Solve the system by elimination. . 4x-9y=-21 , -4x-3y=9

Answers

Answer 1
(-3, 1)
4x-9y=-21
+-4x-3y=9
-12y= -12
y=1

4x- 9(1)= -21
4x-9=-21
+9 +9
4x= -12
x=-3

Related Questions

Please help brainiest will give you!

Find the slope of it!
A. -3
B. -1/3
C. 1/3
D. 3

Answers

The correct answer is B

Evaluate y(5- (6-z) )
if y= 4 z= -6

Answers

Answer: -27

Step-by-step explanation:

Y(5-(6-z))
4(5-(6-(-6))
4( 5-12) = 4(-7) = -28

Find the value of x that will make A||B.
A
B
5
4x + 12
X = [?]

Answers

Answer:

it has to be in the negative numbers

Step-by-step explanation:

reason is that if you add positive numbers to a negative then the number goes down but back up to 0

Answer:

-20

Step-by-step explanation:

I think that is right I might be trippin tho I think I'm tripping but  also think it's right not 100% sure tho

pls help!!! i will give brainliest!!

Answers

Answer:

About 84 liters

Step-by-step explanation:

Length*width*fill

24*19*0.75

111.51 liters*0.7=83.62=83.6 or 84 (estimated)

All in liters

Hope this helped :)

Answer:

It is about 84 litres to be exact 83.62

Step-by-step explanation:

Hope this helped have an amazing day!

Can someone please tell me the answers for this question

(I'll dm you the screenshots on Twitter)

Answers

Ooooooomkkkkkkkkkkkkk

What would the perimeter of a triangle be if the side lengths were 5x+2, 3x-5, and x+10

Answers

5x + 2 + 3x - 5 + x + 10 =

9x + 7

In a tennis club there are 3 times as many right-handed players as there are left-handed players. If there are 72 players in total, how many are left-handed?

Answers

Answer 18

Step-by-step explanation:

Which expression is not equivalent to -3x + 24? Select all that apply.

A. -3(x - 8)
B. -(3x + 24)
C. 3/2(-2x + 16)
D. -1/3( 9x + 8)
E. 6(-1/2x - 4)
F. 8(-3/8x + 3)

Answers

Answer:

B, D, and E

Step-by-step explanation:

You'll have to distribute each and put them into a full equation again.

A. -3x + 24

B. -3x - 24

C. -3x + 24

D. -3x - 8/3

E. -3x - 24

F. -3x + 24

I bolded the ones that did not equal -3x + 24

so your answer is B, D, and E

The table shows the relationship of how many pounds of cherries are needed to make a certain number of pies:


Number of Pies
6
12
18
Pounds of Cherries
4
8
12


Which graph below shows plots of equivalent ratios for this situation?

A. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 20, 30 and 30, 45 and 40, 60.

B. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 20, 30 and 30, 30 and 40, 30.

C. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 30, 20 and 45, 30 and 60, 40.

D. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 20, 50 and 40, 30 and 60, 20.

Answers

Answer:

C. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 30, 20 and 45, 30 and 60, 40.

Step-by-step explanation:

If we take two of the original points from the data and put them in to two point form we get the following equation.

(6,4) and (12,8)

(y-4) = [(8-4)/(12-6)](x-6)

y = 2/3x

You have to start a the origin since we can only have enough ingredients to make pies and we can't start with partial pies. So move to y intercept up by 2.

Put the x values in for answer C and you'll return the y values.

Answer:

what the guy above me said and its c

Step-by-step explanation:

Which of the following best describes an Extraneous Solution?

Answers

Answer:

An extraneous solution is a solution obtained through algebraic manipulations that is not a solution to the original equation.

Step-by-step explanation:

An extraneous solution is a solution obtained through algebraic manipulations that is not a solution to the original equation.

there are 10 boys and 20 girls in a class.
the class has a test.
the mean mark for the class is 60.
the mean mark for the girls is 54.
work out the mean mark for the boys.

Answers

Step-by-step explanation:

There are 10 + 20 = 30 total students in the class.

Total marks for the class = 60 * 30 = 1800.

Total marks for the girls = 54 * 20 = 1080.

=> Total marks for the boys = 1800 - 1080 = 720.

Mean mark for the boys = 720 / 10 = 72.

A red car is traveling at 10 m/s, south next to a blue car that is traveling in the
same direction at 8 m/s. How fast is the red car traveling relative to the blue car?

Answers

Answer:2.0 m/s,south

Step-by-step explanation:

The linear combination method gives a solution of (–4, 2) for which of these systems of linear equations? 3 x + 13 y = 14. And 6 x + 11 y = -2. 4 x + 5 y = 12. And 8 x + 3 y = -4. 5 x + 4 y = 12. And 7 x + 8 y = 12. 10 x + 3 y = 8. And 17 x + 6 y = 10.

Answers

Answer:

A. [tex]3x + 13y = 14[/tex] and [tex]6x + 11y = -2[/tex]

Step-by-step explanation:

Required

Determine which system of equation satisfy (-4,2)

To do this, we simply substitute -4 for x and 2 for y in the given functions.

A.

[tex]3x + 13y = 14[/tex] and [tex]6x + 11y = -2[/tex]

[tex]3x + 13y = 14[/tex]

[tex]3(-4) + 13(2) = 14[/tex]

[tex]-12 + 26 = 14[/tex]

[tex]14 = 14[/tex]

[tex]6x + 11y = -2[/tex]

[tex]6(-4) + 11(2) = -2[/tex]

[tex]-24 + 22 = -2[/tex]

[tex]-2 = -2[/tex]

The above shows that the given linear combination has a solution of (-4,2).

Hence, this option answers the question and there is no need to check other options

Answer: the answer is A

Step-by-step explanation:

What is the least common Denominator for 29/40

Answers

Answer:

You need to know the least common denominator (LCD) of 40 and 29 if you want to add or subtract two fractions with 40 and 29 as denominators. The least common denominator, also called lowest common denominator (LCD), of 40 and 29 is 1160 .

Step-by-step explanation: hope this helps

PLSSS HELPPPPPP I WILL MARK BRAINLIEST!!!!!!!

THIS IS A solve multistep inequalities PROBLEM

Answers

Answer:

y<1

Step-by-step explanation:

-8y+3>-5

-8y>-8

y<1

PLS HELP MEEE ITS DUE IN A FEW MINUTES

Answers

Answer:

x=7

Step-by-step explanation:

Answer:

x = 7

Step-by-step explanation:

Equating the expression for area to the given area  

2x² - 7x - 4 = 45 ( subtract 45 from both sides )

2x² - 7x - 49 = 0 ← in standard form

To factor consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 2 × - 49 = - 98 and sum = - 7

The factors are - 14 and + 7

Use these factors to split the middle term

2x² - 14x + 7x - 49 = 0 ( factor the first/second and third/fourth terms )

2x(x - 7) + 7(x - 7) = 0 ← factor out (x - 7)

(x - 7)(2x + 7) = 0

equate each factor to zero and solve for x

x - 7 = 0 ⇒ x = 7

2x + 7 = 0 ⇒ 2x = - 7 ⇒ x = -  

Thus the positive value for x is x = 7

(also, this answer isn't mine, and love the fire by bts armyyy)

I needdd helpppppppppp

Answers

Answer:

answer should be B

Step-by-step explanation:

hopefully this helps

Answer: Second one

Step-by-step explanation:

1/2 * 3 = 3/6

1/3 * 2 = 2/6

3/4 * 3 = 9/12

2/3 * 4 = 8/12

-1/4 * 3 = -0.75

-2/3 * 4 = -2.67

-1 = -1

3/4 = 0.75

Simplify √9a^2 if a<0
Answer not 5.5

Answers

Answer:

√9a2+16a2 = √25a2 = 5a

Step-by-step explanation:

Step-by-step explanation:solution given:

√(9a²=9a is your answer

Suppose that a bond has a face value of ₱ 100,000 and its maturity date is 10 years from now. The coupon rate is 5% payable semi-annually. Find the price of the bond, assuming that the required yield is 4%.

Answers

Answer:

Bond Price​= $108,175.71

Step-by-step explanation:

Giving the following information:

Face value= $100,000

Coupon rate= 0.05/2= 0.025

YTM= 0.04/2= 0.02

Time period= 10*2= 20 semesters

To calculate the price of the bond, we need to use the following formula:

Bond Price​= cupon*{[1 - (1+i)^-n] / i} + [face value/(1+i)^n]

Bond Price​= 2,500*{[1 - (1.02^-20)] / 0.02} + [100,000/(1.02^20)]

Bond Price​=  40,878.58 + 67,297.13

Bond Price​= $108,175.71

In this exercise we have to use the knowledge of finance to calculate the stipulated value through the percentages, thus we find that:

Bond Price will be  [tex]\$108,175.71[/tex]

From the information given in the text we found that:

Face value: [tex]\$100,000[/tex] Coupon rate: [tex]0.05/2= 0.025[/tex] YTM: [tex]0.04/2= 0.02[/tex] Time period: [tex]20 \ semesters[/tex]

To calculate the price of the bond, we need to use the following formula:

[tex]Bond\ Price = cupon*{[1 - (1+i)^{-n}] / i} + [face \ value/(1+i)^n][/tex]

So with the formula already informed we will replace the values ​​given in the text find what we want.

[tex]Bond \ Price = 2,500*{[1 - (1.02^{-20})] / 0.02} + [100,000/(1.02^{20})]\\Bond Price= 40,878.58 + 67,297.13\\Bond Price= \$108,175.71[/tex]

See more about finances at: brainly.com/question/10024737

What is the slope of this line? please explain because it is confusing if I only got the number of the slope:)

Answers

Answer:

8/3

Step-by-step explanation:

Use rise over run. Find two points that are at perfect points. For example (3,2). Don't use something like (2.45, 7.34), That will make it difficult. I used (0, 4) and (-3, 4). To get from (-3,4) to (0,4), you have to go up 8 and to the right 3. Always count up or down first and then side to side.  

Find the slope of a line perpendicular to each given line.

Answers

Answer:

D) 2

Step-by-step explanation:

Reciprical of slope

-1/2

reciprical is

+2/1

2

6 to the power of 2 equal ?

Answers

Answer:

36

Step-by-step explanation:

Whenever something is to the power of 2, just think of the number multiplied twice :) Hoped this helped.

The socks you like to wear are on sale when you buy 2 pairs

Answers

Is there more to this question?

Will give crown help

Answers

Answer:

[tex]m=\frac{5}{4}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-5, -2)

Point (-1, 3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute [SF]:                    [tex]m=\frac{3+2}{-1+5}[/tex]Add:                                     [tex]m=\frac{5}{4}[/tex]

Answer:

5/4

Step-by-step explanation:

you can also use rise/run

you go up 5 and over 4

What is the equation of the line that passes through the point (4, 3) and has a slope
of 1?

Answers

Answer:

y=x-1

Step-by-step explanation:

Answer:

y=x1

Step-by-step explanation:

What is the length of BC?
Enter your answer in the box.

Answers

Answer:

Line BC = 17

Step-by-step explanation:

Since Angle B and Angel C are congruent, the opposite lines are also congruent. (line CA is congruent to line BA)

Therefore:

x+9 = 2x -8

17 = x

x = Line BC

Line BC = 17

What is x?
Please give an explanation too.
First answer - Brainliest
20p

Answers

Answer:

x=136°

Step-by-step explanation:

x=136° ( as it's vertical angle to 136°)

1 i) Consider a triangle ABC shown below. If angle LA = 3r and _C = 2x then find the value of z.

Answers

Answer:

i don't know if this is what you're asking but here you go

Step-by-step explanation:

90 + 3x + 2x = 180

90 + 5x = 180

- 90           - 90

5x = 90

/ 5     / 5

x = 18

Use the quadratic model y = −4x2 − 3x + 4 to predict y if x equals 5.

Answers

Answer:

-111

Step-by-step explanation:

substitute 5 in place of each x

    -4(5)^2 - 3(5) + 4

then evaluate or type it into your calculator

    -100 - 15 + 4

Answer:

It is -111

Step-by-step explanation:

Hope this helped have an amazing day!

If P(A) is ⅗. Find P (not A)​

Answers

Answer:   2/5

Work Shown:

P(A) + P(not A) = 1

P(not A) = 1 - P(A)

P(not A) = 1 - 3/5

P(not A) = 5/5 - 3/5

P(not A) = (5-3)/5

P(not A) = 2/5

Step-by-step explanation:

P(A) + P(not A) = 1. Since P(A) = 3/5, we have:

P(not A) = 1 - P(A) = 1 - 3/5 = 2/5.

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