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ANTONII [103]
4 years ago
11

A missiles is fired at a target and the probability that the target is hit is 0.7 . Find how many missiles should be fired so th

at the probability that the target is not hit is less than 0.001 .​
Mathematics
1 answer:
DiKsa [7]4 years ago
8 0

Answer:

(C)

Step-by-step explanation:

We want the probability of at least one hit in  

missiles to be at least 80%.

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The grid model expressed as a ratio of shaded squares to total squares is _____
fredd [130]

Answer:

1  = 25/50

2 =  1/2

3 = 0.50

4 = 50%

Step-by-step explanation:

i got it right on edg and i hope it helps :)

4 0
4 years ago
Martin has a combination of 33 quarters and dimes worth a total of $6. Which system of linear equations can be used to find the
Komok [63]

Answer:

D) q + d = 330

0.25q + 0.1d = 6

Step-by-step explanation:

Let q= numbers of quarters

d = number of dimes

q + d = 33 ...........(1)

q = 33 - d

xq + yd = 6 ..........(2)

We will consider the options to know the correct answer

From option A

q +d = 6

25q + 10d = 33

This is wrong

Option B

q + d = 60

0.25q + 0.1d = 33

This is also wrong

Option C

q+d = 33

25q + 10d = 6

Put q = 33 -d in equation 2

25(33 - d) + 10q = 6

825 - 25d + 10d = 6

825 - 15d = 6

-15d = 6-825

-15d = -819

d = -819/-15

d= 54.6

This is also wrong because d exceeds the combination.

Option D

q+d = 33

0.25q + 0.1d = 6

Put q = 33 -d in equation 2

0.25(33 - d) + 0.1d = 6

8.25 - 0.25d + 0.1d = 6

8.25 - 0.15d = 6

-0.15d = 6 - 8.25

-0.15d = -2.25

d = -2.25/ -0.15

d = 15

q = 33 - 15

q = 18

This is correct

5 0
3 years ago
Read 2 more answers
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DiKsa [7]

Answer:

1/6

Step-by-step explanation:

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4 0
2 years ago
Will give brainliest!!
labwork [276]

Answer:

DE = 12cm

Step-by-step explanation:

It's free real estate

6 0
3 years ago
Read 2 more answers
as a parking security officer you must record the license plate of every car that enters the parking garage during your 9 hour s
Novay_Z [31]
I think it will be 23 because you will divide 208 by 9 and you will get
23 r1

6 0
3 years ago
Read 2 more answers
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