3 and angle 1 are congruent, they are the same degree. The problem said that the sum of their angles is 230, so to find the individual angles of each, divide by two to get 115. Angle 3 and angle 6 add up to 180 degrees since they are adjacent to each other (that's an important rule you need to know). If angle 3 is 115 and you need to find angle 6, subtract 180 from 115 and you will get 65.
h(x)=x−11 i don't get it
Answers
There were 5 boys for every 7 girls at Rayville High School last year. If there were 420 students at the school, how many were girls?
Answers
Answer:
240
Step-by-step explanation:
two in 1 more points
Answers
Answer:
Your photo wont show up
Step-by-step explanation:
Answer:
Hello
1. B. 2.35 * 10^11
2. A. 3 * 10^-2
Shannon's little brother is 7 weeks old. She is exactly
3 years and 3 days older than he is. How old is Shannon in days?
Assume that a year is 365 days.
Answers
Answer:
1147 days
Step-by-step explanation:
3x365= 1095
7x7=49
1095+49+3=1147
yo, i need some help :/
What is the domain of the function represented by the table?
A). all real numbers
B). x greater-than-or-equal-to 0
C). all integers greater than or equal to zero
D). {5, 10, 15, 20, 25}
Answers
Ms. Chang fills gum and trinket machines in front of grocery stores. In the trinket machine, there are two types of trinkets: lockets and stickers. If Ms. Chang puts 15 lockets and 25 stickers in an empty machine, what is the ratio of stickers to all the trinkets in the machine?
Answers
Answer:
3:5
Step-by-step explanation:
the initial ratio is
15:25
we can divide both numbers by five though
15/5=3
25/5=5
3:5
I hope this helped :)
Three years ago, Jolene bought $500 worth of stock in a software company. Since then the value of her purchase has been increasing at an average rate of 12 1 2 % per year. How much is the stock worth now? (Round each money calculation you make to the nearest cent.)
Answers
Answer:
The stock is worth $702.5.
Step-by-step explanation:
Giving the following information:
Present Value= $500
Number of periods (n)= 3 years
Growth rate (i)= 12%
To calculate the value of the stock today, we need to use the following formula:
FV= PV*(1+i)^n
FV= 500*(1.12^3)
FV= $702.5
The stock is worth $702.5.
PLS PLS PLS PLEASEEE HURRY UP
Answers
Answer:
Step-by-step explanation:
d
A box contains 20 calculators, and two of them are defective. Three calculators are randomly selected from this box and inspected to determine whether each of them is good or defective. Is this experiment a binomial experiment? Why or why not? Explain your REASONING and provide EVIDENCE
Answers
Answer:It is a binomial experiment
Step-by-step explanation:
A binomial experiment is an experiment that has a fixed number of independent trials with only have two possible outcomes. This outcome could either be a yes or No.
example is when a coin is toss one can set it as either I will get a head or a tail.
The experiment is binomial because it has a fixed number of trial which is 3 calculator that has been picked,
It has two outcome which is either good or bad calculator and the each trial is independent of each other.
You should not schedule _____ tasks for the same day.
yearly
daily
weekly
monthly
Answers
Answer:
B. Daily
Step-by-step explanation:
It makes more sense to put "daily" because of "the same day."
Daily means doing something everyday.
You should not schedule daily tasks for the same day.
Answer:
I just took the test.
It is weekly.
2. Lauren is thinking about spending all of her allowance money to buy a new bike. If she has $224
and she can only afford of the price of the bike, how much does the bike cost?
Answers
Answer:
$224
Step-by-step explanation:
The bike costs $224
From the expression of the problem, we know that she used all her money to buy the bike.
That means;
Allowance money = bike cost
Therefore, the cost of the bike is $224
a group of kids ate ¾ of a pizza if each kid ate a ⅛ piece of the whole pizza how many kids shared the pizza?
Answers
Answer:
6 kids ate pizza
Step-by-step explanation:
3/4 divided 1/8
Answer:
6 kids
Step-by-step explanation:
if each kid ate a 1/8 piece of the whole pizza => have [tex]\frac{3}{4}:\frac{1}{8}=6[/tex] (kids)
Please help I will give you brainliest. Look at the picture
Answers
Answer:
1. 24 2. 64 3. 9 4. 11 5. 7 2/5
Step-by-step explanation:
what is the answer
Answers
Answer:
not a function
Step-by-step explanation:
Since the x value of 2 goes to two different y values of 5 and 4, this cannot be a function
Determine whether y varies directly with x. If so, find the constant of variation k write the equation
Answers
Answer:
It varies directly
k = [tex]\frac{5}{3}[/tex]
Step-by-step explanation:
Table:
x y
7 11
8 13
9 15
10 17
Problem:, determine if y varies directly as x
Solution:
The equation to determine if they vary directly is;
y ∝ x
y = kx
From the table, y varies directly as x. As y increases, x also increases.
To find k, use any convenient value of y and x ;
y = 15 and x = 9;
15 = k x 9
k = [tex]\frac{15}{9}[/tex] = [tex]\frac{5}{3}[/tex]
NEED HELP PLZ! Will give brainliest, show all your work
Answers
he wouldn’t be able to use the full amount of cord so those are the most he could make
a square living room has an area of 225 square feet what is the perimeter of the room
Answers
Answer:
divide it by 4
Step-by-step explanation:
Answer:
450
Step-by-step explanation:
225 divided by 2 is 112.5x4= 450 so 450 is your answer
Which of the following cannot be true about a linear pair of angles?
Answers
A linear pair of angles cannot add up to anything other than 180 degrees.
They cannot be complementary because complementary means add up to 90 degrees.
What is the measure of Z?
Answers
what's the question ???
The sum of -3/8 and 2 2/3
Answers
Answer:
27/24 or (Decimal: 2.291667)
Step-by-step explanation:
Tehara has read 115 pages of a 305 page book she reads 10 pages each day how many days will it take to finish
Answers
30 POINTS AND I WILL GIVE BRAINLIEST JUST HELP ME PLZZ I NEED HELP WITH THIS !!
Answers
Answer:
$250
Step-by-step explanation:
If they are making 100 burritos, you multiply $1.50 and 100 to get $150, and then $1.00 and 100 to get $100. Add $150 and $100 together to get $250, that is how much it cost to make the burritos. If they sold all 100 burritos, they would gain a profit of $550.
Fill in the blanks by creating the line perpendicular to y=1/3x-3 that goes through (-1, -4) in slope intercept form.
Answers
Answer:
y = -3x - 7
Step-by-step explanation:
To find the slope of this perpendicular line, you'll have to keep in mind that a perpendicular line will have an opposite reciprocal of the slope of the line you are given. Here's what I mean:
Given Line: y = 1/3x - 3
Slope of Perpendicular Line: m = -3/1 = -3
Now, you'll have to find the y-intercept. But, to make sure your line passes through the given points, (-1, -4), you'll have to plug in the x and y values:
y = mx + b
-4 = (-3) (-1) + b
-4 = 3 + b
b = -7
Now just plug in your y-intercept and slope into the slope-intercept formula:
y = -3x - 7
if X to the second power is 20, what is the value of X????????? can someone please help meeeeeee
Answers
Answer:
[tex] {x}^{2} = \: 20 \\ \sqrt{x \: {}^{2} } = \sqrt{20} \\ x = 4.472135955[/tex]
Answer:
x = 2√5
Step-by-step explanation:
Hi there !
x² = 20
x² = 4×5
x² = 2²×5
x = √2²×5
x = 2√5
Good luck !