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3 years ago

11 is 4% of what number

1 answer:

5 0

<span>First, we must convert the given fraction into a decimal number. So use a calculator or long division to convert the given fraction 11/4  to a decimal number. In this case, 2.75

Now just multiply the equivalent decimal  2.75 by 100 to convert it into a percent. So 100x2.75=275. Take note that we're simply moving the decimal point two spots to the right.

So the given fraction 11/4  is equivalent to 275%
so the answer is 275</span>

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The probability that a single radar set will detect an enemy plane is 0.9. if we have five radar sets, what is the probability t

Readme [11.4K]

The probability that a single radar set will detect an enemy plane is 0.9. if we have five radar sets, what is the probability that exactly four sets will detect the plane?

Solution: The given random experiment follows binomial distribution with $p=0.9,n=5$

Let x be the number of radar sets that will detect the plane.

We have to find $P(x=4)$

$P(x=4)=\binom{5}{4}0.9^{4}(1-0.9)^{5-4}$

$=5\times 0.6561 \times 0.1$

$=0.3281$

Therefore, the probability that exactly four sets will detect the plane is 0.3281

7 0

4 years ago

Tom had 114 baseball cards. He kept 10 and shared the rest evenly among his 8 friends. How many baseball cards did each friend g

SVETLANKA909090 [29]

104/8=13
each friend gets 13 cards

3 0

3 years ago

Read 2 more answers

Question halp me plss

Usimov [2.4K]

Answer:

-25

Step-by-step explanation:

when b = 6

sub b = 6 into b^2-9b-7

6^2-9(6)-7

36-54-7

36-61

-25

3 0

3 years ago

Need help on number 8

krok68 [10]

I know point a=1 But the others not sure

7 0

4 years ago

Read 2 more answers

A collection of quarters and nickels is worth $14.80. There are 88 coins in all.

ycow [4]

So the equaiton is

number of nickes=n
number of quarters=q

if you have 1 quarter then you have 25 cents so we will represent like this
25q

and nickles is 5n
14.50=1450 cents

so
25q+5n=1480
q+n=88
subtract q from both sides
n=88-q
subsitute into first equation
25q+5(88-q)=1480
25q+440-5q=1480
add like terms
20q+440=1480
subtract 440 from both sides
20q=1040
divide both sdies by 20
q=52
there were 52 quarters
25(52)+5n=1480
1300+5n=1480
subtract 1300 from both sides
5n=180
divide both sides by 5
n=36
there were 36 nickels

nickles=36
quarters=52

8 0

4 years ago