Mathematics College

## Answers

**Answer 1**

**Answer:**

The answer is "**2.2 h**"

**Step-by-step explanation:**

**Speed of Train B:**

[tex]= \frac{3}{2} \times 70 \ mph \\\\= 105 \ mph[/tex]

**Train B is then moving on:**

[tex]= \frac{200 \ miles}{ 105 \ mph} \\\\= 1.905 \ h\\[/tex]

**Then it takes Train A to the left:**

[tex]\to 1.905\ h + 20 \ min \\\\= 1.905 \ h +0.333 \ h \\\\= 2.238 \ h[/tex]

**To get train B to the reference point of train A = 2.2 h **

## Related Questions

A mountain bike costs $675. If the sales tax is 8%, find the total cost of the bike. Round to the nearest cent, if

necessary

### Answers

**Answer:**

$729.00

**Step-by-step explanation:**

The tax is ...

0.08 × $675 = $54.00

So, the total cost of the bike is ...

$675 +54 = **$729.00**

Can someone help me answer these

### Answers

**Answer:**

question 7: irrational.

Question 8: rational.

**Step-by-step explanation:**

7 would be irrational bc it repeats and 8 would be rational bc it doesn’t repeat

7х + Зу = 15

Slope intercept form steps

### Answers

**Answer:**

y = -7/3x + 5

**Step-by-step explanation:**

7x + 3y = 15

- subtract 7x from both sides

3y = -7x + 15

- divide both sides by 3

y = -7/3x + 5

Set up a system of linear equations to represent the scenario. Solve the system by using Gaussian elimination or Gauss-Jordan elimination. Assume the interest rates are annual. Latoya borrowed $19,500 to buy a truck for her business. She borrowed from her parents who charge her 5% simple interest. She borrowed from a credit union that charges 4% simple interest, and she borrowed from a bank that charges 3% simple interest. She borrowed four times as much from her parents as from the bank, and the amount of interest she paid at the end of 1 yr was $870. How much did she borrow from each source

### Answers

**Answer:**

*p* = $12,000

*c* = $4,500

*b* = $3,000

**Step-by-step explanation:**

Denote the variables as follows:

*p* = amount borrowed from parents

*c* = amount borrowed from the credit union

*b* = amount borrowed from the bank

The equations that can be formed using the given information are as follows:

*p* + *c* + *b* = 19500... (i)

*p* = 4*b*... (ii)

The formula to compute simple interest is:

SI = P × (R/100) × T

So, the equation for the total interest paid at the end of 1 year is:

0.05*p* + 0.04*c* + 0.03*b* = 870

5*p* + 4*c* + 3*b* = 87000... (iii)

Substitute (ii) in (i) and (iii) and simplify as follows:

4*b* + *c* + *b* = 19500

⇒ *c* + 5*b* = 19500... (iv)

5(4*b*) + 4*c* + 3*b* = 87000

⇒ 4*c* + 23*b* = 87000... (v)

Subtract (iv) from (v):

4*c* + 23*b* = 87000

(-)*c* + (-)5*b* = (-)19500 ] × 4

⇒

4*c* + 23*b* = 87000

-4*c *- 20*b* = -78000

⇒

3*b* = 9000

*b*** = 3000**

Compute the value of *p* as follows:

*p* = 4*b* = 4 × 3000 = 12000

**p**** = 12000**

Compute the value of *c* as follows:

*p* + *c* + *b* = 19500

12000 + *c* + 3000 = 19500

*c* + 15000 = 19500

*c*** = 4500**

Thus, the amount borrowed from each source is:

*p* = $12,000

*c* = $4,500

*b* = $3,000

Domain and range of a graph please helppppp

### Answers

**Answer:**

Domain : (-∞,∞)

Range : (-∞,∞)

**Step-by-step explanation:**

Domain is how many x-values the graph touches and Range is how many y-values the graph touches. And this graph has no point on which it stops nor any asymptotes, so both domain and range are all real numbers.

**Answer:**

if FB gxjxjdjdjhgdjjdidjqjdjjdid

Finish the sentence:

Renee is a sales associate at a store. She earns $80 a week plus a 15% commission on her sales. Last week, she sold $200 worth of items. What is the total amount Renee earned for the week? How much did she earn from commission?

Renee earned a total of $ for the week. The amount she earned from commission was $ .

### Answers

**Answer:**

$110 for the week

$30 commission

**Step-by-step explanation:**

more FILL IN THE BLANKS FOR SCHOOL.... please help soon as possible

### Answers

**Answer:**

2

**Step-by-step explanation:**

-42/14 = 3, so you need to cancel out the 1/2 being multiplied on the bottom part of the fraction

12=x÷8

I need help please

### Answers

**Answer:**

x=96

**Step-by-step explanation:**

X=96

I believe that’s the answer

PLEASE I'M NOT SURE WHAT TO DO: Write the following equation in point-slope form: 16. The cost to rent a video game at a rental store can be modeled by a linear function. Renting a game for 1 night costs $1.50 and renting a game for 2 nights cost $2.7%. Write a linear equation that models the total cost of renting a game, y, as a function of the number of nights rented, x. Hint: find your ordered pairs then slope, point slope form is y-yı = m(x - x1)

### Answers

Answer:2.7 - 1.50 = 1.2(2-1)

**Answer:**

129.6 is the answer

**Step-by-step explanation:**

How do you round each number to the place value of the underlined digit?

### Answers

**Answer:**

**9. 80, 547.65**

**10. 135,702.0**

Fill in the blanks below.

Find the slope of the line passing through the points (7,-5) and (7, -1).

slope:

Find the slope of the line passing through the points (-7, 6) and (-7,-6).

slope:

### Answers

**Answer:**

1. infinity

2. infinity

Write and solve an equation to find the value of x and the missing angle measures.

### Answers

Equation: (44x+1) + (14x+5) = 180

X = 3

A swuare has an area of 9 cm^2.

Whats the side length

### Answers

**Answer:**

3

**Step-by-step explanation:**

Area of a square= Length*Height

9=3*3

**Answer:**

3

**Step-by-step explanation:**

solve this: F(x) = 1/x+6

### Answers

**Answer:**

**Step-by-step explanation:(F)=1/F+6**

**We move all terms to the left:**

**(F)-(1/F+6)=0**

**Domain of the equation: F+6)!=0**

**F∈R**

**We get rid of parentheses**

**F-1/F-6=0**

**We multiply all the terms by the denominator**

**F*F-6*F-1=0**

**We add all the numbers together, and all the variables**

**-6F+F*F-1=0**

**Wy multiply elements**

**F^2-6F-1=0**

**a = 1; b = -6; c = -1;**

**Δ = b2-4ac**

**Δ = -62-4·1·(-1)**

**Δ = 40**

**The delta value is higher than zero, so the equation has two solutions**

**We use following formulas to calculate our solutions:**

**F1=−b−Δ√2aF2=−b+Δ√2a**

**The end solution:**

**Δ‾‾√=40‾‾‾√=4∗10‾‾‾‾‾‾√=4√∗10‾‾‾√=210‾‾‾√**

**F1=−b−Δ√2a=−(−6)−210√2∗1=6−210√2**

**F2=−b+Δ√2a=−(−6)+210√2∗1=6+210√2**

simplify 1/2 +1/4 - 1/6

### Answers

**Answer:**

look for the LCM of all the denominators, devide the denominators by the LCM and add the numerators( don't forget the signs ), then add and subtract your answers ( by this time the LCM becomes the denominator and the answer from th subtraction and addition of the numerators becomes the present numerator ), then reduce to lowest term the answer gotten

Please help me with this math ;(

### Answers

**Answer:**

X=0

**Step-by-step explanation:**

f(X)=0

3^x-1=0

3^x=1

3^x=3^0

X=0

h(t) = (t + 3) + 5

What is the average rate of change of h over the interval -5

### Answers

3 would be the answer i’m pretty sure

if the standard deviation of the values in a sample is 14 what is the variance of the data values

### Answers

**Answer:**

196

**Step-by-step explanation:**

THATSSS THE ANSWERRRRR!!

Answer please quickly

### Answers

**Answer:**

x-intercept = 4

y-intercept = 2

**Step-by-step explanation:**

**Answer:**

y-intercept is 2

x-intercept is 4

slope -2/4

thats all i know sorry

1/3j =9

A.)27

B.)9

C.)3

D.)4

### Answers

The answer is B.)9 the answer is B.)9

Help help help!!!!!!!!!!!!!!!!!!!!!!!!

### Answers

**Answer:**

I think the starting point is in quadrant Q, and the finishing point is in quadrant S. I don't really understand part B, sorry...

Which statement about the following system of inequalities is true?

There is no solution because the shading does not overlap.

There is no solution because the graphs do not intersect.

The solution contains points in four quadrants of the coordinate plane.

The solution is equal to the solution to

### Answers

**Answer:**

the following system of inequalities is true

**Step-by-step explanation:**

there is no solution because the graph do not intersect

There is **no solution** because the graph does **not intersect.**

The following system of **inequalities** is true.

We have given that,

There is **no solution **because the shading does **not overlap.**

There is no **solution because** the graphs do** not intersect.**

The solution **contains points **in four quadrants of the **coordinate plane.**

The solution is equal to the **solution to**

**What is inequality?**

A statement of an order **relationship—greater** than,** greater than** or equal to,** less than,** or less than or **equal to**—between** two numbers** or **algebraic expressions.**

There is **no solution** because the graph does **not intersect.**

To learn more about** inequality** visit:

https://brainly.com/question/24372553

#SPJ5

PLEASE IN DIRE NEED OF HELP I WILL GIVE BRAINLIEST

The perimeter of rectangle is 48 cm. Find the sides of the rectangle if one of the sides is 12 cm longer than the other.

### Answers

**Answer:**

L=W+12

2L+2W=48

2(W+12)+2W=48

2W+24+2W=48

4W=48-24

4W=24

W=24/4

W=6 ANS. FOR THE WIDTH.

L=6+12=18 ANS. FOR THE LENGTH.

PROOF:

2*18+2*6=48

36+12=48

48=48

Answer:

6 cm by 18 cm

Step-by-step explanation:

use x and x+12

2(x) + 2(x+12)=48

2x +2x+24=48

4x+24=48

4x=24

x=6 and (6+12)=18

:)

74.823 expanded form

### Answers

**Answer:**

Standard Form:

74.823

Expanded forms can be written like a sentence or stacked for readability as they are here.

Expanded Notation Form:

70

+

4

+

0.8

+

0.02

+

0.003

Expanded Factors Form:

7 ×

10

+

4 ×

1

+

8 ×

0.1

+

2 ×

0.01

+

3 ×

0.001

Expanded Exponential Form:

7 × 101

+

4 × 100

+

8 × 10-1

+

2 × 10-2

+

3 × 10-3

Word Form:

seventy-four and eight hundred twenty-three thousandths

**Step-by-step explanation:**

see from Google

Can I have brainliest

70+4+.8+.02+.003 is the answer

A television with a price of $300 is to be purchased

with an initial payment of $60 and weekly payments

of $30. Which of the following equations can be used

to find the number of weekly payments, w, required

to complete the purchase, assuming there are no

taxes or fees?

### Answers

**Answer:**

8 weeks

**Step-by-step explanation:**

300-60= 240

240/30= 8

Select the defined terms in Geometry

1-plane

2-line segment

3-point

4-line

5-ray

### Answers

Line segment and ray are defined terms

Point, line, and plane are undefined terms because they have not thickness or width

cuál es el factor de 81

### Answers

3, 9 , 27 y 81

Por lo tanto de los factores de 81 los múltiplos de 3 son 3, 9, 27 y 81

3x+7 x 2x+3

step by step please im so confuzed

### Answers

**Answer:**

6x^2 + 23x + 21

**Step-by-step explanation:**

3x+7 x 2x+3

= 3x(2x) + 3x(3) + 7(2x) + 7(3)

= 6x^2 + 9x + 14x + 21

= 6x^2 + 23x + 21

Find the value of tan 6720 with out calculator

### Answers

The best thing I can say is use a online scientific calculator.

**Answer:**

[tex]\sqrt3[/tex]

**Step-by-step explanation:**

I'm assuming you're dealing with degrees.

If that's the case, then I would first find the closest multiple of 360 to that number.

360*20 = 7200, which is a bit too high; 360*19 = 6840, still a bit too high; 360*18 = 6480, perfect.

Now, just subtract 6480 from 6720 and you will get 240.

The answer is now simplified to tan 240, which can be expressed as sin(240)/cos(240).

240 degrees is 30 degrees away from 270, creating a 30-60-90 triangle.

That means cos(240) is -1/2 and sin(240) is -sqrt(3)/2.

Now, just divide:

[tex]-\frac{\sqrt3}{2}/-\frac{1}{2} = -\frac{\sqrt3}{2}\cdot-2 = \sqrt{3}[/tex]

Therefore, tan(6720 degrees) = [tex]\sqrt3[/tex]

Pls answer this quick! Thank you!

### Answers

**Answer:**

The answer is -11 and -9 only

**Step-by-step explanation:**