Whats the percent increase from 20 students to 30 students rounded to the nearest percent

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

Answered by admin AT 14/12/2019 - 05:40 PM

Given Situation: What is the percent increase from the 20 students to the 30 students. Solution: => Let’s find how many percent did it increase. Let’s have 20 as the first total number of the students in the first counts. => Then it became 30 students, let’s find out how many students added. => 30 – 20 = 10, there are 10 students added 10 is 50% of 20, thus, 50% added to the number of students. And that makes it 30 as the total count.
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Related questions

Find the quotient. (6x 2 + 23x + 20) ÷ (5 + 2x) 3x - 4 3x + 4 3x +19

\frac{6x^{2} + 23x + 20}{2x + 5} = \frac{6x^{2} + 15x + 8x + 20}{2x + 5} = \frac{3x(2x) + 3x(5) + 4(2x) + 4(5)}{2x + 5} = \frac{3x(2x + 5) + 4(2x + 5)}{2x + 5} = \frac{(3x + 4)(2x + 5)}{2x + 5} = 3x + 4

The answer is B.

ANSWERED AT 18/01/2020 - 01:13 PM


QUESTION POSTED AT 18/01/2020 - 01:13 PM

Ms. Chang has 24 students in her class, and 6 of them are boys. What is the ratio of boys to girls?

The total number of students is 24 and the total number of boys is 6, therefore

 

Number of girls = 24 – 6 = 18

Therefore the ratio of the boys to girls is

 

Number of boys/ number of girls = 6/18 ~ 1/3

 

The ratio suggests that there is 1 boy for every 3 girls  

ANSWERED AT 18/01/2020 - 01:13 PM


QUESTION POSTED AT 18/01/2020 - 01:13 PM

A lizard needs to stay a safe distance from a cactus. The diameter of the cactus is 12 inches. If the lizard is 8 inches from a point of tangency, find the direct distance between the lizard and the cactus (x). If necessary, round to the hundredths place.

Answer:

10 in

Step-by-step explanation:

We are given that

Diameter of cactus=d=12 in

Radius of cactus=\frac{d}{2}=\frac{12}{2}=6 in

Distance of lizard from point of tangency=8 in

We have to find the direct distance between lizard and cactus.

In triangle OAB,

OA=6 in

AB=8 in

Pythagorous theorem: (Hypotenuse)^2=(base)^2+(perpendicular\;side)^2

Using pythagorous theorem

OB^2=(6)^2+(8)^2=100

OB=\sqrt{100}=10 in

Hence, the direct distance of lizard from cactus=10 in

ANSWERED AT 18/01/2020 - 01:11 PM


QUESTION POSTED AT 18/01/2020 - 01:11 PM

20% of the people left and 76 remain, how many people were there?

Percent porportion 76 over x and 20 over 100  mutply 76x100 then divide by 20 x= youre anwser

ANSWERED AT 18/01/2020 - 01:09 PM


QUESTION POSTED AT 18/01/2020 - 01:09 PM

Whats the complete factored form of the polynomial 5b-15c???

All you need to do is pull out a 5 :)

5(b-3c)

ANSWERED AT 18/01/2020 - 01:09 PM


QUESTION POSTED AT 18/01/2020 - 01:09 PM

To solve the equation - 4 = 20, you would first add 4 to each side and then divide each side by 8. True False

False, just divide 20 by -4 to get correct answere.

ANSWERED AT 18/01/2020 - 01:08 PM


QUESTION POSTED AT 18/01/2020 - 01:08 PM

Triangle ABC has side lengths 18,24, and 30. Do the side lengths form a Pythagorean triple? Yes or No?

Answer:  Yes, the side lengths form a pythagorean triple.

Step-by-step explanation:  Given that the side lengths of triangle ABC are as follows :

AB=18,~~BC=24,~~CA=30.

We are to check whether the side lengths form a pythagorean triple or not.

For making a pythagorean triple, the side lengths must satisfy the following :

AB^2+BC^2=CA^2.

We have

AB^2=18^2=324,\\\\BC^2=24^2=576,\\\\CA^2=30^2=900.

So,

AB^2+BC^2=324+576=900=CA^2.

Thus, the side lengths will form a pythagorean triple.

ANSWERED AT 18/01/2020 - 01:06 PM


QUESTION POSTED AT 18/01/2020 - 01:06 PM

Several people were polled regarding their favorite type of dessert. They were asked to choose one of the following: ice cream, cake, candy, or cookies. 10% cookies, 30% candy, 25% cake, 35% ice cream. If forty people were questioned, how many of them said they prefer ice cream

So notice the total number of people is 40, we need to find the number that likes ice cream 

so simply convert the 35% into a decimal (0.35) then multiply it by 40 

40 x .35 = 14 people

ANSWERED AT 18/01/2020 - 01:04 PM


QUESTION POSTED AT 18/01/2020 - 01:04 PM

Andrew estimated the weight of his dog to be 60 lb. The dog’s actual weight was 68 lb. What was the percent error in Andrew’s estimate? Round your answer to the nearest tenth of a percent.

Correct - wrong    percentage
-------------------- = ---------------
       wrong                100
68 - 60      x
--------- = ----
   60       100
 8       x
---- = ----
60    100
800    60x
----- = ----
 60     60
13.3% = x

ANSWERED AT 18/01/2020 - 01:04 PM


QUESTION POSTED AT 18/01/2020 - 01:04 PM

All 60 students in the seventh grade must choose a Fall sport in which they will participate. 1/5 of them choose volleyball, 40% of them choose soccer, and the remainder choose softball. How many students choose softball?

1/5 = 20%
100%-40%-20%=40%
40% chose softball
40% of 60:
60 x 0.4= 24 students chose softball

ANSWERED AT 18/01/2020 - 01:00 PM


QUESTION POSTED AT 18/01/2020 - 01:00 PM

Mr. Ahmed has 31 students in his class. There are 14 boys and 17 girls.

What or where is the question?


ANSWERED AT 18/01/2020 - 12:56 PM


QUESTION POSTED AT 18/01/2020 - 12:56 PM

A pair of inline skates, regularly priced at $180, is now on sale at a 30% discount. What is the sale price of the skates?

So you divide it by 10 to get $18 (10%)
Then you do 18*3 = 54 (This is 30%)
Then you minus this from $180: 180-54= $126

ANSWERED AT 18/01/2020 - 12:54 PM


QUESTION POSTED AT 18/01/2020 - 12:54 PM

Which expression is equivalent to 8a + 20? A. 4(2a + 20) B. 4(2a + 5) C. 4(4a + 16) D. 4(4a + 5)

B since 4 times 2 is 8 and 4 times 5 is 20

ANSWERED AT 18/01/2020 - 12:54 PM


QUESTION POSTED AT 18/01/2020 - 12:54 PM

Andrew bought 3 baseball cards for $240. After a few months, he got an offer from his friend Jack to buy the first card for double its original value, along with either the second or third card. Andrew decided to sell the first card (at double its original value) along with the second card (at its original price) and got $320 for it. Or, selling the first card (at double its original value) card along with the third card (at its original price) would have only got him $280. What were the original prices for each of the 3 baseball cards? A-(80, 120, 40) B-(80, 130, 30) C-(130, 90, 20) D-(120, 80, 40)

Answer:

Option D. (120, 80, 40)

Step-by-step explanation:

Let the cost of 3 baseball cards bought by Andrew are $x, $y and $z.

Now we will form the equations to find the unknown values of x, y, and z.

Statement 1 - Andrew bought 3 baseball cards for $240

Equation will be (x + y + z) = 240 --------(1)

Statement 2 - Jack offered a deal to buy the first card for the double of its original value along with the second card for $320.

Equation will be 2x + y = 320 --------(2)

Statement 3 - Jack offered another deal to buy first card for the double of its original value along with third card for $280

Equation formed 2x + z = 280 ------(3)

Now we can solve these equations to get the values of x, y and z.

From equation 2

y = 320 - 2x

From equation 3

z = 280 - 2x

Now we can replace the values of y and z in equation number 1.

Equation 1 becomes after substitution of y and z values

x + (320 - 2x) + (280 - 2x) = 240

Now we will group the similar terms

(x - 2x - 2x) + (320 + 280) = 240

-3x + 600 = 240

-3x = 240 - 600

-3x = - 360

x = \frac{360}{3}

x = 120

Now  we put x = 120 in the value of y

y = 320 - 2x

y = 320 - 2×120

  = 320 - 240

  = 80

Similarly we put the value x = 120 in value of z

z = 280 - 2x

  = 280 - 2×120

  = 280 - 240

  = 40

So the original values of 3 baseball cards are (120, 80, 40)

Option D. will be the answer.

ANSWERED AT 18/01/2020 - 12:53 PM


QUESTION POSTED AT 18/01/2020 - 12:53 PM

Enrollment in a photography class increased from 25 to 35 students. What was the percent of increase in enrollment?

Answer

40%

Explanation

A parentage value is a value that has been compared to 100.

Percentage = (change in the value)/(the original value) × 100%

                   = (35-25)/25 × 100%

                    = 10/25 × 100%

                   = 40%

ANSWERED AT 18/01/2020 - 12:49 PM


QUESTION POSTED AT 18/01/2020 - 12:49 PM

What is 35 percent of 70

35 Percent of 70 is 24.5
We assume, that the number 70 is 100% - because it's the output value of the task. We assume, that x is the value we are looking for. If 70 is 100%, so we can write it down as 70=100%. We know, that x is 35% of the output value, so we can write it down as x=35%. Now we have two simple equations: 1.)70=100% 2.)x=35%where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that: 70/x=100%/35% Now we just have to solve the simple equation, and we will get the solution we are looking for.

ANSWERED AT 18/01/2020 - 12:47 PM


QUESTION POSTED AT 18/01/2020 - 12:47 PM

Convert 1.05 to a percent

Answer:

105%.

Step-by-step explanation:

We are asked to convert 1.05 to a percent.

To convert a decimal to percent, we simply multiply the decimal number by 100 and add a percentage sign.

Let us multiply 1.05 by 100.

\text{1.05 to percentage}=1.05\times 100\%

\text{1.05 to percentage}=105\%

Therefore, 1.05 as a percent would be 105%.

ANSWERED AT 18/01/2020 - 12:44 PM


QUESTION POSTED AT 18/01/2020 - 12:44 PM

Jeff has to pay his car insurance annually. If his total bill is $744, how much money should he set aside each month for car insurance? Round to the nearest dollar.

Since Jeff is paying an annual amount of $744 he needs to set aside 12 monthly payments for the year. To figure out how much each payment would be you divide the total for the year 744 by the number of months 12. $744/12=$62 Each monthly payment would be $62

ANSWERED AT 18/01/2020 - 12:41 PM


QUESTION POSTED AT 18/01/2020 - 12:41 PM

Sandy and Alex are married, with no dependents. They wish to file a joint tax return. Both of them work, but their combined salaries only put them at a slightly above-average income. They would also like to deduct interest paid on their student loans. Recommend an appropriate 1040 form for Sandy and Alex to fill out. a. 1040 b. 1040-EZ c. 1040-2 d. 1040-A

The correct answer is:

d.) 1040-A

Explanation:

A 1040-EZ is used if you are single or married filing jointly, make less than $100,000, and have no adjustments to your income. Sandy and Alex wish to deduct student loan interest, so they cannot use this form.

The next one is the 1040-A. This one can be used to deduct student loan interest, so this would be the one they should use. It is the simplest form that will allow them to claim what they wish to claim.

ANSWERED AT 18/01/2020 - 12:37 PM


QUESTION POSTED AT 18/01/2020 - 12:37 PM

Laurie is trying to stay within 10 feet of her current diving depth of –30 feet (with regard to sea level) so that the light is still good but she can be close to the sea life during her scuba dive. Which two equations can be used to find the minimum and maximum depths Laurie wants to stay between? A. x + 30 = 10 and x + 30 = –10 B. x – 30 = 10 and x – 30 = –10 C. x + 10 = 30 and x + 10 = –30 D. x – 10 = 30 and x – 10 = –30

ANSWER
A. x + 30 = 10 and x + 30 = –10

EXPLANATION
If x represents the depth of Laurie at a given moment, then the distance between his current depth and -30 feet is given by

   | x - (-30) |

which can be simplifed into

   | x + 30 |

We use absolute value because distance cannot be negative.

Laurie must stay within 10 feet. Therefore, the distance x is from -30 feet has to be equal to 10 to find the maximum and minimum depths that Laurie can stay between:

   | x + 30 | = 10

When we solve this absolute value equation, we work with two cases.

Case 1: When x + 30 is positive, then |x+30| = x+30 (no change) and we have the equation
   x + 30 = 10

Case 2: When x + 30 is negative, then |x+30| = -(x+30) so as to force the distance into a positive number. Then this gives us the equation
   -(x+30) = 10
which we can multiply both sides by -1 to get
   x + 30 = -10

ANSWERED AT 18/01/2020 - 12:35 PM


QUESTION POSTED AT 18/01/2020 - 12:35 PM

Gertrude takes out a $5,500 subsidized Stafford loan, which must be paid back in ten years. Gertrude will graduate four years after taking out the loan. If the loan has an interest rate of 6.8%, compounded monthly, and Gertrude makes monthly payments, how much interest will she pay by the time the loan is repaid? Round all dollar values to the nearest cent.

Answer:

Interest paid = $2,095.30

Step-by-step explanation:

Gertrude takes out a $5,500 subsidized Stafford loan.

The loan has an interest rate of 6.8%, compounded monthly.

Present Value = $5,500.

Time period = 10 years. So N = 10 x 12 = 120 months.

Interest rate, R = 6.8/1200 = 0.005666667

Then PV = Pmt * [1 - (1+R)^(-N)]/(R)

5500 = Pmt * [1 - (1+0.005666667)^(-120)]/(0.005666667)

Pmt = $63.29418157

She made total repayment = 63.29418157 x 120 = $7,595.30

Interest paid = Total repayment - Loan Principal = $7,595.30 - $5,500 = $2,095.30

Interest paid = $2,095.30

ANSWERED AT 18/01/2020 - 12:34 PM


QUESTION POSTED AT 18/01/2020 - 12:34 PM

A survey showed that 25% of students chose cola as their favorite soda; 40% chose orange; and the other 35% chose grape. If you survey 32 students from the same group, how many will choose cola? 16 people 8 people 12 people 25 people

A survey showed that 25% of students chose cola as their favorite soda;
 40% chose orange
 and the other 35% chose grape.
There are 32 students fromthe same group that took the survey. Let's find out how many will choose cola.
=> 32 * 0.25 = 8 Therefore, there are 8 people that chooses soda as their favorite drink.

ANSWERED AT 18/01/2020 - 12:21 PM


QUESTION POSTED AT 18/01/2020 - 12:21 PM

Round 97.081 to the nearest tenth. A : 97 B : 97.1 C : 97.8 D : 97.08

B 97.1
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ANSWERED AT 18/01/2020 - 12:18 PM


QUESTION POSTED AT 18/01/2020 - 12:18 PM