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3 years ago

49b^2 - 256 = 0 Solve, and show steps if you can!

1 answer:

6 0

Note that 49b^2 - 256 = 0 is the difference of two squares. Thus, 49b^2 - 256 = 0 can be re-written as

(7b)^2 - 16^2 = 0, which factors into (7b+16)(7b-16)=0.

Solving for b: 7b+16=0 becomes b = -16/7, and
7b-16=0 becomes b = 16/7.

As expected, this 2nd order equation has 2 solutions.

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Which line plot displays a data set with an outlier? An untitled line plot from 10 to 21. The plot displays the following values

RSB [31]

Answer:

Is there a picture because I don’t know what you need help with you typed a lot of words but not a picture

Step-by-step explanation:

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3 years ago

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RideAnS [48]

Answer:It looks to me like you answered it and made it look like you did not.

Step-by-step explanation:

The page is darker than where the answer is.

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3 years ago

Ex 9-9 Straight-line depreciation ObJ. 2

NNADVOKAT [17]

Depreciation = (Cost - Residual)/Useful Life
Cost = $48,000
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2 years ago

1. When professional golfer Jordan Spieth hits his driver, the distance the ball travels can be modeled by

Doss [256]

Answer:

a. About 96% of Spieth's drives travel at least 290 yards

b. The ball has to travel about 314.24 yards

Step-by-step explanation:

* Let us explain how to solve the problem

- The distance the ball travels can be modeled by distribution with

mean 304 yards and standard deviation 8 yards

- Jordan would need to hit the ball at least 290 yards to have a clear

second shot that avoids a large group of trees

- We need to find the percent of Spieth's drives travel at least

290 yards

∵ The mean μ = 304 yards

∵ The standard deviation σ = 8 yards

∵ The distance x = 290

∵ P(x ≥ 290) = P(z ≥ z)

- We need to find z score

∵ z-score = (x - μ)/σ

∴ z = $\frac{290-304}{8}$ = -1.75

* Let us use the normal distribution table to find the corresponding

area of z = -1.75

∵ P(-z) = 1 - P(z)

∵ P(z ≥ -1.75) = 1 - 0.04006 = 0.95994

∴ P(x ≥ 290) = 0.96 = 96%

* About 96% of Spieth's drives travel at least 290 yards

- On another golf hole, Spieth has the opportunity to drive the ball

onto the green if he hits the ball a distance in the top 10% of all

his drives

- We need to find how far the ball has to travel

- Let us find the z-score from the normal distribution table for the 10%

to the right or 90% to the left

∵ The area which equivalent to 0.9 ≅ 0.89973

∴ z = 1.28

∵ z-score = (x - μ)/σ

∴ 1.28 = $\frac{x-304}{8}$

- Multiply both sides by 8

∴ 10.24 = x - 304

- Add 304 for both sides

∴ x = 314.24 yards

* The ball has to travel about 314.24 yards

8 0

2 years ago

6. Can an isosceles triangle be an obtuse triangle? Explain.

kondor19780726 [428]

Answer:

No. It can be obtuse angle are angles greater than 90° but less than 180°

And for an isosceles triangle, two angles must be equal so if two angles are greater than 90° that mean the sum of angle in a triangle is above 180° which is not possible

Step-by-step explanation:

5 0

2 years ago