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Scilla [17]
3 years ago
13

Please show how 1200.00 is an estimate of 31×43?

Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0
Ok so you round 31 to 30 and 43 to 40 and then you multiply 30 by 40 and get 1200. 1200 is the same thing as 1200.00 bc you can take off the zeros after the decimal and it will be the same. Hope this helped and if your still confused you let me know I'll try to explain it more.
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Which expression is equivalent to 1/2(2n+6 ​
Sati [7]

Answer:

n+3

Step-by-step explanation:

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3 years ago
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WILL GIVE BRAINLIEST
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Answer:

V=πr²h

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How do you solve the inequality 6y+3> -18x
Alex17521 [72]
6y + 3 \ \textgreater \  - 18 x

Subtract 3 from both sides:

6 y + 3 - 3 \ \textgreater \  - 18 x - 3

6y \ \textgreater \  - 18 x - 3

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\frac{6y}{6} \ \textgreater \   \frac{-18x-3}{6}

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hope this helps!


6 0
3 years ago
a ship leave port p and sails on a bearing N50 degree E to Port Q 15km away.then it sails on a bearing of S45 degree E to Port R
Shtirlitz [24]

Answer:

Port r is 100° from Port p and 26km from Port p

Step-by-step explanation:

Lets note the dimension.

From p to q = 15 km = a

From q to r = 20 km= b

Angle at q = 50° + 45°

Angle at q = 95°

Ley the unknown distance be x

Distance from p to r is the unknown.

The formula to be applied is

X²= a²+ b² - 2abcosx

X²= 15² + 20² - 2(15)(20)cos95

X²= 225+400-(-52.29)

X²= 677.29

X= 26.02

X is approximately 26 km

To know it's direction from p

20/sin p = 26/sin 95

Sin p= 20/26 * sin 95

Sin p = 0.7663

P= 50°

So port r is (50+50)° from Port p

And 26 km far from p

3 0
3 years ago
If k is the midpoint of LM and k (-4,-6) and m(-7,-3). find l (endpoint)​
Fudgin [204]

Answer:

(-1,-9) <u>PLEASE MARK BRAINLIEST!!!!!</u>

Step-by-step explanation:

k(-4,-6) , m(-7,-3)

-7+4=-3

-3+6=3

-4+3=-1

-6-3=-9

(-1,-9)

3 0
3 years ago
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