3 years ago

-2+(-7)= What is the answer? HELP!!!!!!!!!

Mathematics

1 answer:

Elodia [21]3 years ago

6 0

Answer:

-9

Step-by-step explanation:

- 2 + ( - 7 )

- 2 - 7 = -9 ( Answer)

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If x^2 = 30, what is the value of x?

Lapatulllka [165]

$x= +\sqrt{30} ~or ~ -\sqrt{30}$
I'm not sure why ± that sybol isn't working
all together you can write $x=±\sqrt{30}$

Ughh just ignore the "A" symbol .-.

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3 years ago

A flying disc was originally marked at 5$ and has been sold at $3.50. What was the percent of discount?

Otrada [13]

Answer:

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Step-by-step explanation:

Percentage discount

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At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was

lina2011 [118]

By definition we have the following equation:
t = d / v
Where,
t: time
d: distance
v: speed
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d / 30 + d / 4 = 17
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2d + 15d = 17 (60)
17d = 17 (60)
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Then, the walking time is
t = d / v
t = 60/4
t = 15 hours
Answer:
She walked
t = 15 hours

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3 years ago

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scoray [572]

20.50 is the amount patti is making per hour

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A group of 5 campers used a total of 12 gallons of water on a camping trip. Each camper used the same amount of water. How many

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Each camper used 2.4 gallons of water.

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