There are 520 bridges on the freight rail network in the province of Ostenborg. Of these, 200 are classified as “old” rail bridges (i.e., 50 years or more in age). Past records indicate that 50% of all rail bridges in the state exhibit visible signs of structural distress. Of the bridges 70% are old or exhibit structural distress.

Find the probability that a randomly selected rail bridge will exhibit structural distress given that it is old.

1. The amount of money in the account after 10 years is 42,317.96 dollars.

2. it will take Pamela and Kevin 7.5 hours to complete the task together

Question(1)

Using compound interest formula,

[tex]A = p(1 + \frac{r}{n} )^{nt}[/tex]

where

Therefore,

p = 30,000

r = 3.5% = 0.035

t = 10

n = 1

Therefore,

[tex]A = 30000(1+\frac{0.035}{1} )^{1X10}[/tex]

A = $42,317.96

Question 2:

Pamela takes 12 hours to complete a task.

Kelvin takes 20 hours to complete same task.

The time it will take both of them can be computed as follows:

using rate principle,

let

x = time it will take both of them to do the work together.

[tex]\frac{1}{x}=\frac{1}{12} + \frac{1}{20}[/tex]

[tex]\frac{1}{x}=\frac{20+12}{240}[/tex]

[tex]\frac{1}{x}=\frac{32}{240}[/tex]

cross multiply

240 = 32x

x = 240 / 32

x = 7.5 hours

Therefore,  it will take Pamela and Kevin 7.5 hours to complete the task together

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A bond purchased at a premium, it will have a yield to maturity and current yield that is lower than its coupon rate.

This is usually above its face value which may be as a result of the interest rate being higher than the current market interest rates.

When a bond is traded at a premium, the yield to maturity and current yield will be lower than its coupon rate.

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Answer:

£1.44

Step-by-step explanation:

N1 = £0.12

N12 = 12 × N1 = 12 × £0.12 = £1.44

Answer: is C

Step-by-step explanation:

Answer:

$0.29 and if you want to round it up then it is going to be $0.30

Step-by-step explanation:

You are asking what 1 pack of gum costs. We already know that 6 packs of gum costs $1.74 and we need to find the unit rate which is basically what one pack of gum costs so in order to do that we need to [tex]\frac{1.74}{6}[/tex] which is 0.29 and that is the cost of 1 pack of gum. Hope that helps and also can you please mark me as brainlist. Thank you

Answer:

Step-by-step explanation:

Nines: (3,6), (4,5), (5,4), (6,3)

Tens: (4,6), (5,5), (6,4)

Elevens: (5,6), (6,5)

Twelves: (6,6)

4 + 3 + 2 + 1 = 10 outcomes possible

36 outcomes total for rolling two dice.

P(sum > 8) = 10/36 or 5/18 simplified.

Answer:

23 degrees

Step-by-step explanation:

We can use basic trigonometric equations to solve for the angle x because we are given a right triangle.

I will use the sin x = opposite / hypotenuse

sin x = 5 / 13

x = sin^-1 (5 / 13)

x = 22.61986 degrees

The question requires us to round to the nearest degree which is 23.

Other alternative methods you can use include the tangent and cosine functions or the law of cosines.

Answer:

x = 23°

Step-by-step explanation:

I will use

[tex]tanx=opposite/adjacent[/tex]

[tex]tanx=\frac{5}{12}[/tex]

[tex]x=tan^{-1} (\frac{5}{12} )=tan^{-1} (0.417)=22.62^{o}[/tex]

rounded to the nearest degree : 23°

Hope this helps

The value of x in 4096^x = 8 is 0.25

The equation is given as:

4096^x = 8

Express 4096 as 8^4

8^(4x) = 8

Cancel the common base

4x = 1

Divide by 4

x = 0.25

Hence, the value of x in 4096^x = 8 is 0.25

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Answer:

2h 1' 1"

Step-by-step explanation:

1h = 1 hora

1' = 1 minute

1" = 1 secind

The sum of the three days is:

  58'  45"

+ 40'  40"

  20'  36"

= 118'  121"

118' 121" = 118' + 121"

1' = 60"

121" = 120" + 1"  = (120/60) + 1 = 2' + 1"

Then:

118' + 121" = 118' + 2' ´+ 1" = 120' + 1"

1 h = 60'

(120/60) + 1 = 2h + 1'

then:

118' + 121" = 2h + 1' + 1"

= 2h 1' 1"

The true statement is (a) it is a function

For a relation to be a function, the following must be true:

Each x value must be paired with exactly one y value

From the table of values, all x values have exactly one y value

This means that the relation is a function

Hence, the true statement is (a) it is a function

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The correct option regarding whether the relation is a function is:

It is a function.

A relation represents a function if each input X is mapped to only one output Y.

In this problem, this statement is true(input 3 is mapped to output 10 twice, same output so ok), hence it is a function.

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The ending inventory using LIFO is $920.

The ending inventory using FIFO is $1,472.

LIFO means last in first out. It means that it is the last purchased inventory that is the first to be sold. Ending inventory would consist of first purchased inventory.

23 x $40 = $920

FIFO means first in, first out. It means that it is the first purchased inventory that is the first to be sold. Ending inventory would consist of last purchased items in inventory.

23 x $64 = $1,472

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Considering the area of the circles, the area of the blue section is of [tex]50\pi[/tex] cm².

The area of a circle of radius r is given as follows:

[tex]A = \pi r^2[/tex].

The area of the blue section is given by the area of the larger circle, of radius 10 cm, subtracted by the area of the two smaller circles, each with radius of 5 cm, hence:

[tex]A_G = \pi 10^2 = 100\pi[/tex]

[tex]A_S = 2 \times \pi \times 5^2 = 50\pi[/tex]

[tex]A_B = A_G - A_S = 100\pi - 50\pi = 50\pi[/tex]

The area of the blue section is of [tex]50\pi[/tex] cm².

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Answer:

1. How much profit would the restaurant make by selling 100 burritos?

Answer: The restaurant would make $550

2. How much money would the restaurant take in by selling 100 burritos

Answer: The restaurant would take in $800

Step-by-step explanation:

First we have to add all the negatives.

-1.50 + -1.00

= -2.50

Now that we have that, we just need to multiply both the 8 dollars and the -2.50 by 100.

8 * 100 = 800

-2.50 * 100 = -250

Now we have the answer for the second question.

The restaurant would take in $800 before the cost of the ingredients.

But now we need to find the profit. (Which is the amount of money they made minus the cost of the ingredients and meat)

800 - 250 = 550

So the restaurant will make $550 in profit.

Hope this helped! :D

Answer:

$550

Step-by-step explanation:

The dependent variable is time

The statement is given as:

"I did 60 brush strokes in 1 minute"

The dependent variable is the variable that is dependent on the action that is done.

From the statement.

The action is the strokes of brush

And time is dependent on the number of strokes

Hence, the dependent variable is time

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Answer: 1.59375. Round to 1.6 if need be.

Step-by-step explanation:

Their are 384oz in 3 gallons (multiply gallons by 128)

Their are 120 seconds in 2 minutes (multiply minutes by 60)

Multiply 1.5 * 120 = 180 to get how many oz have drained after 2 minutes.

Subtract 384 - 180 = 204 to get how many oz left in the milk container.

Convert 204oz to gallons by dividing by 128. 204 / 128 = 1.59375gallons.

The number that would have to be added to complete the square is 81/4.

Quadratic equations are polynomials of degree 2 , It is represwented by ax² + bx +c = 0.

The quadratic equation given is

x² -9x +2 = 0

x² -9x + (81/ 4) - (81/4) + 2 = 0

x² -9x + (9/2)² - (81/4) +2 = 0

(x - 9/2)²  - (73/4) = 0

Therefore , 81/4 will be added to complete the square to solve the quadratic equation.

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Answer:

  (c)  714.96 = 21.6(w +4.7)

Step-by-step explanation:

The area of the rectangular park will be the product of its length and width. This relation is used to write an equation to find the original width of the park.

Let w represent the original width of the park in meters. The new width is 4.7 meters more, so is represented by (w +4.7).

The length of the park is given as 21.6 meters. The area is given as 714.96 square meters.

The various dimensions of the park are related by the area formula:

  A = LW

  714.96 = 21.6(w +4.7)

Answer: The answer is C i took the k12 5.21 unit test

Step-by-step explanation:

Answer:

it shrink

if the number outside the absolute value is greater than 1 it shrinks

if the numerous is smaller than 1 it stretches

remember the saying about the parent function if you run less than 1 mile you are wider than the parent

if you run more than a mile here the number is 7 so it's skinner yhan the

Step-by-step explanation:

Answer:

n=16

Step-by-step explanation:

The income tax of Rebecca and Steve will be $27020 and $20625.

Rebecca has an income of $96500. The income tax will be:

= 28% × $96500

= 27020

Steve has an income of $82500. The income tax will be:

= 25% × $82500

= 20625

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Answer:

1.

p=M/V. by rearranging this formula you get

V=M/p

V=560kg/7kg/m³

=80m³ b/c kg canceled kg

2.

p=M/V

=352kg/220m³

=1.6kg/m³

Answer:

He can watch 8 movies

Step-by-step explanation:

100-40.66=59.34

6.71 x 8 = 53.68

therefore the most amount of movies he can watch is 8

Answer:

78.11 ft

Step-by-step explanation:

[tex]=125 tan 32\\=78.11 ft[/tex]

Using a system of equations, it is found that the average of sheep A and sheep D is of 191 pounds.

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are the weights of the sheep, given by A, B, C and D.

Sheep A and sheep B have an average weight of 150 pounds, hence:

[tex]\frac{A + B}{2} = 150[/tex]

A + B = 300 -> B = 300 - A

Sheep B and sheep C have an average weight of 127 pounds, hence:

B + C = 254

300 - A + C = 254

C - A = -46.

A - C = 46.

C = A - 46.

Sheep C and sheep D have an average weight of 168 pounds, hence:

C + D = 336

A - 46 + D = 336.

A + D = 382.

The average weight of sheep A and sheep D in pounds is:

[tex]\frac{A + D}{2} = \frac{382}{2} = 191[/tex]

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The number of eats of corn which have been picked is; 16.9 corns.

According to the question; 16 eats of corn are being picked foot every 18 peppers. In essence, the ratio of corns to peppers is; 16/18.

Hence, it follows that the number of corns which corresponds to 19 peppers been picked can be evaluated as follows;

16/18 = x/19

x = (19×16)/18

x = 16.9 eats of corn.

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The statement that cannot be true is that g cannot be parallel to h (g ║h)

On the plane ,

line b is parallel to line f.

Therefore,

b ║ f

line f is parallel to line g,

Therefore,

f ║ g

line h is perpendicular to line b.

h ⊥ b

Therefore,

Since line h is perpendicular b, line b is perpendicular to h.

b can be parallel to g on the plane.

g cannot be parallel to h because h is perpendicular to b.

h can be perpendicular to f because b is parallel to f.

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