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sergij07 [2.7K]
3 years ago
10

REALLY URGENT!!!!! ANSWER FAST!!!!

Mathematics
1 answer:
lubasha [3.4K]3 years ago
5 0

Answer:

if am sure it's A

Step-by-step explanation:

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The high school has 23 teachers and 575 students what is the ratio of teachers to students
Dennis_Churaev [7]

Answer:

1:25

Step-by-step explanation:

if you divide 575 by 23 you get 25, therefore there are 25 students per 1 teacher

8 0
3 years ago
Simplify : (√ + √ ) (√ − √) ( + )( 2 + 2 )
jek_recluse [69]

(\sqrt{x}+\sqrt{y})(\sqrt{x}-\sqrt{y})(x+y)(x^2+y^2)\\\\=[(\sqrt{x})^2-(\sqrt{y})^2](x+y)(x^2+y^2)\\\\=(x-y)(x+y)(x^2+y^2)\\\\=(x^2-y^2)(x^2+y^2)\\\\=(x^2)^2-(y^2)^2\\\\=x^4-y^4


Used:\\\\(\sqrt{a})^2=a\\\\(a-b)(a+b)=a^2-b^2\\\\(a^n)^m=a^{nm}

6 0
3 years ago
Express the following linear equations in the form ax+by+c= 0 and indicate the values of a, b and c in each case: (1) y = x/5​
EleoNora [17]

Answer:

Did the question get cut off?

a = -(1/5)

b = 1

c = 0

Step-by-step explanation:

y = x/5 may be rewritten as y = (1/5)x

y = (1/5)x

y - (1/5)x = 0

- (1/5)x + y + 0 = 0

   ax  +   by   + c = 0

a = -(1/5)

b = 1

c = 0

8 0
2 years ago
What is the greatest common factor of 14 and 35
-BARSIC- [3]
14|2\\.\ 7|7\\.\ 1|\\\\14=2\times\boxed7\\\\35|5\\.\ 7|7\\.\ 1|\\\\35=5\times\fbox7\\\\LCD(14;\ 35)=\boxed7
8 0
3 years ago
Read 2 more answers
Which expression is equivalent to
nirvana33 [79]

For this case, we must find an expression equivalent to:

\frac {-9x ^ {- 1} y ^ {- 9}} {- 15x ^ 5y ^ {- 3}}

By definition of power properties we have:

a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}

Rewriting the previous expression we have:

The "-" are canceled and we take into account that:

\frac {9} {15} = \frac {3} {5}

So:

\frac {3} {5x^5 * x ^ 1 *y ^ 9* y ^ {- 3}} =

According to one of the properties of powers of the same base, we must put the same base and add the exponents:

\frac {3} {5x ^ {5 + 1} * y ^ {9-3}} =\\\frac {3} {5x ^ 6 * y ^ 6}

Answer:

\frac {3} {5x ^ 6 * y ^ 6}

Option B

3 0
3 years ago
Read 2 more answers
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