i need someone to solve for x and show how plzz

Area = 8,100 square feet

area of a square = a²

8,100 square feet = a²

√8,100 square feet = √a²

90 feet = a

total length each row of bookshelf is 4/5 of the length of the storage space.

90 feet * 4/5 = (90*4)/5 = 360/5 = 72 feet.

Area = (72 ft)²

Area = 5,184 square feet.

Answer:

219.375

Step-by-step explanation:

Speed = distance / time

67.5 = distance / 3.25 hours

Multiply both sides by 3.25

67.5 x 3.25 = 219.375

Answer:

The Train Could travel 219.375 MPH

Step-by-step explanation:

Since the train travels at a speed of 67.5 miles per hour, multiply 67.5 by 3.25.

67.5 × .25 = 16.87567.5 × 3 = 202.516.875 + 202.5 = 219.375

Hope this helps!

Answer:

False

Step-by-step explanation:

hope it helps

....

Answer:

a = 6 and b = -1.

Step-by-step explanation:

To find the maximum value of y = -x²+ ax + b we differentiate it with respect to x to find the value of x at which it is maximum.

So dy/dx = d(-x²+ ax + b)/dx = -2x + a

we equate it to zero.

-2x + a = 0

-2x = -a

a = 2x

Now, given that x = 3 at the maximum value,

a = 2x = 2(3) = 6

Also, substituting y = 8 and x = 3 into y, we have

y = -x²+ ax + b

8 = -(3)²+ a(3) + b

8 = -9 + 3a + b

3a + b = 8 + 9

3a + b = 17

So, b = 17 - 3a

substituting a = 6, we have

b = 17 - 3(6)

b = 17 - 18

b = -1

So, a = 6 and b = -1.

Answer:

Step-by-step explanation:

Well is she wanted to make $80 “b” she would have to garden for 16 hours to make a maximum of $80

“C” if she wanted to make it out of babysitting she would have to work the same for 8 hours if she babysit

Workout : b part = 10+10+10+10+10+10+10+10 Key:10=2

:c part = 20+20+20+20. Key:20=2

Sorry I didn’t do a but just add all the things above and u get your answer

Answer:

b

Step-by-step explanation:

Answer:

25% probability that you complete the course

75% probability that you do not complete the course

Step-by-step explanation:

If there are a total of 4 individuals entering the race and only one is able to complete the course then the probability that you will complete the course would be

1/4 = 0.25 or 25%

This is because you only represent 1 out of the 4 total participants. The opposite would be the case to calculate the probability that you will not complete the course since there are three other candidates with that could have completed it, therefore...

3/4 = 0.75 or 75%

Answer:

i think its 6 to the power of 20 but id k

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

Using h and b to represent the prices of hockey and basketball tickets, respectively, the two purchases are ...

  2h +b = 173.01

  h +2b = 162.99

Subtracting the second equation from twice the first gives ...

  2(2h +b) -(h +2b) = 2(173.01) -(162.99)

  3h = 183.03

  h = 61.01

Substituting that into the first equation, we can solve for b:

  b = 173.01 -2h = 173.01 -2(61.01)

  b = 50.99

The average cost of an NHL ticket was $61.01.

The average cost of an NBA ticket was $50.99.

Answer:

6^2 = 36

Step-by-step explanation:

The number that best approximates the square of 6 is 36, its actual value. The point so labelled is the appropriate point on the number line.

7.7 is the point on the number line is the best approximation for √59

A number system is defined as a system of writing to express numbers.

A number line is a picture of a graduated straight line that serves as visual representation of the real numbers.

Approximation or approximate numbers can be defined as a value that is similar to the other value but not exactly equal to it.

We need to find the approximation of √59

We have given √59

We need to remove the radical

=7.681=7.7=8

We can place the dot on 7.7 of the number line.

Hence 7.7 is the point on the number line is the best approximation for √59

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Answer:

The answer is (0,5)

Step-by-step explanation:

(0,5)

Answer:

X-intercept= (1.67,0)

Y-intercept = (0,5)

Step-by-step explanation:

Move y to the right so that it’s alone and then type it in the calculator under y= and press graph.

His salary for 40 hours per week with an hourly rate is hours x the rate:

40 hours x $22 per hour = $880 per week.

If he is paid commission, to make the same , he needs to make $880 iin commissions.

The commission rate is 4%, to find how much sales is needed divide the amount he needs to make ( $880) by the rate:

880/ 4% = 880/ 0.04 = $22,000

He needs to sell $22,000

Answer:

$4500

Step-by-step explanation:

it decreases $300 per yeae

Based on the rate of depreciation each year, the amount of depreciation of the machinery in the sixth year will be $300.

The depreciation in the second year is:

= 6,000 - 5,700

= $300

The depreciation in the third year is:

= 5,700 - 5,400

= $300

If this amount remains constant till the sixth year therefore, then it means that the sixth year depreciation amount is also $300.

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Answer:

Approximately 0.51

Step-by-step explanation:

If events A and B are independent, then P(A and B) = P(A)*P(B) is a true equation.

We're given the following

     P(A) = 0.65

     P(A and B) = 0.33

So,

P(A and B) = P(A)*P(B)

0.33 = 0.65*P(B)

P(B) = 0.33/0.65

P(B) = 0.5076923076923

which is approximate. When we round to 2 decimal places, we get 0.51

Answer:

6.98 feet that the anwers

Answer:

It will take 9 minutes

Step-by-step explanation:

18:6=3

- 1 jump every 3 minutes

3 x 3 = 9

(but I'm not sure if it is correct because i did not really understood the question)

Answer:

No solution

Step-by-step explanation:

Since cos(x) e  [-1,1],the equation has no solution in the Set of real numbers.

Answer:

7=7

Step-by-step explanation:

Answer:

We have to see the circle in order to help you

Step-by-step explanation:

yesyes jehdbshhshshshshsgs

Answer:

(a) 7 essays and 29 multiple questions

(b) Your friend is incorrect

Step-by-step explanation:

Represent multiple choice with M and essay with E.

So:

[tex]M + E= 36[/tex] --- Number of questions

[tex]2M + 6E = 100[/tex] --- Points

Solving (a): Number of question of each type.

Make E the subject of formula in [tex]M + E= 36[/tex]

[tex]E = 36 - M[/tex]

Substitute 36 - M for E in [tex]2M + 6E = 100[/tex]

[tex]2M + 6(36 - M) = 100[/tex]

[tex]2M + 216 - 6M = 100[/tex]

Collect Like Terms

[tex]2M - 6M = 100 - 216[/tex]

[tex]-4M = - 116[/tex]

Divide both sides by -4

[tex]M = \frac{-116}{-4}[/tex]

[tex]M = 29[/tex]

Substitute 29 for M in [tex]E = 36 - M[/tex]

[tex]E = 36 - 29[/tex]

[tex]E = 7[/tex]

Solving (b): Can the multiple questions worth 4 points each?

It is not possible.

See explanation.

If multiple question worth 4 points each, then

[tex]2M + 6E = 100[/tex] would be:

[tex]4M + xE = 100[/tex]

Where x represents the number of points for essay questions.

Substitute 7 for E and 29 for M.

[tex]4 * 29 + x * 7 = 100[/tex]

[tex]116 + 7x = 100[/tex]

Subtract 116 from both sides

[tex]116-116 + 7x = 100 -116[/tex]

[tex]7x = 100-116[/tex]

[tex]7x = -16[/tex]

Make x the subject

[tex]x = -\frac{16}{7}[/tex]

Since the essay question can not have worth negative points.

Then, it is impossible to have the multiple questions worth 4 points

Your friend is incorrect.

The test contained 29 multiple choice questions and 7 essay questions.

Let x represent the number of multiple questions and y represent the number of essay questions.

Given that there are a total of 36 questions, hence:

x + y = 36    (1)

Also, the test is worth a total of 100 points, hence:

2x + 6y = 100   (2)

Solving equation 1 and 2 simultaneously gives:

x = 29, y = 7

Therefore the test contained 29 multiple choice questions and 7 essay questions.

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Answer:

18 pieces of ribbon

Step-by-step explanation:

total length of the ribbon is 4.5 meters

it will be divided into .25 meter long pieces

4.5 m / (.25 m / 1 piece) = 18 pieces

Elizabeth has a piece of ribbon that is 4.5 meters long.She wants to cut it up into pieces that are 0.25 meter long. How may pieces of ribbon will she have?

[tex]4.5 \div 0.25[/tex]

[tex] = 18[/tex]

[tex]18 \times 0.25[/tex]

[tex] = 4.5[/tex]

She will have 18 pieces of ribbon.

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Answer:

I think it has to y=mx+b

Step-by-step explanation:

Answer:

[tex]y = \frac{ - 1}{3} x - 8[/tex]

Step-by-step explanation:

slope intercept form is y=mx+b

m is the slope, so it's -1/3 because it goes down one unit and to the right two units. b is -8 because that is the point that it touches the y-axis

Answer:

may br

Step-by-step explanation:

4x+ 10=30 or 2(4x +10) =30

Answer:

see explanation

Step-by-step explanation:

Given that QS bisects ∠ PQT = 30°

∠ PQS = ∠ TQS = 15°, thus

4x + 10 = 15 ( subtract 10 from both sides )

4x = 5 ( divide both sides by 4 )

x = [tex]\frac{5}{4}[/tex] = 1.25

Answer:

A service business because it lists the products for online purchase

Step-by-step explanation:

Adele does not manufacture the clothes that she sells, but rather acquires and resells them electronically. Therefore, she provides a clothing sales service, forming part of the third sector of the economy. If, on the other hand, she manufactured the clothes, her business would be manufacturing and, therefore, she would be part of the second sector of the economy, as she would be carrying out a type of industry.

Answer:

a merchandising business because it resells clothes at retail prices

Step-by-step explanation:

This is a merchandising business because Adele buys clothes at one price and resells them at a higher retail price.

Answer:

no solutions

Step-by-step explanation:

these lines, when graphed, are parallel (notice their slopes are the same)

parallel lines will never intersect or produce areas of intersection, resulting in no solutions

Since the values on both sides are different, hence the  the system of inequalities have NO solutions

Inequalities are equation that does not include only the equal sign.

Given the following inequalities

y > - 1/3x+5 and y< - 1/3 x -1

In order to determine whether the equations have a solution, we need to equate both expressions and solve

Equate

-1/3x + 5 = -1/3x - 1

-1/3x + 1/3x  = -1 - 5

0x = -6

Since the values on both sides are different, hence the  the system of inequalities have NO solutions

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Answer:

1 hour and 15 minutes

Step-by-step explanation:

For the hours he had slept the last is around 7 hours and 15 minutes and the one where he slept the most is around 8 hours and 30 minutes.  Subtract these two numbers in which your answer is that Tom slept for 1 hour and 15 minutes more than the one where he slept the least.

Answer:

2 hours

Step-by-step explanation: