MATHEMATICS HIGH SCHOOL

What number is 22.5% of 120?

Answers

Answer 1
Answer: It is 27 22.5% of 120 is 27!

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Sarah solves the equation as shown.2(x + 3) = 8 1. 2x + 6 = 8 2. 2x = 2 3. x = 1 In which step did Sarah use the distributive property?123
Please solve this -2x + 12y - 4
In a certain math class, it is known that 18 students LOVE math review, and 5 students dislike math review. The teacher randomly selects three students from the class. What is the probability that all three students love math review?
What is the area of the polygon given below? Please explain how you got the answer

Selma's class is making care packages to give to victims of a natural disaster. Selma packs one box in 5 minutes and has already packed 12 boxes. Her friend Trudy packs one box in 7 minutes and has already packed 18 boxes. How many more minutes does each need to work in order to have backed the same number of boxes?

Answers

Every 35 minutes Selma packs 7 boxes, while Trudy packs 5 boxes.

Thus every 35 minutes Selma decreases the difference between them in 2 boxes.

Since the original difference was 6 boxes, Selma needs 3 times 35 minutes, or 105 minutes, in all, to catch Trudy.

Answer- 105 minutes, or 1 hour and 45 minutes.

What is 14x - 13 = 9x + 1

Answers

14x - 13 = 9x + 1
- 9x         - 9x
  5x - 13 = 1
      + 13 + 13
         5x = 14
          5      5
           x = 2.8

Find the area of the circle. Diameter of a circle=5.2cm. Then what is the area of a circle?

Answers

Answer:

21.24cm
Radius is 2.6 and we know formula of a circle is pi times radius squared so radius squared is 6.76 and we multiply that by pi giving us 21.24cm

There were 15 cars and 25 trucks in the parking garage. what is the ratio of cars to total vehicles

Answers

15:25 = 3:5
simply divide 15 and 25 both by 5 to get 3:5.

How do you estimate the following question

32 x 43

Answers

Just round it off to the nearest ten or five, like 30*45.Or, round them both to the nearest ten, like 30*40.But, the first one is more accurate.

You want to use a coordinate proof to prove that midsegment DE of ABC is parallel to AC and half the length of AC. Which is the best first step?

Answers

Answer:

the third one answer choice

Step-by-step explanation:

⊕ Place the triangle on a coordinate grid such that vertex A is at the origin, and segment AC lies on the x-axis.

You will be able to see the length of segment AC and length of segment DE, and also will be able to see if AC║DE.

Other Questions
When navigating the maze, the robot will only need to go north, south, east, and west. It can be useful to use the complex plane to represent these directions. When using the complex plane this way, we use numbers such that their magnitude is equal to 1. If we let the value i represent the robot facing due north, what values represent the robot facing east, south, and west?
2) A product originally costs $125. If the product goes on sale for 20% off, and then goes on sale for an additional 30% off, what is the price of the product? A.      $62.50  B. $70  C.   $65  D.    $90  3) If you pay $22.90 for a DVD that includes a 7% sales tax, what is the price of the DVD before the sales tax? A.      $21.40    B.  $21.30  C.      $21.50  D.    $20.95  
At a carnival, food tickets cost $2 each and ride tickets cost $3 each. A total of $1,240 was collected at the carnival. The number of food tickets sold was 10 less than twice the number of ride tickets sold.The system of equations represents x, the number of food tickets sold, and y, the number of ride tickets sold. 2x + 3y = 1240 x = 2y – 10 How many of each type of ticket were sold? 180 food tickets and 293 ride tickets 180 food tickets and 350 ride tickets 293 food tickets and 180 ride tickets 350 food tickets and 180 ride tickets
A recipe for a vegetable dish contains a total of 924 calories the dish to serve six people how many calories are in each serving