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3 years ago

9

True or False: Angles. Only 3 questions you need to answer! Please help :/

1 answer:

spayn [35]3 years ago

5 0

Answer:

false in all cases

Step-by-step explanation:

1) they are not supplementary ,cuz sum is not 180

2) false,cuz sum is not 90°

3) measure of AOB is not 60° and OC not bisecting them

4) measure of AOB is not 60° and OB not bisectijg AOC

✌️:)

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Given the expression:

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2 years ago

Factor completely 3ab − 5ax + 9b − 15x.

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Step-by-step explanation: We are given to factorise some quadratic expressions.

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The factorisation is as follows:

We have

$(1)~3ab-5ax+9b-15x\\\\=a(3b-5x)+3(3b-5x)\\\\=(3b-5x)(a+3).$

Thus, option (B) $(3b-5x)(a+3)$ is correct.

$(2)~5x(x+3)+6(x+3)\\\\=(x+3)(5x+6).$

Thus, option (B) $(x+3)(5x+6)$ is correct.

$(3)~2cb+7cx+2b+7x\\\\=c(2b+7x)+1(2b+7x)\\\\=(2b+7x)(c+1).$

Thus, option (B) $(2b+7x)(c+1)$ is correct

$(4)~21x^3+35x^2+9x+15\\\\=7x^2(3x+5)+3(3x+5)\\\\=(3x+5)(7x^2+3).$

Thus, option (D) $(3x+5)(7x^2+3)$ is correct.

$(5)~9xy+36x-10y-40\\\\=9x(y+4)-10(y+4)=(y+4)(9x-10).$

Thus, option (C) $(y+4)(9x-10)$ is the correct option.

$(6)~14bx^2-7x^3-4b+2x\\\\=7x^2(2b-x)-2(2b-x)\\\\=(2b-x)(7x^2-2).$

Thus, option (B) $(2b-x)(7x^2-2)$ is the correct option.

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Thus, option (D) $(4y+9)(x+6)$ is correct.

4 0

3 years ago