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horrorfan [7]
3 years ago
13

Simplify the following without using a calculatora)- 4 x (8-(-3)) + 7​

Mathematics
1 answer:
bulgar [2K]3 years ago
3 0
-4(8-(-3))+7

Remove the parentheses, negative with negative will equal a positive so the new equation will be -4(8+3)+7. So 8+3=11, -4(11)+7. -4(11)=-44 and then add -44+7 which will equal -37
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Select the best method of finding an accurate solution to a system of linear equations
Flura [38]

The best method for solving the system of linear equation is by the use of algebraic methods.

The system of linear equations can be solved by using the method of simultaneous equations. Here we are given two equations and two unknown variables. We can solve the same by eliminating one of the variables and then either adding or subtracting, find the value of the other variable. Once we know the value of one variable, then we can substitute its value in any one given equation and find the second variable. This method is said to be accurate and does not involve any error.

Hence answer is : USE ALGEBRAIC METHODS

4 0
3 years ago
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Ariel completes the square for the equation x2 - 16x + 17 = 0. Which of the following equations reveals the vertex of the parabo
stealth61 [152]
X² - 16x + 17 = 0
x² - 16x + 8² - 8² + 17 = 0
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Answer: y = (x - 8)² - 47 (Answer D)
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Find the sum of the first 6 terms of 3 - 6 + 12 + …
Natalka [10]

Answer:

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Step-by-step explanation:

The sequence above is a geometric sequence.

The common ratio (r) = \frac{-6}{3} = \frac{12}{-6} = -2

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a1 = 3

r = -2

n = 6

Plug in the values into the formula

S_6 = \frac{3(1 - (-2^6)}{1 - (-2)}

S_6 = \frac{3(1 - (64)}{1 + 2}

S_6 = \frac{3(-63)}{3}

S_6 = -63

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3 years ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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