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3 years ago

13

(x^2-5x+2) (3x^2+2x+3)

1 answer:

Sladkaya [172]3 years ago

8 0

3X^4-13x^3-x^2-11x+6

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Numarul 4 este solutie a ecuatiei 3(x-1)=5+x

sweet-ann [11.9K]

To solve x, you would distribute the 3 to the numbers in the parenthesis. 3x-3=5+x Now you would combine like-terms which would give you: 2x=2. Now you would divide by 2 on both sides to give you x=1. I hope you understand what I did. Hope I helped you!

7 0

3 years ago

Which recursive formula defines this sequence for n > 1?

Sergeeva-Olga [200]

Answer:

(B) $a_n=a_{n-1}+3$

Step-by-step explanation:

Given the sequence: 3, 6, 9, 12, 15, 18, ...

6=3+3

9=6+3

12=9+3

If we continue in like manner, we notice that the nth term ( $a_n$ ) is an addition of 3 to the previous term ( $a_{n-1}$ ).

Therefore (for n>1), the recursive formula which defines the sequence is:

$a_n=a_{n-1}+3$

The correct option is B

8 0

3 years ago

Solve the system of equations<br><br> 4x+3y=13<br> y=-x+4

Delvig [45]

4x+3y=13
y=-x+4
x+y=4
4x+3y=13
4x+4y=16
-y=-3
<em>y=3
</em><em />4x+9=13
4x=4<em>
x=1
hope i helped!!</em>

8 0

3 years ago

If 60% of a number is 90, what is 4/5 of the <br>number?

sukhopar [10]

Answer:

120

Step-by-step explanation:

Let the required number be x

So,

60% of x = 90

0.6x = 90

x = 90/0.6

x = 900/6

x = 150

$\frac{4}{5} x = \frac{4}{5} \times 150 = 4 \times 30 = 120 \\$

7 0

3 years ago

-2 and 1/3 times 1 and 1/2=

torisob [31]

Answer:

$-2\frac{1}{3}\times 1\frac{1}{2}=-3.5$

Step-by-step explanation:

We are asked to find the product of $-2\frac{1}{3}$ and $1\frac{1}{2}$ .

Upon writing our expression as a product we will get,

$-2\frac{1}{3}\times 1\frac{1}{2}$

Let us convert our given mixed fractions to improper fractions.

$\frac{-7}{3}\times \frac{3}{2}$

Upon cancelling out 3 from our given expression we will get,

$\frac{-7}{2}$

Upon dividing -7 by 2 we will get,

$\frac{-7}{2}=-3.5$

Therefore, our expression simplifies to -3.5.

4 0

3 years ago