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8 months ago

For Problems 9-10, simplify the expressions using properties of operations. 9. (4x – 7.2) + (-5.3x-8) 10. (t - 1) – (-7t + 2)

Mathematics

1 answer:

mafiozo [28]8 months ago

7 0

The given expression is : (4x – 7.2) + (-5.3x-8)

Simplify :

Open the brackets :

(4x – 7.2) + (-5.3x-8) = 4x - 7.2 - 5.3x - 8

Arrange the variable and constant terms together :

(4x – 7.2) + (-5.3x-8) = 4x - 5.3x - 8 - 7.2

Solve the variable and constant terms together :

(4x – 7.2) + (-5.3x-8) = - 1.3x - 15.2

Since, the variable and constant term can not solve together so the above equation is the simplest form:

(4x – 7.2) + (-5.3x-8) = - 1.3x - 15.2

Answer : (4x – 7.2) + (-5.3x-8) = - 1.3x - 15.2

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<h3>What is sequence ?</h3>

Sequence is collection of numbers with some pattern .

Given sequence

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$\sum_{n=4}^{15} T_{n}\\\\$\\$\sum_{n=4}^{15} 5(-2)^{n-1}$$$

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is $\sum_{n=4}^{15} 5(-2)^{n-1}$$$

To learn more about Geometric progression visit : brainly.com/question/14320920

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