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3 years ago

Which of the statements is true for the two equations below?

Mathematics

1 answer:

monitta3 years ago

4 0

Equation A:

6 + 3x = 3x - 3

This equation has no solution, no matter what number you plug into the equation, it will never = each other

[if you tried simplifying more]

9 + 3x = 3x (added 3 on both sides, then subtracted 3x on both sides)

9 = 0

Equation B:

2(4x - 1) = 8x - 2 Distribute/multiply 2 into (4x - 1)

(2)4x - (2)1 = 8x - 2

8x - 2 = 8x - 2

This will have an infinite number of solutions because whatever number you plugged in, they would always = each other since they are the same on both sides of the equation

[simplified]

8x = 8x (add 2 on both sides, then divide 8 on both sides)

x = x

Your answer is A

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Pooled Combined Variance $s_p=12.5$

Test Statistic:

$t=\frac{\left(\bar{X_1}-\bar{X_2}\right)}{s_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}$

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3 years ago

Scientific notation The table shows the amount of money raised by each region the four regions used a total of $ (5.38×10^4) How

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9514 1404 393

Answer:

$8.65×10^3

Step-by-step explanation:

The amount the West raised is the difference between the total and the sum of the other amounts raised. It is convenient to use a multiplier of 10^4 for each of the numbers, so the number for South can be rewritten as 0.675×10^4.

West = 5.38×10^4 -1.46×10^4 -2.38×10^4 -0.675×10^4

= (5.38 -1.46 -2.38 -0.675)×10^4

= 0.865×10^4 = 8.65×10^3

West raised $8.65×10^3.

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