y=-x
y=-7x

solve system of equations algebraically
​

Answer:

19x + 550n + 200

Step-by-step explanation:

Total cost of the skirts

[tex]7x + 150n + (2n + 1) \times 200 + 4 \times 3x \\ \\ = 7x + 150n + 400n + 200 + 12x \\ \\ = \purple{ \bold{19x + 550n + 200}}[/tex]

Answer:

for question 7 : I think it is no

Step-by-step explanation:

if you plot the points on a quick rough sketch you will find that none of the coordinates are on the same line (which they would have to be for a straight line). No points in those 3 coordinates are the same so the there cannot be two points on the same x or y coordiante therefore there is no right-angles triangle.

If you plot the points roughly there will not be two perpendicular lines so there is no right-angles triangle.

sorry I realise   this is confusing :(

Also for Question 5:

Parallel should be anything y= for example, y=6

Perpendicular should be anything x= for example x=6 as y=7 is a horizontal line and x=6 is a vertical line. Y=6 would be parallel because y=(any number with no gradient e.g. 1,2,3,4,etc.) is horizontal.

Answer:

0.45

Step-by-step explanation:

Answer:

0.45

Step-by-step explanation:

5 ÷ 11  or 5.0 ÷ 11 = 0.45

Hope this helped!!! Pls mark me brainliest if you want more math answers like this! Also pls thank me!

Answer:

x = 4√5

General Formulas and Concepts:

Pre-Algebra

Trigonometry

Step-by-step explanation:

Step 1: Define

We are given a right triangle. We can use Pythagorean Theorem.

a = 19

b = x

c = 21

Step 2: Find x

And we have our final answer!

Answer:

2

Step-by-step explanation:

8=

Answer:

63/100 (the simplest form)

Step-by-step explanation:

1. Covert decimal into fraction:

0.63 = 63/100

2. Simplify (1 is the greatest common divisor of 63 and 100. The result can't be further reduced):

63/100

Answer: False

Step-by-step explanation:

To see if (-2,0) is a solution to the given equation, we can plug in the point and solve. If we get the same answer, then it is a solution.

2(-2)-3(0)=6            [multiply]

-4-0=6                     [subtract]

-4≠6

Now, the doesn't equal sign tells us that -4 is not equal to 6. This means the given point is not a solution to the equation, making it false.

Answer:

im assuming slope : 5/4 is slope

Step-by-step explanation:

the formula (y₂ - y₁) / (x₂ - x₁) is how you get slope. plug stuff in and you get (9 - 4) / (8 - 4) and thats 5/4

Answer:

y=1.25x-1

Step-by-step explanation:

Hope this helps! PS I'm not assuming anything

Question:

Sal is trying to determine which cell phone and service plan to buy for his mother. The first phone costs $100 and $55 per month for unlimited usage. The second phone costs $150 and $51 per month for unlimited usage.

The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is .

The solution to the inequality is .

Sal’s mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.

Answer:

a. [tex]150 + 51x < 100 + 55x[/tex]

b. [tex]x > 12.5[/tex]

c. At least 13 months

Step-by-step explanation:

Given

First Phone;

[tex]Cost = \$100[/tex]

[tex]Additional = \$55[/tex] (monthly)

Second Phone;

[tex]Cost = \$150[/tex]

[tex]Additional = \$51[/tex] (monthly)

Solving (a): The inequality

Represent the number of months with x

The first phone is expressed as:

[tex]100 + 55x[/tex]

The second phone is expressed as:

[tex]150 + 51x[/tex]

For the second to be less expensive that the first, the inequality is:

[tex]150 + 51x < 100 + 55x[/tex]

Solving (b): Inequality Solution

[tex]150 + 51x < 100 + 55x[/tex]

Collect Like Terms

[tex]51x-55x<100 - 150[/tex]

[tex]-4x<-50[/tex]

Solve for x

[tex]x > -50/-4[/tex]

[tex]x > 12.5[/tex]

Solving (c): Interpret the solution in (b)

[tex]x > 12.5[/tex] implies 13, 14, 15....

Hence, She'll keep the second phone for a period of at least 13 months

Answer:

I'm terrible at explaining so here's a screenshot

- Ripper

Step-by-step explanation:

Answer:

the second one

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

3 and 8 can both go into 16

Answer:

y = 2x

Step-by-step explanation:

Slope = [tex]\frac{y}{x} =\frac{2}{1}[/tex]

Answer:

a

Step-by-step explanation:

11/3  (eleven divided by three)

Answer:

Area = 76[tex]m^{2}[/tex]

Step-by-step explanation:

you can cut into two rectangles

first one:

top and bottom sides = 4m

two sides = 9m

Area = b*h = 9m * 4m = 36 [tex]m^{2}[/tex]

second one

top and bottom sides = 8m

two sides = 14m - 9m = 5m

Area = b*h = 8m * 5m = 40[tex]m^{2}[/tex]

Now add both rectangle areas for the total shaded Area = 36 + 40 = 76[tex]m^{2}[/tex]

Answer: 130 shark cookies.

Step-by-step explanation: If you divided 170 clown fidh cookies by 85 clown fish cookies you get 2. So same as 85 times 2. Then do the same with the shark cookies. 65 times 2, that equals 130.

Answer:

2000

Step-by-step explanation:

1 kilometer= 1000 meters

2 kilometrs=1000*2

2kilometers-2000meters

Answer:

20 minutes

Step-by-step explanation:

Given

[tex]Pavilion: 4\ minutes[/tex]

[tex]Green\ House: 10\ minutes[/tex]

Required

Determine the time they both arrive together

To do this, we simply determine the common multiple of both numbers:

Start by listing the multiples of 4;

[tex]4: 4,8,12,16,20,24,28......[/tex]

Next, list the multiples of 10

[tex]10: 10, 20, 30,40, 50......[/tex]

Their common multiple is: 20

Hence, they'll both arrive at 20 minutes

20 minutes Answer:

Step-by-step explanation:

Edgy

Answer:

take away four from both -4

Answer:

add 4 negative unit tiles to both sides

Step-by-step explanation:

took test on edge

Answer:

I'm pretty sure The domain of y=4[x+2] is (-infinity, infinity)

( − ∞ , ∞ )  ,  { x | x ∈ R }

Answer:

Step-by-step explanation:

3.4 times 2 is 6.8

pemdas for the second one. 2 times 6 is 12. 33+10-12, 31

102/22

4.3636

Answer:

1: 6.8

Work: 3.4 divided by 2 equals 6.8

2: 246

Work: 33 plus 10 minus 2 times 6 equals 246

3: 4

Work: 102 divided by 22 equals 4

Step-by-step explanation: I hope this helps! :)

Answer:

I think Its x=0

just did it on edg lol hope

The value of x in the expression is,

⇒ x = 0

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

We have to given that;

The expression is,

⇒ 2 (x - 3) + 9 = 3 (x + 1) + x

Now, We can simplify the expression as;

⇒ 2 (x - 3) + 9 = 3 (x + 1) + x

⇒ 2x - 6 + 9 = 3x + 3 + x

⇒ 2x + 3 = 4x + 3

⇒ 4x - 2x = 3 - 3

⇒ 2x = 0

⇒ x = 0

Thus, The value of x in the expression is,

⇒ x = 0

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ7

Answer:

Step-by-step explanation:

-3x + 4y = -20

y = x - 4

Put the second equation into the first equation in place of y.

-3x + 4 (x - 4) = -20

Multiply everything in the parenthesis by 4.

-3x + 4x - 16 = -20

Combine like terms.

x - 16 = -20

Add 16 to both sides.

x = -4

Put this into the second equation in place of x.

y = -4 - 4

y = -8

Your solution set is (-4,-8).

Hope this helps!

Answer:

(-4,8)

Step-by-step explanation:

Answer:

Ok im  using a standered form calculator:

1. 9/7x + 1/7 = -8

2. y = -6/5x - 3 =  -11

3. y = 1/3x - 2 = -10

Step-by-step explanation:

I will be glad to help more

Answer:

48x=2x

Step-by-step explanation:

im big brain can i get brainilest

Answer:

is x 4.3 and would equal 98.6?

Step-by-step explanation:

I'm very sorry but i don't know the answer to this queshtion

Answer:

Its important to ask your teacher this alot  of tests are different.  But just study the general idea of what you've learned so far.  

step-by-step explanation:

Answer:

perdón por no ayudar

Step-by-step explanation:

mucho texto