please assist me with this math problem​

Answer:

130 earrings

Step-by-step explanation:

P=450

450=5n-200

+200     +200

650=5n

/5      /5

n= 130

She would have to sell 130 earrings in order to earn a profit of $450.

Profit is the money earned by a business when its total revenue exceeds its total expenses.

Given is Lena who sells earrings from a booth at the arts fair. She pays $200 to rent the booth. She makes $5 from each pair of earrings she sells. Her profit [P] can be found using the following equation (where n is the number of pairs of earrings sold) → P = 5n - 200.

Now, we have the following equation -

P = 5n - 200.

Now, for a profit of $450, substitute [P] by 450 as -

450 = 5n - 200

5n = 450 + 200

5n = 650

n = 130

Therefore, she would have to sell 130 earrings in order to earn a profit of $450.

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b) 30

Hi there !

the side opposite the angle of 30 is half the hypotenuse

x = 2×15

x = 30

Good luck !

Answer:

EEEEEEEEEEEEEEEEEEEEEEEEEEE

Step-by-step explanation:

EEEEEEEEEEEEEEEEEEEEEEEEE

The situation is a linear equation, and the equation that describes the situation is 2n + 1 = 253

Let the smaller number be n.

So, the consecutive numbers are n and n + 1

When the numbers are added, we have:

Sum = n + n + 1

This gives

Sum = 2n + 1

The sum is 253.

So, we have:

2n + 1 = 253

Hence, the equation that describes the situation is 2n + 1 = 253

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Answer:

16

Step-by-step explanation:

Answer:

12 Car washes for $100

Step-by-step explanation:

mark brainliest please.

Answer:

12 cars for $100

Step-by-step explanation:

This is because on car with this deal would cost $8.33 while with deal 2 one car would cost $9 and you want the cheaper deal in this case.

Complete question :

A clinical psychologist has developed a new measure for assessing alcohol abuse. In a normal (non-clinical) sample, he found that his measure had a mean equal to 85 and a standard deviation equal to 15. Identify the score 25th, 75th, 95th

Answer:

1.) 25th percentile = 74.95

2.) 75th percentile = 95.05

3.) 95th percentile = 109.75

Step-by-step explanation:

Given that :

Mean (m) = 85

Standard deviation (s) = 15

The Zscore, corresponding to the percentiles given:

25th percentile score corresponds to a Zscore of - 0.67

Recall the relation:

Zscore = (x - m) / sd

x = score; m = mean = 85 ; sd = standard deviation = 15

-0.67 = (x - 85) / 15

15 * - 0.67 = x - 85

-10.05 = x - 85

x = 74.95

2.) 75th percentile ; Zscore = 0.67

0.67 = (x - 85) / 15

15 * 0.67 = x - 85

10.05 = x - 85

x = 10.05 + 85

x = 95.05

3.) 95th percentile ; Zscore = 1.65

1.65 = (x - 85) / 15

15 * 1.65 = x - 85

24.75 = x - 85

x = 24.75 + 85

x = 109.75

Answer:

The least common denominator is 77 so the fractions would become 63/77 and 66/77.

Answer:

Option A. is correct

Step-by-step explanation:

Like terms are those terms that have same variables of same powers. Terms that are not like terms are said to be unlike terms.

For example [tex]2x^3,7x^3[/tex] are like terms and [tex]5x^2,9x^5[/tex] are unlike terms.

Given polynomial is [tex]3x^3+x^2-8x^5+2x^3-4x[/tex]

Like terms need to be combined to write the polynomial in standard form

Here, like terms are [tex]3x^3,2x^3[/tex]

Option A. is correct.

Answer:

[tex]x=\frac{3}{5}[/tex]

Step-by-step explanation:

Midpoint of a line is a point that divides it into two equal segments.

As B is the midpoint of line segment AC,

[tex]AB=BC[/tex]

Put [tex]BA=8x+9\,,\,CA=28x-3[/tex]

To find value of [tex]x[/tex], solve [tex]8x+9=28x-3[/tex]

Therefore,

[tex]8x+9=28x-3\\9+3=28x-8x\\12=20x\\x=\frac{12}{20}\\ x=\frac{3}{5}[/tex]

So, value of [tex]x[/tex] is [tex]\frac{3}{5}[/tex]

Answer -3/8, -2/3 1/2

Step-by-step explanation:

Thats least to greatest

Answer:

3/8, 2/3, 1/2

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Answer:

B. Insurance

Step-by-step explanation:

Answer:-1

Step-by-step explanation:

Answer: -2

Step-by-step explanation:

Answer:

60bracelets

Step-by-step explanation:

To solve this problem, we need to find her rate. This is the number of jewelries she makes per unit of time;

         Rate  = [tex]\frac{number of jewelries}{time taken }[/tex]

 Number of jewelries  = 12 bracelets

  time  = 4hrs

     Input the parameters:

           Rate  = [tex]\frac{12}{4}[/tex]   = 3bracelets/hr

She works 5hrs for 4 Thursdays;

   Number of hours worked  = 5 x 4 = 20hrs

Now, working at a rate of 3bracelets/hr for 20hrs, the number of bracelets she will produce is given as;

  Number of bracelets  = number of hours x rate

                                       = 20 x 3

                                       = 60bracelets

Answer:

the stretch or compression of a quadratic, and if it's opening up to down.

Step-by-step explanation:

Answer:

A; (X=5)

Step-by-step explanation:

Move the constants and variable terms to one side:

3x-5= -2x+10

-5+10= -2x+ 3x

Combine like terms:

5=x or x=5

Answer:

The answer is C

Step-by-step explanation:

If you take the equation and simplify it.

3x-5=-2x+10

You would minus 3x from both sides, leaving the equation like

-5=-5x+10

Then you would minus 10 from both sides, leaving the equation like

-15=-5x

If you wanted to go further you could divide both sides by -1 and get rid of the negatives. Leaving the equation like

15=5x

Then to put it into the simpleist   form you would divide both sides by 5, leaving the equation like

3=x

I hope this helps.

Answer:

18 min

Step-by-step explanation:

Answer:

f(x) is always 5.

Step-by-step explanation:

The formula has a fixed value. Y is the f(x) in the function, and since there is no X, then Y is as said: 5. For example, when X is -7, the f(x), or Y, is still 5, and so on.

Answer:

65

Step-by-step explanation:

Analysing the Question:

We are given the following equations:

x - y = 4

x + y = 9

writing these equations in slope-intercept form

y = x - 4

y = -x + 9

the general form of the slope-intercept equation is :   y = mx + b (where m is the slope and b is the y-intercept)

Hence, we can say that the for Equation 1:

Slope  = 1

y-intercept = -4

For equation 2:

Slope = -1

y-intercept = 9

Finding if the lines are Perpendicular, parallel or neither

If the slope of the lines is equal, the lines are parallel

If the slope of the lines is the additive inverse (negative) of each other, the lines are perpendicular

Since the slopes of the 2 lines are the additive inverse (negative) of each other, the lines are perpendicular     [slope 1 = 1    , slope 2 = -1]

Answer:

Her new position is 37 feet below the cave entrance

Step-by-step explanation:

Let us solve the question

∵ The cave entrance is the zero position

∵ Anna is in 42 feet below the cave entrance

→ Below zero means negative

∴ Anna is in -42 feet

∵ She descends 10 feet

→ Descend means negative

∴ She is in -42 + -10 = -52 feet

∵ She ascends 15 feet

→ Ascend means positive

∴ She is in -52 + 15 = -37 feet

→ -37 means she is in below the cave entrance by 37 feet

∴ Her new position is 37 feet below the cave entrance

Answer:

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

Step-by-step explanation:

The correct statement is described below:

Find the absolute maximum and minimum values of the function below:

[tex]f(x) = x^{3}-9\cdot x^{2}+ 3[/tex], [tex]2 \leq x \leq 12[/tex]

Given that function is a polynomial, then we have the guarantee that function is continuous and differentiable and we can use First and Second Derivative Tests.

First, we obtain the first derivative of the function and equalize it to zero:

[tex]f'(x) = 3\cdot x^{2}-18\cdot x[/tex]

[tex]3\cdot x^{2}-18\cdot x = 0[/tex]

[tex]3\cdot x \cdot (x-6) = 0[/tex] (Eq. 1)

As we can see, only a solution is a valid critical value. That is: [tex]x = 6[/tex]

Second, we determine the second derivative formula and evaluate it at the only critical point:

[tex]f''(x) = 6\cdot x -18[/tex] (Eq. 2)

x = 6

[tex]f''(6) = 6\cdot (6)-18[/tex]

[tex]f''(6) =18[/tex] (Absolute minimum)

Third, we evaluate the function at each extreme of the given interval and the critical point as well:

x = 2

[tex]f(2) = 2^{3}-9\cdot (2)^{2}+3[/tex]

[tex]f(2) = -25[/tex]

x = 6

[tex]f(6) = 6^{3}-9\cdot (6)^{2}+3[/tex]

[tex]f(6) = -105[/tex]

x = 12

[tex]f(12) = 12^{3}-9\cdot (12)^{2}+3[/tex]

[tex]f(12) = 435[/tex]

There are an absolute minimum (x = 6) and an absolute maximum (x = 12).

Answer:

m<GFC = 69 degrees

Step-by-step explanation:

The angle with 37 degrees is congruent with the angle on the left of 74 because of the Alternate Interior Angles Postulate

The last angle in the triangle that you don't know the degrees of is on the right of angle 74 because of the Alternate Interior Angles Postulate

So 37+74+ (the degree we don't know of the triangle) = 180 because of linear triples

180 - (37+74) = 69

So the angle on the right of angle 74 = 69

So m<GFC = 69 degrees

Answer:

Its 69

Step-by-step explanation:

the three measures will add up to 180 so all you hace to do is add the angles given and subtract that from 180 to find x

Answer:

10.8

Step-by-step explanation:

86.4÷9=9.6

183.6 - 86.4=97.2

97.2 ÷ 9.6=10.8

10.8x9=97.2

97.2+86.4=183.6

Answer:

current market price:

PV of face value = $1,000 / (1 + 3.5%)²⁶ = $

PV of coupon payments = $45 x 16.89035 (PV annuity factor, 3.5%, 26 periods) = $760.07

current market price = $408.84 + $760.07 = $1,168.91

price in 1 year:

PV of face value = $1,000 / (1 + 3.5%)²⁴ = $437.96

PV of coupon payments = $45 x 16.05837 (PV annuity factor, 3.5%, 24 periods) = $722.63

market price = $437.96 + $722.63 = $1,160.59

price in 3 years:

PV of face value = $1,000 / (1 + 3.5%)²⁰ = $502.57

PV of coupon payments = $45 x 14.2124 (PV annuity factor, 3.5%, 20 periods) = $639.56

market price = $502.57+ $639.56 = $1,142.13

price in 8 years:

PV of face value = $1,000 / (1 + 3.5%)¹⁰ = $708.92

PV of coupon payments = $45 x 8.31661 (PV annuity factor, 3.5%, 10 periods) = $374.25

market price = $708.92 + $374.25 = $1,083.17

price in 12 years:

PV of face value = $1,000 / (1 + 3.5%)² = $933.51

PV of coupon payments = $45 x 1.89969 (PV annuity factor, 3.5%, 2 periods) = $85.49

market price = $933.51 + $85.49 = $1,019

price in 13 years:

market price = $1,000 + $45 = $1,045

current market price:

PV of face value = $1,000 / (1 + 4.5%)²⁶ = $318.40

PV of coupon payments = $35 x 15.14661 (PV annuity factor, 4.5%, 26 periods) = $530.13

current market price = $318.40 + $530.13 = $847.53

price in 1 year:

PV of face value = $1,000 / (1 + 4.5%)²⁴ = $347.70

PV of coupon payments = $35 x 14.49548 (PV annuity factor, 4.5%, 24 periods) = $507.34

market price = $347.70 + $507.34 = $855.04

price in 3 years:

PV of face value = $1,000 / (1 + 4.5%)²⁰ = $414.64

PV of coupon payments = $35 x 13.00794 (PV annuity factor, 4.5%, 20 periods) = $455.28

market price = $414.64+ $455.28 = $869.92

price in 8 years:

PV of face value = $1,000 / (1 + 4.5%)¹⁰ = $643.93

PV of coupon payments = $35 x 7.91272 (PV annuity factor, 4.5%, 10 periods) = $276.95

market price = $643.93 + $276.95 = $920.88

price in 12 years:

PV of face value = $1,000 / (1 + 4.5%)² = $915.73

PV of coupon payments = $35 x 1.87267 (PV annuity factor, 4.5%, 2 periods) = $65.54

market price = $915.73 + $65.54 = $981.27

price in 13 years:

market price = $1,000 + $35 = $1,035

Answer:

Step-by-step explanation:

A...................................

∠MIH and ∠IHS are same side interior angles and sum up to 180° as per property, therefore

B...................................

∠AVM and ∠VAS are same side interior angles

and ∠VAS and ∠LAH are vertical angles, which are equal as per property of vertical angles, so:

C...................................

Obtuse angle at the intersection of AV and HI, if name the intersection point O:

Answer:

-5n+9.1

Step-by-step explanation:

- - = +

Answer:

3 over 100

Step-by-step explanation: