Please help I don’t know how to do this

Answer:

its 90

hope this helped

Step-by-step explanation:

Answer:90

Step-by-step explanation:

Answer:

125.50 + 12.25 = 137.75

137.75/109 X 108.25 = 149.114375

total cost = $149.11

149.11 - 137.75= 11.36

sales tax = $11.36

Answer: $11.45

Step-by-step explanation:

Arriving 15minutes late simply means 15/60 = 1/4 of the wages has been lost. We then multiply 1/4 by each person's wage. This will be:

Derek = 1/4 × $10.00

= $2.50

Sam = 1/4 × $11.80

= $2.95

Penny = 1/4 × $11.00

= $2.75

Zachary = 1/4 × $13.00

= $3.25

The amount lost will be:

= $2.50 + $2.95 + $2.75 + $3.25

= $11.45

The solution to the inequality f(x) ≤ 0 is the interval [-6, 2]. In other words, the values of x that satisfy the inequality are those that lie between -6 and 2, inclusive.

To solve the inequality f(x) ≤ 0, we need to find the values of x for which the function f(x) is less than or equal to zero.

We start by factoring the quadratic expression f(x) = x^2 + 4x - 12:

f(x) = (x + 6)(x - 2)

Setting this expression to zero, we get:

(x + 6)(x - 2) = 0

This gives us two solutions: x = -6 and x = 2.

Now, we need to determine the sign of f(x) in the intervals between these two solutions. We can use a sign chart to do this:

x f(x)

-∞ +

-6 0

2 0

+∞ +

From the sign chart, we see that f(x) is positive for x < -6 and for x > 2, and it is negative for -6 < x < 2.

To summarize, the solution to the inequality f(x) ≤ 0 for the function f(x) = x^2 + 4x - 12 is the interval [-6, 2].

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Given:

A medical researcher needs 7 people to test.

15 people have volunteered for the test.

To find:

We need to find a number of ways to select 7 from 15 people.

Explanation:

The number of ways to select 7 from 15 people can be found by the given formula.

Substitute n=1`5 and r=7 in the formula.

Final answer:

The number of ways = 6435 ways.

The two events are independent.

To determine if the two events, picking a number between 1000 and 5000 and flipping a coin, are independent or dependent, we need to examine their relationship.

The events are independent if the outcome of one event does not affect the outcome of the other event.

In this case, picking a number between 1000 and 5000 has no influence on the outcome of flipping a coin, and flipping a coin does not affect the number you pick.

Therefore, these two events are independent.

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Given:

X W

2.0 3

2.5 3

1.5 3

3.0 3

2.0 8

To find the weighted mean, use the formula:

Multiply the weight by the data values then add up the weights.

Divide the product by the sum of the weights.

X W X*W

2.0 3 6.0

2.5 3 7.5

1.5 3 4.5

3.0 3 9.0

2.0 8 16.0

------ --------

20 43

The weighted mean is = 2.15

ANSWER:

X = 2.15

The probability that less than 9 but more than 7 bulbs from the sample are defective is 0.8944.

The formula to find the probability of x number of defective bulbs in a sample of n bulbs is as follows:

P(x) = [\(n \choose x\) * p^x * (1-p)^(n-x)], where \(n \choose x\) is the combination of n and x.

So, The probability of x < 9 defective bulbs in a sample of 14 bulbs is given as follows:

P(x<9) = P(x=0) + P(x=1) + P(x=2) + P(x=3) + P(x=4) + P(x=5) + P(x=6) + P(x=7)

Therefore, the probability that less than 9 bulbs from the sample are defective is

P(x<9) = [\(14 \choose0\) * (0.2)^0 * (0.8)^14] + [\(14 \choose1\) * (0.2)^1 * (0.8)^13] + [\(14 \choose2\) * (0.2)^2 * (0.8)^12] + [\(14 \choose3\) * (0.2)^3 * (0.8)^11] + [\(14 \choose4\) * (0.2)^4 * (0.8)^10] + [\(14 \choose5\) * (0.2)^5 * (0.8)^9] + [\(14 \choose6\) * (0.2)^6 * (0.8)^8] + [\(14 \choose7\) * (0.2)^7 * (0.8)^7]= 0.8962

Similarly, the probability that more than 7 bulbs from the sample are defective is:

P(x>7) = P(x=8) + P(x=9) + P(x=10) + P(x=11) + P(x=12) + P(x=13) + P(x=14)

Therefore, the probability that more than 7 bulbs from the sample are defective is

P(x>7) = [\(14 \choose8\) * (0.2)^8 * (0.8)^6] + [\(14 \choose9\) * (0.2)^9 * (0.8)^5] + [\(14 \choose10\) * (0.2)^10 * (0.8)^4] + [\(14 \choose11\) * (0.2)^11 * (0.8)^3] + [\(14 \choose12\) * (0.2)^12 * (0.8)^2] + [\(14 \choose13\) * (0.2)^13 * (0.8)^1] + [\(14 \choose14\) * (0.2)^14 * (0.8)^0]= 0.0005

Therefore, the probability that less than 9 but more than 7 bulbs from the sample are defective is:

P(8≤x≤7) = P(x<9) - P(x≤7)

P(8≤x≤7) = P(x<9) - [P(x=0) + P(x=1) + P(x=2) + P(x=3) + P(x=4) + P(x=5) + P(x=6) + P(x=7)]= 0.8962 - 0.0018= 0.8944 (rounded to four decimal places)

Therefore, more than 7 out of the sample have a probability of failure, but less than 9 out of the sample probably have a failure.

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Answer:

Profit on cost will be = 33.33%

Each factored version of a basic quadratic equation therefore contains two zeros. an equation with a degree 2 single variable. With x being the variable and a, b, and c being constants (a 0), it has the general form ax2 + bx + c = 0.

A quadratic equation is a second-order polynomial equation in one variable that goes like this: x ax2 + bx + c=0, where a 0. Given that it is a second-order polynomial equation, the algebraic fundamental theorem ensures that it has at least one solution. The resolution could be simple or complicated.

given

1) y = \(x^{2} - 9x -36\)

= y = \(x^{2} -12x + 3x -36\\x(x+3)-12(x+3)\\(x+3)(x-12)\)

2) y =\(x^{2} +5x -24\\x^{2} +8x-3x -24\\x(x+8)-3(x+8)\\(x+8)(x-3)\)

so each simple quadratic equations to factored form has 2 zeros .

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The statement "The normal force is equal to the perpendicular component of the object's weight, which decreases as the angle of inclination increases" is true.

As the angle of inclination increases, the object's weight can be divided into two components: one perpendicular to the inclined surface (the normal force) and one parallel to it. As the angle increases, the perpendicular component (normal force) decreases, while the parallel component increases.

So to directly answer your question, the normal force is never equal to the weight of the object on an inclined plane (unless you count the limiting case of level ground). It is equal to the weight of the object times the cosine of the angle the inclined plane makes with the horizontal.

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Eliminate \(y\).

\(u + v = (3x - 4y) + (x + 4y) = 4x \implies x = \dfrac{u+v}4\)

Eliminate \(x\).

\(u - 3v = (3x - 4y) - 3 (x + 4y) = -16y \implies y = \dfrac{3v-u}{16}\)

The Jacobian for this change of coordinates is

\(J = \begin{bmatrix} x_u & x_v \\ y_u & y_v \end{bmatrix} = \begin{bmatrix} \dfrac14 & \dfrac14 \\\\ -\dfrac1{16} & \dfrac3{16} \end{bmatrix}\)

with determinant

\(\det(J) = \dfrac14\cdot\dfrac3{16} - \dfrac14\cdot\left(-\dfrac1{16}\right) = \dfrac1{16}\)

Answer:

\( y = 10x \)

Step-by-step explanation:

Finding the slope (m) of the line the following points in the line, (0, 0) and (2, 20):

\( slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{20 - 0}{2 - 0} = \frac{20}{2} = 10 \)

y-intercept (b) is 0. The line intercepts the y-axis at 0. Thus, b = 0.

Substitute m = 10 and b = 0 in \( y = mx + b \)

The equation in slope-intercept form for the graph would be:

✅\( y = 1x + 0 \)

\( y = 10x \)

The samples must be dependent is the false assumptions all other assumptions about the two-way ANOVA is correct. Option A is the correct answer.

According to the levels of two categorical variables how the mean of quantitative variables changes is estimated by A two-way ANOVA. When you want to know how two independent variables, in combination, affect a dependent variable we can use a two-way ANOVA.

The samples must be dependent is the false assumption because samples are supposed to be independent, not dependent multicollinearity is minimized. the assumption of the two-way ANOVA is the Independence of variables, Homoscedasticity, and Normal distribution of variables.

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Answer:

Step-by-step explanation:

answer=

5x+1=6

5x=6-1

5x=5

x=1

Square root of 1 is 1

Answer:

√5x+1 = 6

(√5x+1)2 = (6)2

5x+1 = 36

5x  -35 = 0

 Add  35  to both sides

     5x  = 35

Divide both sides by 5

     solution is :

    x = 7

Step-by-step explanation:

Answer:

i just want the cookie so can i have it ? ._.

Step-by-step explanation:

Angle A is 19 degrees.

Angle C is 90 degrees.

Side a is approximately 7.83.

Side c is approximately 34.50.

To solve the right triangle given that B = 71 degrees and b = 24, we can use the trigonometric ratios sine, cosine, and tangent.

Finding Angle A:

Angle A is the complementary angle to B in a right triangle, so we can calculate it using the equation:

A = 90 - B

Substituting the given value, we have:

A = 90 - 71

A = 19 degrees

Therefore, Angle A is 19 degrees.

Finding Angle C:

Since it is a right triangle, Angle C is always 90 degrees.

Therefore, Angle C is 90 degrees.

Finding Side a:

We can use the sine ratio to find the length of side a:

sin(A) = a / b

Rearranging the equation to solve for a, we have:

a = b * sin(A)

Substituting the given values, we have:

a = 24 * sin(19)

a ≈ 7.83

Therefore, the length of side a is approximately 7.83.

Finding Side c:

Using the Pythagorean theorem, we can find the length of side c:

c^2 = a^2 + b^2

Substituting the given values, we have:

c^2 = 7.83^2 + 24^2

c^2 ≈ 613.68 + 576

c^2 ≈ 1189.68

Taking the square root of both sides to solve for c, we have:

c ≈ √1189.68

c ≈ 34.50

Therefore, the length of side c is approximately 34.50.

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Answer:

22 units²

Step-by-step explanation:

1/2b*h=area

You can either count the units or use the distance formula.

\(d = \sqrt{ {(x2 - x1)}^{2} + {(y2 - y1)}^{2} } \)

b = 4 units

h = 11 units

area = (1/2*4)*11 = 22 units²

Answer:

0 < x ≤ 10 and 0 < y ≤ 20.

Step-by-step explanation:

I did the test and got it right ma bois.

Answer: Its A

Step-by-step explanation:

Answer:

Step-by-step explanation:

Part A

for f(x) slope between points (-1,-6) and (1,0)

m= y2-y1/x2-x1 = -6-0/-1-1 = -6/-2= 3

for g(x) slope m=4 because we compare to equation y=mx+b the given equation g(x)=4x-5

The slope of f(x) is 3 and the slope g(x) is 4 so the line of g(x) is steeper

part B

The y intercept for g(x) is  (0, -5)

The equation of f(x) can be found

y-y1 =m(x-x1) take any point for example point (1,0)

y-1 =3(x-0)

y=3x+1 so the y-intercept is at (0,1)

The y-intercept for f(x) is greater at y=1 then the one of g(x) at y=-5

Answer:

Measures of the two triangles DEF and PQR

are shown in the figure. Check if the

triangles are congruent. If congruent, which

of the following statements is true? Justify.

∆ DEF ≅ ∆ PQR ;

∆ DEF ≅ ∆ QPR ;

∆ DEF ≅ ∆ RPQ. First to Answer with explanation will be marked as brainliest.

Answer: -17x-1

Step-by-step explanation: Hope this help :D

Answer:

-17x-1

Step-by-step explanation:

Answer:

2x^2+x-1/x^2-1

x^2+11x+18/x^2-11x+18

2x^2-5x+3/x^2+4x+3

Step-by-step explanation:

1.2 and 5

Any number apart from 3 can be used to replace the ? to create a function.

In a function, the inputs do not repeat that is the input in all cases should be unique in nature.

The inputs are assigned to exactly one output for each.

Three is one of the options to create a non function as three is already an input in the given function.

Replacing the ? with 3 would create the a function would be to replace it with any number but 3.

(3,5) (2, 4) (9, 0) (3,6)

Any number apart from 3 can be used to replace the ? to create a function.

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The probability from the odds is 3/7

The value of the odds is given as

Odds = 3 to 4

Represent the odds as a fraction

So, we have the following representation

Odds = 3/4

To convert the odds to probability, we make use of the following equation

Probability = Odds/(1 + Odds)

Substitute the known values in the above equation, so, we have the following representation

Probability = (3/4)/(3/4 + 1)

Evaluate the sum

Probability = (3/4)/(7/4)

Evaluate the quotient

Probability = 3/7

Hence, the probability is 3/7

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Answer:

You Can Open up this link to find your answer!!

Step-by-step explanation:

Answer:

a) "3y-1" is not a linear equation because it is missing an equal sign. It is just an expression.

b) "x²+1=5" is not a linear equation because it contains a squared term.

c) "y<7" is not an equation at all. It is an inequality.

d) "6y+1=0" is a linear equation because it can be written in the form y = mx + b, where m is the slope and b is the y-intercept. In this case, the slope is -6/1 and the y-intercept is 1/6.