Find both unit rates. $8.40 for 8 ice-cream cones A. $0.95 per cone and 1.05 cones per dollar B. $1.05 per cone and 0.95 cones per dollar C. $2.10 per cone and 1.9 cones per dollar D. $1.90 per cone and 2.1 cones per dollar

QUESTION POSTED AT 03/12/2019 - 12:36 PM

Answered by admin AT 03/12/2019 - 12:36 PM

$8.40 per eight cones is 8.40/8=1.05 dollars per cone and 8/8.4=.95 cones per dollar.
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Related questions

Write or draw to explain a way to find each sum: 6+7, 8+4, 2+9

Step-by-step explanation:

For 6+7, on a number line we have placed a point A on value 6. On moving 7 units in the rightwards direction a point B is marked. That means when we move from 0 to point B, we get the result for 6+7 = 13.

For 8+4, on a number line we have placed a point C on value 8. On moving 4 units in the rightwards direction a point D is marked. That means when we move from 0 to point D, we get the result for 8+4 = 12.

For 2+9, on a number line we have placed a point E on value 2. On moving 9 units in the rightwards direction a point F is marked. That means when we move from 0 to point F, we get the result for 2+9 = 11.



ANSWERED AT 14/12/2019 - 06:25 PM


QUESTION POSTED AT 14/12/2019 - 06:25 PM

A number is chosen at random from 1 to 10 find the probability of selecting a multiple of 3

 a multiple of 3,3 6 and 9. since there are 10 options, you have a 3 in 10 of a  chance of getting a multiple of 3

ANSWERED AT 14/12/2019 - 06:25 PM


QUESTION POSTED AT 14/12/2019 - 06:25 PM

Find the slope between points (4, 6) and (-2, 6).

The slope is 0

y2-y1/x2-x1

6-6/-2-4 = 0/-6

ANSWERED AT 14/12/2019 - 06:22 PM


QUESTION POSTED AT 14/12/2019 - 06:22 PM

Sam needs 5/6 cup mashed bananas and 3/4 Cup mashed strawberries for a recipe. He wants to find whether he needs more bananas or more strawberries . How can he write 5/6 and 3/4 as a pair of fractions with a common denominator

Answer: He needs more strawberries than banana.

Step-by-step explanation:

Since we have given that

Number of cups of mashed bananas is given by

\frac{5}{6}

Number of cups of mashed strawberries is given by

\frac{3}{4}

We need to find whether he needs more bananas or more strawberries.

For this we need a common denominator.

1) Taking L.C.M.  of denominator :

L.C.M. OF 6  and 4 = 12

2) Make the common denominator i.e. 12 for both the fractions.

\frac{5}{6}\times \frac{2}{2}=\frac{5\times 2}{6\times 2}=\frac{10}{12}\\\\and\\\\\frac{3}{4}\times \frac{3}{3}=\frac{3\times 3}{4\times 3}=\frac{9}{12}

so, we can see that

\frac{10}{12}>\frac{9}{12}

He needs more strawberries than banana.

ANSWERED AT 14/12/2019 - 06:19 PM


QUESTION POSTED AT 14/12/2019 - 06:19 PM

J needs 19 quarts more paint for the outside of his barn then for the inside if he uses 107 quarts in all how many gallons of paint will be used to paint the inside of the barn

19 + x = 107
x = 107 - 19 = 88 quart

Since 1 quart = 0.25 gallons
88 qt (0.25 gal/1 qt) = 22 gallons

ANSWERED AT 14/12/2019 - 06:00 PM


QUESTION POSTED AT 14/12/2019 - 06:00 PM

The amount of a radioactive isotope decays in half every year. The amount of the isotope can be modeled by f(x) = 346(one half)x and f(1) = 173. What does the 173 represent? The starting amount of the isotope The amount of the isotope after one year The rate the isotope decreases The number of years that have passed

Answer:

Option B is the correct option.

Step-by-step explanation:

If amount of a radioactive isotope decays in half every year and it can be modeled by f(x) = 346(\frac{1}{2})^{x} then we have to tell what does f(1) = 173 represent.

In the formula given (\frac{1}{2})^{x} represents the half life of the isotope and 346 is the amount of isotope taken initially.

Therefore f(1) = 173 represents the amount of isotope remained after one year.

Option B is the correct answer.

ANSWERED AT 14/12/2019 - 05:57 PM


QUESTION POSTED AT 14/12/2019 - 05:57 PM

A farm stand sold 12 ears of corn for 4$ .the farm stand sold 180 ears of corn at the same rate

To answer this first we set up a proportion and then solve. Lets do it:-

 \frac{4}{12}= \frac{x}{80}

Cross Multiply:-

80 · 4 = 320

Divide:-

420 ÷ 12 = 60

So, 180 ears of corn are for $60.

Hope I helped ya!! 

ANSWERED AT 14/12/2019 - 05:53 PM


QUESTION POSTED AT 14/12/2019 - 05:53 PM

The value of an antique car is modeled by the function V(x)=107,000(1.009)^ (2/3x) where x is the number of years since 2005. By what approximate percent rate is the value of the car increasing per year?

To get a percent rate, let the value of the car based on two consecutive years. The variable x represents a year. You can set any two numbers of year as long as they are consecutive; say x = 0 and x = 1.

Use the calculator to get instantly the values of V(x).
For V(x = 0)
V(x = 0) = 107,000(1.009)^[2/3(0)] = 107,000

For V(x = 1)
V(x - 1) = 107,000(1.009)^[2/3(1)] = 107,641

Another way of getting the percentage between two values is called the "relative change."
(107,641 - 107,000) / 107,000 = 0.0060 = 0.60%

ANSWERED AT 14/12/2019 - 05:52 PM


QUESTION POSTED AT 14/12/2019 - 05:52 PM

Describe how you regroup when you find the sum of 64+43

Here, regrouping is basically carrying. 

64+43 shown vertically would be:

  64
+43
-------
 107
4+3 is 7, so seven is in the ones place, but that's not the point.
60+40 is 100, so you regroup by carrying the one to the hundreds place.

Hope I helped!

ANSWERED AT 14/12/2019 - 05:52 PM


QUESTION POSTED AT 14/12/2019 - 05:52 PM

Which are composite or prime 9 , 2 , 15 , 21

A Prime Number can be divided evenly only by 1 or itself. It alsp must be a whole number greater than 1. Therefore, 9, 15, and 21 are composite and 2 is a prime.

ANSWERED AT 14/12/2019 - 05:51 PM


QUESTION POSTED AT 14/12/2019 - 05:51 PM

Find each percent increase from $3.49 to $3.89

Im doing this for ma unit one test tomarrow um subtract $3.89-$3.49 and then whatever you get just multiply that by a 100 because you are looking for the percent and its out of a 100 btw im in middleschool

ANSWERED AT 14/12/2019 - 05:48 PM


QUESTION POSTED AT 14/12/2019 - 05:48 PM

The product of two numbers is 713. The first number is 9 more than the second number. Which equation can be used to find x, the greater number? x(x − 9) = 713 x(x + 9) = 713 x2 − 9 = 713 x2 + 9 = 713

Let x = first number and y = second number.
The first statement is expressed as
x*y = 713
The second statement is expressed as
x = y + 9
To find x, use the second equation in terms of y, that is y = x - 9. Then substituting it to the first equation yields
x*(x - 9) = 713

ANSWERED AT 14/12/2019 - 05:46 PM


QUESTION POSTED AT 14/12/2019 - 05:46 PM

Sybrina jogged 2 miles in 30 minutes. At this rate, how far would she jog in 90 minutes?At what rate did she jog each hour?

2miles per 30min - 2 to 3
90/30=3x2=6
6miles in 90min
She was jogging @ a 1mile per 15min but each hour it was 4mile per hour

ANSWERED AT 14/12/2019 - 05:45 PM


QUESTION POSTED AT 14/12/2019 - 05:45 PM

There were 548 films released in 2011. Of these, approximately 8.75% were rated PG (parental guidance suggested). How many PG movies were released in 2011?

Given situation: There were 548 films released in 2011. Rated PG were approximately 8.75% of the released movie. Question: Find how many PG movies were released in 2011. PG means Parental guidance. Solution, => 8.75% = 8.75 / 100 = 0.0875 => Now, let’s multiply this decimal number to the total number of films released. => 548 * 0.0875 => 47.95. Round off to 50. Thus, there were approximately 50 films released that were Rated PG.

ANSWERED AT 14/12/2019 - 05:45 PM


QUESTION POSTED AT 14/12/2019 - 05:45 PM

If f(x)=8sin^6x - cos^2x. Find f'(.

F'(x) = 48(sin(x))^5*cos(x)- 2cos(x)(-sin(x))
= 48(sin(x))^5*cos(x)+ 2cos(x)sin(x)

f'(π/4)= 48(sin(π/4))^5*cos(π/4)+ 2cos(π/4)sin(π/4)=7.

The final answer is 7.

Hope this helps~

ANSWERED AT 14/12/2019 - 05:43 PM


QUESTION POSTED AT 14/12/2019 - 05:43 PM

It was estimated that the united states would need 6200 more veterinarians in 2012. The percent error was 10%. if the estimate was low,how many were actually needed

5580 veterinarians were actually needed. 

To find this you must find what is 10% of 6200. 

In math, of = multiplication

So you multiply 10% and 6200. In order to do so, you must turn the percentage into a decimal or fraction. So 0.1 x 6200

That should get you 620. However, that IS NOT your final answer, since 620 is only 10% of the total, not the amount needed.

To get the actual amount of veterinarians, you subtract 620 from 6200, and should get 5580, the final answer. 

ANSWERED AT 14/12/2019 - 05:41 PM


QUESTION POSTED AT 14/12/2019 - 05:41 PM

What is the unit rate for meters per second if a car travels 156 meters in 13 seconds

Problem: Find the Unit rate in meters per second of the given numbers. Given = A car travels 156 meters in 13 seconds Solution = So the number that we have in meters is 156 and In seconds is 13. Now, we need to find the unit rate for this. Simply divide 156 by 13 to get the value of meters per 1 second. => 156 / 13 = 12 Thus the unit rate is: => 12 meters per second

ANSWERED AT 14/12/2019 - 05:40 PM


QUESTION POSTED AT 14/12/2019 - 05:40 PM

F(x)=5x+2; g(x)=7x+4 Find sx= f(x)+g(x) Find sx= f(x)+g(x) Find p(x)= 6g(x)

S(x) = f(x) + g(x) = (5x + 2) + (7x + 4) = 12x + 6
p(x) = 6*g(x) = 6(7x + 4) = 42x + 24

ANSWERED AT 14/12/2019 - 05:39 PM


QUESTION POSTED AT 14/12/2019 - 05:39 PM

Roger Makes 70 Gallons Of Pink Paint By Mixing 21 Gallons Of Red Paint With 49 Gallons Of White Paint. What Part Of Every Gallon Is From Red Paint

This is a problem sum that has to be carefully read and understood before trying to solve it. Based on all the information's provided, the answer to the question can be easily deduced.
Quantity of pink paint made = 70 gallons
Quantity of red paint required to make pink paint = 21 gallons
Quantity of white paint required to make the pink paint = 49 gallons
Then
Quantity of red paint required to make 70 gallons of pink paint = 21 gallons
Quantity of red paint required to make 1 gallon of pink paint = (21/70) gallons
                                                                                               = 3/10 gallons
                                                                                               = 0.3 gallons
So a total of 0.3 gallons of red paint is present in every gallon of pink paint.

ANSWERED AT 14/12/2019 - 05:38 PM


QUESTION POSTED AT 14/12/2019 - 05:38 PM

Samual bought 6 notebooks for $9. at this rate, how much will he spend on 11 notebooks?

It is 16.50 because 9 divided by 6 is 1.5. so 1.5 is the unit rate. 1.5 x 11 = 16.5

ANSWERED AT 14/12/2019 - 05:36 PM


QUESTION POSTED AT 14/12/2019 - 05:36 PM

A spool of ribbon holds 6.75 meters. A craft club buys 21 spools. What is the total cost if the ribbon sells for $2 per meter?

The total cost would be $283.5

  • The given length of a spool of ribbon = 6.75 meters
  • The amount of spools a craft club buys = 21
  • The given cost of a ribbon = $2

Further Explanation

To determine the total cost of the spools of ribbon bought, then the given length of a spool of ribbon (6.75) will be multiplied by the number of spools a craft clubs (21); the resulting value finally be multiplied by the given cost of a ribbon per meter (which is $2).

Thus,

= 6.75 x 21

= 141.75

Deriving the total amount it would cost the craft club:

= 141.75 x 2 (being the cost of a ribbon per meter)

= 283.5

Therefore, the total amount it would the craft club to buy 21 spools of ribbon is $283.5

The above mathematical expression is a practical example of a number problem, and it focus mainly on Multiplication. Multiplication is a basic mathematical operation and a function of BODMAS (an order of operations).

Multiplication has to do the repeated addition of two or more numerical value to derive a final value.

LEARN MORE:

KEYWORDS:

  • 6.75 meters
  • ribbon
  • numbers
  • bodmas
  • multiplying

ANSWERED AT 14/12/2019 - 05:25 PM


QUESTION POSTED AT 14/12/2019 - 05:25 PM

His flight covered about 3610 miles in 33.5 hours. Find the unit rate in miles per hour

3610 ÷ 33.5 = 107.761194 107.76 miles per hour

ANSWERED AT 14/12/2019 - 05:24 PM


QUESTION POSTED AT 14/12/2019 - 05:24 PM

Draw to explain how you would make a ten to find 5+8

5+8=thirteen i mean 13

ANSWERED AT 14/12/2019 - 05:24 PM


QUESTION POSTED AT 14/12/2019 - 05:24 PM

Charles Lindbergh made the first solo airplane flight from New York to Paris. His flight covered about 3610 miles in 33.5 hours. Find the unit rate in miles per hour.

Charles Lindbergh made the first solo airplane flight from New York to paris. His flight covered about 3 610 miles in 33.5 hours. Let’s find the Unit Rate for this given data: => 3 610 miles is the total distance => 33.5 hours is the time Let’s divide the distance by time to get the answer => 3 610 / 33.5 => 107.8 miles per hour – this is the unit rate that Charles travelled in plane from New York to Paris

ANSWERED AT 14/12/2019 - 05:23 PM


QUESTION POSTED AT 14/12/2019 - 05:23 PM

Suppose that the function f(x)=2x+12 represents the cost to rent x movies a month from an internet movie club. Makayla now has $10. How many more dollars does Makayla need to rent 7 movies next month?

To rent 7 movies, he needs 2(7) + 12 = $26.
But he has only $10. So he needs more 26 - 10 = $16.

ANSWERED AT 14/12/2019 - 05:21 PM


QUESTION POSTED AT 14/12/2019 - 05:21 PM

The band members marched in 8 rows. There were 6 band members in each row. Explain how the fact that 5x6=30 can help you find 8x6

If you know that 5*6=30 then you know that the answer will be more than 30. So now you have to just add 6 to the number 30 three more times to get the answer that 8*6=48

ANSWERED AT 14/12/2019 - 05:17 PM


QUESTION POSTED AT 14/12/2019 - 05:17 PM