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prohojiy [21]
3 years ago
5

Please help me on this​

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0
The answer for your question is -6/5
alexdok [17]3 years ago
5 0

Answer:

-6|5

Can I maybe be Brainliest

have a nice day Best regards

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Some track and field athletes feel that they are more likely to win a race if they start on the inside lane. The data above show
ivolga24 [154]

Answer:

D.]

Step-by-step explanation:

We will find the standard deviation and variance:

Variance= Ex^{2}-[[E(x)]^{2}

 E[x] = 3.462

E[{x}^2]= 31.86

Var(x)= 31.86-(3.462)^2 = 28.4

Standard deviation = \sqrt{Var(x)}

                               = \sqrt{28.4}

                               = 5.833 = 6(aproximately)

Therefore, the chances of winning are equal in each lane.

4 0
3 years ago
Read 2 more answers
What is 11 feet 6 inches + 12 feet 3 inches?
Vesna [10]

Answer:

23ft 9in

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What is the value of X given that the two triangles are similar.
grin007 [14]

Answer:

x = 13

Step-by-step explanation:

ΔRST≈ΔYSZ

therefore:

RT/ST = YZ/SZ

(3x-7)/40 = (2x+2)/35

cross-multiply:

40(2x+2) = 35(3x-7)

80x+80 = 105x-245

80 = 25x-245

325 = 25x

325/25 = x

x = 13

3 0
3 years ago
2 questions 90 points
saw5 [17]

Answer:

 1)   Volume of prism = \frac{105}{8}ft^3=13.125ft^3

 2) Option B is the correct answer.

Explanation:

1) Volume of a prism is given by the expression, Volume V = Base area of prism x Height of prism.

 Base area = 3\frac{1}{2} *2\frac{1}{2}=\frac{3*2+1}{2} *\frac{2*2+1}{2} =\frac{7}{2} *\frac{5}{2}=\frac{35}{4} ft^2

Volume = \frac{35}{4}*1\frac{1}{2} =\frac{35}{4}*\frac{1*2+1}{2}=\frac{35}{4}*\frac{3}{2}=\frac{105}{8}ft^3

 Volume of prism = \frac{105}{8}ft^3=13.125ft^3

2) Volume of a prism is given by the expression, Volume V = Base area of prism x Height of prism.

 Base area = 4\frac{1}{4} *3in^2

 Volume = 4\frac{1}{4} *3*1\frac{1}{4}in^3

 Option B is the correct answer.

5 0
3 years ago
A tunnel is cylindrical. The tunnel is 400 m long with radius 2.3 m.
pantera1 [17]

Answer:

6647.6 liters

Step-by-step explanation:

The volume of a cylinder with end area r and length (or height) h is

V = πr²h

If we substitute 2.3 m for r and 400 m for h, we get:

V = π(2.3 m)²(400 m) = 6647.6 m³ or 6647.6 liters

7 0
3 years ago
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