Solve the system of equations by the substitution method.

x−2y=−4 x+8y=16

Answers

Answer 1

Answer:

x=0, y=2

Step-by-step explanation:

x-2y=-4

-x+8y=16

   -10y=-20

    y=2

x-2y=-4

x-2(2)=-4

x-4=-4

x=-4+4

x=0


Related Questions

if Ax and 60b 30c find its unknown sizes of angle ​

Answers

Step-by-step explanation:

3360832553 pass wZE2XQ

Predict the missing component of each reaction.

MgO + ? → Mg(OH)2

2MgO → ?

A. 2Mg + H2O

B. 2Mg + O2

C. MgOH + O2

D. MgO + O2

Answers

Answer:

In the first equation, it's H20 but the second is B

2Mg + 2O2

here are the answers for both questions on this slide as of edge 2021, the 2nd is the one asked here.

1. 2KClO3 → 2KCl + ?

2Na + Cl2 → ?

A.) 2NaCl

2. MgO + ? → Mg(OH)2

2MgO → ?

B.) 2Mg + O2

what the frige please help​

Answers

Answer:

Your answer is A, 3x - 2x.

Step-by-step explanation:

Triple a number means to multiply it by 3.

Double a number means to multiply it by 2.

Difference means to subtract.

Hope this helps!

Answer:cim not sure tho

Step-by-step explanation:

For each Given function value, write a corresponding ordered pair

f(3)=6

g(0)=-1/2

Please Explain

Answers

Answer:

(3, 6)

(0, -1/2)

Step-by-step explanation:

in a function like f(x)

The f() represents the function and the x represents the x value you plug into the function. f(x) is the same as the y value, it is just used to show what the y value would be at a certain x value for that function

_____

f(3) = 6 means when the function f is at x = 3, the function, f = 6.

so it would be (3, 6)

g(0) = -1/2 means the function g is at x = 0, the function, f = -1/2.

so it would be (0, -1/2)

Here is a list of numbers:
8.4, 8.6, 7, 7.6, 2.4, 9.7, 5.8, 5.2, 3.3
State the median.

Answers

Answer:

7

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

arrange the numbers in the other of magnitude

:

2.4,3.3,5.2,5.8,7,7.6,8.4,8.6,9.7

then check for the middle number(s)

median = 7

Need help ASAP

16. What is f(-1)

Answers

Answer:

y = 0

Step-by-step explanation:

READ THE GRAPH. If X = 1, then Y = 0. have a nice day

Answer:

f(- 1) = 3

Step-by-step explanation:

locate x = - 1 on the x- axis, go vertically up to meet the graph at (- 1, 3 ) , so

when x = - 1, then y = 3 , that is

f(- 1) = 3

Evaluate x(y+3)/(3+y)z for x = 2, y = 5, and z = 1.


4


3


2


1

Answers

Answer:

2

Step-by-step explanation:

hope this helps

The answer is 2 cause that’s what photo math said. You’re welcome

what is the value of x in the equation -2/9x = 2/5?

a. -1 4/5
b. -5/9
c. 5/9
d. 1 4/5​

Answers

Is the letter B, I hope I help you.

Which point is the vertex?
C
B
A
None of the above

Answers

The answer is B because its where the two lines intersect or cross each other

Express each number in scientific notation.
a) 1 300 000 c) 882 500 000
b) 12 500 d) 51 670 000

Answers

Answer:

1.3 x 10^6

8.825 x 10^8

1.25 x 10^4

5.167 x 10^7

Step-by-step explanation:

Find the EQUATION of the line through (-10,-12) and (-15,3). Use the form y=mx+b.​

Answers

Y=Mx+b

Y=-3x-42

Please mark brainliest. Thank you

6. What might be the opportunity cost of a large portion of your income going toward credit
card payments each month?

Answers

You might miss out on things you would want to buy .

Can the sides of a triangle have lengths 3, 3, and 9?​

Answers

Answer:

No, the sum of the lengths of ANY 2 sides must be greater than the lengths of this 3rd side.

Step-by-step explanation:

Hello everyone!
[tex] \huge \tt\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }[/tex]
Can someone try to do this question using the derivative rule for quotient? No spam please!​

Answers

Hello Carousel!

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

[tex] \huge \tt\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }[/tex]

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex]\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) } \\ [/tex]

To start solving this question, note that ⇨ for any 2 differentiable functions, the derivative of the quotient of the 2 functions will be the denominator multiplied by the derivative of the numerator minus the numerator again multiplied by the derivative of the denominator whole divided by the denominator². By doing all these steps, we'll get it as..

[tex]\frac{\left(x^{1}-5\right)\frac{\mathrm{d}}{\mathrm{d}x}(3x^{2}-2)-\left(3x^{2}-2\right)\frac{\mathrm{d}}{\mathrm{d}x}(x^{1}-5)}{\left(x^{1}-5\right)^{2}} \\ [/tex]

Remember that the derivative of the polynomial will be the sum of the derivatives of its terms. We know that, the derivative of a constant term is 0 & the derivative of [tex]ax^{n}[/tex] is [tex]nax^{n-1}[/tex]. So..

[tex]\frac{\left(x^{1}-5\right)\times 2\times 3x^{2-1}-\left(3x^{2}-2\right)x^{1-1}}{\left(x^{1}-5\right)^{2}} \\ [/tex]

Now, simplify it..

[tex]\frac{\left(x^{1}-5\right)\times 2\times 3x^{2-1}-\left(3x^{2}-2\right)x^{1-1}}{\left(x^{1}-5\right)^{2}} \\ = \frac{\left(x^{1}-5\right)\times 6x^{1}-\left(3x^{2}-2\right)x^{0}}{\left(x^{1}-5\right)^{2}} \\ = \frac{x^{1}\times 6x^{1}-5\times 6x^{1}-\left(3x^{2}x^{0}-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{6x^{1+1}-5\times 6x^{1}-\left(3x^{2}-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{6x^{2}-30x^{1}-\left(3x^{2}-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{6x^{2}-30x^{1}-3x^{2}-\left(-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{\left(6-3\right)x^{2}-30x^{1}-\left(-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{3x^{2}-30x^{1}-\left(-2x^{0}\right)}{\left(x^{1}-5\right)^{2}} \\ = \frac{3x^{2}-30x-\left(-2\right)}{\left(x-5\right)^{2}} \\ = \large \boxed{\boxed{ \bf \frac{3x^{2}-30x + 2}{\left(x-5\right)^{2}} }}[/tex]

You can further simplify the answer to [tex]\underline{\underline{\frac{146}{\left(x-5\right)^{3}}}}\\[/tex]

__________________

Hope it'll help you!

ℓu¢αzz ッ

120−96×[5 ÷ {23 − 3 × (12 − 22 − 16)}]

Answers

Answer:

115.248

Step-by-step explanation:

120−96×[5 ÷ {23 − 3 × (12 − 22 − 16)}]

120−96×[5 ÷ {23 − 3 × (-26)}]

120−96×[5 ÷ {101}]

120−96×[0.0495]

115.248

Just remember PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction

What is the slope-intercept equation
for the following line?

Answers

Answer:

y = - x + 1

Step-by-step explanation:

Slope = 2/-2 = -1

y-intercept: 1

y = -x + 1

Answer:

y = -x + 1

Step-by-step explanation:

Given the points (2, -1) and (0, 1):

Let (x1, y1) = (2, -1)

(x2, y2) = (0, 1)

Substitute these values into the slope formula:

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

m = [1 - (-1)] /(0 - 2)

m = (1 + 1)/ -2

m = 2/-2 = -1

Therefore, the slope, m = -1.

Next, the y-intercept is the y-coordinate of the point (0, b) where the graph of the linear equation crosses the y-axis. The y-intercept is also the value of y when x = 0.

The ordered pair, (0, 1) represents the y-intercept. Its y-coordinate is the value of b = 1.

Therefore, the linear equation of the graph in slope-intercept form is:

y = -x + 1

PLEASE HELP IT’S DUE TMR

Answers

Answer:

hope you find the answer

lee Hoskins: Attempt 1

A tennis racket with a price of $180 is subject to a sales tax of 7%. What is the total
price of the racket?
$192.60
$187

Answers

I think it is $192.60
7% of 180 is 12.60, then add 12.60 to 180 and you’ll get 192.60!!

he ratio of the interior angle measures of a triangle is 2:3:5. What are the angle measures?In order from the smallest angle to the largest angle, the angle measures are°,°, and°.

Answers

Answer:

Step-by-step explanation:

Ratio of angles = 2 : 3 :5

Angles are 2x , 3x , 5x

Sum of all angles of triangle = 180

2x +3x + 5x = 180

10x = 180

  x = 180/10

x = 18

2x = 2*18 = 36

3x = 3*18 = 54

5x = 5*18 = 90

Smallest to largest

36 , 54 , 90

Answer:

36°, 54°, and 90°

Step-by-step explanation:

The sum of interior angles of a triangle = 180

Remember: The sum of the interior angles = (number of sides - 2)(180)

2:3:5 means 2x:3x: 5x

2x + 3x + 5x = 180

10x = 180

x = 18

The angles are 2(18) = 36°

                          3(18) = 54°

                          518) = 90°

a = 1/3 (b+c)
make b the subject ​

Answers

Answer:

b= 3a-c

Step-by-step explanation:

Solve for b.

a= 1/3(b+c)

multiplying both sides by 3.

3a= b+c

subtract c from both sides.

3a-c=b

or

b= 3a-c

Answer:

b= 3a-c

Step-by-step explanation:

Solve for b.

a= 1/3(b+c)

Multiplying both sides by 3.

3a= b+c

Subtract c from both sides.

3a-c=b

or

b= 3a-c

A box has 200 socks, 20 are blue and the rest are red. A person draws socks at random from the box, hoping to find a pair of blue socks. (a) Suppose that m socks are taken without replacement. Let Y be the random variable that counts the number of blue socks in the sample of m. What is the pmf of Y

Answers

Ummm i don't know what the pmf would be but the probability of grabbing a blue sock would be 10 out of 100...

On the grid below draw a right triangle
with vertices at P(2, 4), Q(7, 9), and
R(10,6). what is the lengths of the three sides to the nearest tenth.

Answers

Answer: See attached image for graph

PQ: √50

QR: √18

PR: √68

Step-by-step explanation: We will use the 2D distance formula in order to get each side length. The distance formula is:

distance = √(x₂-x₁)² + (y₂-y₁)²

Thus, we just apply this formula for each side length.

WILL GIVE BRAINLIEST!!!



Distributive property quick check. Simplify: 1/2 (6z+10). Simplify: 10(5+2x). Simplify: 3(5y+6)-4. Simplify: (3a+2)(4).

Answers

Answer:

1: 3z+5

2: 50+20x

3: (15y+18)-4

4: 12a+8

How do i solve 2x=-3
i need answer ASAP​

Answers

Answer:

[tex]x = \frac{-3}{2} \\or \\x = -\frac{3}{2}\\or\\-1.5[/tex]

Step-by-step explanation:

2x = -3

divide 2 from both sides

[tex]x = \frac{-3}{2} \\\\or \\x = -\frac{3}{2}[/tex]

Answer:

x=-1.5

Step-by-step explanation:

1. Divide on both sides to get the x alone; -3 divided by 2 is -.15 or -3/2

The table shows the cost of some apples. Which function ƒ(x) is represented in the table?

A)

ƒ(x) = 2x + 2

B)

ƒ(x) = 0.5x

C)

ƒ(x) = 0.5x + 2

D)

ƒ(x) = 2x

Answers

Answer:

D) f(x) = 2x

Step-by-step explanation:

The ordered pairs from the table:

(1, 2), (2, 4), (3, 6)

Find the slope:

m = (4 - 2)/(2 - 1) = 2

Find the y- intercept:

2 = 2*1 + b ⇒ b = 0

The function is:

f(x) = 2x

Correct choice is D

Take any two pairs

(1,2)(3,6)

Slope

m=6-2/3-1m=4/2m=2

Equation in point slope form

y-2=2(x-1)y-2=2x-2y=2x

What even is this? Did my teacher have a typo?
56\pi +67i\leq +23

Answers

Answer: it's not a typo its a formula

hope this helps

brainliest?

Simplity using properties of exponents. Write your answer using a
single whole number exponent and the same base as given in the
expression below.

Answers

Simplifying Expressions Using the Properties of Exponents (Four Examples)Daniel Ozimek

6. Nathan buys packages of bacon. This chart shows the numbers of
packages and the total cost to ship.
Number of Packages Shipping Cost
()
1
$8
2
$16
3
$24
4
$32
Which statement is true?
A The data is proportional, and the unit rate is $8 per package.
B. The data is not proportional, and the unit rate is $8 per package.
C. The data is proportional, and the unit rate is 8 packages per dollar.
D. The data is not proportional, and the unit rate is 8 packages per
dollar.

Answers

Answer:

A  The data is proportional and the unit rate per package is $8   This is because y= 8x

Step-by-step explanation:

/y relationship is no of packages = 1                                                                          x/ = total cost to ship = 8    = 8/1  = 16/2 = 24/3 = 32/4 means they are all proportional to 8/1 = 8    y = 8x  see graph attached  

Fill in the blanks W Two numbers that when multiplied together gives 6 and when added together gives -7 are: and​

Answers

Answer:

-1 and -6.

Step-by-step explanation:

-1 and -6

-1*-6 = 6

-1 + (-6) = -1-6= -7.

1.235 X 10
HELP PLEASE

Answers

Answer:

12.35

Step-by-step explanation:

Answer:

12.35

Step-by-step explanation:

Other Questions
What are the main goals of the U.S. Constitution? Write the equation in point slope form PLZ THIS IS URGENT HELPWhich of the following genetic crosses follows the Mendelian inheritance?A) P generation: brown lab x black lab; F1 generation: yellow labB) P generation: A blood x B blood; F1 generation: AB bloodC) P generation: Red-eyed fly x Red-eyed fly; F1 generation: White- eyed flyD) P generation: Widows peak x straight hair-line; F1 generation: Widows-peak please answer by 10 pm lowest common factor between 7 and 11 What is difference between china and singapore? a.8.4 t=_______kgb. 10,000m=_______km c. 231g=______kgd. 6000kg=______e. .7kg=______tf.125 g=_______kg g. 3.9t=______kg h.2000g=_____kg i. .5kg=______tj. 3600g=_____kg The himalayan mountains were formed baecause of aa.convergent boundaryB.transform faultc.hot spotD.divergent boundary What muscle type is located in blood vessels? acardiac muscle bstriated muscle cskeletal muscle dsmooth muscle What is the distance between points B and C what is the reciprocal of 1 1/4 What element is in period 4 and is in group 18 Which 18th-century historical development led most directly to the creation ofthe Declaration of Independence?O A. The New England colonies gained the most power in Americancolonial politics.O B. American colonists began to demand a more representativegovernmentO C. British leaders demanded that American colonists participate inParliament.O D. The Southern colonies began to rely more heavily on African slavelabor. 17. What two headed muscle comes together with the soleus to attach to the heel? Write a summary of the video. 3 -5 sentences over Non-commutable diseases a. Identify the process that causes the pattern of rock data shown in the map.b. Explain how the pattern provides evidence for the process you identified in part (a). Ill give brainlest if right hey yall i need you guys to answer this ] At the amusement park there were t-shirts for sale for $18.95 each. James bought 4 of them. About how much did he spend?] P.S ur the best yall What is a small description of a molecule What does Newton's law all about?