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3 years ago

Evaluate f(-2): SHOW ALL WORK f(x) = x - 4

Mathematics

2 answers:

In-s [12.5K]3 years ago

7 0

Answer:

-6

Step-by-step explanation:

substitute x=-2

f(-2)=(-2)-4=-6

Aleonysh [2.5K]3 years ago

6 0

Answer:

- 6

Step-by-step explanation:

f(x) = x - 4

f( - 2) = - 2 - 4 = - 6

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Antonio sold skis for $220. His wholesale cost was $165. What was the percent markup?

natali 33 [55]

Answer:

Antonio paid $220 for skis he sold for $165, so his profit was $55.

Markup is a percentage increase from the wholesale price,

so let's find the percentage of $55 to $165:

$55/$165 = 33% .

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3 years ago

Two gears are connected and are rotating simultaneously. The smaller gear has a radius of 2 inches, and the larger gear has a ra

shutvik [7]

R - radius of the larger circle
r - radius of the smaller circle

Circumference of the larger circle = $2R\pi=2\times 8\pi=16\pi$
Circumference of the smaller circle = $2r\pi=2\times 2\pi=4\pi$

Part 2: During one complete rotation of the larger gear both gears pass the same distance $16\pi$ .
Therefore, the smaller gear makes $\frac{16\pi}{4\pi}=4$ complete rotations.

Part 1: During one complete rotation of the smaller gear both gears pass the same distance $4\pi$ .
Therefore, the larger gear makes $\frac{4\pi}{16\pi}=\frac{1}{4}$ of a complete rotation.
Since one complete rotation corresponds to 360 degrees, 1/4 of a complete rotation corresponds to 360/4=90 degrees.

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4 years ago

Starting at home, Omar traveled uphill to the gift store for 30 minutes at just 10 mph. He then traveled back home along the sam

hichkok12 [17]

I guess you want to find the average speed for the whole journey

average speed = distance travelled / time

the distance from home to the shop = speed * time = 0.5*10 = 5 miles

time for travelling back = distance / speed = 5/30 = 1/6 hours

average speed for whole journey = 10 / (1/2 + 1/6) = 10 * 3 / 2 = 15 mph

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3 years ago

a coin is tossed and a die is rolled. Find the probability of tossing a tail and then rolling a number greater than 2

rodikova [14]

Answer:

1/3; 33% chance

Step-by-step explanation:

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