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3 years ago

Product of 3a2b and 5a2–4ab + 2b2is

Mathematics

1 answer:

hodyreva [135]3 years ago

4 0

Answer:

$15a^4b-12a^3b^2+6a^2b^3$

Step-by-step explanation:

$(3a^{2}b)(5a^{2}-4ab+2b^{2})\\ =15a^4b-12a^3b^2+6a^2b^3$

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Solve for x. round to the nearest ten

svetoff [14.1K]

Answer:

499

Step-by-step explanation:

8 0

3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

____ [38]

Answer: $\bold{(D)\ a_n=7n+10}$

Step-by-step explanation:

The recursive rule for an arithmetic sequence is: $a_n=a_{n-1}+d$

So, we know that d = 7. It is given that $a_1=17$

The explicit rule for an arithmetic sequence is: $a_n=a_1+d(n-1)$

$a_n=17+7(n-1)\\\\.\quad=17+7n-7\\\\.\quad=7n+10$

6 0

3 years ago

What is the solution to this system of linear equations? 2x + y = 1 and 3x - y = -6

PSYCHO15rus [73]

Answer:

(- 1, 3 )

Step-by-step explanation:

Given the 2 equations

2x + y = 1 → (1)

3x - y = - 6 → (2)

Adding the 2 equations term by term eliminates the y- term, that is

5x = - 5 ( divide both sides by 5 )

x = - 1

Substitute x = - 1 into either of the 2 equations and evaluate for y

Substituting into (1)

2(- 1) + y = 1

- 2 + y = 1 ( add 2 to both sides )

y = 3

Solution is (- 1, 3 )

4 0

3 years ago

If the length of side of square is 3x-y,what is the area of the square in terms of x.and y?

shtirl [24]

Answer:

$\large\boxed{A=9x^2-6xy+y^2}$

Step-by-step explanation:

The formula of an area of a square:

$A=s^2$

s - side length

We have s = 3x - y. substitute:

$A=(3x-y)^2$ use (a - b)² = a² - 2ab + b²

$A=(3x)^2-(2)(3x)(y)+y^2=9x^2-6xy+y^2$

7 0

3 years ago

What is 0.3x-2 equal

Rom4ik [11]

Answer:

i think -0.6

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers