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lawyer [7]
3 years ago
5

The cost of cementing 30 m² of floor area is $810. How much will it

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
6 0

Answer:

The answer is 1485 m^2

Step-by-step explanation:

27 per m^2 so 27 times 55 = 1485 m^2

Dafna11 [192]3 years ago
5 0

Answer:

$1485 cost to cement 55m^2 of floor area. You should need to know how much will it cost 1m^2, so then you can solve the area you were asked for.

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A liquid mixture of 56 ounces contains 14 ounces of sugar and the rest is water. What is the ratio of swar to water
Pachacha [2.7K]

Step-by-step explanation:

Ounces of water = 56 - 14 = 42 ounces

Ratio of sugar to water

56 : 42

8 : 6

4 : 3

6 0
2 years ago
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A class is made up of 10 boys and 5 girls. Half of the boys wear glasses. A student is selected at random from this class. What
saveliy_v [14]

Answer:

  1/3

Step-by-step explanation:

Of the 15 students in the class, 5 are boys with glasses. The probability of selecting one at random is 5/15 = 1/3.

7 0
3 years ago
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Television and radio stations use four call letters starting with w or​ k, such as wxyz or krld. assuming no repetitions in the
katen-ka-za [31]
Here we are dealing with combinations without repetitions.

Let's write the form of a name.
For names starting with W:
W _ _ _
For names starting with K:
K _ _ _

We are allowed to use only lettrs from F to X. That's total of 19 letters. We are not allowed to repeat letters so for each letter we can choose from one less available letters.

Let's start with names begining with W. We will write how man possible letters we can choose from.
W 18 17 <span>16
</span>At second possition we can choose from 18 letters because we must not repeat letters and W is placed in front of X in alphabet.
At third position we can choose from 17 letters becasue we already chose two of 19 possible letters.
At fourth position we can choose from 16 letters becasue we already chose three of 19 possible letters.
To calculate total number of possible names we need to multiply these numbers:
1 * 18 * 17 * 16 = 4896

Same calculation can be done for names starting with K. We would get same number as solution.

Total number of possible names starting with W or K is 4896 + 4896 = 9792
4 0
3 years ago
Isolate a variable in each system. You may need to use the distributive property to simplify the equation. Show your work.
expeople1 [14]

Answer:

1.  x=-7/3 + 4y/3

2. x= 6- 3y/4

Step-by-step explanation:

to isolate the variable you simply solve for it by moving all the terms which don't contain x to the right by multiplying, subtracting, adding, and dividing

5 0
3 years ago
line AB and line BC form a right angle at point B. If A = (-3, -1) and B = (4, 4), what is the equation of line BC ?
Ymorist [56]
Since B= (4,4) the BC= (4, 5)
8 0
3 years ago
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