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3 years ago

Answer please.........

Mathematics

1 answer:

kozerog [31]3 years ago

4 0

I think it’s the third option

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The ratio 15:60 in simplest form

olga nikolaevna [1]

$15:60=\dfrac{15}{60}=\dfrac{15:15}{60:15}=\dfrac{1}{4}=\boxed{1:4}$

4 0

3 years ago

Read 2 more answers

For which operations is the set {–1, 0, 1} closed? Choose all answers that are correct. A. addition B. division C. multiplicatio

spayn [35]

Hello,

Addition : no because -1+(-1)=-2 not in set.
Division : no because 1/0 is not in the set :infinity
Multiplication yes: {-1,0,1}*{-1,0,1}={-1,0,1}
Substraction: No because (-1)-(1)=-2 not in set.

Answer C

5 0

3 years ago

Write as an expression and simplify

Alexus [3.1K]

Answer:

Part a) $(2m+7n)(2m-7n)$

Part b) $x^2-16xy+64y^2$

Part c) $216a^3b^6$

Part d) $(a^2-b^2)$

Step-by-step explanation:

Part a) The difference of the squares of 2m and 7n.

we know that

The difference of the squares formula is equal to

$(a^2-b^2)=(a+b)(a-b)$

substitute

$(2m)^2-(7n)^2=(2m+7n)(2m-7n)$

Part b) The square of the difference of x and 8y

The formula of the square of the difference between two numbers is equal to

$(a-b)^2=a^2-2ab+b^2$

substitute

$(x-8y)^2=x^2-2(x)(8y)+(8y)^2=x^2-16xy+64y^2$

Part c) The tripled product of 6a and b^2

we have

$(6ab^{2})(6ab^{2})(6ab^{2})=(6ab^{2})^3=(6^3)(a^3)(b^{2})^3=216a^3b^6$

Part d) The product of the sum of a and b and their difference

The expression is equal to

$(a+b)(a-b)$

The expression represent the difference of the squares between a and b

$(a+b)(a-b)=(a^2-b^2)$

7 0

3 years ago

-c>-19 solve the inequality

Katen [24]

Answer: c < 19

Step-by-step explanation:

3 0

3 years ago

Find the equation of the line that is perpendicular to y = -2x + 6 and passes though the point (-42

Illusion [34]

Answer:

Step-by-step explanation:

4 0

3 years ago