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2 years ago

How do you simplify the expression (2 x 4) plus 7 equals X

Mathematics

2 answers:

Alex Ar [27]2 years ago

8 0

The answer is 15 to the question

IrinaK [193]2 years ago

8 0

(2 × 4) + 7 = X

So to simplify, you just need to do everything in the brackets then add 7 to find the final value of X.

2 × 4 = 8

Put 8 back into the first equation

8 + 7 = X

X = 15

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The driving distance for the top 100 golfers on the PGA tour is between 284.7 and 310.6 yards (according to GolfWeek). Assume th

Usimov [2.4K]

Answer:

a) $f(x) = \frac{1}{25.9}$

b) 0.2046 = 20.46% probability the driving distance for one of these golfers is less than 290 yards

Step-by-step explanation:

Uniform probability distribution:

An uniform distribution has two bounds, a and b.

The probability of finding a value of at lower than x is:

$P(X < x) = \frac{x - a}{b - a}$

The probability of finding a value between c and d is:

$P(c \leq X \leq d) = \frac{d - c}{b - a}$

The probability of finding a value above x is:

$P(X > x) = \frac{b - x}{b - a}$

The probability density function of the uniform distribution is:

$f(x) = \frac{1}{b-a}$

The driving distance for the top 100 golfers on the PGA tour is between 284.7 and 310.6 yards.

This means that $a = 284.7, b = 310.6$ .

a. Give a mathematical expression for the probability density function of driving distance.

$f(x) = \frac{1}{b-a} = \frac{1}{310.6-284.7} = \frac{1}{25.9}$

b. What is the probability the driving distance for one of these golfers is less than 290 yards?

$P(X < 290) = \frac{290 - 284.7}{310.6-284.7} = 0.2046$

0.2046 = 20.46% probability the driving distance for one of these golfers is less than 290 yards

3 0

2 years ago

The graph of 3x - 2y = 6 does not pass through? <br><br> (4,-3)<br> (4/3,-1)<br> (-2,-6)

victus00 [196]

(4,-3) does not pass through the graph

If you put (4, -3) into the equation you get 18

If you put (4/3, -1) into the equation you get 6

If you put (-2, -6) into the equation you get 6

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2 years ago

Classify each pair of angles as Complementary, Supplementary or neither.

stellarik [79]

Answer:

Step-by-step explanation:

1. Supplementary

2. complementary

3. neither

4. These two are vertically opposite so neither.

5. Supplementary

6. They add to 90 so they are complementary

7. They add to 180 so they are supplementary.

8. These 2 are equal and vertically opposite. They are neither for this exercise.

9. Complementary: they add to 90.

8 0

3 years ago

an elevator is two floors below ground level and goes up 5 floors. write an addition equation that models the location of the el

sveticcg [70]

Below = a negative number (-)
-2
up = positive number
5
the equation would be -2+5 = ?
and the answer/ integer that represents the new location is 3

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2 years ago

a surf instructor has an initial fee of $12 and charges $8 per hour for lessons. Write a linear equation that represents the tot

Ray Of Light [21]

y = total cost

x = # of hours

$12 + $8x = y

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3 years ago