Triangle J K L is shown. Point N is the midpoint of side J L and point M is the midpoint of side K L. The length of J K is 19.6 meters. The lengths of J N and N L are 7.4 meters. The lengths of K M and M L are 10.7 meters.

What is the distance between points M and N?

meters

A triangle is a three-edged polygon with three vertices. The length of the side MN is 3 cms.

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.

The triangle formed by MN, MO, NO is an equilateral triangle, with the length of each side of the triangle equal to the radius of the triangle. Therefore, the length of MN will be,

MN = r

Now, the length of arc MN can be written as,

2 × π × r × (60° /360°) = π

r = 360 / (60 × 2)

r = 3

Hence, the length of the side MN is 3 cms.

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The inverse function of f(x) is [tex]f^{-1}(x) = \sqrt{x - 6}[/tex] and the domain is x > 6

The function is given as:

f(x) = x^2 + 6

Rewrite as:

y = x^2 + 6

Swap x and y

x = y^2 + 6

Subtract 6 from both sides

y^2 = x - 6

Take the square root

[tex]y = \sqrt{x - 6}[/tex]

Rewrite as:

[tex]f^{-1}(x) = \sqrt{x - 6}[/tex]

Hence, the inverse function of f(x) is [tex]f^{-1}(x) = \sqrt{x - 6}[/tex] and the domain is x > 6

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Answer:

Step-by-step explanation:

Comment and answer

ABC is similar to XBY           The triangles are similar because

BX = 2                                             Given

XA = 3                                             Given

BY = 3                                              Given

YC = x                                              Object of question

BX/(BX + XA) = BY / (BY + YC)       Parts of two similar triangles

2/(2 + 3) = 3/(3+ x)                           Combine the left

2/5 = 3/(3 + x)                                  Cross Multiply

2*(3 + x) = 3*5                                  Remove the brackets

6 + 2x = 15                                       Subtract 6 from both sides

6-6+2x = 15 - 6                                Combine

2x = 9                                               Divide by 2

2x/2 = 9/2

x = 4.5

Answer

x = 4.5 or D

Answer:

x = 1

Explanation:

[tex]\sf \rightarrow log(3x) + log(x + 4) = log(15)[/tex]

Rule: log(a) + log(b) = log(ab)

[tex]\sf \rightarrow log(3x(x + 4)) = log(15)[/tex]

cancel out log on both sides

[tex]\sf \rightarrow 3x(x + 4) = 15[/tex]

relocate constant variable

[tex]\sf \rightarrow 3x^2 + 12x -15 = 0[/tex]

take 3 as a common factor

[tex]\sf \rightarrow 3(x^2 + 4x -5) = 0[/tex]

divide both sides by 3

[tex]\sf \rightarrow x^2 + 4x -5 = 0[/tex]

middle term split

[tex]\sf \rightarrow x^2 + 5x -x-5 = 0[/tex]

factor common terms

[tex]\sf \rightarrow x(x + 5) -1(x+5)= 0[/tex]

collect into groups

[tex]\sf \rightarrow (x-1)(x+5)= 0[/tex]

set to zero

[tex]\sf \rightarrow x-1 = 0 , \ x+5= 0[/tex]

relocate variables

[tex]\sf \rightarrow x = 1, \ x = -5[/tex]

There must be a positive solution for log, so the solution is only x = 1

Answer:

[tex]x=1[/tex]

Step-by-step explanation:

Given:

[tex]\log (3x)+\log(x+4)=\log (15)[/tex]

As the logs have no base, assume that the base is 10.

[tex]\textsf{Apply log Product law}: \quad \log_ax + \log_ay=\log_axy[/tex]

[tex]\implies \log_{10} (3x)+\log_{10}(x+4)=\log_{10} (15)[/tex]

[tex]\implies \log_{10} \left(3x(x+4)\right)=\log_{10} (15)[/tex]

Expand the brackets:

[tex]\implies \log_{10} \left(3x^2+12x\right)=\log_{10} (15)[/tex]

[tex]\textsf{Apply the log Equality law}: \quad \textsf{if }\: \log_ax=\log_ay\:\textsf{ then }\:x=y[/tex]

[tex]\implies 3x^2+12x=15[/tex]

Subtract 15 from both sides:

[tex]\implies 3x^2+12x-15=0[/tex]

Factor out the common term 3:

[tex]\implies 3(x^2+4x-5)=0[/tex]

Divide both sides by 3:

[tex]\implies x^2+4x-5=0[/tex]

Split the middle term:

[tex]\implies x^2+5x-x-5=0[/tex]

Factorize the first two terms and the last two terms separately:

[tex]\implies x(x+5)-1(x+5)=0[/tex]

Factor out the common term (x + 5):

[tex]\implies (x-1)(x+5)=0[/tex]

Therefore:

[tex]x-1=0 \implies x=1[/tex]

[tex]x+5=0 \implies x=-5[/tex]

As logs cannot be taken of negative numbers, [tex]x=-5[/tex] is an extraneous solution.  Therefore, the only valid solution is:  [tex]x=1[/tex]

Answer:

-ab^2

Step-by-step explanation:

7b^2a - 5b^2a - 3ab^2

= 2b^2a - 3ab^2

= (2 × b^2 × a) - (3 × a × b^2)

= -ab^2

b^2a and ab^2 is the same thing. hope it helps!

By apply the distributive property of multiplication, the value of k which makes the statement true is 1.

Mathematically, the distributive property of multiplication is given by tis expression:

x(y + z) = xy + xz.

Next, we would apply the distributive property of multiplication to the given equation by distributing to the left-hand side using xy⁴:

k(2x⁴y⁴ + 7x³y⁸) = 2x⁴y⁴ + 7x³y⁸

Dividing both sides by the common factor, we have:

k = (2x⁴y⁴ + 7x³y⁸)/(2x⁴y⁴ + 7x³y⁸)

k = 1.

In conclusion, the value of k which makes the statement true is 1.

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Complete Question:

What value of k makes the statement true?

[tex]x^k[/tex]y⁴(2x³ + 7x²y⁴) = 2x⁴y⁴ + 7x³y⁸

Answer: The values are a = 4, b = 2, c = 16, d = 9

simplified further

c = 16

d = 9

Answer:

-0.7

Step-by-step explanation:

Given x - y = 0.7

We will assign x and y random values that has a difference of 0.7

x = 1.3

y = 0.6

Using these 2 values,

y-x = 0.6-1.3

= -0.7

As you can see here , you will get a reversed value when you reverse the expression.

Jane goes to the beach if and only if it is a sunny day.

========================================================

Reason:

A regular conditional statement is in the form "If P, then Q" where P and Q are placeholders for other statements.

For example, we can replace "P" with "it rains" and replace "Q" with "the grass gets wet". This means "If P, then Q" becomes "If it rains, then the grass gets wet".

It's hopefully clear that the example above is a one way street. It points in only one direction. The act of raining leads directly to the grass being wet. However, we cannot go in reverse. If we see the grass is wet, it doesn't mean it rained. Perhaps someone turned on a hose or sprinkler system. P leads to Q, but Q does not lead to P.

In short, all of what is mentioned so far is considered a regular conditional statement. So far we haven't addressed bi-conditional statements.

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

Bi-conditional statements are conditionals that work in reverse.

An example would be "If a figure is a square, then it has 4 congruent sides and 4 right angles". That conditional statement works in reverse. Therefore "If a figure has 4 congruent sides and 4 right angles, then the figure is a square" is also true simply by what it means to be a square.

So the format "If P, then Q" can be reversed to "If Q, then P" to have an equivalently true statement. The common practice is to use "if and only if" to help shorten things.

We would have the template "P if and only if  Q" which is the same as "Q if and only if P". The order doesn't matter since we can reverse things just fine.

Often you'll find bi-conditional statements when it comes to definitions. The term "weekend" literally means the day is either Saturday or Sunday, which is why choice C is another bi-conditional. A very similar situation applies to choice D as well.

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

We've found that choices A, C and D are bi-conditional statements. They can be ruled out. We're left with choice B.

This is not a bi-conditional. Why not? It's assumed that Jane would go to the beach on a sunny day, but perhaps she enjoys the beach just fine on cloudy days. There's also the fact she could be doing other things on sunny days. The presence of the sun doesn't automatically mean the beach. If you said "It gets warm if and only if it's a sunny day", then I think this is more in line with a bi-conditional.

This is why choice B is the final answer.

[tex]y=2(x+1)^2+6[/tex]

The vertex (−1,6)

Equation of axis of symmetry is x = -1

minimum at (-1,6)

[tex]y=\frac{-(x-1)}{2} ^2-4[/tex]

The vertex (1,-4)

Equation of axis of symmetry is x = 1

maximum at (1,-4)

A graph can be defined as a pictorial representation or a diagram that represents data or values.

[tex]y=2(x+1)^2+6[/tex]

The vertex (−1,6)

Equation of axis of symmetry is x = -1

minimum at (-1,6)

[tex]y=\frac{-(x-1)}{2} ^2-4[/tex]

The vertex (1,-4)

Equation of axis of symmetry is x = 1

maximum at (1,-4)

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Answer:

a.) The pizzas will cost the same at 4 toppings

Step-by-step explanation:

Medium Pizza:

$5.99 + $0.75x

Large Pizza:

$6.99 + $0.50x

Find x

$5.99 + $0.75x =  $6.99 + $0.50x

0.25x = 1

x = 4

Answer:

B. Linear increasing

Step-by-step explanation:

decay means decreasing

exponential graph would have a curve

Answer:

1)The equation is 3^N, where N starts at 4 and goes down 1 each time

2) 1 would be the 5th term

Step-by-step explanation:

3^4=81

3^3=27

3^2=9

3^1=3

3^0=1

The rates of each cyclist are 17mi/h and 20mi/h

What is rate?

Rate is a ratio that compares two different quantities which have different units.

In this comparison, one unit is taken to be a standard unit in which the other is compared with.

Analysis:

Let the speeds of both cyclists be x,  x+3

distance travelled by x cyclist = 2x

distance travelled by (x+3) cyclist = 2(x+3)

Total distance = 2x + 2(x+3) = 74 miles

2x +2x +6 = 74

4x + 6 = 74

4x = 74 - 6

4x = 68

x = 68/4 = 17mi/h

The other cyclist speed is x +3 = 17 +3 = 20mi/h

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Answer:

3x² + 6x + 4

Step-by-step explanation:

6x + 7 + x² + 2x² - 3

→ Collect like terms

x² + 2x² + 6x + 7 - 3

→ Simplify

3x² + 6x + 4

Answer:

3x^2+6x+4

Step-by-step explanation:

We can find the sum of the polynomials by combining like terms.

(6x+7+x²)+(2x²-3)

x^2+2x^2+6x+7-3

3x^2+6x+4

By applying the triangle midpoint theorem to the two triangles (see attachment), the correct statements are:

A. One-halfQP = UT

D. SU ∥ RP

Triangle midpoint theorem states that the line segment which connects the midpoints of two (2) sides of a triangle must be parallel to the third side, and it's congruent to one-half of the third side.

By applying the triangle midpoint theorem to the two triangles (see attachment), we can infer and logically deduce that one-half of side QP is equal to side UT and side SU is parallel to side RP (SU ∥ RP).

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Complete Question:

Points S, U, and T are the midpoints of the sides of ΔPQR. ΔSUT is inside of ΔPQR. Points S, U, and T are the midpoints of ΔPQR. Which statements are correct? Check all that apply.

A. One-half QP = UT

B. One-half TS = RQ

C. SU = PR

D. SU ∥ RP

E. UT ⊥ RP

Answer: a and d

Step-by-step explanation:

A total of 800 tickets for the covered pavilion and 700 tickets for lawn seats were sold, solved using a system of equations.

We assume the number of covered pavilion tickets sold to be x and the number of lawn seat tickets sold to be y.

As a total of 1500 tickets were sold, we can form an equation:

x + y = 1500 ... (i),

as we had only those two types of tickets.

The cost of each covered pavilion ticket = $20.

Hence, the total revenue from covered pavilion tickets = $20x.

The cost of each lawn seat ticket = $10.

Hence, the total revenue from lawn seat tickets = $10y.

The total receipts were said to be $23,000.

Thus, we can represent this as an equation:

20x + 10y = 23000 ...(ii).

Combining (i) and (ii), we get a system of equations:

x + y = 1500 ... (i).

20x + 10y = 23000 ... (ii).

Dividing equation (ii) by 10, we get:

2x + y = 2300 ... (iii).

Subtracting (i) from (iii), we get:

2x + y = 2300.

 x + y = 1500.

(-)  (-)     (-)

____________

x = 800.

Substituting x = 800 in (i), we get:

x + y = 1500,

or, 800 + y = 1500,

or, y = 1500 - 800,

or, y = 700.

Thus, a total of 800 tickets for the covered pavilion and 700 tickets for lawn seats were sold, solved using a system of equations.

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The true statement about the function which is represented by this graph is: D. the function has an inverse because it passes the horizontal line test.

The horizontal line test states that if the graph of function (f) is intersected by any horizontal line more than once, then, the function (f) doesn't have an inverse.

Conversely, if the graph of function (f) isn't intersected by any horizontal line more than once, then, the function (f) has an inverse.

By critically observing the graph of the given function (f) shown in the image attached below, we can logically deduce that it has an inverse because it passed the horizontal line test.

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Answer: D. The function has an inverse because it passes the horizontal line test.

Step-by-step explanation:

Got it right on test.

A midpoint of a line segment implies a point on the line that is equidistant to its two ends. So that the required proof is shown below:

Given: line segment MN

           x, the midpoint of MN

           MX = RX

Then;

MX = XN (midpoint property of a line)

So that,

MN = MX + XN

      = MX + MX (since XN = MX)

MN = 2MX

Thus,

MX = XN = RX (given that MX = RX)

Therefore, it can be concluded that;

XN = RX

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Using translation concepts, the equation of the graph is:

y = |0.5x - 2.5| + 3.

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction in it's definition.

The function is:

y = |0.5x - 2| + 3.

When it is shifted one unit to the right, we have that x -> x - 1, hence:

y = |0.5(x - 1) - 2| + 3

y = |0.5x - 2.5| + 3.

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Answer:

Step-by-step explanation:

The required sample size is 694.

Given a student wants to make a guess within 0.03 of the true ratio with a 95% confidence level.

Margin of Error, E = 0.03

significance level α=0.05  {95% confidence}

A given estimate of the percentage of population p is p = 0.79.

The critical value for the significance level α = 0.05 is Zc = 1.96. This can be determined using either Excel or a normal probability table.

Use the following formula to calculate the minimum sample size required to estimate the percentage of population p within the required margin of error.

n≥p(1-p)(Zc÷E)²

n=0.796×(1-0.796)(1.96÷0.03)²

n=693.1016

Therefore, the  resample sizequired to meet the condition is n ≥ 693.1016 and must be an integer. From this, we conclude that the minimum sample size required is n = 694.

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Answer:  x = 7

Step-by-step explanation:

[tex]\frac{x}{8} =\frac{28}{32}[/tex]

We cross multiply, and we get:

32x = 8(28)

32x = 224

    x = 7

The simplified form of the expression ( (2⁻²)(3⁴) )⁻³ × ( (2⁻³)(3²) )²  is  [tex]\frac{1}{3^8}[/tex].

Hence, option B is the correct answer.

Given the expression;

( (2⁻²)(3⁴) )⁻³ × ( (2⁻³)(3²) )²

First, we use the properties of exponents.

( 2⁻²ˣ⁻³ × 3⁴ˣ⁻³ ) × ( 2⁻³ˣ² × 3²ˣ² )

( 2⁶ × 3⁻¹² ) × ( 2⁻⁶ × 3⁴ )

We take out the parentheses, such that;

2⁶ × 2⁻⁶ × 3⁻¹² × 3⁴

Note that: 2⁶ × 2⁻⁶ = 1, as [tex]2^6*2^{-6}=2^{6+(-6)}=2^0=1[/tex]

Hence, we have

1 × 3⁻¹² × 3⁴

3⁻¹²⁺4

3⁻⁸

Next, we express with positive exponent

[tex]\frac{1}{3^8}[/tex]

The simplified form of the expression ( (2⁻²)(3⁴) )⁻³ × ( (2⁻³)(3²) )²  is  [tex]\frac{1}{3^8}[/tex].

Hence, option B is the correct answer.

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Answer: (1, -3)

Step-by-step explanation:

[tex]8x+4y=-4\\-4x-5y=11[/tex]

[tex]2(-4x-5y)=11(2)\\-8x-10y=22[/tex]

new system:

[tex]8x+4y=-4\\-8x-10y=22[/tex]

add.

[tex]-6y=18\\y=-3[/tex]

plug in -3 for y

[tex]8x+4(-3)=-4\\8x-12=-4\\8x=8\\x=1[/tex]

system:

[tex](1,-3)[/tex]

Answer:

Answer:

LCM(24,30,40)=120.The Least common multiple for three numbers 24,30 and 40 is 120

Step-by-step explanation:

Answer:

Last option, y = -4/3x - 2/3

Step-by-step explanation:

The equation of the line is written in the slope-intercept form,

y = mx + b

where m represents the slope

number that describes both the direction and the steepness of the line

slope = rise/run

           b represents the y-intercept  

point where crosses the y-axis

Given:

Let change 3x - 4y = 2 into y = mx + b form,

3x - 4y = 2

subtract 3x from both sides,

3x - 3x - 4y = 2 - 3x

- 4y = 2 - 3x

divided both sides by -4 to get y alone,

- 4y / -4 = 2 - 3x / - 4

  y = (3x / 4) - (2 / 4)

→ y = (3/4)x - (1/2)

Slope of perpendicular lines to another is the negative reciprocal

(ex. slope of 2 becomes -1/2)

So for y = (3/4)x - (1/2) the slope will be,

slope = -4/3

We need to find b (y-intercept),

we know it passes through point (1, - 2)

a point is (x, y) format

y = -(4/3)x + b

plug in the point (1, - 2),

-2 = -4/3(1) + b

-2 = -4/3 + b

add 4/3 to both sides to get b alone,

-2 + 4/3 = -4/3 + 4/3 + b

-2/3 = b

the perpendicular line equation is,

y = -4/3x - 2/3

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Answer: a. -52 1/2

Step-by-step explanation:

    Given:

3/4(2/3 + 4/3) - 9 / 1/2 x 1/3

[tex]\displaystyle \frac{3}{4}(\frac{2}{3} +\frac{4}{3} )-\frac{9}{\frac{1}{2} *\frac{1}{3} }[/tex]

    Add and multiply:

[tex]\displaystyle \frac{3}{4}(\frac{6}{3} )-\frac{9}{\frac{1}{6} }[/tex]

    Simplify and divide:

[tex]\displaystyle \frac{3}{4}(2 )-54[/tex]

    Multiply:

[tex]\displaystyle 1.5-54[/tex]

    Subtract:

         a. -52 1/2

Answer:  The base should be 4.

Step-by-step explanation:

1. We draw a triangle shape like the image.

(The steps was showed in the image).