2 years ago

An object is moved at a constant speed of 20m/s for 4s

Mathematics

1 answer:

konstantin123 [22]2 years ago

3 0

Answer:

80 m is distance traveled

Step-by-step explanation:

if object moves at 20m/s, then in 4 seconds the expression 20 x 4 is used to get 80. 80 m traveled

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BARSIC [14]

The answers is the last one

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Nine more than four times a number is the same as one less than twice the number find the number

klio [65]

4x + 9 = 2x - 1
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A certain tennis player makes a successful first serve 6969% of the time. Suppose the tennis player serves 9090 times in a matc

Wewaii [24]

Answer:

a) 4.387

b) Yes, because np & npq are greater than 10.

c) = 0.017

Step-by-step explanation:

Give data:

p = 0.69

n = 90

a) a

E(X) = np = 62.1

$SD(X) = \sqrt{(np(1-p))}$

$=\sqrt{90\times 0.69(1- 0.69)}$

= 4.387

np = 62.1

q = 1 - p = 1 - 0.69 = 0.31

npq = 19.251

Yes, because np & npq are greater than 10.

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$= P(Z> \frac{((71.5-62.1)}{ 4.387})$

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= 1 - P(Z<2.14)

= 1 - 0.983 (using table)

= 0.017

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3 years ago

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gizmo_the_mogwai [7]

Answer:

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Step-by-step explanation:

Graph the function and observe that the function P(t) increases without bound as x increases.

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