I’m having trouble with this practice problem in pre calculus.

Answer:

def of right angles

HL

Step-by-step explanation:

i might be wrong sorry its been a few years

Check the picture below.

The number of friendship bracelets Gabrielle can make is 20 bracelet

1 feet = 12 inches

12 feet = 144 inches

Number of colors of floss = 6

Quantity of each floss = 12 feet = 144 inches

Total quantity of floss = 6 × 144

= 864 inches

Quantity of each floss used for bracelet = 7 1/5 inches

Total floss used for each bracelet = 6 × 7 1/5

= 6 × 7.2

= 43.2 inches

Number of bracelet Gabrielle can make = Total quantity of floss ÷ Total floss used for each bracelet

= 864 ÷ 43.2

= 20 bracelet

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The domain of the function represented in the graph will be 20 ≤ x ≤ 60, or x is from 20 to 60. Then the correct option is D.

A line segment in mathematics has two different points on it that define its boundaries.

A line segment is sometimes referred to as a section of a path that joins two places.

Six-year-old students at an elementary school were given a 20-yard head start in a race. The graph shows how far the average student ran in 30 seconds.

A line graph with Distance, in yards, on the x-axis and Age of the Runner on the y-axis. The x-axis has a scale from 0 to 80 in increments of 10. The y-axis has a scale of 0 to 8 in increments of 2. A straight line connecting 20, 6, and 60, 6 is drawn.

The domain of the function represented in the graph will be 20 ≤ x ≤ 60, or x is from 20 to 60. Then the correct option is D.

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Answer:

the correct option is D

Step-by-step explanation:

Answer:

7 or 6^7

Step-by-step explanation:

Answer:

e-5=2f

take '-5' to the other side where '2f' is

e=2f+5

An equation is formed of two equal expressions. The given equation can be completed as -20-(-12)=-20+12.

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

For the given equation, if the left side of the equation is simplified, then we can get the right side of the equation, therefore, the equation will be,

-20 - (-12)

= -20 -1(-12)  

= -20 + (-1 × -12)

= -20 + 12

Hence, the given equation can be completed as -20-(-12)=-20+12.

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Answer:

83.400

Step-by-step explanation:

thing is called math soup on the internet

1. The percentage of maize flour is given as 16.7 %

2. The common ratio of the GP is r = 1.5.

1. We have to set up equation

60x + 90(1 - x) = 85

60x + 90 - 90x = 85

now we have to solve for the value of x

-30x = -5

x = 5 / 30

x = 0.167

Hence percentage of maize flour is given as 16.7 %

2. a + ar = 20 (1)

ar + ar^2 = 30 (2)

We can rearrange equation (1) to get an expression for a:

a = 20 / (1 + r)

Now, we can substitute a into equation (2) to get an equation only in terms of r:

\(20r / (1 + r) + 20r^2 / (1 + r) = 30\\20r + 20r^2 = 30(1 + r)\\20r + 20r^2 = 30 + 30r\\20r^2 - 10r - 30 = 0\\2r^2 - r - 3 = 0\)

Solving this quadratic equation, we get:

We have two solutions, r = 1.5 and r = -1. But since the GP is increasing, we discard the negative solution. Therefore, the common ratio of the GP is r = 1.5.

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Answer:

(2x^2+1)(4x+3)

Step-by-step explanation:

8x^3 + 6x^2 + 4x+3

Split into two groups

8x^3 + 6x^2       + 4x+3

Factor out 2x^2 from the first group and 1 from the second group

2x^2( 4x+3)  +1( 4x+3)

Factor out (4x+3) from each group

(4x+3) (2x^2+1)

Rearranging the order

(2x^2+1)(4x+3)

Answer:

(2x²+1)(4x+3)

Step-by-step explanation:

Correct choice is the second one

       A) -  Event  "A  or  B"  Consists  of  the Outcomes:

               {2, 3, 4, 5, 6, 8}

      B) - Event  "A  or  "B"  Consists  of the Outcomes:

             {4,  6}

      C) -  The "COMPLEMENT  of EVENT  "A"  Consists of the Outcomes:

             {1, 3, 5, 7}

MAKE A PLAN:

List The OUTCOMES for EACH EVENT and their COMBINATIONS:

        a) -  EVENT  "A":  {2, 4, 6, 8}

               EVENT "B":   {3, 4, 5, 6}

               EVENT "A" or "B": {2, 3, 4, 5, 6, 8}

        b) - EVENT "A"  or "B":  {4, 6}

        c) -  The COMPLEMENT of the EVENT "A":  {1, 3, 5, 7}

       A) -  Event  "A  or  B"  Consists  of  the Outcomes:

               {2, 3, 4, 5, 6, 8}

      B) - Event  "A  or  "B"  Consists  of the Outcomes:

            {4,  6}

      C) - The "COMPLEMENT  of EVENT  "A"  Consists of the Outcomes:

             {1, 3, 5, 7}

I hope this helps!

The truck driver would deliver 105 packages in a 7 hours day

An equation is an expression that shows how numbers and variables are related to each other using mathematical operators.

Let y represent the number of packages delivered by the truck driver in x hours. Using the point (1, 15) and (4, 60). Hence, the equation is:

y - 15 = [(60-15)/(4-1)](x - 1)

y = 15x

For a 7 hour day (x = 7):

y = 15(7) = 105

The driver would deliver 105 packages in 7 hours

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Answer:

The two odd numbers are 15 and 17

Step-by-step explanation:

Given

Let the odd numbers be represented with x and y

Let x be the greater number

\(x + 5y = 92\)

Required

Find x and y

Since x and y are consecutive odd numbers and x is greater, then

\(x = y + 2\)

Substitute y + 2 for x in \(x + 5y = 92\)

\(y + 2 + 5y = 92\)

Collect Like Terms

\(y + 5y = 92 - 2\)

\(6y = 90\)

Divide both sides by 6

\(\frac{6y}{6} = \frac{90}{6}\)

\(y = \frac{90}{6}\)

\(y = 15\)

Substitute 15 for y in \(x = y + 2\)

\(x = 15 + 2\)

\(x = 17\)

Hence; the two odd numbers are 15 and 17

Answer:

Maths

Step-by-step explanation:

Answer:

The two odd numbers are 15 and 17

Step-by-step explanation:

Given

Let the odd numbers be represented with x and y

Let x be the greater number

Required

Find x and y

Since x and y are consecutive odd numbers and x is greater, then

Substitute y + 2 for x in  

Collect Like Terms

Divide both sides by 6

Substitute 15 for y in  

Hence; the two odd numbers are 15 and 17

Answer:

false

Step-by-step explanation:

Answer:

1,009,479

Step-by-step explanation:

dude there 8a some thing called as a CALCULATOR

Answer:

Step-by-step explanation:

Using table calculating the mean for each case

1. Entire year, sample size 12

2. First six months, sample size 6

3. April through November, sample size 8

Write z = -8 in polar form:

\(z = -8 = 8e^{i\pi}\)

Then the cube roots of z are

\(z^{1/3} = 8^{1/3} e^{i\left(\frac{\pi+2n\pi}3\right)\)

where n ∈ {0, 1, 2}, or

\(z^{1/3} \in \left\{8^{1/3} e^{i\pi/3}, 8^{1/3} e^{i\pi}, 8^{1/3} e^{i\,5\pi/3}\right\} \\\\ z^{1/3} \in \left\{2 \left(\dfrac12 + i\dfrac{\sqrt3}2\right), -2, 2 \left(\dfrac12-i\dfrac{\sqrt3}2\right)\right\} \\\\ \boxed{z^{1/3} \in \left\{1+i\sqrt3, -2, 1-i\sqrt3\right\}}\)

The number 9 does not belong to the set g, so it does not get circled. The number 9 belongs to the set A, so it should be circled.

The number 9 does not belong to the set g, so it does not get circled. The number 9 belongs to the set A, so it should be circled.

g = {2, 4, 6, 8}

9

A: A

The number 9 does not belong to the set g, so it does not get circled. The number 9 belongs to the set A, so it should be circled.

The number 9 does not belong to the set g, which consists of the numbers 2, 4, 6, and 8. Instead, the number 9 belongs to the set A, so the symbol should be circled to indicate this. The set A includes all the numbers from 1 to 10, so the number 9 is included. This means that the circle should be placed around the symbol for set A to indicate that 9 belongs to this set.

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Answer:

x is 28

Step-by-step explanation:

When two lines intersected in a point, then they formed two pairs of vertically opposite angles. The vertically opposite angles are equal in measures

Let us solve our question

∵ AB and CD are straight lines intersected at O

∴ ∠AOC and ∠DOB are vertically opposite angles

∴ ∠AOD and ∠COB are vertically opposite angles

→ The vertically opposite angles are equal in measures

∴ m∠AOC = m∠DOB

∴ m∠COB = m∠AOD

→ ∠ COB is formed from ∠COE, ∠EOF, and ∠FOB

∵ m∠COB = m∠COE + m∠EOF + m∠FOB

∵ m∠COE = 3x, m∠EOF = x, m∠FOB = x + 12

∴ m∠COB = 3x + x + x + 12

→ Add the like terms

∴ m∠COB = 5x + 12

∵ m∠AOD = 152°

∵  m∠COB = m∠AOD

∴ 5x + 12 = 152

→ Subtract 12 from both sides

∴ 5x + 12 - 12 = 152 - 12

∴ 5x = 140

→ Divide both sides by 5

∴ \(\frac{5x}{5}=\frac{140}{5}\)

∴ x = 28

→ To justify the solution substitute x by 28 in m∠COB the answer must

   be 152°

∵ m∠COB = 5x + 12

∵ x = 28

∴ m∠COB = 5(28) + 12

∴ m∠COB = 140 + 12

∴ m∠COB = 152°

∴ The value of x is correct

Answer:

B

Step-by-step explanation:

Answer:

\(\frac{1}{6}\)

Step-by-step explanation:

1) \(\frac{1}{8}\)÷\(\frac{3}{4}\)

2) Switch the numbers in the second fraction so that it looks like this:

         \(\frac{1}{8}\)÷\(\frac{4}{3}\)

3) Now reduce by 2 and solve.

 \(\frac{1}{8}\)·\(\frac{4}{3}\) =

 \(\frac{1}{2}\)·\(\frac{1}{3}\) = \(\frac{1}{6}\)

i hope this helps.. :)

By analyzing the given graph, we can see that:

a) The amplitude is K = 2.

b) The period is T = 180°

c) The sinusoidal function is:

f(x) = 2*sin(2x - 90°)  - 3

First, we want to find the amplitude of the sinusoidal function.

To get the amplitude, we need to get the difference between the maximum y-value and the minimum y-value and divide that by 2.

Then the amplitude is:

K = (-1 - (-5))/2 = 2

To find the period, we just need to find the horizontal distance between any two consecutive equivalent points on the graph (for example, between two consecutive peaks).

It seems that the first peak is at 90° and the second at 270°, then the period is:

T = 270° - 90° = 180°.

Because the period is 180° (The period of the parent sine function is 360°, then we have a factor of 2 multiplying the argument of our sine function.) we conclude that the sine function will be something like:

f(x) = K*sin(2*x + p) + M

Where K is the amplitude, which we know is equal to 2, and M is the midline of the sine, (it is the horizontal line that cuts the graph in two halves) which is at y = -3, then we conclude that the equation is:

f(x) = 2*sin(2*x + p) - 3

p is the phase shift of the sine function. On the graph, we can see that when x = 0, we have:

f(x) = -5, then:

sin(2*0 + p) = -1

sin(p) = -1

Then we have p = -90°

We conclude that the sine equation is:

f(x) = 2*sin(2x - 90°) - 3

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Answer:

1). y= -4+ 4x

2). y= 3+ x/2

Step-by-step explanation:

hope this helps !

Answer:

x+100

Step-by-step explanation:

x^2-10,000/x-100

x^2-10000 is a difference in squares and can be factored.

x^2-10000 = (x+100)(×-100).

(x+100)(x-100)/(x-100)

(x-100) cancel each other.

x+100 remains.

The slope of a segment can be calculated by dividing the rise (change in the vertical direction) and the run (change in the horizontal direction).

Looking at the segment YZ, the horizontal distance is 3 units and the vertical distance is 6 units.

Therefore the slope is:

The slope of YZ is equal to 2.