A train traveled at an average speed of 45 miles per hour for 40 minutes, and at an average speed of 60 miles per hour for 1 hour. What was the average speed of the train, in miles per hour, for the trip?
a.) 50, b.) 52.5, c.) 54, d.) 57,5, e.) 60

Answers

Answer 1

Answer:

c

Step-by-step explanation:


Related Questions

Which of these figures shows parallel lines? Help please

Answers

Answer:

B a parrelel line means there not inerscting

Step-by-step explanation:

A package of 6 pairs of insulated gloves cost $45.54. What is the unit price of the pairs of gloves?
ASAP PLEASE

Answers

Answer:

7.59 dollars is the unit price

Step-by-step explanation:

What is the x-intercept when y = 3x - 6 is graphed?​

Answers

Answer:

(2,0)

Step-by-step explanation:

Answer:

x intercept (2,0) y intercept is(0,-6)

Step-by-step explanation:

Identify the coefficient in 0.50(m)-0.20(g)+9.00

Answers

Answer:

-0.2 + 0.5m + 9

Step-by-step explanation: simplify

A water tank leaked 14 gallons of water over eight hours at a constant rate what was the change in the amount of water in gallons in a tank each hour

Answers

Answer: the answer would be 1.75 gallons/hour

Step-by-step explanation: if you take the 14 gallons divided by the eight hours, you get 1.75

Answer:

7/4 gallons per hour

Step-by-step explanation:

We have to divide the amount of water lost by the lapse of time. So we get

14/8= 7/4

answer fast!!!
A middle school took all of its 6th grade students on a field trip to see a play at a theater that has 3100 seats. The students filled 32% of the seats in the theater. How many 6th graders went on the trip?

Answers

Answer:

992

Step-by-step explanation:

Answer:

38%

Step-by-step explanation:

1178 / 3100 = 0.38

38%

Use the inequality below to find the value of r .
150 - 5 r ≥ 87.5

a. r ≥ 12.5
b. r ≤ 12.5
c. r ≥ -(12.5)
d. r ≤ -(12.5)

Answers

.....the answer is d

answer fast and quickly plsss​

Answers

Answer:

C. 65°, 115°

Step-by-step explanation:

3x - 5 + 2x - 15 = 180

5x - 20 = 180

5x = 180 + 20

5x = 200

x = 200/5

x = 40

5x - 20 = 3*40-5 = 120 - 5 = 115

2x - 15 = 2*40 - 15 = 80 - 15 = 65

Estimate the area of the inregular shape. Explain your method and show your work.
Please help 100 points and brainliest

Answers

Estimation : 27.5 square units

From the above coordinates: a = 7 length units, b = 4 length units and h = 5 length units. Therefore, approximate area = [(7+ 4)/2]*5 = 27.5 square units.

Hope it helps.

How many shelves did Andrew stock per hour?


A. 15


B. 24


C. 30


D. 12

Answers

Answer:

D

Step-by-step explanation:

look at one hour and you will see that when it is at one hour it is a little bit over 10 but not enough to be 15

plz mark me brainliest like the other person didnt even explain.

Find the solution of the second-order linear differential equation that satisfies the given initial conditions. y'' + 6y' + 9y = 0 y(0) = 0 y'(0) = 1

Answers

Answer:

The solution of this differential system is [tex]y(x) = x\cdot e^{3\cdot x}[/tex].

Step-by-step explanation:

This second-order differential equation is homogeneous and linear of the form:

[tex]y'' + p\cdot y' +q\cdot y = 0[/tex] (1)

Where:

[tex]p[/tex] - First-order constant coefficient, dimensionless.

[tex]q[/tex] - Zero-order constant coefficient, dimensionless.

Whose characteristic polynomial is:

[tex]\lambda^{2}+p\cdot \lambda + q = 0[/tex] (2)

Where [tex]\lambda[/tex] contains the roots associated with the solution of the differential equation.

If we know that [tex]p = 6[/tex] and [tex]q = 9[/tex], the roots of the characteristic equation are, respectively:

[tex]\lambda^{2}+6\cdot \lambda + 9 = 0[/tex]

[tex](\lambda +3)\cdot (\lambda + 3) = 0[/tex]

Which means that [tex]\lambda_{1} = \lambda_{2} = 3[/tex] and the solution of the differential equation is of the form:

[tex]y(x) = e^{3\cdot x}\cdot (c_{1}+c_{2}\cdot x)[/tex] (3)

Where [tex]c_{1}[/tex] and [tex]c_{2}[/tex] are integration constants.

The first derivative of the equation above is:

[tex]y'(x) = 3\cdot e^{3\cdot x}\cdot (c_{1}+c_{2}\cdot x)+c_{2}\cdot e^{3\cdot x}[/tex] (4)

Now, if we get that [tex]y(0) = 0[/tex] and [tex]y'(0) = 1[/tex], then the system of equations to the solved is:

[tex]c_{1} = 0[/tex] (3b)

[tex]c_{1}+c_{2} = 1[/tex] (4b)

The solution of this system is: [tex]c_{1} = 0[/tex], [tex]c_{2} = 1[/tex]. Therefore, the solution of this differential system is [tex]y(x) = x\cdot e^{3\cdot x}[/tex].

Kareem made a shirt using 1/2 yards of blue fabric and 1/8 yards of red fabric. How many more yards of blue fabric did Kareem use

Answers

We subtract 1/8 from 1/2 because the question asks how many more yards.many more means you subtract. 1/2-1/8=3/8 :)

Please help me with question number 2

Answers

Answer:

this is easy u need just to put values in the formula

Step-by-step explanation:

putting values in the formula

T =

[tex]2\pi \sqrt{l \div g} [/tex]

T =2×3.14√0.65÷9.8

T= 6.28√0.066

T=6.28×0.25

T=1.617s answer

Here is five number cards

Answers

Answer:

Thank you

Step-by-step explanation:

Which of these figures shows perpendicular lines?

Answers

Answer: I think a and b

Step-by-step explanation:

Find the mean and the median of the data set. 31,32,36,31,30,35,33,30.

Answers

Answer:

Mean = 32.25

median = 31.5

Answer:

Median = 31.5

Mean  = 32.25

Step-by-step explanation:

Number of data = 8

Ascending order:

    30 , 30 , 31 , 31 , 32 ,  33 , 35, 36

Median = Average of 4th and 5th term

             = (31 + 32) / 2

              = 63/2

              = 31.5

Mean = Sum of all the observations /number of observations

         = (31 + 32 + 36 +31 + 30 + 35 + 33 +30) / 8

         = 258/8  

         = 32.25

Which of the phrases translated the numerical expression 4 x (9-5)? Need answer to both

Answers

Answer:

a

Step-by-step explanation:

Number 5 is D. Subtraction uses key words like "difference" and it's multiplied by 4.

A monthly budget with expenses is shown.

MONTHLY BUDGET

for a family of three

in San Antonio, Texas

Rent

$870

Food

$550

PR Child care

$375

Transportation

$480

Utilities

$400

Insurance

$235

Savings

$400

Taxes

$290

Monthly total

Which equation can be used to determine y, the minimum amount of money a family must earn to meet the requirements of this budget for one year?

y = 3600 x 12

y = 3600 + 7

y = 3600 x 4

y = 360052

Answers

Answer:

[tex]y = 3600 * 12[/tex]

Step-by-step explanation:

Given: Breakdown of Monthly Budget

Required

Determine the equation that shows minimum earnings in a year

First, we need to get the sum of the given list of budgets:

[tex]Budget = 870 + 550 + 375 + 480 + 400+235+400 + 290[/tex]

[tex]Budget = 3600[/tex]

The are 12months in a a year; So, the yearly budget (y) is:

[tex]Yearly\ Budget = Monthly\ Budget * Duration[/tex]

[tex]Yearly\ Budget = 3600* 12[/tex]

i.e.

[tex]y = 3600 * 12[/tex]

Combine like terms: 4 - 3m - 1 + 2m

Answers

Answer:

-m+3

Step-by-step explanation:

4 - 3m - 1 + 2m

4-1-m

-m+3

how would i slove for x??

Answers

Answer:

x=12

Step-by-step explanation:

First you need to find the 3rd angle.

180-118=x

x=62

Once you have that 3rd angle, set all the inside angles equal to 180

4x-6+5x+16+62=180 ---> set to 180

9x+72=180 -->combine like terms

9x=108 --> subtract 72 from both sides

x=12 -->divide both sides by 9

Ava bought 1.7 lb of plums and 7.2 lb of peaches how many was her total. Plums:$0.23. per pound peaches:$1.22 per pound​

Answers

Answer:

0.391+8.42=8.811

8.811 in dollars is 10.42 United States Dollars

Step-by-step explanation:

Your answer is 10.42 c:

In the expression (44 - 4) ÷ 2 + 10, which operation should we start with?

Answers

Answer: the parenthesis: (44-4)

Step-by-step explanation: In order of operations parenthesis are always first. Then exponents, then multiplication and division, and then addition and subtraction. (PEMDAS)

An 8-quart jug of water costs $6.08. What is the price per cup?

Answers

Answer:

$0.19 cents

Step-by-step explanation:

First, find how many cups are in 8 quarts.

1 quart is 4 cups, so to find the number of cups, multiply 8 by 4:

8(4)

= 32 cups

Then, to find the price per cup, divide the cost by the number of cups:

6.08/32

= 0.19

So, the price per cup is $0.19 cents

Find the slope of the line passing through the points (-4,7) and (2,-8)

Answers

Answer:

[tex]m=\frac{-5}{2}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Point (-4, 7)

Point (2, -8)

Step 2: Find slope m

Substitute:                    [tex]m=\frac{-8-7}{2+4}[/tex]Subtract/Add:               [tex]m=\frac{-15}{6}[/tex]Simplify:                        [tex]m=\frac{-5}{2}[/tex]

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random.
Find the probability that the ticket drawn has a number which is a multiple of 5:

Answers

Answer:

1/5

Step-by-step explanation:

4/20 is how many multiples of 5 are in the total out of 20. 4/20 simplified is 1/5

On Monday, Erin ran a mile in 7.5 minutes. On Tuesday, she ran a mile in 6.9 minutes. What was the average time for a mile over those two days, expressed as a fraction?

Answers

Answer: 14.4/2

Step-by-step explanation: to find the average time, we add both numbers then divide by how many numbers we have, which is two. So 7.5 + 6.9 = 14.4. we then divide by 2, so 14.4/2.

F(x)=4x+5whsts the value of. F(-3). Is




Answers

Figure out the value

Answer:

F(-3) = -7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

F(x) = 4x + 5

F(-3) is x = -3

Step 2: Evaluate

Substitute:                    F(-3) = 4(-3) + 5Multiply:                        F(-3) = -12 + 5Add:                              F(-3) = -7

Solve the following expression: (9 x 10) - (30 + 30). Show all steps taken.

Answers

Answer:

First multiply each brackets

90-60

30

Step-by-step explanation:

Answer:

9 x 3= 27 and 30 + 30=  60.. so 60- 27= 33, but if you want to do 27- 30.. it would be -33.

Step-by-step explanation:

Hope that answers your question!

To demonstrate probabilities, a mathematics teacher had students draw cards from a bag which contained 26 red cards and
26 black cards. During class, the bag was dropped, and 5 red cards and 1 black card were lost.
Tell whether the loss of cards changes the probability of drawing a black card from the bag.
If so, was the probability increased or decreased? Support your answer by calculating the probability for each situation.

Answers

Answer:

decreased

Step-by-step explanation:

what is h(5)=-5²+3×5

Answers

Answer:

the answer will be -10.

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