3 years ago

solve for x under the assumption that x<0. Enter your answer in interval notation using grouping symbols

Mathematics

1 answer:

alexira [117]3 years ago

8 0

Step-by-step explanation:

x² + 9x < -20

x² + 9x + 20 < 0

(x + 4)(x + 5) < 0

Therefore -5 < x < -4 / (-5,-4)

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Gustavo pays $12.64 to download 8 songs. Each song costs him the same amount. Estimate the amount he pays to download each song.

prisoha [69]

Answer:

1.58

Step-by-step explanation:

The answer should be 1.58 because 12.64 divided by 8 is 1.58

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sergij07 [2.7K]

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3 years ago

Swimsuit discounted 65% on sale for $20.30.

Dafna1 [17]

Original price of the swimsuit = x

If something was discounted 65%, that means you are paying 35% for it.
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4 years ago

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1/7 divided by blank equals 14

kherson [118]

Answer:

1/98

Step-by-step explanation:

Step 1: Translate statement into equation.

$\frac{1}{7}/x = 14$
$\frac{1}{7x}=14$

Step 2: Multiply both sides by 7x.

$\frac{1}{7x} * 7x = 14 * 7x$
$1 = 98x$

Step 3: Divide both sides by 98.

$\frac{1}{98} =\frac{98x}{98}$
$x = \frac{1}{98}$

Step 4: Check if solution is correct.

$\frac{1}{7}/\frac{1}{98}$
$\frac{1}{7}*98$
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Therefore, the answer is 1/98.

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2 years ago

What is the greatest common factor of 42a^5b^3, and 42ab^4

kotegsom [21]

The greatest common factor of 36x3 and 8x is simply 4X

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