120 books increased by 55%

Answers

Answer 1
Answer:

 To find 55% of 120 books, multiply 120 x .55  
Then add that answer to the original 120.

120 + 55% = 186


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find the percentage decrease in the area of triangle if each of its side is halved. (by using heron\'s formula)

What is 7=b/11 what is b

Answers

7 = b/11

11 × 7 = 77

Answer:

b = 7
7=b supra 11 <=>7×11=b×1<=>77=b<=>b=77

deshawn deposited $6500 into a bank account that earned 11.5percent simple interest each year . he earned $4485 in interest befour closing the account. if no money was deposited into or withdrawn from the account, for how many years was the money in the account round the answer to the nearest whole year

Answers

Interest equation,,, I=prt,,4485=6500*0.115 t...can you solve for t??

A school has 679 bottles of water for sports day.They buy another 8 packs of bottled water.
Each pack contains 6 bottles.
How many bottles of water do they have in total?

Answers

The school starts off with 679 bottles of water. 

They then buy 8 packs with 6 bottles in each: 
8 X 6 = 48

To calculate the total you must add the amount of bottles they originally had to the amount of purchased bottles:
679 + 48 = 727

The school therefore has 727 bottles of water in total. 

727 because first you need to find out the amount which is 4*6 then you need to add it together 679+48 check it over just in case

A certain regular polygon has sides of length 10 cm; its apothem is 12.1 cm. The polygon’s area is 484 cm². How many sides does the polygon have?

You must show your work to receive credit.

Answers

Given:
Area of polygon = 484 cm²
apothem 12.1 cm
sides of length = 10 cm
no. of sides = x

Area of a regular polygon = 1/2 perimeter * apothem
484 cm² = 1/2 * (10cm * x) * 12.1cm
484 cm² = 6.05cm * 10cm * x
484 cm² = 60.5 cm² * x
484 cm² ÷ 60.5 cm² = x
8 = x

The polygon is an OCTAGON. It has 8 sides.

Perimeter = 10 cm * 8 sides = 80 cm

484cm² = 1/2 * 80cm * 12.1 cm
484cm² = 1/2 * 968 cm²
484 cm² = 484 cm²

What is the angle of B. Round your answer to the nearest hundredth​

Answers

Answer:

B = 53.13

Step-by-step explanation:

Since this is a right triangle, we can use the tan function

tan B = opposite side/ adjacent side

tan B = 4/3

Take the inverse tan of each side

tan ^-1 (tan B) = tan^-1 (4/3)

B = 53.13010235

To the nearest hundredth

B = 53.13

Can some one help me Please?Tracy wants to find out if her math test scores are related to the
number of hours she studies for the tests

which is the dependent variable in the experiment?

A. hours studied

B. test scores

Please let me know in the comments

Answers

In independent variable would be the hours studied, because it doesn't depend any anything. The dependent variable would be the test scores, as they all tie into each other. 

Answer: B. test scores
B Is the correct answer ,  Because you have to study for the test in order to  take the test , so her studying will show up on her test. its the dependent variable

dose this help?