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3 years ago

11

Simplify: (-5a³-7a² +3)+(-9a³ +5a² +9)

1 answer:

DedPeter [7]3 years ago

3 0

Answer: =−14a3−2a2+12

Step-by-step explanation:

−5a3−7a2+3−9a3+5a2+9

=−5a3+−7a2+3+−9a3+5a2+9

Combine Like Terms:

=−5a3+−7a2+3+−9a3+5a2+9

=(−5a3+−9a3)+(−7a2+5a2)+(3+9)

=−14a3+−2a2+12

Answer:

=−14a3−2a2+12

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Simplify:<br> −z3+5k6−(−z3+10k6)

natta225 [31]

Answer:

The answer to your question is -5k⁶

Step-by-step explanation:

Polynomial

- z³ + 5k⁶ - (-z³ + 10k⁶)

Use law of signs for the parenthesis

- z³ + 5k⁶ + z³ - 10k⁶

Use associative property for like terms

(-z³ + z³) + (5k⁶ - 10k⁶)

Simplify like terms

(0) + (-5k⁶)

Result

-5k⁶

7 0

3 years ago

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morpeh [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Brilliant_brown [7]

Answer:

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Step-by-step explanation:

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3 years ago

Find a1 if Sn = 89,800, r = 3.4, and n = 10. Round to the nearest hundredth if necessary.

xxMikexx [17]

Answer:

$a_1=1.04$

Step-by-step explanation:

We have a geometric sequence with:

$Sn = 89,800$ , $r = 3.4$ , and $n = 10$

Where

Sn is the sum of the sequence

r is the common ratio

$a_1$ is the first term in the sequence

n is the number of terms in the sequence

The formula to calculate the sum of a finite geometric sequence is:

$S_n=\frac{a_1(1-r^n)}{1-r}$

Then:

$89,800=\frac{a_1(1-(3.4)^{10})}{1-3.4}$

Now we solve for $a_1$

$89,800(1-3.4)=a_1(1-(3.4)^{10})$

$a_1=\frac{89,800(1-3.4)}{1-(3.4)^{10}}\\\\a_1=1.04$

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4 years ago

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r-ruslan [8.4K]

Answer:

you multiply

Step-by-step explanation:

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3 years ago

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