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Julli [10]
3 years ago
14

Please help super hard

Mathematics
1 answer:
lord [1]3 years ago
7 0

Answer:(4,5) is the answer

Step-by-step explanation:

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find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be
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Answer B (but see the problem)
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3 years ago
Read 2 more answers
Solve this in distributing -(5.3x-7y)-9.6
algol13

Answer:

-\left(5.3x-7y\right)\left(-9.6\right)=\:50.88x-67.2y

Step-by-step explanation:

Given the expression

-\left(5.3x-7y\right)\times \left(-9.6\right)

=-\left(-9.6\right)\left(5.3x-7y\right)

Apply distributive law

a\left(b-c\right)=ab-ac

a=-\left(-9.6\right),\:b=5.3x,\:c=7y

so the expression becomes

=-\left(-9.6\right)\times \:5.3x-\left(-\left(-9.6\right)\right)\times \:7y

=-\left(-9.6\right)\times \:5.3x+7\left(-9.6\right)y    ∵ -\left(-a\right)=a

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a

=9.6\times \:5.3x-7\times \:9.6y

=50.88x-7\times \:9.6y

=50.88x-67.2y

Therefore,

-\left(5.3x-7y\right)\left(-9.6\right)=\:50.88x-67.2y

3 0
3 years ago
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