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4 years ago

Determine which situation(s) best describes operations with the numbers 4.58 and -0.145. Select all situations that apply.

1 answer:

7 0

The product and the quotient of the decimal numbers are both negative
(because when multiplying/dividing, and ur signs are different, then ur answer will be negative)

The sum of the decimal numbers is positive
(because when adding, if the signs are different, u subtract and take the sign of the larger number)

The difference of the decimals is positive
(because ur subtracting a negative...4.58 - (- 0.145) = 4.58 + 0.145...and that equals a positive)

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152

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3 years ago

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2 years ago

Read 2 more answers

Find the difference and simplify.

Murrr4er [49]

Step-by-step explanation:

$\frac{x + 1}{x - 4} - \frac{x + 3}{x + 2} \\ \frac{(x + 1)(x + 2)}{(x - 4)(x + 2)} - \frac{(x + 3)(x - 4)}{(x + 2)(x - 4)} \\ \frac{ {x}^{2} + 3x + 2 }{(x + 2)(x - 4)} - \frac{ {x}^{2} - x - 12 }{(x + 2)(x - 4)} \\ \frac{( {x}^{2} + 3x + 2) - ( {x}^{2} - x - 12)}{(x + 2)(x - 4)} \\ \frac{ {x}^{2} + 3x + 2 - {x}^{2} + x + 12}{(x + 2)(x - 4)} \\ \frac{4x + 14}{(x + 2)(x - 4)} \\ \frac{2(2x + 7)}{(x + 2)(x - 4)}$

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3 years ago

Makovka662 [10]

Answer:

∠ ADC = 100° , ∠ DCB = 39°

Step-by-step explanation:

(3y + 7) and ( 3y - 13) are angles on a straight line and sum to 180° , so

3y + 7 + 3y - 13 = 180

6y - 6 = 180 ( add 6 to both sides )

6y = 186 ( divide both sides by 6 )

y = 31

Then

∠ ADC = 3y + 7 = 3(31) + 7 = 93 + 7 = 100°

and

∠ BDC = 3y - 13 = 3(31) - 13 = 93 - 13 = 80°

∠ BDC = 180° - (61 + 80)° ← angle sum in Δ BCD = 180°

= 180° - 141°

= 39°

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3 years ago