please helpppppp!!!!!

How far does the first car will drive in the 2 hours head start it gets? Now, at t = 2 hours, both cars are moving. How much faster is the second car than the first car? You can determine this by dividing the head start by the difference in the two speeds. If car 1 has a 20-mile head start, and car two is five mph faster, then it will take 20/5 = 4 hours to catch up.

Answers

Answer 1
let they meet after second car travels for x hours'
let v be the speed  of second car and V be speed of first car.
Then time taken by first car=x+2
V(x+2)=vx (distance covered is same.)
[tex] \frac{v}{V} = \frac{x+2}{x} subtract 1 from both sides \frac{v-V}{V} = \frac{2}{x} v-V= \frac{2V}{x} [/tex]



Related Questions

jeremy mowed several lawns to earn money for camp. after he paid $17 for gas, he had $75 leftover to pay towards camp. write and solve and solve an equation to find how much money jeremy earned mowing lawns.

Answers

money earned = e=75+17=92

To find the total amount Jeremy earned from mowing lawns, we set up the equation x - $17 = $75 where x is the total earnings. Solving the equation, we find that Jeremy earned a total of $92.

The amount of money Jeremy earned mowing lawns can be found by setting up a simple algebraic equation. We know that after paying $17 for gas, he had $75 leftover for camp. Therefore, we can write the equation as:

Total Earnings - Gas Cost = Money for Camp

Let x represent the total amount Jeremy earned. The equation will then be:

x - 17 = 75

Now, we solve for x:

x = 75 + 17

x = 92

Jeremy earned a total of $92 from mowing lawns.

Which line is a line of symmetry for this regular polygon?
A. Line g
B.line h
C.line i

Answers

A. line g is th line of symmetry

What is 60% of 33...................................................?

Answers

60% of 33 is 19.8 is the answer

To find 60% of 33, first write 60% as a decimal by moving the decimal point two places to the left to get .60.

Next, the word "of" means multiply, so we are are going to multiply.

(.60) (33) = 19.8

Therefore, 60% of 33 is 19.8.

The table shows the steps for solving the given inequality for x. 7x+16<−5(4−5x)7x+16<−5(4−5x) Select the reason for each step from the drop-down menu(s). ​ 7x+16<−5(4−5x)7x+16<−5(4−5x) ​ Given ​ 7x+16<−20+25x7x+16<−20+25x ​ Distributive Property ​ 16<−20+18x16<−20+18x ​ ​ 36<18x36<18x ​ ​ 2

Answers

I thanks is 7x+16<-20+25x7x+16<-20+25x
7x +16 < -5(4 - 5x)....given
7x + 16 < -20 + 25x....distributive property
16 < -20 + 18x ... subtraction property
16 + 20 < 18x.....addition property
36 < 18x
36/18 < x.....division property
2 < x

Convert 3/20 to a percent

Answers

Answer: 15% , you divide the Numerator by the Denominator and you will get a decimal of . 15 then you multiply that by 100 and you will get your percentage which in this case is 15%

To write a fraction as a percent, first remember that a percent is a ratio of a number to 100. If we want to convert [tex]\frac{3}{20}[/tex] to a percent, we need to find a fraction equivalent to [tex]\frac{3}{20}[/tex] that has a 100 in the denominator. We can do this by setting up a proportion.

[tex]\frac{3}{20}[/tex] = [tex]\frac{n}{100}[/tex]

Now, we can use cross products to find the missing value.

3 × 100 = 300

20 × n = 20n

300 = 20n ← Divide both sides by 20.

15 = n

Therefore, [tex]\frac{3}{20}[/tex] as a percent would be 15%.

Kevin sold 2 unicycles and 1 bicycle for a total of $110. Greg sold 4 unicycles and 3 bicycles for a total cost of $268. What is the cost of 1 bicycle?
Answer

$27

$31

$48

$79
Kevin sold 2 unicycles and 1 bicycle for a total of $110. Greg sold 4 unicycles and 3 bicycles for a total cost of $268. What is the cost of 1 bicycle?
Answer

$27

$31

$48

$79

Answers

The cost of 1 bicycle is $48 by using the system of equations.

What are word problems?

Word problems are a mathematical interpretation by using variables, numbers, and arithmetic operations to solve real-life problems.

From the given information:

kevin: 2U + 3B = 110 --- (1)Greg: 4U + 3B =268 ---- (2)

We have a system of equations, and we can solve for the cost of1 bicycle

Using the Elimination method:

4U + 3B = 268

-2U + 3B = 110

2U + 0    = 158

U = 158/2

U = 79

The cost of 1 bicycle = 4(U) - 268

= 4(79) - 268

= 316 - 268

= $48

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Answer:

$48

Step-by-step explanation:

Got it right on flvs

a line segment can grow from which of the following ?
a. zero dimensional objects
b.one dimensional objects
c three dimensional objects ?
...?

Answers

Final answer:

In mathematics, a line segment can grow from a) zero-dimensional points or b) one-dimensional line segments but cannot grow from a three-dimensional object due to differences in properties such as volume.

Explanation:

In the field of mathematics, a line segment can grow from a zero-dimensional point and a one-dimensional line segment. The process of a line segment growing from a point involves extending out in a certain direction from the zero-dimensional point. When we say a line segment can grow from a one-dimensional object, it means an existing line segment can be extended to become a longer line segment.

A line segment cannot 'grow' from a three-dimensional object because a line segment is a one-dimensional entity, and dimensional objects have 'volume,' a property which a line segment does not possess.

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the ratio of length to width in a rectangle is 3:1. If the perimeter of the rectangle is 112 feet, what is the length of the rectangle?

Answers

I hope this helps you

Length of the rectangle= 42 feet

Width of the rectangle =14 feet

What is rectangle?

A rectangle is a closed two-dimensional figure with four sides. The opposite sides of a rectangle are equal and parallel to each other and all the angles of a rectangle are equal to 90°.

Given,

Ratio of length to width of rectangle = 3:1

Let width be x then length will be 3x

Perimeter of the rectangle = 112 feet

2(Length + Width) = 112

2(3x + x) = 112

2(4x) = 112

8x = 112

x = 112/8

Width x = 14 feet

length = 3x = 3×14 = 42feet

Hence, 42 feet is length and 14 feet is width of the rectangle.

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if p(x,y) is the point on the unit circle defined by real number theta, then csc theta= _____. a. x/y. b. y/x. c. 1/x. d. 1/y.

Answers

Answer:

Option d is correct

[tex]Csc \ \theta =\frac{1}{y}[/tex]

Step-by-step explanation:

Here P(x,y) is the point on unit circle  ( unit circle has radius 1 and center (0,0))

Now in a diagram we can see that

OA= x

AP= y

radius OP =1

∠POA =θ

Now in ΔAOP

[tex]Csc\ \theta =\frac{hypotenuse }{opposite \ side} \\Csc\ \theta =\frac{OP}{AP}[/tex]

[tex]Csc \ \theta =\frac{1}{y}[/tex] ( since OP =1 and AP =y)

Answer:

1/y

Step-by-step explanation:

apex

What is the value of the expression when a = 6, b = 4,and c = 8?

2a/3b−c

A. 1

B. 3

C. 8

D. 12

Answers

The answer is: [B]: 3.
______________________________________________
Let us assume that the problem is meant to be written as:
_______________________________________________
  2a / (3b - c) ;

Explanation:
___________________
we are given the values for "a", "b", "c" ; and we are asked to solve the problem when the given values: 
      a = 6, b = 4; and c = 8 .
________________________
Note:
________________________
We have a "numerator" , " 2a " ; and a "denominator" , (3b - c).
_______________________
Let us start by finding the numerator: 
_________________________________
Numerator: 2a = 2*a = 2 * 6 = 12.
_______________________________________
Denominator: 3b - c  = (3*4) - 8 = 12 - 8 = 4
_______________________________________
To solve: Numerator ÷ Denominator = 12 ÷ 4 = 3.
_______________________________________
The answer is: [B]: 3.
_______________________________________

Find the area of a rectangular garden box if the length is square root of 6ft. and the width is square root of 21 ft. Write the answer in simplest radical form.

2. There is a threshold on a person's weight that tells doctors when a person is at a greater risk of death. In men, ages 40 - 49, that threshold weight is represented by h=12.3 squared 3 square root of T, where h is height in inches and T is the threshold weight. If a doctor told a 43 year old man that his threshold weight was 218 lbs what would that man's height be (in the form of feet -inches: Ex: 5 ft 9 in)?

Answers

1. A = LW

[tex]A = \sqrt{6} \sqrt{21} [/tex]

[tex]A = \sqrt{6 \times 21}

A = \sqrt{2 \times 3 \times 3 \times 7}

A = \sqrt{3^2 \times 14} A = 3\sqrt{14} ~ft^2[/tex]

if f(x)={(3,5),(2,4),(1,7)} and g(x)=square root(x-3) what do i do to determine (f+g)(1) ...?

Answers

( f + g ) ( 1 ) = f ( 1 ) + g ( 1 ) 
f ( 1 ) = 7
g ( 1 ) = √( 1- 3 ) = √( - 2 ) = √ 2 · √(-1 ) = i √ 2     ( we know that √(- 1 ) = i , or irrational number )
Answer:
( f + g ) ( 1 ) = 7 + i √ 2

Factor the expression:
x3 - 2x2 - 9x + 18 ...?

Answers

Final answer:

To factor the expression x³ - 2x² - 9x + 18, use the grouping method to factor out a common binomial factor.

Explanation:

To factor the expression x³ - 2x² - 9x + 18, we can first look for any common factors. Since there are no common factors among all the terms, we will use the grouping method to factor the expression.

Step 1: Group the terms in pairs.
(x³ - 2x²) - (9x - 18)
Step 2: Factor out the greatest common factor from each pair.
x²(x - 2) - 9(x - 2)
Step 3: Notice that we now have a common binomial factor of (x - 2).
(x² - 9)(x - 2)

Therefore, the factored form of the expression x³ - 2x² - 9x + 18 is (x² - 9)(x - 2).

Final answer:

The student is looking to factor the polynomial expression x^3 - 2x^2 - 9x + 18. This process typically involves finding whether factors like binomials divide the polynomial without a remainder, using methods like grouping, trial and error, or the Rational Root Theorem, followed by long or synthetic division.

Explanation:

The student has asked to factor the expression x^3 - 2x^2 - 9x + 18.

To factor this expression, we can follow a systematic approach, which often starts with looking for common factors or applying techniques such as grouping, trial and error, or the use of the Rational Root Theorem. In this case, we may not see an immediate common factor, so we might try to group terms or apply synthetic division or the Rational Root Theorem to identify potential roots of the polynomial.

A factor of a polynomial is a binomial (or another polynomial) that divides the original polynomial without leaving a remainder. If we find such a factor, we can then divide the original polynomial by this factor to simplify the expression further. For example, if we discover that (x - 3) is a factor, then we can divide the polynomial by (x - 3) to find the other factors.

Unfortunately, without performing the actual factoring process or having additional information, we cannot factor this specific expression purely based on the question provided. If we had one root or factor given, we could use long division or synthetic division to further factor the expression, and then possibly factorize it completely into the product of binomials or another polynomial.

what is the answer of x − 62,500 = 0.25y

Answers

 y = 125,000 
x − 62,500 = y/4 

x − 62,500 = 125,000/4 

x = 31,250 + 62,500 

 x = 93,750 votes 
X - 62 would be the correct answer.

The measure of two sides of a triangle are 3.1 feet and 4.6 feet. What is the LEAST possible measure to the nearest tenth for the third side?
a- 1.6
b- 4.6
c- 7.5
d- 8 ...?

Answers

i BELIVE IN YOU!!! THE ANSWER IS D
Because:
 
3.1 + 1.6 =4.7 
4.7>4.6

Therefore, the answer should be letter A. 1.6

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!


A triangle with a base of 1/4 meter has an area of 8 square meters. What is the height, in meters, of the triangle?

Answers

The area of a triangle is equal half times base times height ([tex]A= \frac{1}{2} *b*h[/tex]). As we need height in this situation, we can solve for height. To do this, multiply both sides by 2, 2A=bh, then divide both sides by b, (2A)/b=h. Now, plug in your known values and solve. [tex]h= \frac{2*8}{1/4} =16*4=64[/tex]. This means you have a height of 64 meters.
divide 1/4 from 8 then convert whatever you get into meters by...well...converting it..GOOD LUCK DUUUUDE!!![

Find the simple interest to the nearest cent for each principal, interest rate, and time. $1,200, 3.9%, 8 months.

Answers

The answer to that equation is 3 cents

SOLVE. Show step-by-step solution. 3.2 - 4d = 2.3d + 3

Answers

3.2-4d=2.3d+3 Subtract from both sides 3: 0.2-4d=2.3d Add to both sides 4d: 6.3d=0.2 Dived both sides by 6.3: d=31.5

The solution to the equation 3.2 - 4d = 2.3d + 3 is d = 0.0317.

The given equation is,

3.2 - 4d = 2.3d + 3

Combine like terms by adding 4d to both sides of the equation:

3.2 - 4d + 4d = 2.3d + 3 + 4d

3.2 = 6.3d + 3

Move the constant term (3) to the other side of the equation by subtracting 3 from both sides:

3.2 - 3 = 6.3d + 3 - 3

0.2 = 6.3d

Divide both sides of the equation by 6.3 to isolate the variable d:

0.2/6.3 = 6.3d/6.3  

d = 0.0317

So, the solution to the equation 3.2 - 4d = 2.3d + 3 is d = 0.0317.

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The U.S. senate is composed of 2 senators from each of the 50 states. In order for a treaty to be ratified, at least two thirds of the senators present must approve the treaty. Suppose all senators are present and 48 of them have voted in favor of a treaty. What are the possible numbers of additional senators who must vote in favor of the treaty in order to radify it?

Answers

Answer: So, the possible number of additional senators who must vote in favor of the treaty in order to radify it is given by

[tex]19\leq x\leq 52[/tex]

Step-by-step explanation:

Since we have given that

Number of states = 50

Number of senators from each of the 50 states = 2

Total number of senators would be

[tex]50\times 2\\\\=100[/tex]

Since [tex]\dfrac{2}{3}[/tex] of the senators present must approve the treaty.

[tex]\dfrac{2}{3}\times 100\\\\=66.67[/tex]

Number of senators have voted in favor of a treaty = 48

So, remaining senators would be

[tex]67-48\\\\=19[/tex]

Let x be the number of senators needed.

So, Inequality would be

[tex]x\geq 19[/tex]

Now, [tex]100-48=52[/tex]

[tex]x\leq 52[/tex]

So, the possible number of additional senators who must vote in favor of the treaty in order to radify it is given by

[tex]19\leq x\leq 52[/tex]

The mean for average temperature in Buffalo ,New york , is 47.5°. The temperture fluctuates 23.5° above and below the mean temperture . If t=1 present January ,the phase shift of the sine function is 4
a) Write the funtion for the average monthly tempperature in Buffalo
b) According to your modle ,what is the average tenperature in March ?
c) According to your modle ,what is the average tenperature in August ?

Answers

1) According to the statement, the Temperature will be modeled with a sine function.

2) a genaral sin function is of the type: Asin(mt + p) + M

where:

t is the variable

A is the amplitud: the fluction fluctuate +/- A units over the mean value. A = 23.5°

M is the mean value. M = 47.5°

m is the frequency, which we need to be 2π/12 (the complete cycle is 12 months) = m = π/6

p is the phase shift, which is 4. p = 4

Then:

a) the model or function is T(t) = 47.5° + 23.5* sin [ (π/6) t + 4]

b) T in march => t = 3

T(3) = 47.5° + 23.5° sin [ (π/6)*3 + 4] = 32.1 °


c) T in august => t = 8

T(8) = 47.5° + 23.5° sin [ (π/6)*8 + 4] = 69.7 °





Based on the figure, Jordan says that 2/3 RW=RU. Kendra disagrees. Is either of them correct? ...?

Answers

Based on the given figure, Jordan's statement is incorrect, so that would make Kendra right for disagreeing to what he said. Here is the explanation. RU is bigger than RW. This can only be true in order instances which is for example, when the given triangle is equilateral. But going back to the given figure, it is not what is presented. So, i hope this answers your question.

State the X- and Y- intercepts of each function.


2/3x - 1/3y = 2

Answers

X and Y both represent the position on a graph. So, to find the X- or Y- intercepts, simply set the other value to zero. (After all, the x-intercept is when y is zero, and vice versa.)
So for X...
2/3x-1/3(0)=2
2/3x=2
/(2/3)
x=3
So the X-intercept is at (3,0).
Now, the y-intercept.
2/3(0)-1/3y=2
-1/3y=2
/(-1/3)
y=-6
So the Y-intercept is at (0,-6).

Cory earns $20 for every lawn he mows and $9 for every hedge he trims. He uses the expression 20x + 9y to keep track of his earnings.

Part A: Identify the coefficients and variables in the expression.

Part B: How many terms are in the expression, what are they, and how do you know?
Part C: Which term in the expression shows the total earned from trimming hedges?

please help.

Answers

Part A: The coefficients are 20 and 9 and variables in the expression are x and y.
Part B: The number of terms are two in the expression, they are 20x and 9y,as they are separated by an addition sign.
Part C: 9y term in the expression shows the total earned from trimming hedges.

Which ordered pair could not be the coordinates for a clockwise rotation of the point W(-3, 4)?

Answers

clockwise will be (-4,3)

Which equation is equivalent to –k + 0.03 + 1.01k = –2.45 – 1.81k?

Answers

k(-1+1.01)+0.03=-2.45-1.81k
0.01k+1.81k=-0.03-2.45
1.82k=-2.42
k=-2.45\1.82=1.3

The equivalent equation is: -100k + 3 + 101k = -245 - 181k

Finding the Equivalent Equation

We need to find the equation equivalent to:

-k + 0.03 + 1.01k = -2.45 - 1.81k

To eliminate decimals, we can multiply the entire equation by 100:

100*(-k + 0.03 + 1.01k) = 100*(-2.45 - 1.81k)

This simplifies to: -100k + 3 + 101k = -245 - 181k

Therefore, the equivalent equation is: -100k + 3 + 101k = -245 - 181k

Complete question:

Which equation is equivalent to –k + 0.03 + 1.01k = –2.45 – 1.81k?

–100k + 3 + 101k = –245 – 181k

–100k + 300 + 101k = –245 – 181k

–k + 3 + 101k = –245 – 181k

–k + 300 + 101k = –245 – 181k

What number between 30 and 40 has only itself as factors?

Answers

prime numbers: 31 & 37
The numbers between 30 and 40 only factors are one and themselves, and the prime numbers are 31 and 37.

what is d/dx(1/sinx) ...?

Answers

[tex] \frac{d}{dx} \frac{1}{\sin{x}}= \frac{d}{dx}\sin^{-1}{x}=-1 \frac{d}{dx}\sin{x}=-(-\cos{x})=\cos{x}[/tex]

what is the lcm of 14 and 42

Answers

The LCM is 42.
14x3=42

the graph shows the changes in population of black bears in rural michigan during a single year. competition for food among the black bear population was most likely the greatest during the

Answers

As logic says, the competition for food would be highest when number of bears is at peak. From the graph we can see that the peaks are in months 2,4,5 and 6. If the question was at what season it was, the answer is in spring because at that season there are 3 months with high competition for food.

Answer:

C)  

late spring.

Step-by-step explanation:

just did the test on usatestprep

factorise 12y+16y

need help with maths homework

Answers

the answer is    28y hope this helps

4y(3 + 4), because they both have 4y in common, and if you multiply 4y by 3 you get 12y, and multiplied by 4 you get 16y. Hope this helps!
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