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gogolik [260]
4 years ago
5

Describe how to round 3.987 to the nearest tenth

Mathematics
2 answers:
lana [24]4 years ago
6 0
Round the number in the tenths column (9), to the nearest tenth. (If it's 4 or less you round down, 5 or more you round up). The answer is 4.0.
Trava [24]4 years ago
6 0

OK, so first u need to know when to round up or down, 4 and under down and 5 and upper up. so the first number behind the decimal is the tenth place. so our answer is, 4 basically.

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15 points. Attached the question<br>​
Vanyuwa [196]

Answer:

3

Step-by-step explanation:

(2x +1)/8 - (x-1)/3 = 5/24

multiple the 2x+1/8 by 3 and multiple (x-1)/3 by 8 then add them up

6x+3/24 - 8x-8/24 ➡ 6x-8x+11/24 = 5/24

➡ -2x+11 = 5

➡ -2x = 5-11

➡ x = 3

4 0
4 years ago
At 6:00 PM, a flagpole that is 35 feet tall casts a shadow that is 50 feet long. At the same time, how long will a person's shad
sertanlavr [38]

<u>Answer:</u>

The length of the person’s shadow is 5.7ft

<u>Explanation:</u>

Length of the flagpole =a= 35ft

Length of the shadow of the flagpole= b=50ft

Length of the person=c= 4ft

Suppose the length of the person’s shadow is=d

According to the  rules of trigonometry

\frac{\text { Length of the flagpole }}{\text { Length of the shadow of the flagpole }}=\frac{\text { Length of the person }}{\text { Length of the person's shadow }}

\frac{a}{b}=\frac{c}{d}

\frac{35}{50}=\frac{4}{d}

35d=200

d=\frac{200}{35}

d=5.7ft  

Hence, The length of the person’s shadow is 5.7ft.

3 0
3 years ago
 -(5 – 3)2 + (8 – -2) – 3(4 + -1)2
telo118 [61]

Answer:

I think the answer would be -12

6 0
3 years ago
Read 2 more answers
ABCDEFGHIJ is a regular decagon with a radius of 25.89 units. Find the area of ABCDEFGHIJ. Round the answer to the nearest tenth
Verdich [7]
Let's call the midpoint of GF M.
MF = 16/2 = 8
KF = 25.89
MK = sqrt(25.89^2 - 8^2)
MK = 24.62
MKF = 8 * 24.62 / 2 = 98.48 square units for one triangle
There are 20 of those triangles that make up the decagon.
Therefore the total area = 20(98.48) = 1969.6 which would be option C
 
6 0
3 years ago
What is the slope of the line?
ExtremeBDS [4]

Answer:

\frac{1}{2}

Step-by-step explanation:

<h3>(2,1) (4,2)</h3>

\frac{y1 - y2}{x1 - x2}  \\   \frac{1 - 2}{2 - 4}  \\  \frac{ - 1}{ - 2}  \\  =  \frac{1}{2}

8 0
3 years ago
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