-4x - 9y = 26
8x +9y = -34
Add to eliminate y.
Subtract to eliminate y.
Add to eliminate x.
Subtract to eliminate x.

Answers

Answer 1

Answer:

add to eliminate y

Step-by-step explanation:

Because the one y is negative, you would add it to the positive y to eliminate both. A positive plus a negative is the same as subtracting from the positive number.

ex: [tex]10+-5=5[/tex] because [tex]10-5=5[/tex]

hope this makes sense :)

Answer 2

Answer:

Add to eliminate y

Step-by-step explanation:

This is because you'll want to add

-4x -9y = 26

8x +9y = -34

to get rid/eliminate the y

The reason why it's not subtract it because the it'll become

-4x-9y=26

-8x-9y=34

which makes the y-values not the reciprocal of each other and you wouldn't be able to eliminate the y.

And it's neither of the add or subtract to eliminate x because the numbers need to be the same numbers and reciprocal of each other

ex:

4 and -4

or

8 and -8

or

-10 and 10


Related Questions


The graph of a polynomial function approaches -- as x approaches -oo, and approaches to as x
approaches + Which could be the degree and leading coefficient of this function?
degree 3, leading coefficient -1
degree 4, leading coefficient 1
degree 5, leading coefficient 1
degree 6, leading coefficient -1
DONE
The answer is c
Degree 5, leading coefficient 1

Answers

Answer:

Page 1# on Edg 2022

C). Degree 5, leading coefficient 1

Page 2# (two answers for two questions)

B). x(x + 1)(x +2)

C). -2, -1, 0

Step-by-step explanation:

Just did it, hopefully I just saved you some time.

which best describes how the graph of g(x) =1/9

Answers

Answer:

Step-by-step explanation:

what is h(12) equal to?

Answers

Answer:

Human Adenovirus Type 12 (microbiology)

Step-by-step explanation:

Rewrite log; x = 4 in exponential form.
(A) X=4
(B) x = 34
(C) 4 = 3
(D) 3=4"
What is

Answers

Answer:

Step-by-step explanation

(B) x=34

Which part of the algebraic expression 7a - 4 is the constant?

7 a-4
4
7 a
7

Answers

Answer:

4 is the constant⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

4 would be constant.

A square has an area of 100 in 2
What is the perimeter of the square?
(Round to the nearest whole number if necessary)
(4 points)
40 in
50 in
200 in
10 in

Answers

Answer:

the answer is 50in

Answer:

40 in

Step-by-step explanation:

It must be 40 inches because to get an area of 100 in 2 each side has to be 10 in therefor, if you multiply 10 by 4, you get 40

PLEASE HELP ITS MY LAST, AND ITS DUE IN 6 MINUTES. SHOW A LITTLE WORK AND I WILL GIVE BRAINLIEST

Answers

Answer:

77

Step-by-step explanation:

The median is the middle number

There are 18 numbers so the middle is between the 9 and 10 numbers

76 and 78 are the 9th and 10th numbers

Average them

(76+78)/2 = 77

The median is 77

Simplify the expression (-2y+5)(y+3)

Answers

Answer:

[tex]=-2y^2-y+15[/tex]

Step-by-step explanation:

[tex]\left(-2y+5\right)\left(y+3\right)\\\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd\\a=-2y,\:b=5,\:c=y,\:d=3\\=\left(-2y\right)y+\left(-2y\right)\cdot \:3+5y+5\cdot \:3\\Apply\:minus-plus\:rules\\+\left(-a\right)=-a\\=-2yy-2\cdot \:3y+5y+5\cdot \:3\\\mathrm{Simplify}\:-2yy-2\cdot \:3y+5y+5\cdot \:3:\quad -2y^2-y+15\\-2yy-2\cdot \:3y+5y+5\cdot \:3[/tex]

[tex]2yy=2y^2\\2yy\\\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}\\yy=\:y^{1+1}\\=2y^{1+1}\\\mathrm{Add\:the\:numbers:}\:1+1=2\\=2y^2\\2\cdot \:3y=6y\\2\cdot \:3y\\\mathrm{Multiply\:the\:numbers:}\:2\cdot \:3=6\\=6y[/tex]

[tex]5\cdot \:3=15\\5\cdot \:3\\\mathrm{Multiply\:the\:numbers:}\:5\cdot \:3=15\\=15\\=-2y^2-6y+5y+15\\\mathrm{Add\:similar\:elements:}\:-6y+5y=-y\\=-2y^2-y+15[/tex]

In the following quadratic equation identify the values of a, b, and c that you would use in the quadratic formula.
7x^2-3x+9=0
A. a=7 b=-3 c=9
B. a=9 b=7 c=-3
C. a=-7 b=3 c=-9
D. a=7 b=3 c=9​

Answers

Answer:

A

Step-by-step explanation:

Let's first define what exactly the values of a, b, and c represent.

- a: this is the coefficient of the x^2 term

- b: this is the coefficient of the x term

- c: this is the constant term (no variable attached)

Our equation is: y = 7x^2 - 3x + 9.

The coefficient of x^2 is 7, so a = 7. The coefficient of x is -3, so b = -3. And finally, the constant term is 9, so c = 9.

Thus, the answer is A.

Answer:

The general quadratic equation is ax^2 + bx + c = 0

=> Here, we have: 7x^2 - 3x + 9 = 0 <=>  7x^2 + (-3)x + 9 = 0

=> a = 7, b = -3, c = 9

=> Option A is correct.

Hope this helps!

:)

math i need help with this ​

Answers

Answer:

$2.70

Step-by-step explanation:

500 - 1.25 - 1.05 - 100

500- 3.30

2, 70

Answer:

They subtract one of each

to save time just add the all the costs together

1.25+1+1.05=3.3

5-3.3=2.7

$2.70

Hope this helps

Step-by-step explanation:

9: Evaluate the following question for f(-2): ​ f(x)=3x+2

Answers

Answer:

f(-2) = -4

Step-by-step explanation:

f(x)=3x+2

Let x  = -2

f(-2) =3(-2) +2

       = -6 +2

       = -4

PLZ HELP omg
A company specializing in building robots that clean your house has found that the average amount of time kids spend cleaning their houses is about 2 hours per week with a margin error of 0.25. Which of the following is the correct window of time we can expect to the population of kids to take cleaning their house?

Between ______ hours and _____ hours.

Answers

Answer:

1.75 hours and 2 Hours

Step-by-step explanation:

Simplify the mathematical expressions to determine the product or quotient in scientific notation. Round so the first factor goes to the hundredths place.

Answers

Anwser:

I can confirm this is the correct answer because just did the test and got a 5 of 5 and i just did the math.

Step-by-step explanation:

Answer:

Image attached.

Step-by-step explanation:

We will use a calculator to simplify the expressions.

[tex]\left(4.5\cdot10^{4}\right)\cdot\left(6.8\cdot10^{-8}\right)=0.00306=3.06\cdot10^{-3}[/tex]

[tex]\left(2.8\cdot10^{2}\right)\cdot\left(6.5\cdot10^{-7}\right)=0.000182=1.82\cdot10^{-7}[/tex]

[tex]\frac{\left(7.4\cdot10^{-5}\right)\left(3.8\cdot10^{3}\right)}{\left(9.3\cdot10^{-4}\right)\left(3.2\cdot10^{5}\right)}=0.00095=9.45\cdot10^{-4}[/tex]

[tex]\frac{\left(5.6\cdot10^{-3}\right)\left(7.7\cdot10^{-9}\right)}{\left(8\cdot10^{-2}\right)\left(3.5\cdot10^{-6}\right)}=0.000154=1.54\cdot10^{-4}[/tex]

Learn more: https://brainly.com/question/1594198

Pls help with this it is real quick.

Answers

Answer:

the first one

Step-by-step explanation:

if you do PEMDAS

then i guarantee that it equals to 10

Find each product or quotient
(3.6 X 10') = 6

Answers

Answer:

6?

Step-by-step explanation:

did you give the answer in the problem?

i really need help with this

Answers

Answer:

480 in^3

Step-by-step explanation:

4*4*5=80

5*10*8=400

400+80=480

Answer:

480 in^3

Step-by-step explanation:

The volume of the large container is

V = l*w*h = 8*10 *5 = 400 in^3

The volume of the small container is

V = l*w*h = 5*4*4 =80 in^3

Add the volumes together

V = 400+80 = 480 in^3

Find the area of the rectangle ABCD plotted below.
Round your final answer to the nearest hundredth.
units?

Answers

Answer:34

Step-by-step explanation:

Area of a rectangle

 

=length⋅width

=AB⋅BC

Michelle wants to buy a cellular phone the phone is 30% off the original price if the original price of the phone is $135 what is the amount Michelle will save

Answers

Answer: 40.5

Step-by-step explanation:

135 x .30 = 40.5

Answer:

Michelle will save $40.50

Step-by-step explanation:

135x30% (.30) = 40.5

Enter the difference.
210.03−74.6=

Answers

Answer:

135.43

Step-by-step explanation:

Hope this helps! Stay safe and have a wonderful day! Peace! ✌

Answer:

135.43

Step-by-step explanation:

A curb is 4 inches high. The ramp from the sidewalk yo the street follows the same guidelines as other Ramos (no more than 4.8 degrees, so a 1:12 ratio of vertical to horizontal). What is the horizontal distance for a ramp with a 4 inch vertical distance?

Answers

Answer:

48 inches.

Step-by-step explanation:

Givens

The height of a curb is 4 inches. So, the ramp has a height of 4 inches.The ratio between vertical and horizontal distance of the ramp is 1:12.

Accoriding to the given ration, one unit of vertical distance is equivalent to 12 units of horizontal distance. So, the horizontal distance is

[tex]h=12(4 \ in)=48 \ in[/tex]

Therefore, the horizontal distance is 48 inches.

The horizontal distance for a ramp with a 4 inch vertical distance will be 48 inches.

Given,

The height of curb is 4 inches.

We have to calculate the horizontal distance for a ramp with a 4 inch vertical distance.

The ramp from the sidewalk of the street follows the same guidelines as other Ramos, no more than 4.8 degree.

Since The ratio of vertical to horizontal  is 1:12, it means for a 1 inch vertical distance the horizontal distance is 12 inches.

So, for 4 inches of vertical distance the horizontal distance will be,

[tex]12\times4=48[/tex] inches.

Hence the required horizontal distance is 48 inches.

For more details on Units follow the link:

https://brainly.com/question/3272861

Find areas of the rectangles if their sides have lengths 3 5/7 cm and 10/13 cm

Answers

Answer:

44cm

Step-by-step explanation:

This is rounded off.

precalc please help!!!

Answers

Answer:

D

Step-by-step explanation:

If sinθ = -2/3, the hypotenuse is 3. Therefore, the answer is either C or D. Then, use the pythagorean theorem to determine the value of the last leg. And the answer is D

Select all the correct answers.
Henry collects shells from the beach every day he is on vacation. Each day he collects shells, he always collects three times as many white shells as black shells. Which of these ratio statements could compare the number of white shells to black shells Henry collects in one day?
a. For every 12 white shells, there are 4 black shells.
b. For every 15 white shells, there are 3 black shells.
c. For every 26 white shells, there are 8 black shells.
d. For every 27 white shells, there are 9 black shells.
e. For every 21 white shells, there are 7 black shells.

Answers

Answer:

a,c, e

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

i did this

Janinne, Monique, and Kathy were baking cookies for a bake sale. Janinne made 68%, Monique made 3/25, and Kathy made 0.2 of the cookies. Order them from least to greatest.

Answers

Answer:

Janninne made 68% then 3/25 turned into percentage 12% then 0.2 equals 20%. So you order it by 68% (Janinee), 20% (Kathy), AND 12% (Monique)

Which equation represents the relationship between the angles in this figure?








148+b=90


148+b=180


2b+148=90


2b+148=180



What is the value of b? ___ degrees

Answers

2b+148=180

Answer:

b = 16

Step-by-step explanation:

2b+148=180

2b = 180 - 148

2b = 32

b = 32/ 2

b = 16

MAX POINTS. Brainliest for the best answer. Please explain your answer as well.

Answers

Answer:

Graphs A and C

Step-by-step explanation:

Line s : y = 1/3x - 3for x = 0 → y = 1/3(0) - 3 = 0 - 3 = -3

then the line passes through the point (0,-3)

for x = 9 → y = 1/3(9) - 3 = 3 - 3 = 0

then the line passes through the point (9,0)

and according to the picture ,only in graphs A and C the line C passes through (0,-3) and (9,0)

so the graph solution is either graph A or graph C.

   2. line t : y = -x + 5

for x = 0 → y = -(0) + 5 = 0 + 5 = 5

then the line passes through the point (0,5)

for x = 5 → y = -(5) + 5 = 0

then the line passes through the point (5,0)

and according to the picture ,only in graphs A and C the line C passes through (0,5) and (5,0).

conclusion:

both graph A and C represent correctly show Lines s and t and the point P

Remark : if you look closely to the graphs A and C ,they are the same thing.

Answer: Graphs A and C

Step-by-step explanation:

Line s : y = 1/3x - 3

for x = 0 → y = 1/3(0) - 3 = 0 - 3 = -3

then the line passes through the point (0,-3)

for x = 9 → y = 1/3(9) - 3 = 3 - 3 = 0

then the line passes through the point (9,0)

and according to the picture ,only in graphs A and C the line C passes through (0,-3) and (9,0)

so the graph solution is either graph A or graph C.

  2. line t : y = -x + 5

for x = 0 → y = -(0) + 5 = 0 + 5 = 5

then the line passes through the point (0,5)

for x = 5 → y = -(5) + 5 = 0

then the line passes through the point (5,0)

and according to the picture ,only in graphs A and C the line C passes through (0,5) and (5,0).

conclusion:

both graph A and C represent correctly show Lines s and t and the point P

Remark : if you look closely to the graphs A and C ,they are the same thing.

Choose option ABC or D for questions 22 to 23
Will makr as brainleist
HUrry or ELSE
jk
take yo time

Answers

Answer:22 a

23 c

Step-by-step explanation:

:)

PLZ HELP ME FIGURE THIS OUT

Answers

3m = 15-9
3m = 6
m = 2

Answer:

Hope it helps you... plz mark as brainliest if it help you

FOR EASY BRAINLIEST BRAINLIEST!! Do 1. 2. And 3. With explanation

Answers

1. (-2, 14)

Simply plug in the points

2.k=8

Plug in -1 as X and solve for y
This gives the k value as well

3. y=-5x + 12

Use the point slope formula
Y2-Y1= m(x2-x1) + b

Answer:

1.)  Ans  -2 , 14

2.) Ans 2 1/5

3.) Ans y= mx+c

Step-by-step explanation:

first one you use Y = Mx +c

You see the Mx is a multiplication

and you input.

M * x = -5 x 2

M* x = -5 x -1

M* x = -5 x 3

M* x = -5 x -2

and note the answers will be less 4 as the equation states +4 is the y intercept and balances the equation.

So answers of the above in same order are;

-10

5

-15

10

we add 4

-6

9

-11

14

and see that 14 is the correct answer for y.

So the correct coordinates are -2, 14

Question 2) coordinates -1 k can equal = -5x+3

First we write as a division we know the gradient is -5

-we eliminate x

5x-1 / k+3  

= 4x/k+3

M = -5

= 4x = -5(k+3)

= 4x = -5k +15

= 4x -15 =-5k

= -11 =-5k

= 11/-5 = k

k = 2 1/5

3) Ans The equation of a line is y=(input the number whatever times the x to make the number before you add)

y = m

3) Ans then you place x next to it

3) Ans then you place + 4 or whatever adds to the number.

So the equation of the line is what makes y its value through m the gradient being the number you times with x and the difference of that total to make y intercept.

Find y intercept and you have c of  Mx+c

yeeaaah ummm I lied

Answers

Answer:

36.7⁰

Step-by-step explanation:

As the triangle is right angled :

tan of the angle = 24/32

tan of angle = 3/4

angle = 36.9⁰

Answer:

36.9

Step-by-step explanation:

→You use tan since it gives you the opposite and adjacent sides. However, since you're also trying to find the angle measurement, you use the inverse of tan: [tex]tan^-1[/tex]

[tex]tan^-1\frac{24}{32}=?[/tex]

36.86

→Round to the nearest tenth:

36.9

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