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I am Lyosha [343]
3 years ago
13

Helpppppppppppppppppppp

Mathematics
2 answers:
Genrish500 [490]3 years ago
5 0

Answer:

A

Step-by-step explanation:

(I hope it is right)

Masteriza [31]3 years ago
3 0

Answer:D

Step-by-step explanation:

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one teacher want to give each student 4/5 of a slice of pizza, if the teacher has 4 slices of pizza, then how many students will
GuDViN [60]

Answer:

The answer is 5 students.

Step-by-step explanation:

This problem is a division problem.

To solve, divide 4 by 4/5.

There is a strategy for this- Keep, Change, Flip.

Keep the dividend like it is, which is 4 or 4/1.

Change the division to multiplication.

And flip the divisor- 4/5 to 5/4.

When you multiply, you should get 20/4.

Simplify by dividing 20 by 4.

20 divided by 4 is 5.

So the answer is 5 students

6 0
3 years ago
Write each fraction as a sum or difference
vekshin1

a)\\\dfrac{17+5n}{4}=\dfrac{17}{4}+\dfrac{5}{4}n\\\\b)\\\dfrac{8-9x}{3}=\dfrac{8}{3}-\dfrac{9}{3}x=\dfrac{8}{3}-3x\\\\c)\\\dfrac{4y-12}{2}=\dfrac{4}{2}y-\dfrac{12}{2}=2y-6\\\\d)\\\dfrac{25-8t}{5}=\dfrac{25}{5}-\dfrac{8}{5}t=5-\dfrac{8}{5}t\\\\e)\\\dfrac{18x+51}{17}=\dfrac{18}{17}x+\dfrac{51}{17}=\dfrac{18}{17}x+3

5 0
3 years ago
Binomial Theorem, proof
IrinaVladis [17]

It follows from the definition of the binomial coefficient:

\dbinom nr=\dfrac{n!}{r!(n-r)!}

So we have

(n+1)\dbinom nr=(n+1)\dfrac{n!}{r!(n-r)!}=(r+1)\dfrac{(n+1)!}{(r+1)!(n-r)!}

That is, (n+1) gets absorbed into the numerator's factorial, and we introduct (r+1) into the denominator. Now, (n+1)-(r+1)=n-r, so we get

(n+1)\dbinom nr=(r+1)\dfrac{(n+1)!}{(r+1)!((n+1)-(r+1))!}=(r+1)\dbinom{n+1}{r+1}

as required.

4 0
3 years ago
4x^2 - 35x - 99 / x^2 - 5x - 66 Simplify this expression and state any restrictions on the variable
arsen [322]
\frac{4x^{2} - 35x - 99}{x^{2} - 5x - 66} = \frac{4x^2 - 44x + 9x - 99}{x^{2} - 11x + 6x - 66} = \frac{4x(x) - 4x(11) + 9(x) - 9(11)}{x(x) - x(11) + 6(x) - 6(11)} = \frac{4x(x - 11) + 9(x - 11)}{x(x - 11) + 6(x - 11)} = \frac{(4x + 9)(x - 11)}{(x + 6)(x - 11)} = \frac{4x + 9}{x + 6}
6 0
3 years ago
Read 2 more answers
Why do math exist in school?​
EleoNora [17]

Answer: I have no idea

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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