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skad [1K]
3 years ago
11

PLS HELP. I dont understand math

Mathematics
1 answer:
Anton [14]3 years ago
4 0

Answer:

a) 2 + 1 = 3

   4 + 2 = 6

   6 + 3 = 9

b) Yes

c) Yes, since you are adding b to two b, which results in 3b

Step-by-step explanation:

Hope that helps!

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28 students in the class 75% pass how many students pass
SashulF [63]

Answer:

21 students pass

Step-by-step explanation:

Firstly, you can set up the problem into an equation where the variable X would equal the number of students passing. You put X over the total number of students in the class, turning it into a fraction, then set it equal to the fraction  \frac{75}{100} (which is 75% represented as a fraction).

\frac{X}{28} = \frac{75}{100}

The fraction \frac{75}{100} can be simplified, because 75 and 100 are both multiples of 25, so after canceling out the 25s you would be left with \frac{3}{4}.

\frac{X}{28} = \frac{3}{4}

Next, you use the process of cross multiplication which is essentially just multiplying the denominators of both fractions (which would be 28 and 4 in this case) to each side of the equation.

\frac{X}{28} * 28 * 4 = \frac{3}{4} * 4 * 28

The denominators cancel out leaving you with a simple equation to simplify.

4* X =  3 * 28

4X = 84

Finally, divide both sides by four in order to isolate the variable.

\frac{4X}{4} = \frac{84}{4}

X = 21.

5 0
3 years ago
Which term best describes the graph of yy = x - 1
dimaraw [331]

Answer:

C

Step-by-step explanation:

Its C because its x (a variable) and is costanly changing

4 0
3 years ago
What’s the error and how can I correct it number 24.
Aloiza [94]

The error is that 9 shouldnt be written as nine it should be written as 3x3 or 3^2. So the answer should be 2^3 x 3^2 because 9 can be divided into even more prime factors of 72.

4 0
3 years ago
Read 2 more answers
100 Points!!!!!!!!!
artcher [175]

Answer:

its u=(-2,1)

Step-by-step explanation:

8 0
3 years ago
Sin B =
Vika [28.1K]

Answer:

12/13


Step-by-step explanation:

sin can be remembered by opposite over hypotenuse.

the length of the side opposite to angle B is 12, and the hypotenuse is 13. therefore, sin B will be 12/13.

4 0
3 years ago
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