Help me please just do the one about sebastian please!

Answer:

[tex]BC=26[/tex]

Step-by-step explanation:

Start with:

[tex]AB+BC=AC[/tex]

Since [tex]B[/tex] is the midpoint, we also know that:

[tex]AB=BC[/tex]

Knowing this, we can use a system of equations and substitute [tex]AB[/tex] for [tex]BC[/tex] in the equation we started with:

[tex]AB+AB=AC[/tex]

Let's identify our values:

[tex]AB=3x-1\\AC=8x-20[/tex]

Substitute:

[tex]3x-1+3x-1=8x-20[/tex]

Combine like terms:

[tex]6x-2=8x-20[/tex]

Add [tex]20[/tex] to both sides of the equation:

[tex]6x+18=8x[/tex]

Subtract [tex]6x[/tex] from both sides of the equation:

[tex]18=2x[/tex]

Divide by the coefficient of [tex]x[/tex], which is [tex]2.[/tex]

[tex]x=9[/tex]

Substitute [tex]9[/tex] into [tex]3x-1[/tex]

[tex]3(9)-1[/tex]

Solve:

[tex]AB=26[/tex]

Remember that [tex]AB=BC[/tex], thus:

[tex]BC=26[/tex]

Answer:

80

Step-by-step explanation:

The formula for solving the area of a trapezoid is [tex]\frac{a+b}{2} h[/tex]

So plug the numbers in and the answer is 80

hope that helps! have a great day! :)

Answer:

Convert to a simplified fraction by placing the numbers to the right of the decimal over  100 .

Reduce the fraction.

27 /50

Step-by-step explanation:

Answer:

27/50

Step-by-step explanation:

Take 54 and divide by 100 (54/100). The GCD of 54 is 2. When we divide the numerator and the denominator by 2 we get 27/50

The correct option is Option C: the missing value is 12.

In directly proportionality, if one quantity increases then the other quantity also increases. if one quantity decreases then other quantity also decreases.

x ∝ y

⇒ x= ky

where k is proportionality constant.

Here the value x1, y1 is given by

x1=8

y1=6

as x1 is directly proportional to y1.

x1 = ky1

⇒8=6k

⇒k= 8/6

⇒k =4/3

If x3= 24 then x3 =ky3

⇒24=(4/3)y3

⇒y3= 24/(4/3)= 18 which is true from the table

Then given in the question x2=16

As x2 is directly proportional to y2.

x2 ∝ y2

⇒ x2 =ky2

where k= 4/3

⇒ 16 = (4/3)y2

⇒ y2= 16/(4/3)

⇒y2= 16*3/4

⇒y2= 12

The correct option is Option C: the missing value is 12.

Learn more about proportionality

here: https://brainly.com/question/24868934

#SPJ2

The total money would Zoey have to pay in a month in which she downloaded 45 songs will be $40.75. And she has to pay if she downloaded s songs that will be y = 0.75s + 7.

A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

Zoey signed up for a streaming music service that costs $7 per month. The service allows Zoey to listen to unlimited music, but if she wants to download songs for offline listening, the service charges $0.75 per song.

Let x be the number of songs and y be the total amount. Then the equation will be

y = 0.75x + 7

The total money would Zoey have to pay in a month in which she downloaded 45 songs will be

y = 0.75 × 45 + 7

y = 33.75 + 7

y = $40.75

She has to pay if she downloaded s songs that will be

y = 0.75s + 7

More about the linear equation link is given below.

https://brainly.com/question/11897796

#SPJ2

Answer:

Options (A) and (D).

Step-by-step explanation:

Given expression is,

4x³ - 7x² - [tex]\frac{30}{y}[/tex] + 15

Characteristics of the give expression ,

Option (A).

Third term [tex]-\frac{30}{y}[/tex] of the expression is in the form a ratio.

True.

Option (B).

Entire expression is a difference.

False.

Option (C).

There are three terms.

False.

Option (D).

There are four terms in the given expression.

True.

Therefore, Options (A) and (D) will be the correct options.

Answer:

11111/100000

Step-by-step explanation:

Good luck

Answer:

area=108

Step-by-step explanation:

length times width

8x6=48

10x4=40

5x4=20

     ---------

   Add them all together   48+40+20 =108

Answer:

by slope what are u meaning by that

Answer:

to find slope it's m= rise/run = y2-y1/ x2-x1

Step-by-step explanation:

m=slope

(x1, x2) = coordinate of the first point in the lines

(y2, y1) = coordinate of the second point in the line.

Answer:

1/2

Step-by-step explanation:

Subtract 2x from both sides

Add 3 to both sides

Then divide both sides by 4

x = (1/2)

It could be anything in reality. Do you need the zero's solved?Please specify the question properly.

ANS: 12,0,13

Answer:5 to the power of -3 is 5 times-5=-25 times -25= 125 times -5 = -625

Step-by-step explanation:

Answer:

volume = 0.30 m³

Step-by-step explanation:

GIVEN:

The area of the star shaped surface of this block is 1.2m^2.

The thickness of the block is 25cm.

FIND:

What is the volume of the block?

SOLUTION:

volume = area x length

where area = 1.2 m²;   length = 0.25 m

plugin values into the formula:

volume = 1.2 m² x 0.25 m

             = 0.30 m³

therefore, the volume of the star shaped block is 0.30 m³

Answer:

n = 6

Step-by-step explanation:

Simplify [tex]\frac{1}{2}[/tex] · [tex](n-4)-7[/tex]

n/2 -2 -7 =-2n +6

n/2 - 9+ -2n +6

Move all terms containing  n  to the left side of the equation.

n/2 - 9 +2n =6

To write  2

n  as a fraction with a common denominator, multiply by

n/2 + 2n *(2/2) -9 = 6

combine 2n and (2/2)

n/2 + (2n*2)/2 -9 = 6

Combine the numerators over the common denominator.

(n+2n*2)/2 - 9 = 6

Simplify each term.

(n(1+2*2))/2 - 9 = 6

(n(1+4))/2 -9 = 6

(n*5)/ 2 - 9 = 6

5n/2 - 9 =6

Move all terms not containing  n  to the right side of the equation.

      Add  9  to both sides of the equation.

       5n/2 = 6 + 9

        5n/2 = 15

Multiply both sides of the equation by  2/5

2/5 * 5n/2 = 2/5 *15

Simplify both sides of the equation.

     2/5 * 5n/2

            Cancel the common factor of 2

            Cancel the common factor of  5

n = 2/5 *15

            Cancel the common factor of  5

 n = 2 * 3

Multiply

n = 6

.

Answer:

n=6 in this question i think

Answer:

1. C

2. A

Step-by-step explanation:

Step 1: Write equation

3x - 1 = 7

3x = 8

Step 2: Use 1st equation and solve

3x = 8

x = 8/3

Step 3: Use 2nd equation and solve

3x = 8

x = 8/3

Both equations have equivalent solutions and the 2nd equation is the simplified version of the 1st.

Answer:

Number two

Step-by-step explanation:

it took the test

Answer:

GH = 17

Step-by-step explanation:

Given that H is the midpoint of segment GI, and GH = 5x + 2, HI = 9x - 10, GH is congruent to HI. This implies GH = HI.

Therefore:

[tex] GH = HI [/tex], which will give us the following equation:

[tex] 5x + 2 = 9x - 10 [/tex]

Solve for x

[tex] 5x + 2 - 9x = 9x - 10 - 9x [/tex] (subtracting 9x from each side)

[tex] -4x + 2 = -10 [/tex]

[tex] -4x + 2 - 2 = -10 - 2 [/tex] (subtracting 2 from each side)

[tex] -4x = -12 [/tex]

[tex] \frac{-4x}{-4} = \frac{-12}{-4} [/tex] (dividing both sides by -4)

[tex] x = 3 [/tex]

GH = 5x + 2

Plug in the value of x

GH = 5(3) + 2 = 15 + 2

GH = 17

Answer:17

Step-by-step explanation: trust me bro

Answer: C

Step-by-step explanation:

30 km/s x 60 = 1800 (1 minute)

1800 x 60 = 10800 (1 hour)

Answer:

C.  108,000 km

Step-by-step explanation:

use distance = velocity x time

30  km x 3600 sec  x  1 hr

      sec         1 hr

= 108,000 km

Answer:

x=-9

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Subtract 4x from both sides.

Step 4: Divide both sides by 4.

Answer:

Vertically opposite angles are angles that are formed opposite of each other when two lines intersect, and they are always equal.

Thus, Angle PBH is 118 degrees.

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

Finding the value of c:

[tex]3c+94=118[/tex]

Subtract 94 from both sides:

[tex]c+94-94=118-94[/tex]

[tex]3c=24[/tex]

Divide both sides by 3:

[tex]\frac{3c}{3}=\frac{24}{3}[/tex]

[tex]c=8[/tex]

Answer:

T(n) = 1800 + 58n

Step-by-step explanation:

Rent reception = $1800

Charge per person = $58

Number of person who attend reception = n

Total cost = fixed cost + variable cost

Fixed cost = 1800

Variable cost = 58n

Total cost = T(n)

Total cost = fixed cost + variable cost

T(n) = 1800 + 58n

Answer:

A: Infinite

B: One

C: No Solution

Step-by-step explanation:

The sides are the same. This means that the equation has infinite solutions.

The equation has one solution.

[tex]2x+7=2x\\\\2x-2x+7=2x-2x\\\\\boxed{7\neq 0}[/tex]

The final result is a contradiction. The equation has no solution.

Answer:

Does this help

Step-by-step explanation:

10 pieces would cost $30  

Mabey I am wrong

Answer:

8

Step-by-step explanation:

6|+|−2|

=6+|−2|

=6+2

=8

Answer:(

7 y − 3 ) ( 5 y + 4 )

Answer:

696

Step-by-step explanation:

[tex]\frac{m}{8} = 87[/tex]

First I would multiply each side by 8 to find what M is (because if you multiple m/8 by 8 the 8s will cancel out).

[tex]m=87*8\\m = 696[/tex]

Because any number divided by 1 would just be itself, 696/1 is just 696.

Answer: m/1= 7.125 or 7.1 (rounded)

Step-by-step explanation:

if m/8=57 then m/1 multiplied by 8 would be 57 . so you do the opposite and divide 57 by 8.

Answer:

r=5

Step-by-step explanation:

5x5x5=125

The first thing he has to do is take that "minus" sign through the parentheses containing the second polynomial. Some students find it helpful to put a " 1 " in front of the parentheses, to help them keep track of the minus sign. Here's what the subtraction looks like, when working horizontally.

Answer:

For 7x-9<12, the answer is x<3

For 14x+8>11, the answer is x>3/14

Step-by-step explanation: Isolate the variables by dividing each side by factors that do not contain the variable.

I hope this helps you out! :)