Solve the problem using ELIMINATION
20x + 2y = 18 10x + y = 9

Answers

Answer 1

Answer:

Infinitely many solutions.

Step-by-step explanation:

Multiply the second equation by -2, then add the equations together

(20x+2y=18)

−2(10x+y=9)  

20x+2y=18

−20x−2y=−18

Add these equations to eliminate x

0=0

Infinitely many solutions.


Related Questions

Which inequality represents the stated situation : A theater is made to receive no more than 750 spectators. Group of answer choices

Answers

Answer:

C. s ≤ 750

Step-by-step explanation:

A. s≥750

B. s=750

C. s≤750

D. s<750

'no more than' in inequality means "less than or equal to"(≤) which means that the quantity could be less than or equal to.

From the question given, the theater can only receive less than 750 spectators or 750 spectators but no more than 750 spectators

The statement can be represented by the inequality;

s ≤ 750

Where

s means spectators


letter code into
the answer
box. All CAPS,
no spaces.

Answers

Answer: id-k C and don’t know didn’t look into it to much

Step-by-step explanation:

What is the GCF of 40x,25

Answers

Answer:

The GCF of 40x and 25 is 5.

Step-by-step explanation:

5 goes into both 40 and 25.

Can someone please help I’ve been trying to solve this for a while and can’t so if you’d like to help me feel free to! :)

Answers

Answer:

The product means multiply

The second one: 5x=15

Step-by-step explanation:

Hope that helps!!!!!

Write the equation of the line perpendicular to y = 6/5x + 4/5 that passes through the point (-3,2).

Answers

Answer:

The equation of the perpendicular line of the given line is

 [tex]y = \frac{-5}{6} x -\frac{1}{2}[/tex]

Step-by-step explanation:

Step(i):-

Given the equation of the line

         [tex]y = \frac{6}{5} x + \frac{4}{5}[/tex]

cross-multiplication, we get

       5y = 6x +4

The equation of the straight line is 6x - 5y +4=0

The equation of the perpendicular line to the given line is

                        b x - ay +k=0

The equation of the perpendicular line to the given line is   -5x-6y +k=0

This line passes through the point (-3,2)

    ⇒       - 5(-3) -6(2)+k=0

     ⇒       15 -12 +k=0

     ⇒              3 +k=0

       ⇒              k =-3

Step(ii):-

The equation of the perpendicular line is

                                  -5x-6y-3=0

                                  5x + 6y +3 =0

                                        6y = -5x-3

                                          [tex]y = \frac{-5}{6} x -\frac{3}{6}[/tex]

Final answer:-

The equation of the perpendicular line of the given line is

 [tex]y = \frac{-5}{6} x -\frac{1}{2}[/tex]

I'm confused on this ​

Answers

Answer:

y= -2/3x +4

Step-by-step explanation:

(0,4) and (6,0)

m= (y2-y1)/(x2-x1)

m= (0-4)/(6-0)

m= -2/3

y-y1=m(x-x1)

y-4= -2/3(x-0)

y-4= -2/3x

y= -2/3x +4

Answer:

D

Step-by-step explanation:

Almost positive it's D. When you take two points on the line, you'll get a slope of 2/3. Since it's going down left to right, it's going to be negative. SOOO -2/3. The y-intercept is 4 because, well that's where the line crosses the y-axis.


Determine the area, in square units, of the triangle below. Round your answer to one decimal place.
1.53
26°
1.22

Answers

Answer:

Area =0.41 units^2

Step-by-step explanation:

sin 26 degrees=height/1.53

height=.438371 x 1.53=0.67

Area =(1/2)(0.67)(1.22)=0.41 units^2

What’s equals x

-9t + 2 = 56​

Answers

t=-6

Step by step explanation:
I’m pretty sure you meant what’s the value of t.
-9t + 2 = 56
-9t = 54
t = -6

11) A $50 pair of shoes is discounted by 15%. What will be the new price of the shoes?

Answers

Answer:

the new price is $42.5

Step-by-step explanation:

50 × .15 = 7.5 = 50 - 7.5

10% of 50 = 5
5% = 10%/2 = 2.50
5 + 2.50 = 7.50

Discount = $7.50

50 - 7.50 = 42.50

Answer = $42.50

Find the area of the trapezoid a21 b22.50 c11.25 d42

Answers

I think H? Maybe if not my bad

i need help in mathematics please i will give branliest


4. Find the value of x so that the mean of the given data : 14, 6,2x,8,10,4 is 8

5.what number should be included in the data 2,8,7,4 and 9 so that the mean is 6 ​

Answers

Answer:

0

Step-by-step explanation:

find mean of given numbers u notice that mean is actually 6 so no number is required to be included

Answer:

4. x = 35. Number 6 should be included

Step-by-step explanation:

Mean is the average

4.

Data given:

14, 6, 2x, 8, 10, 4

The mean is

mean = sum of the data / number of data(14 + 6 + 2x + 8 + 10 + 4)/6 = 842 + 2x = 6*82x = 48 - 422x = 6x = 3

5. Let the added number is x, then the mean is:

(2 + 8 + 7 + 4 + 9 + x)/ 6 = 6x + 30 = 36x = 36 - 30x = 6

Which of these statements is true? (Select all that apply.)
1. Any reflection can be replaced by a rotation.
2. Any translation can be replaced by two dilations.
3. Any dilation can be replaced by two reflections.
4. Any translation can be replaced by a rotation.

Answers

Answer:

The answer is number 3

Step-by-step explanation:

I hada this question on a quiz and i clicked this and it was rigt

porfavor ayúdame no entiendo esto trabajó
* en el siguiente problema anteriormente en la unidad ahora utiliza el proceso de seis pasos para resolver problemas deberá configurar un sistema de ecuaciones utilicé un enfoque gráfico para resolver sistemas.


* tienes 14 monedas en tu bolsillo que son 25 centavos o 5 centavos el valor total de las monedas es de $2.50 ¿ cuantas monedas de cada tipo tienes? ​

Answers

The answer is 9 quarters and 5 Nichols

I need help with this! I'm giving branliest!
6/2 (1+2)

Answers

Answer:

9

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

SOLVE FOR BOTH K's PLS

Answers

Answer:

4 and -3 if im not wrong......

?? Please help I’m confused

Answers

Answer:

the 4 would equal 16

the 2 would equal 4

To get this you would have to multiply the number by the scale factor of 4

4(4)=16

2(4)=8

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

Hope this helps

What is the value of 3(x - y) if x = 9 and y = -2*

Answers

Answer:

33

Step-by-step explanation:

1. 3(x - y)

2. 3(9 - -2)

3. 3(9 + 2)

4. 27 + 6

5. 33

ExplanationGiven the expression.

[tex]3(x - y)[/tex]

where x = 9 and y = - 2.

Substitute x = 9 and y = -2 in.

[tex]3(9 - ( - 2)) \\ 3(9 + 2) = 3(11) \\ 33[/tex]

Hence, the answer is 33.

Answer

[tex] \large{33}[/tex]

factor the trinomial below.
4x^2+12x+9
a. (2x+3)(2x+3)
b. (4x+1)(x+9)
c. (2x+1)(2x+9)
d. (4x+3)(x+3)

Answers

Answer:

(2x+3) (2x+3) so A

Step-by-step explanation:

Hope this helps have a great day:)

First answer gets Brainly!

Answers

total cost: $58.50

9 folders x $2.50 = $22.50

9 notebooks x 4 = $36

22.50 + 36 = $58.50

hope this helps!

Answer:

58.50

Step-by-step explanation:

Hope it helps and I hope you have a wonderful rest of your day!!!! :)

rewrite sin^4x that involves only the first power of cos​

Answers

Answer:

We want to rewrite:

sin^4(x)

in a way that only involves the first power of the cosine function.

We know that:

sin^2(x) = 1 - cos^2(x)

Then:

sin^4(x) = sin^2(x)*sin^2(x) = sin^2(x)*(1 - cos^2(x))

Now we know that:

cos(2x) = cos^2(x) - sin^2(x)

then

cos(2x) + sin^2(x) = cos^2(x)

We can replace that in our equation to get:

sin^2(x)*(1 - cos^2(x)) =  sin^2(x)*(1 - cos(2x) - sin^2(x) )

sin^2(x)*(1 - cos(2x) - sin^2(x) ) = sin^2(x) - sin^2(x)*cos(2x) - sin^4(x)

then:

sin^4(x) =  sin^2(x) - sin^2(x)*cos(2x) - sin^4(x)

sin^4(x) + sin^4(x) =   sin^2(x) - sin^2(x)*cos(2x)

2*sin^4(x) =  sin^2(x) - sin^2(x)*cos(2x)  = sin^2(x)*(1 - cos(2x))

sin^4(x) = sin^2(x)*(1 - cos(2x))/2

So we rewrite the equation in such a way that we only have the first power of the cosine function.

Helpppp pleaseeee

Been struggling

Answers

Answer:

Yes

Step-by-step explanation:

15% of 17500 is 2625 which you would subtract of off the original price. So it would be 14875, which is less than 15000.

Please help me tysm plzzzzz

Answers

Step-by-step explanation:

[tex]{ \huge {\underline {\underline {\mathtt {\red{♡Answer}}}}}}[/tex]

=> X - 2 = -8

=> X=(-6) - 2

=> -8

Answer:

x = -6

Step-by-step explanation:

x - 2 = -8

Add 2 to both sides to isolate the variable, x.

x - 2 + 2 = -8 + 2

-2+2 = 0

-8+2 = -6

Therefore,

x = -6

Check:

-6 -2 = -8

Hope this helps

If the sales tax rate is 7% in New York, then how much sales tax would you pay in New York for a $34 pair of pants?

Answers

Answer:

$36.38

Step-by-step explanation:

If the sales tax rate is 7% in New York, then how much sales tax would you pay in New York for a $34 pair of pants?

Given data

Tax= 7%

Cost = $34

Let us solve for the amount of tax

=7/100*34

=0.07*34

=2.38

Hence the total is =2.38+34

=$36.38

please help me quickly!

Answers

Answer:

1) 3:24

2) 3:24 and 3:25

Step-by-step explanation:

just look at the time given

Answer:

3:23 and 3:24

Step-by-step explanation:

2xy +1 = 1
solve for x

Answers

Answer:

the answer of this question is 0

A. First, convert this equation into y-intercept form

y = 2x + 1

B. 2 is the slope: 1 is the y-intercept

Then, plug in 1 for y and solve

C. 1 = 2x + 1

Therefore, x is 0

9t + 21t - 8
It needs to be factored

Answers


I think this is the answer 2(15t−4)
I think it is 30t-8
But I don’t think I did it right

A scale drawing of a house shows 9cm x10cm. If
6cm=12 ft, what are the actual dimensions?

Answers

Answer:

18ft x 20ft

Step-by-step explanation:

(I'm kinda in a rush so I can't explain right now, sorry!)

Hope that helped though :)

The actual dimensions of the house is 18 feet by 20 feet.

Scaling is used to either increase or decrease the size of a figure to create an image.

Given that a scale of 6cm to represent 12 ft. Hence:

9 cm = 9 cm * (12 ft. per 6 cm) = 18 feet.

10 cm = 10 cm * (12 ft. per 6 cm) = 20 feet.

The actual dimensions of the house is 18 feet by 20 feet.

Find out more on scaling at: https://brainly.com/question/25324744

A cylinder
has a diameter of 6 cm and a height of 14 cm. What is the approximate volume of a cone with the same diameter and height as the cylinder?

Answers

Step-by-step explanation:

i already done it.thank you

Allan's father is 120% of Allan's height. If his father is 180cm, how tall is Allan?

Answers

Answer:

Allan is 150cm tall.

Step-by-step explanation:

120% of 150 is 180.

So, the answer is 150cm

Hope this helps! :)

ayoo could someone please help me with my math?? multiple selection answer:)
Which of the following options represents an equation that can be used to solve for the missing side of a right triangle? Select all that apply.

Answers

Answer:

choice 1) a^2+b^2 = C^2

and

choice5) c = sq rt(a^2+b^2)

Other Questions
What is advantags of hard engineering? SOLVE FOR BOTH K's PLS Sky-High Hannah Roberts Emotive language How do I control water? Like with My Hand or body? please help me quickly! What is the value of 3(x - y) if x = 9 and y = -2* Whats equals x -9t + 2 = 56 [tex]5 \frac{5}{6} - 1 \frac{1}{4} = [/tex] Allan's father is 120% of Allan's height. If his father is 180cm, how tall is Allan? 17Select the correct answer from the drop-down menu.A whole number is 6 more than 2 times another number. The sum of the two numbers is less than 50. This can be written in an inequality asx+2x+6 < 50, where x represents the smaller number.From the set {13, 14, 15, 16, 17), the values of x for which the inequality holds true areResetNext How does the author develop her argument in this partof the article?AlboRead the excerpt from "Healthy Eating.""I was taking all these pills like an old woman," saidNaar, a neonatology nurse at Baptist Hospital. "Myblood pressure is hereditary, but I added to it by addingthe pounds and eating horribly every day."...A nutritionist took her shopping and introduced her tothe joys of cauliflower. She upped her workouts,stopped eating hamburgers three times a week andscaled back on the Cold Stone pistachio ice cream.O She gives several reasons why people need tomake changes to their eating habits and exerciseroutines.O She shares an anecdote to show that people candrastically improve their health by making smallchanges to their diets.O She provides facts to show how helpful medicationand exercise can be for someone who wants to livea healthier lifestyle.O She uses expert quotations to show that makingsmall changes to one's diet takes a lot of time anddetermination.Today, Naar is 20 pounds lighter and down to two pillsa day. You are Ramesh/ Rohini living at ABC Janakpuri, Delhi. Write a letter to your friend inviting him to come to Delhi during the vacation. Mention a few attractions that you want both of you to visit. i need help i have 3 mins left cinco oraciones con sujeto simple y cinco oraciones consujeto compuesto. I need help please. Which two taxonomic levels are organismsmost commonly referred? Select a location within each of the following biomes and fill in the missing information on the table.What is the Latitude and Species Richness of the boreal forest (look at attachments) BioInteractive Biome Explorer What did Elijah Muhammad overcome? How can an organism's environment affect its traits? Of the flowers in Bellas garden, 5/8 are tulips. What percent of the flowers in the garden are tulips?