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igor_vitrenko [27]
3 years ago
14

Enter the missing exponent. 9/49 = ( 3/7 )^

Mathematics
1 answer:
Deffense [45]3 years ago
7 0
The missing exponent is 2
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Provide an appropriate response. In order to efficiently bid on a contract, a contractor wants to be 95% confident that his erro
lidiya [134]

Answer:

d. 20

Step-by-step explanation:

Standard deviation is 4.5

Margin error for the problem is 2 hours

Probability 95%, that means that the siginficance level α is 1 – p

α = 1 – 0.95 = 0.05

margin of error (ME) can be defined as follows

ME = Z(α/2) * standard deviation/ √n

Where n is the sample size

Z(0.05/2) = Z(0.025)

Using a z table Z = 1.96

Now, replacing in the equation and find n

2 = 1.96 * 4.5/ √n

2 = 8.82/√n

√n = 8.82/2

√n = 4.41

n = 4.41^2

n = 19.44 ≈ 20

5 0
3 years ago
What is cos K<br> a) 25/7<br> b) 25/24<br> c) 7/25<br> d) 24/25
AVprozaik [17]

Answer: d)

Step-by-step explanation:

7 is the opposite

25 is the hypotenuse

24 is the adjacent

if u refer back to SOH CAH TOA

cos = adj divided by the hyp

cos K = 24/25

*please make sure to double check for yourself or get another person to look it over just incase*

8 0
2 years ago
What is the exact volume of the sphere?
sasho [114]
We know, Volume of a Sphere = 4/3 πr³
V = 4/3 * π * (12.3)³
V = 4/3 * π * 1860.71
V = <span>2481.156π cm³

In short, Your Answer would be Option A

Hope this helps!</span>
6 0
3 years ago
Read 2 more answers
Y is inversely proportional to x given that y=-50 when x=3 find y when x=10
sammy [17]

Answer:advadfvzcs

bv

Step-by-step explanccccdcsdadrfaration:

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4 0
3 years ago
Two dice are rolled, and the sum of the face values is six. What is the probability that at least one of the dice came up a thre
gizmo_the_mogwai [7]

Answer : P(\text{ atleast one of the dice come up 3})= \frac{1}{5}

Explanation :

We know that ,

Sample space of " sum of faces is 6"= \{(3,3),(4,2),(2,4),(5,1),(1,5)\}

Atleast one of the dice come up 3 = \{(3,3)\}

So,

Probability = \frac{\text{No. of favourable outcomes}}{\text{Total no. of outcomes}}

P(\text{ atleast one of the dice come up 3})= \frac{1}{5}

8 0
3 years ago
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