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2 years ago

6

One Algebra question. Thank you :D

2 answers:

Salsk061 [2.6K]2 years ago

5 0

The answer would be C because the coefficients are both perfect squares and when you subtract the exponents (6 - 4), it turns up to be an even number. (difference of exponents have to be an even number or zero)

vesna_86 [32]2 years ago

3 0

A^2 - b^2 ...difference of squares

so
9m^4 - 49n^6 = (3n^2)^2 - (7n^3)^2

answer
C. 9m^4 - 49n^6

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Dima020 [189]

The answer is D.

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This figure has 2 sets of parallel sides which makes it a parallelogram.

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And this figure has both 4 equal sides and 4 equal angles which makes it a square.

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2 years ago

The ratio of boys to girls in a school is 5:4. if there are 500 girls , how many boys are there in the school?

lana [24]

Answer:

The number of boys in the school is;

$625$

Explanation:

Given that the ratio of boys to girls in a school is 5:4;

$5\colon4$

And there are 500 girls in the school.

The number of boys in the school will be;

$\begin{gathered} \frac{B}{G}=\frac{5}{4} \\ G=500 \\ B=\frac{5\times G}{4}=\frac{5\times500}{4} \\ B=625 \end{gathered}$

Therefore, the number of boys in the school is;

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3 0

5 months ago

Can someone help me with this :(

julia-pushkina [17]

Answer:

9

Step-by-step explanation:

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5 0

2 years ago

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A bag contains 2 black balls, 4 yellow balls and 4 white balls. Event A is defined as drawing a white ball on the first draw and

arsen [322]

Answer: $P(B|A)=\dfrac{4}{9}$

Step-by-step explanation:

Given: A bag contains 2 black balls, 4 yellow balls and 4 white balls.

Event A is defined as drawing a white ball on the first draw.

Event B is defined as drawing a black ball on the second draw.

P(B|A) is expressed as the conditional probability of occurring B given that A.

i.e. it is the probability of happening B where A is already happended.

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Then, $P(B|A)=\dfrac{4}{9}$

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Karolina [17]

Answer:

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2 years ago