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natka813 [3]
3 years ago
12

Leann is 3 cm taller than Fred. If Fred's height is f cm, then Leann's height is cm?

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0
F + 3 = leann's height
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4.89 gallons of milk is sold for $12.79. If you have $21.44 in your wallet. How many
BaLLatris [955]
You cans buys 1 and have 8.65 dollars left because 12.79x2 is 25. So yah
8 0
2 years ago
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A coin is slightly bent, and as a result the probability of a head is 0.52. Suppose that you toss the coin four times. Use the B
Nataly_w [17]
Hi <span>Spor7tdardLamilokab, this particular equation is a binomial probability equation:

P(X) = </span>( \frac{n}{k}) * p^{k} *(1 - p)^{n-k}

Note that it's not n / k, but rather the notation is n choose k. Brainly software will not allow me to do this, but imagine the n choose k, without the bar, and that the correct notation.
 
Where (\frac{n}{k}) equals  \frac{n!}{k!(n-k)!} , where n! is n * (n-1) * (n-2) 8 ... 1

So for your particular equation:

P(x \geq 3) =  (\frac{5}{3}) * 0.52^{3} * (1 - .52)^{5-3}

You would repeat the above equation for 4 as well and add that to the computation for 3, since you want the probability that you'll get 3 or more heads.

Solving this produces the answer:

P(x\geq 3) = 0.34308352

You can also solve this with a TI 83 or 84.

To do this, the steps are 2ND | VARS (or DISTR) | BINOMPDF| TRIALS | PROBABILITY | X VALUE

Doing this for 3 and 4 produces the same result:

binompdf(4, 0.52, 3) + binompdf(4, 0.52, 4) = 0.34308352


5 0
3 years ago
Jack ran at 880 ft./min. For the first 10 min. Of the 3 mi. Race before slowing his pace to finish the race with a total time of
Nina [5.8K]

Answer:

Jack ran 704 ft/min during the second half of the race.

Step-by-step explanation:

Here the distance traveled was 3 miles, and the total elapsed time was 20 minutes.  Recall that distance = rate * time, or rate = distance / time.

Find the pace (speed, rate) for the second part of the race.

Here, the total distance was 3 miles and the elapsed time 20 minutes.  Jack's average speed was thus 3/20 miles/minute.  Converting this to feet per minute, we get:

3 mi          5280 ft

------------ * ------------- = 792 ft/min    (Jack's average speed)

20 min        1 mi

Recall that the formula for finding the average of x and y is (x + y) / 2.

(1/2)(880 ft/min  +  p) = 792 ft/min; find p, which represents Jack's pace for the second part of the race.

If (1/2)(880 ft/min  +  p) = 792 ft/min, and we mult. both sides by 2, we get:

880 ft/min + p = 1584 ft/min.

To solve this for p, subtract 880 ft/min from both sides, obtaining:

p = 704 ft/min

Jack ran 704 ft/min during the second half of the race.

3 0
3 years ago
7 − (6 ÷ 2)² + 2 jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj
Vlada [557]

Answer:

Step-by-step explanation:

7-(6/2)^2+2 = 4

pemdas

Parenthasis : 7 - (3) ^2 +2

Exponents : 7- 9 + 2

Multiplication : x

Division : x

Addition : 7-11

Subtraction : 4

8 0
2 years ago
Read 2 more answers
Does anyone know the last two? Match the correct property to the equation showing that property.
sergij07 [2.7K]

Explanation: The 4th one is the distributive property because it shows an     equal sign and the 5th one is the inverse property of addition because it uses more than addition.

Answer: 4th one is distributive property 5th one is inverse property of addition

P.S. I am sure 95% sure that I am correct.

8 0
1 year ago
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