Answers
Answer:
c
Step-by-step explanation:
Related Questions
An Eastbound train (E) traveling 95 mph and a Westbound train (W) traveling 110 mph leave the same train station at different times. After 4 hours, they are 4 00 miles apart. Which system of linear equations can be used to determine the time that each of the trains has been traveling?
Answers
Answer:
The system of linear equations that can be used to determine the time that each of the trains has been traveling is:
E + W = 4 ....... Equation 1
95 E + 110W = 400 ......Equation 2
Hence,
An Eastbound train has been travelling for = (E) = 2.67 hours
A Westbound train has been travelling for = (W) = 1.33 hours
Step-by-step explanation:
An Eastbound train (E) traveling 95 mph and a Westbound train (W) traveling 110 mph leave the same train station at different times. After 4 hours, they are 4 00 miles apart. Which system of linear equations can be used to determine the time that each of the trains has been traveling?
Speed = Distance/Time
Distance = Speed × Time
Let the time
An Eastbound train = (E)
A Westbound train = (W)
E + W = 4 hours ....... Equation 1
95mph × E + 110mph × W = 400 miles
95 E + 110W = 400 miles ......Equation 2
The system of linear equations that can be used to determine the time that each of the trains has been traveling is:
E + W = 4 ....... Equation 1
95 E + 110W = 400 ......Equation 2
E = 4 - W
We substitute 4 - W for E in Equation 2
95 (4 - W) + 110W = 400
380 - 95W + 110W = 400
Collect like terms
95W - 110W = 400 - 380
15W = 20
W = 20/15
W = 1.3333333333 hours
≈ 1.33 hours
E = 4 - W
E = 4 - 1.33 hours
E = 2.67 hours
Therefore,
An Eastbound train has been travelling for = (E) = 2.67 hours
A Westbound train has been travelling for = (W) = 1.33 hours
-6+(-2)+14
i want the explanation
Answers
Answer:
6
Step-by-step explanation:
-6+-2 is -8. if you add 14 its 6
A car drives 120 miles in 2 hours Find the speed
Answers
Answer:
60 miles per hour
Step-by-step explanation:
Divide 120 miles by 2 hours and you get 60 miles per hour.
Answer:
60 mph
Step-by-step explanation:
120/2=60
If the car drives 120 miles in 2 hours, divide 120 by 2 to get the unit rate
3/4 minus 7/16. In factions
Answers
Answer:
What is the question sir
Step-by-step explanation:
In 2010, the population of some countries was 1,200,000 people. From 2010 to 2050, the population is expected to increase by 50%. Find the expected population of the country in 2050.
The population of the country in 2050 is expected to be ______people. (Simplify your answer.)
Answers
Answer:
7,200,000
Step-by-step explanation:
I need someone to give me the stupidest answer ever and Ill give all my points and brainliest
Answers
Answer:
otay wait why am i here?
Marty worked 19.5 hours last week. He earns $8.50 per hour. What were Marty’s earnings last week?
Answers
Answer:
Step-by-step explanation:
Marty's earnings = 8.50 x 19.5 = 165.75
Simplify 7.6 - 23
help me pleaseeee
Answers
Answer:
-15.4
Step-by-step explanation:
Simply just means "solve" or "make the equation shorter"
Answer:-15.4
Step-by-step explanation:
six cats catch six mice in six minutes. how many cats are needed to catch 60 mice in 60 minutes
Answers
Answer:
10 cats
Step-by-step explanation:
If there are 10 cats, they all will catch 6 mice each, which means 60 mice in total. If they catch 6 mice in 6 seconds, that means they will catch 60 mice in 60 seconds. You need 10 cats to get this task done
The price of a notebook has Risen to $9.61today. Yesterday’s price was $9.72 Find the percentage increase. Round your answer to the nearest tenth of a percent.
Answers
Answer: 1.1%
Step-by-step explanation:
$9.72 - $9.61 = .11
.11/9.60 = 0.01145833 x 100 = 1.1458333 round to the nearest tenth = 1.1%
Pauline Romer has taken a $100000 mortgage loan on her house at an interest rate of 3 percent per year. If the mortgage calls for 20 equal annual payments, what is the amount of each payment?
Answers
Answer:
5000
Step-by-step explanation:
Using the mortgage interest principle, the amount of equal payment to be made ls $8000
Mortgage payment = $100000
Interest rate = 3%
The total amount to repayed can be calculated thus :
Mortgage payment × interest rate × timeNumber of annual payments = 20
Total repayment = 100000(1 + (0.03 × 20))
Total repayment = 100000 + 60000 = $160,000
Amount of each payment = $160000 / 20 = $8000
Therefore, the amount to be repayed annually is $8000
Learn more : https://brainly.com/question/18904995
How to tell if your table is linear or exponential?
Answers
Answer: If the first difference is the same value, the model will be linear. If the second difference is the same value, the model will be quadratic. If the number of times the difference has been taken before finding repeated values exceeds five, the model may be exponential or some other special equation.
Step-by-step explanation: You can tell if a table is linear by looking at how X and Y change. If, as X increases by 1, Y increases by a constant rate, then a table is linear. You can find the constant rate by finding the first difference. This table is linear.
The vertices of a triangle are as follows: (6, -3), (1, 5), and (8, -4) If you dilate the triangle by a scale factor of 3, what are the vertices of the new triangle?
Answers
What is the volume of the prism below?
A. 150 cubic units
B. 300 cubic units
C. 55 cubic units
D. 1,500 cubic units
Answers
Answer:
the answer is B.300.Don't forget to mark brainliest
Answer:
a
Step-by-step explanation:
if Ad = 2x + 2 and cd= x +11, what is the value of x
Answers
Answer: the answer is 9
Step-by-step explanation:
Suppose an elevator starts at street level (0), goes down 4 floors to the parking deck
and then goes up 9 floors to the conference center. The conference center is on what Suppose an elevator starts at street level (0), goes down 4 floors to the parking deck
and then goes up 9 floors to the conference center. The conference center is on what floor?
Answers
Answer:
5
Step-by-step explanation:
0-4= -4
-4+9=5
Answer: The 5th Floor
Step-by-step explanation:
0 - 4 = - 4
- 4 + 9 = 5
Please help I have been stuck for 2 HOURS!
TY
Answers
the answer is
slope: - 1/6
y interpret (0,-6)
4 (-x+4) =12 solve for x
Thank you! Any help Is appreciated!
Answers
Answer:
X=4
Step-by-step explanation:
distribute the 4 to the ones in the parenthesis
-4x+28=12
move the 28 over and change the sign
-4x=-16
divide by -4
x=4
If m ACD=100 degree,then m ECB=[?]
Answers
Answer:
100
Step-by-step explanation:
They are the same.
Hope I helped!
Answer:
100°
Step-by-step explanation:
ACD=ECB=100°
[Vertical opposite angles are equal]
How far will 25 N of force stretch a spring with a spring with a spring constant of 125 N/m?
Answers
Answer:
-0.656168ft
Step-by-step explanation:
If Spring force constant (k) is 125 N/m
And the force is (F) 25 N ,
then the spring displacement (Δx) -0.656168
Equation used:
Knowing Hooke's law, we can write it down it the form of a formula:
F = -kΔx
F is the spring force (in N);
k is the spring constant (in N/m); and
Δx is the displacement (positive for elongation and negative for compression, in m).
2 1/7 divided by 1 2/5
Answers
68 lb 13oz - 30 lb 15 oz=
Answers
Answer:
37.875 lb (37 lb 14 oz)
Step-by-step explanation:
(There are 16 oz in 1 lb)
68 lb = (68 x 16 =) 1,088 oz
1,088 oz + 13 oz = 1,101 oz
30 lb = (30 x 16 =) 480 oz
480 oz + 15 oz = 495 oz
1,101 oz - 495 oz = 606 oz = (606 oz ÷ 16 =) 37.875 lb
Final answer:
37.875 lb (37 lb 14 oz)
Hopefully this helps! Sorry if wrong. You are loved and you are beautiful/handsome!
-Bee
List the possible rational roots and actual rational roots for the equation ,' - 5x?+ 9x2 - 7x + 2 = 0. a. +1, +2; -1, -2 +1, +3; 1, 2, 3 b. +1, +2; 1, 2 d. +1, +2; 1,6 Please select the best answer from the choices provided Ο Α OB C D
Answers
Answer:
C
Step-by-step explanation:
Elliot collects miniature toy cars. He wants to fill 4 display cases.each display case holds 15 cars. He has 28 cars now, and he is able to buy 3 more every month with the money he saves from his allowance. How many more months will it be until elliot has enough cars to fill all 4 display cases?
Answers
Answer:
Elliot has to wait 11 months before he has enough cars
Step-by-step explanation:
Elliot has 4 display cases with each case being able to hold 15 cars. Thus we know
total # of cars Elliot can place in his display case = 4 * 15 = 60 cars
From this, we can figure out how many more cars Elliot needs by subtracting the amount of cars he already has
# of cars Elliot needs = 60 - 28 = 32 cars
Now to find the number of months Elliot needs, we divide by how many he can buy each month
# of months Elliot needs to save up for = 32 / 3 = 10 2/3
Assuming Elliot does not get his allowance until the end of the month, we will have to round the number of months up to the nearest integer, 11
is f(x)=7-2x a polynomial function
Answers
Answer:
Yes
Step-by-step explanation:
'
Yes, this F(x) is a polynomial function involving the first and null integer powers of x: x^0 and x^1.
Raina, Alan, and Kareem have a total of $85 in their wallets. Kareem has $9 less than Raina. Alan has 2 times what Kareem has. How
much do they have in their wallets?
Amount in Raina's wallet
$
Amount in Alan's wallet:
$
Amount in Kareem's wallet:
$
Answers
Answer:
17, 51, 24.
Step-by-step explanation:
i cant type it rn but i will put it in comments later :D hope this helped!
Write in slope intercept form an equation of the line that passes through the given points. (0,4) (4,8) and (-2,3) (-4,4)
Answers
Answer:
y-8=1(x-4)
Step-by-step explanation:
I used the equations y-y/x-x and y-__y__=__m__(x-__x__)
At Chester’s Bakery, a box of 12 donuts sells for $8.50. What is the unit price of the donuts in the box, rounded to the nearest cent?
$0.12 per donut
$0.71 per donut
$1.02 per donut
$1.41 per donut
Answers
Answer: $0.71
Step-by-step explanation:
9 × [(21 − 4) − 9 what is the answer when you find out pls let me know!!!
Answers
Answer:
72 is the answer
21-4 IS 17, AND 17 - 9 IS 8, THEN 9X8 IS 72.
Plzzzz help The variables p, q, and r are rational numbers with the following properties:
p>0, q<0, and r < 0.
Based upon the given information, select the option below where both expressions have a negative value.
A Op.p and s.r
B O qr and pa
C O qr and 7pr
D O pq and 7pr
Answers
Answer:
qr and pq
Step-by-step explanation: