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2 years ago

Help me please i need step by step explanation to please

Mathematics

1 answer:

boyakko [2]2 years ago

7 0

Answer:

-80x + 24 (A)

Step-by-step explanation:

To solve this, we need to break the brackets. This is done by multiplying -8 to 10x and -3 to give us our final answer of -80x + 24.

So, the answer is A.

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Help me please I have an f in this class I will give you 44 points

Bond [772]

8 x 7s = 56s

8 x (-2) = -16

so 8(7s - 2) = 56s - 16

5 0

2 years ago

The explicit rule for a sequence is an=5(−2)^n−1

Murrr4er [49]

Answer:

3) $a_n=-2a_{n-1}$ , $a_1=5$

Step-by-step explanation:

Given that the explicit rule for a sequence is $a_n=5(-2)^{n-1}$ .

Now we need to find about what is the recursive rule for the sequence and match with the given choices to find the correct choice.

1) $a_n=-2a_{n+1}$ , $a_1=5$

2) $a_n=-5a_{n+1}$ , $a_1=2$

3) $a_n=-2a_{n-1}$ , $a_1=5$

4) $a_n=-5a_{n-1}$ , $a_1=2$

Plug n=1 into given formula to get first term

$a_n=5(-2)^{n-1}$

$a_1=5(-2)^{1-1}=5(-2)^{0}=5(1)=5$

base of the exponent part is (-2) so that means we need to multiply -2 to the previous term to get nth term

Hence correct choice is: 3) $a_n=-2a_{n-1}$ , $a_1=5$

7 0

2 years ago

Evaluate the polynomial for x = 0.<br> 3x2 - 2x + 3

muminat

Answer: 285

Step-by-step explanation:

302 - 20 + 3

4 0

2 years ago

Is the following statement true or false?<br> The decimal equivalent of 9/4 is a repeating decimal.

Sergio039 [100]

False, it is not a repeating decimal
9/4 = 2.25

3 0

2 years ago

Transformation rules, HELP PLEASE, WILL GIVE BRAINLEIST

Tatiana [17]

1. (x , y) → (kx , ky) = Dilation ; similar image
2. (x , y) → (y , -x) = Rotation 90 counterclockwise ; congruent
3. (x , y) → (-x , y) = Reflection over y-axis ; congruent
4. (x , y) → (-x , -y) = Rotation 180 ; congruent
5. (x , y) → (x, -y) = Reflection over x-axis ; congruent
6. (x , y) → (-y , x) = Rotation 90 clockwise ; congruent
7. (x , y) → (x + a , y + b) = Translation ; congruent

Hope this helps :)

8 0

3 years ago