Pls pls help meh I just need a simple explanation pls I beg I’ll give brainliest I only need #9

Answer:

[tex]-2(3x - 4) = -16[/tex] and [tex]20- 15x = 6 - 2(4x + 7)[/tex]

Step-by-step explanation:

Given

[tex]-2(3x - 4) = -16[/tex]

[tex]\frac{1}{2}(10x + 2) = 6[/tex]

[tex]20- 15x = 6 - 2(4x + 7)[/tex]

[tex]\frac{1}{3}(9x - 12) + 6=-10[/tex]

Required

Equations with [tex]x = 4[/tex] as a solution

[tex]-2(3x - 4) = -16[/tex]

Divide both sides by -2

[tex]3x - 4 = 8[/tex]

Add 4 to both sides

[tex]3x - 4 +4= 8+4[/tex]

[tex]3x =12[/tex]

Divide both sides by 3

[tex]x = 4[/tex]

[tex]\frac{1}{2}(10x + 2) = 6[/tex]

Multiply both sides by 2

[tex]10x + 2 = 12[/tex]

Subtract 2 from both sides

[tex]10x + 2 -2= 12-2[/tex]

[tex]10x = 10[/tex]

Divide both sides by 1

[tex]x = 1[/tex]

[tex]20- 15x = 6 - 2(4x + 7)[/tex]

Open bracket

[tex]20 - 15x = 6 - 8x - 14[/tex]

Collect like terms

[tex]8x - 15x = 6 - 14 - 20[/tex]

[tex]-7x = -28[/tex]

Divide both sides by -7

[tex]x = 4[/tex]

[tex]\frac{1}{3}(9x - 12) + 6=-10[/tex]

Subtract 6 from both sides

[tex]\frac{1}{3}(9x - 12) + 6-6=-10-6[/tex]

[tex]\frac{1}{3}(9x - 12) =-16[/tex]

Multiply both sides by 3

[tex]9x - 12 = -48[/tex]

Add 12 to both sides

[tex]9x - 12 +12= -48+12[/tex]

[tex]9x = -36[/tex]

Divide both sides by 4

[tex]x =-4[/tex]

[tex]-2(3x - 4) = -16[/tex] and [tex]20- 15x = 6 - 2(4x + 7)[/tex] have [tex]x = 4[/tex] has a solution

Answer: 1st and 3rd

Step-by-step explanation:

Answer:

x=1 y=14

multiply x-y=-13 by 3 so the x would cancel out. solve for y

then plug in y to one of the equations to get x

Answer: the answer is x= -2 , y=11

Step-by-step explanation:

First

1: we have to find the answer for x in x-y= -13

2: add y on both sides of the equation

3: we will get x= -13+y

Second

1: Substitute x in 3x-y= -17 with x=-13+y

2: then you will get 3(-13+y)-y= -17

3: multiply 3 with -13 and y

4: you will get -39+3y-y =-17

5: add 3y and -y

6: you will get -39+2y= -17

7: add 39 on both sides of the equation

8: you will get 2y=22

9: divide 2 on both sides

10: you will get y= 11

Third

1: plug 11 for y in x= -13+y

2:  then you will get x= -13+11

3:  you will x= -2

So x= -2 and y= 11

To find the area of a triangle we use this equation:

[tex]\frac{1}{2} bh\\[/tex]

b= base

h= height

So since we are given the information that the sides are 6 and the height is 5 we simply can plug the information right into the equation:

[tex]\frac{(6)(5)}{2}[/tex]= 15

So the are is 15 inches sqaured, hope this helps :)

Answer:

Im pretty sure its  y= 5x-9

Step-by-step explanation:

Hope this helps! Have an Amazing day!!

Answer:

the first one....

6=w+2.

Answer:

8 dimes

7 quarters

Step-by-step explanation:

Let number of

Dimes = x ; quarters = y

10x + 25y = 255 ___(1)

25x + 10y = 270 ___(2)

From (1)

10x = 255 - 25y

x = (255 - 25y) / 10

x = 25.5 - 2.5y

Put x = 25.5 - 2.5y in (2)

25(25.5 - 2.5y) + 10y = 270

637.5 - 62.5y + 10y = 270

-52.5y = - 367.5

y = 367.5 / 52.5

y = 7

x = 25.5 - 2.5(7)

x = 25.5 - 17.5

x = 8

Answer: 1125

Step-by-step explanation:

Answer:

The cost per ounce is $0.23

Step-by-step explanation:

Set up fraction:

ounce/cost

15.4/3.59 = 1/x

cross multiply

15.4x=3.59

x=3.59/15.4

x=0.233116883117

x=$0.23

The cost per ounce is $0.23

Answer:

$0.23

Step-by-step explanation:

[tex]\frac{15.4}{3.59} =.23.........[/tex]

$0.23

Answer:

These relationships are realted because the variable is multiplied by ten to get the function.

9cm: 90mm

12 1/4cm: 122.5mm

50cm: 500mm

88.49cm: 884.9mm

By the way, can you follow me on Brainly?

Thanks!

Answer:

-5

Step-by-step explanation:

Assuming that each unit is 1, then it is rise over run, which is -5/1=-5

Answer:

C

Step-by-step explanation:

The mean is 4 because when finding the average which is mean, was 4. The median is 5, so the answer is 5

Answer:

The number C

Step-by-step explanation:

Its in the next picture

By adding the lengths of the two pieces of wood (10.23 cm and 17.65 cm), they would be 27.88 cm long when attached.

Addition is the process of adding two or more numbers together. The numbers being added are known as addends, while the outcome of the addition process, or the final response, is known as the sum.

Given that,

The length of your wood = 10.23

The length of your friend's wood = 17.65

Denote the length of your piece of wood as "x" and the length of your friend's piece as "y".

In this case,

x = 10.23 cm

y = 17.65 cm.

To find the total length when they are attached,

Add the lengths as

x + y = 10.23 cm + 17.65 cm

Now, calculate the sum:

x + y = 27.88 cm

Hence,

If you attach the two pieces of wood, the total length would be 27.88 cm.

To learn more about the addition visit:

https://brainly.com/question/25421984

#SPJ6

Answer:

15)

Step-by-step explanation:

i think its that since im guessing that x5 is the length of each side and since triangles have 3 sides so i did 5 x 3 which equals 15

Answer:

i sont know what those dotted lines are but the area of the whole triangle is 1529.04

Step-by-step explanation:

Im sorry if this is not what your looking for

Answer:

Third option is correct. Hence, N<5 is the best inequality that represents the number of tickets she can buy with $8

Step-by-step explanation:

1. 10

2. -1

Step-by-step explanation:

I was taught when there's two minus signs squish then together into a big plus sign. and go on from there

Answer:

Step-by-step explanation:

4-(-6)= 10

-3-(-2)= -5

Answer:

509.94

Step-by-step explanation:

That's the answer!

trust me! Correct me if I'm wrong

don't worry I solved it so many

times and that's the answer

hope it helps you ❤

follow me for more!

first on is 98.47

second one is 411.47

Hop this helps :T

Answer:

D. 191

Step-by-step explanation:

To calculate this you need to imagine triangle which points are:

boat

Top of lighthouse

Bottom of lighthouse

That triangle has 90 degrees angle at bottom of lighthouse. That means that we can use trigonometry to determine length between boat and bottom of lighthouse

tan(25) = 89/x

x = 89/tan(25)

x = 190.86

after rounding, your final answer would be 191 feet.

Answer:

r=c/2π

3/2π

=0.47746482927

Brainlist Pls!

Answer:27/41+3/41i

Step-by-step explanation:

Just finished this problem

Answer:

guy above correct via A P E X

Step-by-step explanation:

Answer:

6 cm

Step-by-step explanation:

the cube has six faces, so each is 216/6 = 36 cm^2

so the side is [tex]\sqrt{36}[/tex]

The value of θ within the interval is 210 and 330 degrees

Given the equation;

[tex]2sin^2 \theta = 5sin \theta - 3[/tex]

The equation will become;

2P² = 5P - 3

2P² - 5P - 3 = 0

Factorize;

2P² - 6P + P- 3 = 0

2P(P-3) + 1(P -3) =0

2P + 1 = 0 and P - 3  = 0

p = -1/2 and  3

Since P = sinθ

sinθ = -1/2

θ = -30 degres

Since sine is negative in the second 3rd and 4th quadrant

θ = 180 + 30 = 210 degrees

θ2 = 360  - 30 = 330 degrees

Hence the value of θ within the interval is 210 and 330 degrees

Learn more on trigonometry here: https://brainly.com/question/24349828

Answer:

this would be a closed circle all innequalities with a greater to or equal to or less than or equal to they will always be closed if it just says less than or greater than it will be open

Step-by-step explanation:

Answer:Closed Circle To the right

Answer:

A) 5/7

Step-by-step explanation:

Equation:

-0.7n = -0.5

n = 5/7

Answer:

Step-by-step explanation:

3Y+6<24

3Y<18

Y<6

Y can be any number/integer that is less than 6.

Answer:

180 degrees

Step-by-step explanation:

Answer:D . No the translation did not preserve the segment length

Step-by-step explanation: