3 years ago

Solve |x|>4 A. {-4,4} B. {x|-4 C. {x|x<-4 or x>4}

Mathematics

1 answer:

Arisa [49]3 years ago

5 0

Answer:

C. {x | x < -4 or x > 4}

Step-by-step explanation:

|x| > 4
1. x > 4
2. x < -4

Combined, it is option C. {x | x < -4 or x > 4}

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A tortoise traveled 1/6 kilometer in 7/8 hour. What was its average speed in kilometers per hour?

xxTIMURxx [149]

Answer:

4/21 kilometers per hour

Step-by-step explanation:

Since the tortoise traveled 1/6 kilometers in 7/8 hour we can divide 1/6 by 7 because 7/8 divided by 7 is 1/8 and get 1/42.Once we've done this we can then multiply 1/6 by 8 since 1/8 x 8= 8/8 or 1 hour and get 8/48 which simplifies to 4/21.

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3 years ago

Lauren was asked to solve for x. She thinks that x equals 114 degrees because the Angle X is congruent to the 114 degree angle.

Arte-miy333 [17]

Answer:

Step-by-step explanation:

x and 114° are same- side interior angles and are supplementary, then

x = 180 - 114 = 66

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2 years ago

Tom purchased international calling cards before traveling abroad. He bought a 60-minute card for $9.99, a 90-minute card for $1

SpyIntel [72]

The amount spent on calls per minute is an illustration of unit rates.

The amount spent on the 38-minute call is $113.62

The given parameters are:

$\mathbf{Rate = \$2.99/minute}$

$\mathbf{Time = 38\ minutes}\\$

So, the amount spent on call is:

$\mathbf{Amount = Rate \times Time}$

This gives

$\mathbf{Amount = \$2.99/minute \times 38\ minutes}$

Cancel out minutes

$\mathbf{Amount = \$2.99 \times 38}$

$\mathbf{Amount = \$113.62}$

Hence, the amount spent on the 38-minute call is $113.62