I need help in 10th grade math if you have any tips please help me

The measure of JL from the given parameters is 54

The midpoint of a line is the line that divides the line into two equal parts. If K is the midpoint of JL, then the measure of KK is equivalent to the measure of JK. Mathematically;

JK = KL

JK + KL = JL

Given the following parameters

JK=8x + 11 and

KL=14x- 1

Equate

8x+11 = 14x-1

-6x = -12

x = 2

Determine JL

JL = 2(8x+11)

JL = 2(16+11)

JL = 54

Hence the measure of JL from the given parameters is 54

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The inequality that represents the cost, c, that Mr. Daniels can spend on the class trip is; c < 300

We are told that;

Mr. Daniels is organizing a class trip.

Mr. Daniels wants to spend less than $300

Thus, if the cost that Mr. Daniels can spend on the class trip is given as c, then it means that c has to be less than the amount which he wants to spend which is $300.

Thus, since c has to be less than $300, then it means that the inequality to be used would be a less than sign which can be expressed as;

c < 300

Thus, we conclude that it is the required inequality.

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Answer:

8 seconds if tyres took 1 second each tyre as 2.5/2.5 =1

The question did specify 2 1/2 secs to fll them all up which is 1 second each x 8 = 8 sec total.

Step-by-step explanation:

2  1/2 litres = number of tyres

2 1/2 seconds taken

= if each tyre took 2 1/2 seconds the quetsion should say clear but would be

2 1/2 tyres x 2 1/2 seconds = 6.26 seconds every 2 1/2 tyres

so 8 tyres x 2 1/2 seconds = 20 seconds every 8 tyres

If the 2 1/2 seconds applied to all 2 1/2

then we need to find a multiplier for 1 tyre

Here we divide

2 1/2 / 2  1/2 = 1

8 x 1 = 8 seconds.

Answer: The correct answer is b

Step-by-step explanation:

25% off $30 is 22.50 and then when you add 7%ax it turns out to be 24.08

Answer:

The correct answer is -3.9> -4.5

Step-by-step explanation:

The length of arc is 18.85 cm.

To find the length of an arc on a circle, we need to know the central angle and the radius of the circle.

In this case, the central angle is not provided, so it is impossible to determine the length of the arc accurately.

However, if we assume that the central angle is given, we can proceed with the calculation.

Let's say the central angle is θ (in radians or degrees) and the radius of the circle is r.

The formula to calculate the length of an arc is given by:

Length of Arc = (θ/2π) \(\times\) 2πr

Simplifying the formula, we have:

Length of Arc = θr

Let's consider an example.

Suppose the central angle is 45 degrees (θ = 45°) and the radius of the circle is 24 centimeters (r = 24 cm).

We can calculate the length of the arc as follows:

Length of Arc = (45°/360°) \(\times\) 2π \(\times\) 24 cm

= (1/8) \(\times\) 2π \(\times\) 24 cm

= (1/8) \(\times\) 48π cm

= 6π cm

≈ 18.85 cm (rounded to the nearest hundredth)

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Steps which are required to solve quadratic equation by factoring are as follow :

1. Convert the equation into standard form.

2. calculate the factors of the equation by splitting or formula method.

3. Equate the factors to zero and get the value.

Example : Factors of x² + 4x + 4 = 0 are x = -2.

As given in the question,

Steps required to solve quadratic equation by factoring are given by :

Standard quadratic equation is : ax + by + c = 0

Two methods to solve quadratic equations are:

a. Splitting method

b. Formula  : x = ( - b ± √b² -4ac ) / 2a.

Consider a example:

x² + 4x = -4

1. Convert into standard from

x² + 4x + 4 = 0

solve it by splitting method :

x² + 2x + 2x + 4 = 0

⇒ x(x + 2 ) + 2 ( x + 2 ) =0

⇒ ( x + 2 ) ( x+ 2 ) = 0

⇒ x + 2 = 0

⇒ x = -2

Therefore, the steps required to solve quadratic equation are :

1. Convert the equation into standard form.

2. calculate the factors of the equation by splitting or formula method.

3. Equate the factors to zero and get the value.

Example : Factors of x² + 4x + 4 = 0 are x = -2.

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The equations that are true for x = -2 and x = 2 are x² – 4 = 0 and 4x² = 16. So, correct options are A and D.

The solutions for the equations when x = -2 and x = 2 can be found by substituting these values of x into the equations and simplifying.

For x² – 4 = 0, substituting -2 and 2 for x gives (-2)² – 4 = 0 and (2)² – 4 = 0, which are both true. Therefore, this equation is true for x = -2 and x = 2.

For x² = –4, substituting -2 and 2 for x gives (-2)² = –4 and (2)² = –4, which are both false. Therefore, this equation is not true for x = -2 and x = 2.

For 3x² + 12 = 0, substituting -2 and 2 for x gives 3(-2)² + 12 = 0 and 3(2)² + 12 = 0, which are both false. Therefore, this equation is not true for x = -2 and x = 2.

For 4x² = 16, substituting -2 and 2 for x gives 4(-2)² = 16 and 4(2)² = 16, which are both true. Therefore, this equation is true for x = -2 and x = 2.

For 2(x – 2)² = 0, substituting -2 and 2 for x gives 2(-2 – 2)² = 0 and 2(2 – 2)² = 0, which are both true. Therefore, this equation is true for x = -2 and x = 2.

Therefore, correct options are A and D.

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Answer:

240 cubic cm

Step-by-step explanation:

Volume of a cone = 1/3(nr^2h)

volume of a cylinder = nr^2h

n = 22/7

r = radius

The volume of a cone is 1/3 that of a cylinder

to determine the volume of the cylinder with the same parameters as a cylinder, multiply the volume of the cone by 3

80 x 3 = 240 cubic cm

Answer:

Part A:

\(x+y=27 \\4x+y = 45\)

Part B:

Number of vanilla wafers packets bought = 6  and

Number of chocolate wafers packets bought = 21

Step-by-step explanation:

Given:

Cost of each packet of vanilla wafer = $4

Cost of each packet of chocolate wafer = $1

Total number of packets bought = 27

Total money spent = $45

Part A:

To write a system of equations for the given situation.

Here, we do not know the number of packets bought for each type of wafer.

We just know that total number of packets bought and the total money spent in buying those packets.

Let us suppose,

Number of packets of vanilla wafers bought = \(x\) and

Number of packets of chocolate wafers bought = \(y\)

Total number of packets = Number of packets of vanilla wafers bought Plus Number of packets of chocolate wafers bought:

i.e. \(x+y=27 ...... (1)\)

Money spent on vanilla wafers packets = \(4 \times x\)

Money spent on chocolate wafers packets = \(1 \times y\)

Total money spent = \(4x+y = 45 ...... (2)\)

So, the system of equations is:

\(x+y=27 \\4x+y = 45\)

Part B:

To find number of packets bought for each flavor = ?

Here, we have two equations and two variables \(x\) and \(y\).

As, the coefficients of \(y\) in both the equations are same.

Let us subtract equation (1) from (2):

\(4x+y-x-y=45-27\\\Rightarrow 3x = 18\\\Rightarrow \bold{x =6}\)

By equation (1), putting the value of \(x\) and solving for \(y\):

\(6+y=27\\\Rightarrow \bold{y =21}\)

So, number of vanilla wafers packets bought = 6  and

number of chocolate wafers packets bought = 21

Answer:

2*f

Step-by-step explanation:

because all the rest are negative

Answer:

Slope = 6, y-intercept = -12.

Step-by-step explanation:

Slope is the coefficient of the x-term, which is 6 in this case.

The y intercept is the constant term that comes after the x-term, which is -12.

Answer: 15 years

Step-by-step explanation:

$140 doubled is $280 which happens every 15 years

Answer:

0.0016

Step-by-step explanation:

The expression 0.2 by the power of 4  when evaluated has a value of 0.0016

From the question, we have the following parameters that can be used in our computation:

0.2 by the power of 4

Express as an equation

So, we have

0.2 by the power of 4 = 0.2⁴

When expanded, we have

0.2 by the power of 4 = 0.2 * 0.2 * 0.2 * 0.2

Evaluate the products

This gives

0.2 by the power of 4 = 0.0016

Hence, the solution is 0.0016

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Answer:

Attachment: 1 Image

Step-by-step explanation:

The 2 equations are classified as Identities because both sides remain the same for all values of z.

1) We are given the equation;

23z + 19 = 3(5z - 9) + 8z + 46

Let us try z = 0

23(0) + 19 = 3(5(0) - 9) + 8(0) + 46

19 = -27 + 46

19 = 19

Let us try z = 5;

23(5) + 19 = 3(5(5) - 9) + 8(5) + 46

134 = 48 + 40 + 46

134 = 134

Thus, this is an identity as both sides remaining the same for all values of z.

2) We are given the equation;

15y + 32 = 2(10y - 7) - 5y + 46

At y = 0, we have;

15(0) + 32 = 2(10(0) - 7) - 5(0) + 46

32 = -14 + 46

32 = 32

Let us try y = 2;

15(2) + 32 = 2(10(2) - 7) - 5(2) + 46

62 = 26 - 10 + 46

62 = 62

This is an identity as both sides remaining the same for all values of z.

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Answer:

1.6 - 1.4 = 0.2

0.2 / 1.4 = 0.14 = 14%

Step-by-step explanation:

The properties of parallelogram of a quadrilateral:

When adjacent angles are congruent with each other and opposite sides are the same length, extra diagonals cut across them.

A quadrilateral becomes a parallelogram if one set of its opposite sides is congruent and parallel. If — BC — AD and — BC ≅ — AD , then ABCD is a parallelogram. A quadrilateral becomes a parallelogram if its diagonals cut each other in half.

A parallelogram's diagonals connect at their midpoint, which is the intersection of both diagonals.

The identity of the parallelogram of a quadrilateral can be determined in five distinct ways:

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An element in a8, e^(iπ/4), that has order 15. Therefore, we have shown that a8 contains an element of order 15.

To show that a8 contains an element of order 15, we need to find an element in a8 whose order is 15.

First, note that the order of an element a in a group G is the smallest positive integer k such that a^k = e, where e is the identity element of G.

Now, consider the group a8, which is the group of all eighth roots of unity in the complex plane. The eighth roots of unity are given by:

1, e^(iπ/4), e^(iπ/2), e^(3iπ/4), e^πi, e^(5iπ/4), e^(3iπ/2), e^(7iπ/4)

To find an element of order 15, we need to find an eighth root of unity raised to a power that gives us a multiple of 15. We can see that e^(iπ/4) raised to the power of 15 gives us:

(e^(iπ/4))^15 = e^(15iπ/4) = e^(7iπ/2) = e^(3iπ/2) = -i

So, we have found an element in a8, e^(iπ/4), that has order 15. Therefore, we have shown that a8 contains an element of order 15.

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The possible triples are: (3, 3, 3), (4, 2, 4) as seen by counting theorem.

Now, by the counting principle,

Hence, the possible triples are: (3, 3, 3), (4, 2, 4).

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The evidence does not strongly support the claim that women with above-average looks earn significantly more than women with average looks.

To understand the findings, we need to discuss a few key concepts. First, let's clarify the null hypothesis (H0) and the alternative hypothesis (H1). In this case, the null hypothesis states that there is no relationship between physical appearance and income (β2 = 0), while the alternative hypothesis suggests that there is a relationship (β2 ≠ 0).

In this scenario, the one-sided p-value of 0.272 means that there is a 27.2% chance of observing a relationship between physical appearance and income as strong or stronger than what was found in the study, purely by chance, if there is actually no relationship (β2 = 0). Since this p-value is relatively high (greater than the commonly used threshold of 0.05), it implies weak evidence against the null hypothesis.

Therefore, based on the given information, the evidence does not provide sufficient statistical support to reject the null hypothesis that there is no relationship between physical appearance and income (H0: β2 = 0).

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Answer:

5

Step-by-step explanation:

8*5=40 so you multiply the ingredients by 5

Answer:

Step-by-step explanation:

Using the Combination formula,

Total number of ways there to paint 10 hotel rooms in a hotel with five colours is 527 ways .

We have given that,

total number of rooms available for paint = 10

number of colour avaliabile for painting = 5

Atmost three rooms can be painted green i.e

the number of ways for atmost three rooms are painted green = ¹⁰C₃ + ¹⁰C₂ + ¹⁰C₁ = 120 + 45 + 10 = 175

similarly, the number of ways for atmost three rooms are painted red = 175

the number of ways for atmost three rooms are painted blue = 175

Now, one room is remained for painting and two colours are available for it

the number of painting the remained room with aany of two available colours i.e black and white

= 2 ways

thus , total ways to paint the 10 hotel rooms with five different paints are (175×3 +2) = 527

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Answer:

4500 + 150.25s = 3696 + 200.5s Solve for s 4500 - 3696 = 200.5s - 150.25s 804 = 50.25s s = 804/50.25 = 16 tons of sugar The cost is found by plugging this value into either side of the original equation; it is $6904.

Step-by-step explanation:

Answer:

a) They would cost the same with 16 tons of sugar.

b) This would cost 9 108 dollar.

Step-by-step explanation:

! This is only true if the amount of rented trucks remains the same no matter what amount of sugar ! ( Which is really weird but ok.)

a) x= tons of sugar

=>7500+100,50X=6296+175,75X

<=> 75,25x=1204

<=> x=16

b) 7500+100,50.16=9108

Answer:

a = 5

b = -4

c = -20

Step-by-step explanation:

Here, we want to express the given equation in the following form;

So we can have this as;

5x-4y-20 = 0

That means we have;

a as 5

b as -4

and c as -20

The availability of the web hosting service over the past 100 days is 99.5%.

The term availability means the degree to which a system like web hosting is in specified operable and committable state at the start of a mission.

We will find the downtime first.

Given that:

Hosting provider has been up 99% of the time, the downtime is:

= 100 days x (1 - 0.99)

= 1 day

The total time that the service should have been available is:

= 100 days x 24 hours/day

= 2400 hours

The availability as the ratio of uptime to total time is

= (2400 - 12) / 2400 x 100%

= 0.995 x 100%

= 99.5%.

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Answer:

Step-by-step explanation:

Given angle 1 = 140°, you want the measures of the other numbered angles where a transversal crosses parallel lines.

Where a transversal crosses parallel lines, corresponding angles are congruent.

Wherever lines cross. vertical angles are congruent, and linear pairs are supplementary.

These reasons together tell you all the obtuse angles are congruent, and all the acute angles are congruent. The obtuse and acute angles are supplementary.

  ∠1 = ∠4 = ∠5 = ∠8 = 140° . . . . . . given

  ∠2 = ∠3 = ∠6 = ∠7 = 40° . . . . . . done for you

__

Additional comment

The angles are also named according to where pairs of angles are found.

Various theorems describe the congruent/supplementary status of pairs of angles using these names:

In general, the converses of these theorems are also true. If corresponding angles are congruent, then the lines are parallel.