Elon works in New York City and makes $45 per hour. He works in an office and must get his suit dry cleaned everyday for $75. If he wants to make at least $260 a day, how many hours must he work?

Write the inequality that represent the situation above. (Use the variable h)

How many hours will the Elon need to work each day? (Round your answer to the nearest tenth)

Answer:

112.5miles

Step-by-step explanation:

4hrs=8 half hours

And 1hr30min=3 half hours

If a car travels 300miles in 8 half hours with the mathematical expression of

300miles-8hh

Then for the 3 half hour we have

X-3hh

Comparing the two

300miles-8hh

Xmiles-3hh

By cross multiplying

8×X=3×300

8X=900

X=900/8

X=112.5miles

Answer:

7

Step-by-step explanation:

Hope this helps!!

The simplified value of the expression 1/2 / ( x² - y²) - 5/2(x² - y²) is -2/x² + 2/y²  .

Like terms in an algebraic expression is defined as those terms that have same variable and that variable has the same power .

For Example : 5y,2y are like terms .

In the given question 1/2 / ( x² - y²) - 5/2(x² - y²) the first term is a complex fraction,

[tex]=\frac{\frac{1}{2} }{(x^{2}-y^{2} ) } -\frac{5}{2(x^{2} -y^{2}) }[/tex]

Simplifying the complex fraction we get ,

= 1/2(x² -y²) -5/2(x² -y²)

= 1/(2x² - 2y²) -5/(2x² -2y²)

On further simplifying

= 1/2x² -1/2y²- 5/2x²  +5/2y²

On combining the like terms of x² and y².

= 1/2x² - 5/2x² -1/2y²  +5/2y²

taking LCM of like terms as 2x² and 2y².

=(1-5)/2x²+(-1+5)/2y²

= (-4)/2x² + 4/2y²

=-2/x² + 2/y²

Therefore , the simplified value of the expression 1/2 / ( x² - y²) - 5/2(x² - y²) is -2/x² + 2/y²  .

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The simplification of difference of the given two rational expressions [tex]\frac{x-1}{x+5}-\frac{x+3}{x^{2} +6x+5}[/tex]  is equal to [tex]\frac{x^{2}- x-4}{(x+5)(x+1)}[/tex]. Restriction on the variables is given by x≠ -5,  x≠ -1.

As given in the question,

Given expression is [tex]\frac{x-1}{x+5}-\frac{x+3}{x^{2} +6x+5}[/tex]

Simplify the given two rational expressions by factorizing them,

[tex]\frac{x-1}{x+5}-\frac{x+3}{x^{2} +6x+5}\\\\= \frac{x-1}{x+5}-\frac{x+3}{x^{2} +5x +x+5}\\\\= \frac{x-1}{x+5}-\frac{x+3}{(x+5)(x+1)}\\\\= \frac{x^{2} -1-(x+3)}{(x+5)(x+1)}\\\\= \frac{x^{2}- x-4}{(x+5)(x+1)}[/tex]

Restriction on the variables is given by  x≠ -5,  x≠ -1.

Therefore, the  simplification of difference of the given two rational expressions [tex]\frac{x-1}{x+5}-\frac{x+3}{x^{2} +6x+5}[/tex]  is equal to [tex]\frac{x^{2}- x-4}{(x+5)(x+1)}[/tex]. Restriction on the variables is given by x≠ -5,  x≠ -1.

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Answer:

From the Soldier's point of view, the American Civil War was not a continuous battle. Instead, it was long monotonous marches and long residency in camps punctuated by the terror and chaos of combat. When winter set in and the campaigning season came to a close, most Soldiers counted on a long, cold stay in a winter camp. The four log cabins at the center of the Army Heritage Trail represent the types of buildings which Soldiers in both the Union and the Confederate Armies spent the long dreary months of winter. The cabins are modeled after images from the USAHEC collection, including the Army of the Potomac's winter camp at Brandy Station and the Confederate camp at Centerville

The coordinates of N so that MN is 1/3 of MP are:

(0,7/4)

In geometry line segment is a part of a line that is bounded by two end points, and contains every point on the that is between end points.

Given, coordinates of M(-3,-2)

and coordinates of P(9,13)

so we have,

x₁ = -3

y₁ = -2

x₂ = 9

y₂ = 13

Also we know that MN is 1/3 of MP

⇒ MN/MP = 1/3 = mn

here, m= 1 and n=3

Let the coordinates of N be (x,y)

Therefore,

(x,y)  = (nx₁+mx₂)/(m+n) , (ny₁+my₂)/m+n

⇒ (x,y) = (3(-3)+1(9)/1+3) , (3(-2)+1(13)/1+3)

⇒ (x,y) = (-9+9/4) , (-6+13/4)

⇒ (x,y) = (0,7/4)

Thus the coordinates of N so that MN is 1/3 of MP is (0,7/4)

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Answer:

0, -7 or Slope is Undefined

Step-by-step explanation:

y2 - y1 / x2 - x1

(x2 - y2) (x1 - y1)

The simplied form of the given fraction will be -3 11/40.

There is a fraction, containing numerator(upper value) and denominator(lower value).  When the numerator is less than the denominator, the fraction is called proper fraction, otherwise it is called improper fraction. A proper fraction is also called fraction which is less than 1 an improper fraction is ≥ 1. A mixed fraction contains a sum of whole number and a proper fraction.

WE have been given an expression as;

−3/8+(−2 9/10)

Then first we will solve the mixed fraction;

−2 9/10 = -29/10

Now solve the fraction;

−3/8+-29/10

-131/40

In mixed number form:

-3 11/40

Hence, The simplied form of the given fraction will be -3 11/40.

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The amount of you swam is +15 feet and your friend swam is -6 feet.

Given that you move forward 15 feet and your friend is not a strong swimmer, so he moves back 6 feet.

The arithmetic operators means performing an addition, subtraction, multiplication, division, exponentiation, and modulus operations.

It is given that you move the forward that means you move in positive direction.

So, you move forward means you move +15 feet.

It is also given that your friend is not a strong swimmer, so he moves back that means he move in negative direction.

So, your friend moves backward means he move -6 feet.

Hence, you move forward 15 feet is +15 feet and your friend is not a strong swimmer, so he moves back 6 feet is -6 feet.

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Answer:

780 ≥ 58.53x + 566.83

Step-by-step explanation:

He has $780 that he can spend, so the total must be less than or equal to 780.

Let x = number of biking outfits.

Costs:

Bicycle: $490.50

Reflectors: 4 × $14.98 = $59.92

Gloves $16.44

Outfits: $58.53x (The cost of x outfits is 58.53x)

The total he spends is:

490.5 + 59.92 + 16.44 + 58.53x =

= 58.53x + 566.86

This total has to be less than or equal to $780.

58.53x + 566.86 ≤ 780

This can be written as

780 ≥ 58.53x + 566.83

4 cups of pasta are used per cup of sauce.

Given,

Greta uses 3 cups of pasta for every 3/4 cup of sauce.

We need to find how much pasta she uses per cup of sauce.

Example:

12 apples = 2 basket ____(1)

For 5 baskets:

We need to make 2 baskets = 5 baskets.

We can divide by 2 and multiply 5 on both sides on (1).

5/2 x 12 apples = 5/2 x 2 baskets

30 apples = 5 baskets.

We have,

3 cups of pasta = 3/4 cup of sauce

We need to make 3/4 cup of sauce as 1 cup of sauce.

Multiply 4/3 on both sides.

4/3 x 3 cups of pasta = 4/3 x 3/4 cup of sauce

4 cups of pasta = 1 cup of sauce

Thus 4 cups of pasta are used per cup of sauce.

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Answer:

[tex]10 { }^{ - 5} [/tex]

Step-by-step explanation:

that is the answer above

Answer: x = -10

Step-by-step explanation:

Answer:

(- 10, 10 )

Step-by-step explanation:

6x + 5y = - 10 ( subtract 6x from both sides )

5y = - 10 - 6x → (1)

3x + 5y = 20 → (2)

substitute 5y = - 10 - 6x into (2)

3x - 10 - 6x = 20

- 3x - 10 = 20 ( add 10 to both sides )

- 3x = 30 ( divide both sides by - 3 )

x = - 10

substitute x = - 10 into (2) and solve for y

3(- 10) + 5y = 20

- 30 + 5y = 20 ( add 30 to both sides )

5y = 50 ( divide both sides by 5 )

y = 10

solution is (- 10, 10 )

A parabola with a vertical axis of symmetry is graphed at the end of the answer.

The equation of a quadratic function, of vertex (h,k), with a vertical axis of symmetry, is given by:

y = a(x - h)² + k

In which a is the leading coefficient.

The most simple example of this is the parabola y = x², which is graphed at the end of the answer.

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Answer:

y = 2016 - 112x

Step-by-step explanation:

because he is paying 112 dollars each month for 18 months

y= 2016 -112x

for instance, he paid it for 6 months we would say

y = 2016 - 112(6)

y = 2016 - 672

y = 1334

so, y = 2016 - 112x

The sum of an infinite geometric series is twice its first term then the common ratio(r) be 1/2.

An infinite geometric series is the outcome of an unlimited geometric sequence. This series wouldn't have a finish. It is possible to calculate the sum of all finite geometric series. The terms in the sequence will grow steadily larger, but adding the larger numbers together will not provide a solution if the common ratio of an infinite geometric series is greater than one.

Given: S = 2a₁

a₁ be the first term

r be the common ratio

Let the equation be S = a₁/1-r

2a₁ = a₁/1-r

substitute the values in the above equation, we get

2 = 1/1-r

2 - 2r = 1

2r = 1

The value of r = 1/2

Therefore, the common ratio(r) be 1/2.

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Answer:

Option 2 [tex]x[/tex] = 15, [tex]y[/tex] = 3

Step-by-step explanation:

Vertical angles are equivalent. Thus [tex]4x+10y[/tex] = 90. To solve for [tex]x[/tex], we set [tex]6x[/tex] = 90, since adjacent angles equal 180. This gives us 15 as x. Plugging 15 into the first equation we get that y is equal to 3.

Answer: 2 quarts of pure antifreeze are needed.

Step-by-step explanation:

The slope of the given problem is 14

It is a problem of linear regression Line

y = a +by

where a = ∑Y - b ∑X / N  

and b = N ∑XY - (∑X×∑Y)/ ( N∑x²- (∑X)  

      Month(X) Temperature (y)  X²              XY

               1                   42                        1                  42

               2                  56                        4                 112

               3                  70                         9                210

               4                  84                        16               336

Total        10               252                     30               700

Number of observation (n) = 4

So, b = 4(700) - (10)(252) / ( 120 - 10²)

         = 2800-2520/20

        = 280/20

         = 14

b = 14

Now a=  252 - (14)10/ 4

          =112 /4

         = 28

So, The linear regression line is

         y= 28 + 14x

Slope = 14

The slope here is positive which means increase in period or moving forward in month is increasing the average temperature of the month.

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The slope is 1/2 and the y-intercept is 3/4 in the equation  - [ (1/2)x - y ] = 3/4.

A line's steepness and direction are determined by the slope of the line. Without actually using a compass, determining a line's slope in a coordinate plane allows one to anticipate whether a line is parallel, perpendicular, or not.

The change in a line's y coordinate relative to its change in x coordinate is referred to as the line's slope. Δy is the net change in the y coordinate, while Δx is the net change in the x coordinate.  

Therefore,

m =  y₂-y₁/x₂-x₁ (where m denotes the slope) can be used to express how the y coordinate changes in relation to the x coordinate.

Be aware that tan ∅ = y/x

We also refer to this tan as the line's slope

We know that the equation for slope(m) and y - intercept(c) of a line is given by :

y = mx + c

Here given the equation - [ (1/2)x - y ] = 3/4, lets simplify

⇒ - [ (1/2)x - y ] = 3/4

⇒ -(1/2)x + y  = 3/4

⇒ y =  (1/2)x + 3/4

Hence, the slope is 1/2 and the y-intercept is 3/4 in the equation  - [ (1/2)x - y ] = 3/4

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The solution of the given system of equations is (1, 3)

We can solve a system of equations using:

- graphical method

- elimination method

- substitution method

The given system of equations:

y = 4 - x    ....... (1)

3x + y = 6  ....... (2)

To use elimination method, add x to both sides of equation (1)

x + y = 4 ....... (3)

Substract equation (3) from equation (2)

3x + y = 6

x + y = 4   –

2x       = 2

 x       = 1

Substitute x = 1 into equation (1)

y = 4 - x

  = 4 - 1 = 3

Thus the solution is (1,3)

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Answer: 22

Step-by-step explanation: 143 divided by 6.50 = 22, therefore our answer is 22

Answer:

is it -180?

I don't remember most of this stuff!

sorry if its wrong

Step-by-step explanation:

Answer:

Solutions below.

Step-by-step explanation:

a) To solve this question, we can use the formula.

Average Cost per Bracelet = Total Price ÷ Number of Bracelets.

Toy Barn

Average Cost = $5.40 ÷ 6 = $0.90 per bracelet

Dollar Deals

Average Cost = $10.50 ÷ 11 = $0.95 per bracelet (rounded off to 2 decimal places)

b) The better deal comes with a lower price per bracelet, in this case, Toy Barn has a better deal.

Answer:

C. 5/12

Step-by-step explanation:

Let's solve your equation step-by-step.

3/5a= 1/4

Step 1: Multiply both sides by 5/3.

(5/3)*(3/5a)=(5/3)*(1/4)

a = 5/12

Answer:

C

Step-by-step explanation:

Just the spread of normally distributed data tells us nothing about the mean, mode or median, so answers A, B, and E are out of question.

The range is based on the difference between the highest and lowest elements. As there can be big outliers, we have no idea if D is true, although we expect distributions with bigger spread to generally exhibit bigger ranges.

We're left with answer C. Standard deviation is a measure of "how much the data can deviate from the mean". It's also one of the measures of spread. We expect data that's more spread out (higher spread) to have a higher standard deviation.

Answer:

Point form:

(2, 9)

Equation form:

x = 2,y = 9

Step-by-step explanation: