A car travels 20 mph slower in a bad rain storm than in sunny weather. the car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather. find the speed of the car in sunny weather. PLEASE SHOW YOUR WORK.

Answers

Answer 1
You can create two equations.

"A car travels 20 mph slower in a bad rain storm than in sunny weather."

[tex]\sf x-20=y[/tex]

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

"The car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather."

[tex]\sf 2x=3y[/tex]

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

We want to find the speed of the car in sunny weather, or 'x'. Plug in the value for 'y' in the first equation into the second equation.

[tex]\sf \boxed{\sf x-20}=y[/tex]
[tex]\sf 2x=3y\rightarrow2x=3(x-20)[/tex]

Distribute:

[tex]\sf 2x=3x-60[/tex]

Subtract 3x to both sides:

[tex]\sf -x=-60[/tex]

Divide -1 to both sides:

[tex]\sf x=60[/tex]

So the car goes 60 mph in sunny weather.
Answer 2

The speed of the car in sunny weather is calculated to be 60 mph, given that it travels the same distance in less time compared to its speed in a rainy weather, which is 20 mph slower.

Finding the Car's Speed in Sunny Weather:

Let's assume the speed of the car in sunny weather is s mph. Therefore, the speed of the car in a rain storm would be (s - 20) mph. Given that the car travels the same distance in both weathers, we can use the formula distance = speed * time to express the distance travelled in sunny weather and rainy weather.

In sunny weather, the car travels for 2 hours, hence the distance covered is 2s miles. In rainy weather, it travels for 3 hours, covering a distance of 3(s - 20) miles.

Since the distances are equal, we can equate them and solve for s:

2s = 3(s - 20)

2s = 3s - 60

s = 60 mph

Therefore, the speed of the car in sunny weather is 60 mph.


Related Questions

What is the lowest degree that a polynomial can have and explain.

Answers

The lowest degree a polynomial can have (and not be undefined) is to the first degree.  the simplest form of a polynomial of 1st degree would be f(x) = x or x^1  while x^0 exists but it would then be a constant.

100-8301>7320<8393+939=?

Answers

I'm not sure but I think you made a typo, or else I don't understand the question.
It should read
-8201 < 7320 < 9332
or am I missing something? 

Please help. Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

Answers

we know that

cos 45= sin 45
cos 45=√2/2-------> equation 1
in the problem
cos 45=y/11√2----> equation 2

equate 1 and 2
√2/2=y/11√2---------> y=11√2*(√2/2)---->y=11

the legs of the triangle are
11 units
11 units
the hypotenuse 
11√2

Paul walks 2 miles in 25 minuets. How many miles can Paul walk in 137.5 miles

Answers

Hey!
First thing we can divide 25/2 to get 12.5
Next we can multiply 137.5 * 12.5 to get your answer of 1,718.75 hope this helps
This is a proportion problem. 2 is to 25 minutes as x minutes is to 137.5 minutes ( I assume you meant minutes).

x= minutes walked in 137.5 minutes

2/25 = x/137.5
cross multiply
2*137.5 = 25*x
275 = 25x
divide both sides by 25
11 = x

He can walk 11 miles in 137.5 minutes.

Hope this helps! :)

find the length of the missing side of the right triangle. side is 8 bottom is 15 A. 289 B. 17 C. 23. D. 4.79

Answers

The answer to this question would be C

General Idea:

Pythagorean theorem states that in a right triangle, if side of triangle is given by ' a ', bottom of the triangle is given by ' b ' and hypotenuse of triangle is given by ' c', then Sum of squares of a and b is equal to the square of hypotenuse.

[tex] a^{2} \; +\; b^{2}\; =\; c^{2} [/tex]

Applying the Concept:

[tex] Given\\Side\;of\;triangle\;(a)\; =\; 8\\ Bottom\;of\;triangle\;(b)=15\\ \\ To\; Find\\Hyptotenuse\;(c)\\ \\ a^{2}+b^{2}=c^{2}\\ 8^2+15^2=c^2\\ \\ 64+225=c^2\\ \\ 289=c^2\\ \\ c^2=289\\ Taking \; Square\;root\;on\;both\;sides\\ \\ \sqrt{c^2}=\sqrt{289} \\ \\ c=17 [/tex]

Conclusion:

The length of the missing side of the right triangle, when side 8 & bottom 15 is 17. The correct answer is option B!!

68 is decrease by 15%

Answers

68 divided by 100 = 0.68
0.68 x 15 = 10.2
68-10.2 = 57.8
57.8 is your answer

100% - 15% = 85%
After decreasing by 15%, there will be 85% left

100% = 68
1% = 68 ÷ 100 = 0.68
85% = 0.68 x 85 = 57.8

Select all of the terms that apply to the shape.



pentagon
hexagon
heptagon
octagon
nonagon
decagon
regular polygon
irregular polygon
concave
convex

Answers

Answer:

The terms apply to the given shape are pentagon, irregular polygon and convex polygon.

Step-by-step explanation:

A polygon which have 5 sides called pentagon and if these sides are unequal then it is irregular pentagon or we can say irregular polygon.

A convex polygon is defined as a polygon with all its interior angles less than 180°.

Hence, the terms apply to the given shape are pentagon, irregular polygon and convex polygon.

Answer: Your answer is

convex, pentagon, irregular polygon.

Hope this helps!!! Trust me it's right I got mine right!!

what it is the original price of a new board game that cost $31.25 after a 15% discount

Answers

31.25 divided by 0.85 =36.76 original

Estimating square roots

Answers


Search "Square root of ANY number instantly - shortcut math." on youtube. It will teach you everything you need to know.

Maria invested $2000 in an account that earns 4.5% interest , compounded annually. The formula for compound interest is A(t) =P(1+l)×
How much did Maria have in the account after 5 years ?
A. $10,450.00
B. $2492.36
C. $2450.00
D. $12,819.47

Answers

Answer:

B. $2492.36

Step-by-step explanation:

We are given the formula for compound interest,

[tex]A(t)=p(1+i)^x[/tex] where p is the amount of principal, i is the interest rate and x is the number of years.

In our problem, p is 2000, i = 4.5% = 4.5/100 = 0.045, and x is 5:

[tex]A(t)=2000(1+0.045)^x\\\\A(5)=2000(1.045)^5\approx 2492.36[/tex]

Maria will have [tex]\$\ 2492.36[/tex] in her account after [tex]5[/tex] years.

What is compound interest ?

Compound interest is the interest which is received on the principal and the previous interest.

Amount [tex]=P(1+\frac{R}{100})^t[/tex]

We have,

Invested principal [tex]=\$2000[/tex]

Compound interest Rate [tex]=4.5\%[/tex]

Time of investment [tex]=5[/tex] years

So,

Using the above mentioned formula;

Amount [tex]=P(1+\frac{R}{100})^t[/tex]

              [tex]=2000(1+\frac{4.5}{100})^5[/tex]

              [tex]=2000(1+\frac{9}{200})^5[/tex]

              [tex]=2000\ *\ (\frac{209}{200})^5[/tex]

Amount [tex]=\$\ 2492.36[/tex]

So, Amount in Maria's account is [tex]\$\ 2492.36[/tex].

                       

Hence, we can say that Maria will have [tex]\$\ 2492.36[/tex] in her account after [tex]5[/tex] years.

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Quadrilateral ABCD is inscribed in a circle. What’s the measure of angle B

Answers

Well the equation is 6x + x + 19 = 180 or 7x + 19 = 180. You subtract 19 from 180 to get 161. Then you divide 161 by 7 to get x = 23. Finally, you plug x in to get 6(23) + 19 or 157°

Which of the following quadratic equations has the solution set (1/2,5)? Select all that apply
(x+1/2)(x-5)=0
(x-5)(2x-1)=0
(x+5)(2x-1)=0
(-2x+1)(-x+5)=0
(x+1/2)(x+5)=0
(-2x+1)(x-5)=0

Answers

To find the solution set of a factored quadratic equation, you should set each one of the factors equal to zero and solve for [tex]x[/tex].

Lets take our first quadratic equation (x+1/2)(x-5)=0 and apply this. First we are our factors equal to zero [tex]x+ \frac{1}{2} =0[/tex] and [tex]x-5=0[/tex]; next we are going to sole for [tex]x[/tex] in each factor to find the solution set:
[tex]x=- \frac{1}{2} [/tex] and [tex]x=5[/tex], so the solution set for the quadratic equation (x+1/2)(x-5)=0 is [tex](- \frac{1}{2},5)[/tex]

Lets do the same for our next one (x-5)(2x-1)=0
[tex]x-5=0[/tex]
[tex]x=5[/tex]
and
[tex]2x-1=0[/tex]
[tex]2x=1[/tex]
[tex]x= \frac{1}{2} [/tex]
So, the solution set for the quadratic equation (x-5)(2x-1)=0 is [tex](5, \frac{1}{2}) [/tex]

Next one (x+5)(2x-1)=0
[tex]x+5=0[/tex]
[tex]x=-5[/tex]
and 
[tex]2x-1=0[/tex]
[tex]2x=1[/tex]
[tex]x= \frac{1}{2} [/tex]
So, the solution set for the quadratic equation (x+5)(2x-1)=0 is [tex](-5, \frac{1}{2} )[/tex]

Next one (-2x+1)(-x+5)=0
[tex]-2x+1=0[/tex]
[tex]-2x=-1[/tex]
[tex]x= \frac{-1}{-2} [/tex]
[tex]x= \frac{1}{2} [/tex]
and
[tex]-x+5=0[/tex]
[tex]-x=-5[/tex]
[tex]x=5[/tex]
So, the solution set for the quadratic equation (-2x+1)(-x+5)=0 is [tex]( \frac{1}{2} ,5)[/tex]: therefore, we are going the select this one.

Next one (x+1/2)(x+5)=0
[tex]x+ \frac{1}{2} =0[/tex]
[tex]x=- \frac{1}{2} [/tex]
and
[tex]x+5=0[/tex]
[tex]x=-5[/tex]
So, the solution set for the quadratic equation (x+1/2)(x+5)=0 is [tex](- \frac{1}{2} ,-5)[/tex]

Finally, our last one (-2x+1)(x-5)=0
[tex]-2x+1=0[/tex]
[tex]-2x=-1[/tex]
[tex]x= \frac{-1}{-2} [/tex]
[tex]x= \frac{1}{2} [/tex]
and
[tex]x-5=0[/tex]
[tex]x=5[/tex]
So, the solution set for the quadratic equation (-2x+1)(x-5)=0 is [tex]( \frac{1}{2} ,5)[/tex]; this is also a correct answer, make sure to select this one too.

We can conclude that both (-2x+1)(-x+5)=0 and (-2x+1)(x-5)=0 quadratic equation have [tex]( \frac{1}{2} ,5)[/tex] as solution set.

Which type of data is presented on the y-axis
A. Age
B. Credit card debt
C. Age and credit card debt
D. Averages

Answers

Answer:

1.

Q: What is the purpose of a scatter plot?

A: B. To help visualize the relationship between two types of data.

2.

Q: What is Microsoft Excel particularly well-suited for?

A: D. organizing data

3.

Q: Which type of data is presented on the y-axis?

A: B. Credit card debt

4.

Q: How many people are presented on the scatter plot?

A: C. 13

5.

Q: Which of the following choices could be the approximate coordinates for the oldest person on the scatter plot?

A: A. (58, $7,800)

Just took it! 5/5 100%

Credit card debt is the type of data is presented on the y-axis

What is Graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

We need to find the type of data presented on the y axis.

The given graph is a scatter plot.

A scatter plot uses dots to represent values for two different numeric variables.

The vertical line in the graph represents the y axis.

The horizontal line in the graph represents the x - axis.

In the given graph, the age is represented in the x axis and credit card debit is represented on the y-axis.

Hence, Credit card debt is the type of data is presented on the y-axis

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Mrs Gomez is having a party to celebrate the hard work of the students in her class. Mrs Gomez has 34 students in the class. The tables in the classrooom only have room for ten students to sit at each table. How many tables does Mrs Gomez need in order to have for all 34 of the students to sit

Answers

She'd need four tables, since 3 would only sit 30 and she would need 4 to sit all 34.
she needs four tables to fit all students

Can someone please help me find the arc length ?

Answers

80 x 8.164653.12
653.12/360 = 1.814

 arc length = 1.814 ( Round answer as needed)

jeff pizza is cut into 8 equal pieces. he eats 1/2 of it. Samantha says he ate 2/8 of the pizza. how did she get the answer?

Answers

how she probably are the answer is by and by her thinking that if you eat 1/2 since half is too she put two and she thought he could only to have the two slices maybe that's how did the error went but to the right as yours actually see so you are correct and she is wrong

Answer:

4/8

Step-by-step explanation:

One side of a rectangle is five times as long as the other side. If the perimeter is 72 meters, what is the length of the shorter side?

Answers

The length is 5x
The width is x

5x+x+5x+x=72
12x=72
x=6

The length of the shorter side is 6 meters
Let's say that the length of the shorter side is x. The longer side is 5 times longer.
Equation: 
Step 1: x
Step 2: 5*x
Step 3: (5x*2)+(2*x)
Step 4: 10x+2x=72
Step 5: 12x=72
Step 6: x=6
So the answer is 6

Alice burned 320 calories at the gym. She burned 6 calories per minute on the treadmill and 10 calories per minute on the elliptical. Alice exercised for 45 minutes in all. How many minutes did she spend on the treadmill?

Answers

she worked out for 32  mins

Answer:

The rate of change is obviously that term that describe the change over a certain period. In this problem, we are given with the condition that LaToya is able to burn 20 calories per minute. Therefore, the rate of change is 20 calories per minute.  

Step-by-step explanation:

Llene is making smoothies.The recipe calls for 1 1/4 cups of strawberries, How many cups of strawberries, written as a fraction greater than one, are used in the recipe?

Answers

Final answer:

The recipe calls for 1 1/4 cups of strawberries, which is equivalent to 5/4 cups when written as an improper fraction.

Explanation:

The question asks, "How many cups of strawberries, written as a fraction greater than one, are used in the recipe?" The recipe calls for 1 1/4 cups of strawberries. This quantity is already given in the form of a mixed number, which combines a whole number (1) and a fraction (1/4). To write it as a fraction greater than one, which is also called an improper fraction, you multiply the whole number by the denominator of the fraction and then add the numerator of the fraction. So, the calculation would be (1 × 4) + 1 = 5, making the fraction 5/4. Therefore, the recipe uses 5/4 cups of strawberries written as an improper fraction.

Someone help
i need help

Answers

the equation is :
c=24/6
the answer is :
4 ounces.
24/6=x

Dividing 24 by 6 gives you 4 ounces each sandwich.









a can of soup contains about 553 cubic centimeters of soup. the height of the van is 11 centimeters. what is the approximate diameter of the can to the nearest centimeter?

Answers

Assume that the can of soup has a cylinder shape with the volume of 553 cubic centimeter

V of cylinder = Area of base circle * height of the can
Area of a circle = pi*r^2

V = pi*r^2*11==> pi*r^2*11 = 553
==> r^2 = 553/11*pi
==>r^2 = 16
==>r = 4 cm for the radius, diameter = 2r = 8 cm

There is a sales tax of $22 on an item that costs $272 before tax. The sales tax on a second item is $19.25. How much does the second item cost before tax?

Answers

Final answer:

The sales tax rate was calculated based on the information of the first item, and we found it to be approximately 8.09%. Using this tax rate, the pre-tax price of the second item, on which the sales tax was $19.25, was found to be approximately $237.85.

Explanation:

To solve this problem, we first need to determine the percentage rate of the sales tax based on the first item. Given that a sales tax of $22 was applied to an item that cost $272 before tax, we can calculate the tax rate as follows: (22/272)*100 = 8.09%. This indicates that the tax rate is approximately 8.09%.

Next, if we assume that the sales tax rate is the same for the second item, we can calculate the pre-tax price of this item. Given that the sales tax on the second item is $19.25, the price of the item before tax can be calculated as follows: 19.25/0.0809 = $237.85 approximately. Therefore, the second item costs about $237.85 before tax.

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What is -4 + 3/2= ?

Answers

-4 + 3/2=

Exact Form:

-5/2

Decimal Form:

-2.5

Mixed Number Form:

-2  1/2

Answer:

[tex]\frac{-5}{2}[/tex], [tex]-2\frac{1}{2}[/tex], -2.5

Step-by-step explanation:

So what we want to do is get both of the numbers into the appropriate fraction. So we already have 2 as a fraction so lets just convert -4 into fraction form with a denominator as 2.

[tex]-4+\frac{3}{2}[/tex]

-4 in fraction form is [tex]\frac{-8}{2}[/tex]

We can determine that it is in the right fraction form as if you divide -8 by 2, you would get -4 as the answer so...

[tex]-4 = \frac{-8}{2}[/tex]

Now rewrite the equation now

[tex]\frac{-8}{2} + \frac{3}{2}[/tex]

Now simplify

-8 + 3 = -5

[tex]\frac{-8}{2} + \frac{3}{2}[/tex][tex]= \frac{-5}{2}[/tex]

-5/2

This can be simplified to [tex]-2\frac{1}{2}[/tex]

Or to the decimal form which is -2.5

name the set or sets of numbers to which negative 10 belongs to

Answers

Its natural numbers, whole numbers, and integers
I believe it’s whole numbers, integers and rational numbers.
I hope this helped! :-)

Find the perimeter and area of the polygon enclosed by points

Answers

7171191837391011 382018w720101 2810117

∠1 and ​ ∠2 ​ are vertical angles. ∠2 ​ has a measure of 31°. What is the measure of ​ ∠1 ​? Enter your answer in the box. °

Answers

The meaning of vertical angles are two congruent angles formed by the intersection of two straight lines. 

On this question is given that angles one and two are vertical, and the measure of one of them or angle two is 31 degrees.
As said before vertical angles are congruent, or have the same measurement.

Meaning that angle one is equal to 31 degrees.

to prepare for competitions your swimming coach required you to swim 8 lengths in the pool you swam 10 lenghts what percent of the required practice did you swim

Answers

100% you did 2 more lengths than what you were required to complete

Betsy is collecting coins she has 25 quarters 3times as many nickels than quarters and 2times as many pennies than nickels how many coins does Betsy have?

Answers

you know how im rocking like cut off stocking . 

Answer: 250 coins

Step-by-step explanation:

Betsy has 25 quarters

let quarters = q

nickels = n

pennies  =  p

n = 3q = 3*25 = 75

p = 2n = 2* 75 = 150

she has total  of 25 + 75 + 150= 250 coins

Last year, the tree in Pedro's front yard was 5 feet tall. This year, the tree is 2 feet less than the height of Pedro's house. Pedro's house is 17 feet tall. How tall is the tree?

When responding to this question, please justify/explain your answer. You may use words, numbers and/or symbols to answer your question. Please write in COMPLETE sentences.

Answers

The tree is 15 feet tall

The tree in Pedro's front yard was 5 ft tall last year.

This year, the tree is 2 feet less than the height of Pedro's house.

let

the height of the tree = x

Therefore,

height of the house = 17 feet

17 - 2 = x

x = 15 ft

Therefore, the tree is 15 feet tall

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Final answer:

The tree in Pedro's front yard is currently 15 feet tall, which is 2 feet shorter than the height of Pedro's 17 feet tall house.

Explanation:

Last year, the tree in Pedro's front yard was 5 feet tall. This year, the tree is 2 feet shorter than the height of Pedro's house. If Pedro's house is 17 feet tall, we need to calculate the tree's current height by subtracting 2 feet from the height of the house. Therefore, the tree's current height would be 17 feet - 2 feet = 15 feet tall.

6 friends go out for dinner and order from a menu of 8 different sandwiches. What is the probability that at least 2 of the group order the same sandwich?

Answers

There are 8^6 = 262,144 ways the 6 friends can order sandwiches.
There are 8*7*6*5*4*3 = 20,160 ways they can all order different sandwiches.

Your probability is 1 - 20160/262144 = 3781/4096 ≈ 0.9231.
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