A system of equations is shown.

x−y=−8
x+y=4
Which is a method that can be used to eliminate a variable? Select all that apply.

a)Add the terms in the bottom equation to the terms in the top equation to eliminate y

b)Multiply the terms in the bottom equation by 2 and add the resulting terms in the top equation to the terms in the top equation to eliminate x

c)Subtract the terms in the top equation from the terms in the bottom equation to eliminate x

d)Multiply the terms in the bottom equation by 4 and subtract the resulting terms in the bottom equation from the terms in the top equation to eliminate y

Answers

Answer 1

Answer:

a)Add the terms in the bottom equation to the terms in the top equation to eliminate y


Related Questions

I need help with letter B, thanks

Answers

Answer:

58

Step-by-step explanation:

6*8+2*2+3*2=58

Answer:

b) 58

Step-by-step explanation:

b)

Formula for all of them:

A = bh

Big rectangle:

A = bh

A = (8)(6)

A = 48

Right rectangle:

A = bh

A = (2)(3)

A = 6

Bottom rectangle:

A = bh

A = (2)(2)

A = 4

Combined:

48 + 6 + 4

58

60+(55-45)+9 find the total

Answers

The answer is 79
I hope this helped
Use PEMDAS

In 2016 the U.S. Census Bureau estimated the population of the United States at 322 million. If the annual rate of growth was about 0.81%, find the expected population at the time of the 2030 census. Round your answer to the nearest ten million.

Answers

Answer:

388,000,000

Step-by-step explanation:

So as we have 322 million

we want to take 0.81% of it and add to the total each year so

322,000,000*0.81%=2,608,200

322,000,000+2,608,200=324,608,200

and now do that for 22 more years so

We get 387,649,305.98 as our population

387,649,305.98 -------> 388,000,000

Can someone PLEASE help me with this problem?

Answers

Answer:

3/5 of a foot

Step-by-step explanation:

1/5+2/5=3/5

Rewrite the function to complete the square f(x) = x^2 + 4x + 41

Answers

Answer:

f(x)=(x+2)^2+37

Step-by-step explanation:

Got it right on Khan :)

The quadratic function f(x) = x² + 4x + 41 is converted into square form is f(x) = (x + 2)² + 37.

What is a quadratic equation?

The quadratic equation is given as ax² + bx + c = 0. Then the degree of the equation will be 2.

The quadratic function is given below.

f(x) = x² + 4x + 41.

The quadratic function is converted into square form by adding and subtracting the square of the half of the coefficient of x.

f(x) = x² + 4x + 41

Transform into square form. Then the quadratic function will be

f(x) = (x² + 4x + 4) + 41 – 4

f(x) = (x + 2)² + 37

The quadratic function f(x) = x² + 4x + 41 is converted into square form is f(x) = (x + 2)² + 37.

More about the quadratic equation link is given below.

https://brainly.com/question/2263981

#SPJ2


There are 12 donuts in a dozen. You are allowed to eat 2. How many different combinations of donuts could
you eat?

Answers

Answer:

Step-by-step explanation:

Write the number two and a half million in figures?

Answers

Answer:

2,500,000

Step-by-step explanation:

here's the answer

have a great day or night

2,500,000 is two and a half million

Which inequality is NOT true when x = -2?

Answers

Answer:

Step-by-step explanation:

x > -2

x < -2

1. A 42 inch television is 40.6 inches wide. Using the diagram below, determine the
height of the
television. Round your solution to the nearest hundredth.
42 in.
40.6 in.

Answers

Answer:

184.85 square mm

Step-by-step explanation:

The area of a sector of a circle is , where r is the radius and  is the angle in radians subtended by the arc at the centre of the circle.

Since, diameter = 40.6 mm

So, radius(r)=20.3 mm and  = radians

So, area of sector=

=

Step-by-step explanation:

PLEASE HELP ASAP WILL MARK BRANLIEST

did i get the right answer or is it wrong?

Answers

Answer:

62.2

Step-by-step explanation:

4n × 2 + 43

[By putting the value of n = 2.4]

= (4 ×2.4) × 2 + 43

= 9.6 × 2 + 43

= 19.2 + 43

= 62.2 (Ans)

Answer:

4(2.4) x 2 + 43

= 9.6 x 2 + 43

= 19.2 + 43

= 62.2

Step-by-step explanation:

You got it wrong it is 62.2

Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!

Answers

Answer:

OQ=33

Step-by-step explanation:

identify all the numbered angles that are congruent to the given angle.​

Answers

Answer:

1, 4, and 7

Step-by-step explanation:

1, 7, 4

Opposite angles are congruent

Write the number below as a fraction in its simplest form 0.˙49˙9 (more clearer picture is attached here)

Answers

Answer:

499/999

Step-by-step explanation:

The decimal number written is:

0.499...

Such that these 3 decimals are repeated as:

0.499499499...

Let's define this number as k

k = 0.499...

Let's multiply this number by 1000 (the same number of zeros as important decimals after the decimal point)

we get:

1000*k = (1000)*(0.499...) = 499.499...

Now we can subtract the original number k, so we get:

1000*k - k = 499.499... - 0.499...

In this way, we remove the part after the decimal point:

1000*k - k = 499.499... - 0.499...

(1000 - 1)*k = 499

999*k = 499

Now we can divide both sides by 999

(999*k)/999 = 499/999

k = 499/999

The fraction notation of our number is 499/999 (and this is the simplest form)

legs and hypotenuse ​

Answers

Answer:

Step-by-step explanation:

For a right triangle, the side that is opposite of the right angle is called the hypotenuse. This side will always be the longest side of the right triangle. The other two (shorter) sides are called legs.

Given the Trapezoid ABCD

Find the length of AD

Pls helppp

Answers

Answer:

AD = 230

Step-by-step explanation:

AD = 30x - 10

MN = 31x + 1

BC = 30x + 28

To find the length of AD, we need to generate an equation that will enable us to find the value of x.

Thus,

MN = ½(AD + BC) => Trapezoid Midsegment Theorem

Plug in the values

31x + 1 = ½(30x - 10 + 30x + 28)

(31x + 1) × 2 = 30x - 10 + 30x + 28

62x + 2 = 30x - 10 + 30x + 28

Add like terms

62x + 2 = 60x + 18

62x - 60x = -2 + 18

2x = 16

x = 16/2

x = 8

✅AD = 30x - 10

Plug in the value of x

AD = 30(8) - 10 = 230

Answer problem fast pls

Answers

Answer:

m<A: 62

m<B: 54

Step-by-step explanation:

180 - 116 = 64

3x - 13 + 2x + 4 + 64 = 180

5x + 55 = 180

5x = 180 - 55

5x = 125

x = 25

m<A:

3x - 13

3(25) - 13

62

m<B:

2x + 4

2(25) + 4

54

The length of a rectangular pool is
L yards, and it's width is 4 yards
shorter than it's length. Write an
expression for perimeter of that
pool.

Answers

Answer:

4L-8

Step-by-step explanation:

Formula: L+L+(L-4)+(L-4)

=L+L+L-4+L-4

=4L-8 (hope this explains you the problem)

Two bottles of soft drink can be serve 8 people.How many bottles of soft drink will be be needed to serve 40

Answers

Answer: 10 bottles

Step-by-step explanation: 8 x 5 = 40. 2 x 5 = 10

Find the distance between the points A(2, 3) and B(4, 1).​

Answers

Answer:

sqrt(8) or 2.828

Step-by-step explanation:

You use the distance formula which is sqrt((x2-x1)^2+(y2-y1)^2) where x2 can be either x value

Answer:

sqrt(8) units

Step-by-step explanation:

Use the formula d=sqrt((x2-x1)^2 + (y2-y1)^2). d=distance, and (x1, y1) and (x2, y2) are the points.

d=sqrt((4-2)^2 + (1-3)^2)

 =sqrt(2^2 + (-2)^2)

 =sqrt(4+4)

 =sqrt(8)

A and B are sqrt(8) units apart.

Please help my on maths

Answers

First one:
Supplementary = 180
Add the angles together to get 180
10x + 36 + 6x = 180
16x = 144, x = 9
Plug 9 into equation of angle RAS
10(9) + 36 = 126
Angle RAS = 126 degrees

Second question:
Exterior angle = sun of two opposite interior angles
54 degrees + 90 degrees = 144

Solution: the exterior angle is 144 degrees

Answer:

1) m<RAS = 126

2) x = 144

Step-by-step explanation:

1)

10x + 36 + 6x = 180

16x + 36 = 180

16x = 144

x = 9

<RAS:

10x + 36

10(9) + 36 = 126

2)

54 + 90 + y = 180

y + 144 = 180

y = 36

x + y = 180

x + 36 = 180

x = 144

Find the radius of the sphere with the given volume. (15 points)
Please show your work!

Answers

Answer:

r = 1/2

Step-by-step explanation:

sphere volume = 4/3πr³

4/3πr³ = 1/6π

divide both sides of the equation by π:

4/3r³ = 1/6

multiply both sides by 6:

24/3r³ = 1

reduce:

8r³ = 1

divide both sides by 8:

r³ = 1/8

r = 1/2

A little help thank u have a nice day :)

Answers

Center:
(−4,0)

Radius: 5

Which cannot be represented by a linear
function?
A. the area of a square, given its side length
B. the price of fruit, given the weight of the fruit
C. the number of steps on a ladder, given the
height
D. the number of inches, given the number of

Answers

The number of inches, given the number of

Which value is the log being taken of in the equation: log4 (x − 5) = 3?

Answers

Answer:

Step-by-step explanation:

I don't get what you're talking about but imma just do the log of each number

4=.602

5=.699

3=.4771

Find the circumference of the circle.
A circle has diameter 9 centimeters.
9

Answers

Answer:

2.86478897565  or   3 (if rounded to the nearest whole number)

Step-by-step explanation:

How we find circumference by using diameter is divide the diameter by pi

SO 9 divide by pi equals 2.86478897565 or 3 (if rounded to the nearest whole number)

Can u mark me as brainlist? :)

HAVE A GREAT DAY!

The measure of the angles of a triangle are shown in the figure below solve for X

Answers

Answer:

7=x

Step-by-step explanation:

A restaurant has many vistors over the weekend.4/9 of the visitors are adults. If there were 380 adults, how many visitors were children? Answer

Answers

Answer:

475 children

Step-by-step explanation:

A restaurant has many vistors over the weekend.4/9 of the visitors are adults. If there were 380 adults, how many visitors were children? Answer

Step 1

We find the total number of visitors the restaurant had over the weekend. This is calculated as:

Let the total number of visitors = x

4/9 × Total number of visitors = 380 Adults

4/9 × x = 380

4x/9 = 380

Cross Multiply

4x = 9 × 380

x = 9 × 380/4

x = 855 visitors.

Step 2

The number of visitors that were children is calculated as:

Total number of visitors - Number of Adults

= 855 visitors - 380 Adults

= 475 children

When converting the equation of a line
into Standard Form, which of the
following is an important "rule" to
remember?
Ax + By = C

Answers

Answer:

Step-by-step explanation:

In the standard form Ax + By = C, the A can only be any positive integer and B and C can be any integer.

Please help

Find the equation of a line, in slope-intercept form of a line that passes through the point (-5, -1) and is parallel to the line -2x + 4y = 8.

1. y = -1/2x +13/2
2. y = 1/2x - 3/2
3. y = -1/2x - 7/2
4. y = 1/2x + 3/2

Answers

Answer:

4. y = 1/2x + 3/2

Step-by-step explanation:

First, we need to change the line that's parallel into slope-intercept form.

-2x + 4y = 8

4y = 2x + 8

y = 1/2x + 2

If it's parallel, then it remains the same. So our slope is 1/2.

To find the y-intercept, you need to plug the coordinates into the equation.

y = 1/2x + b

-1 = 1/2(-5) + b

-1 = -5/2 + b

3/2 = b

y = 1/2x + 3/2

Could someone help me out with this

Answers

Hey! It's me again! You told me to answer this, so I will deliver ☺

Answer:

15/21

Step-by-step Explanation:

Because 1/3 and 2/7 do not have the same denominator, we will have to multiply them to get one that they'll both share.

In this case, you multiply both denominators, 3 and 7, to get 21.

We do the same with the numerators, but in a different way.

We're gonna multiply the numerators by the OTHER fractions' denominators this time. So, we do this:

1 x 7 = 7

2 x 3 = 6

We end up getting these fractions:

7/21

6/21

And now, we just subtract 6 from 21, to get 15.

And you get 15/21.

I hope I helped you, and a "Brainliest" is always appreciated! ☺

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