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Inga [223]
3 years ago
15

ILL GIVE BRAINEST Simplify the expression.

Mathematics
2 answers:
Finger [1]3 years ago
8 0
C because it is really right
Travka [436]3 years ago
3 0

Answer:

c

Step-by-step explanation:

...................................

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What is the sum of -9 and -18?
Tcecarenko [31]

Answer: The answer to the question you asked up top would be -27, however the question in the picture doesn't match. As for the question in the picture, the answer is should be choice B or  4 square root 2i

Step-by-step explanation:

The first one: add the number together since they are both negative and just place a negative sign in front.

The second one: break down the square root of -18 into 9*-2. Then add   \sqrt{-2} +  3 \sqrt{-2}  which equals 4\sqrt{2}i

3 0
3 years ago
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Three towns P,Q and R are such that P is on a bearing of 120° and 20km from Q. Town R is on a bearing of 220° and 12km from P he
Anarel [89]

Answer:

247.18

Step-by-step explanation:

4 0
3 years ago
-2+x/8>0, what is the solution to this
zysi [14]
0, hope this helps you. Also you could’ve just plugged it in your calculator

3 0
3 years ago
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If a tank leaks 10 mL of fluid each hour, how long will it take to fill up a one-litre jar?
Rina8888 [55]

Answer:

100 hours

Step-by-step explanation:

To find the amount of liters in one hour, you divide 10 by 1000, which gives 0.01 liters each hour. From here, the 1 is in the hundredths place, so if you multiply by 100 hours, if will be at 1 liter.

6 0
3 years ago
At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. T
OLEGan [10]

Answer:

\text{Exact area of the sidewalk}=40 \pi\text{ m}^2

\text{Approximate area of the sidewalk}=125.6\text{ m}^2

Step-by-step explanation:

We have been given that at a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.

To find the area of the side walk we will subtract the area of inner edge of the side walk of lion pen from the area of the outer edge of the lion pen.

\text{Area of circle}=\pi r^2, where r represents radius of the circle.

\text{Exact area of the sidewalk}=\pi*\text{(11 m)}^2-\pi*\text{(9 m)}^2

\text{Exact area of the sidewalk}=\pi*\text{121 m}^2-\pi*\text{81 m}^2

\text{Exact area of the sidewalk}=40 \pi\text{ m}^2

Therefore, the exact area of the side walk is 40 \pi\text{ m}^2

To find the approximate area of side walk let us substitute pi equals 3.14.

\text{Approximate area of the sidewalk}=40*3.14\text{ m}^2

\text{Approximate area of the sidewalk}=125.6\text{ m}^2

Therefore, the approximate area of the side walk is 125.6\text{ m}^2.

4 0
3 years ago
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