Equations
6) 2x + 3y = -1
3x + 4y = -4

Answers

Answer 1

Answer:

x = -8

y = 5

Step-by-step explanation:

2x = -3y-1

x = (-3y-1)/2

3x + 4y = -4

3[(-3y-1)/2]+4y = -4

(-9y-3/2)+4y = -4 (x2 all)

-9y-3+8y = -8

-9y+8y = -8+3

-y = -5

y = 5

3x+4.5 = -4

3x+20 = -4

3x = -24

x = -8

checking:

2.(-8)+3.5 = -1

-16+15 = -1 (checked)


Related Questions

N(x) will give you an output for any number you use as an input except which of the following?

Answers

n(x) will give output for any number except 0.

define equation

An equation consists of two sides, the left-hand side and the right-hand side, which are separated by an equals sign (=). The left-hand side and the right-hand side each contain one or more variables, which are quantities that can vary or be assigned different values.

Given

n(x)=2/x

From the given option, 3 and5  will satisfy the equation.

n(x)=2/3 for the value of x=3

n(x)=2/5 for the value of  x=5

For the value of x=0

O will not satisfy.

n(x)=2/0=not defined

Hence, n(x) will give output for any number except 0.

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What’s the solution of x+y=29 and y=4x-11

Answers

Answer:

x = 8

y = 21

Step-by-step explanation:

y = 4x − 11

x + y = 29

Solve for x:

x + y = 29

x + 4x − 11 = 29

5x − 11 = 29

5x = 40

x = 8

Solve for y:

y = 4x − 11

y = 4 × 8 − 11

y = 21

Plz help i really need the answer for this question: If I bought a pair of shoes that were on sale for $49.95 from $79.95, what was my coupon percentage? What would the total price be with tax of 8.75%?

Answers

With the tax it would be :50.03
And the percentage would be :60%

The Vanderbloom family already traveled 200 miles on their vacation. The total distance that they will travel (d) is a function of their rate of travel (r) and their upcoming travel time (t).

Answers

Answer:

See explanation

Step-by-step explanation:

The question is incomplete. However, I'll ask and answer possible questions that emanate from the given parameter.

A possible question is: Write the given information as a function of distance.

We have that;

[tex]Base\ Distance = 200[/tex]

[tex]Time = t[/tex]

[tex]Rate = r[/tex]

The function would be calculated as:

Base Distance + Rate * Time

Substitute values for Base Distance, Rate and Time

This gives:

[tex]200 + r * t[/tex]

[tex]200 + rt[/tex]

Hence;

[tex]Distance = 200 + rt[/tex]

Another possible question is to determine the current distance travelled by the family at a rate of 80 miles per hour for 3 hours.

Here, we have:

[tex]r = 80[/tex]

[tex]t = 3[/tex]

Substitute these values in [tex]Function = 200 + rt[/tex]

[tex]Distance = 200 + 80 * 3[/tex]

[tex]Distance = 200 + 240[/tex]

[tex]Distance = 440[/tex]

Bill went to visit his cousin Dana for six weeks.
How many days was he there?

Answers

Answer:

If you do 7 x 6 you get 42

Step-by-step explanation:

Bill was in his cousin's house for 42 days

What is week?

A week is a time unit equal to seven days

Bill went to visit his cousin Dana for six weeks

1 week = 7 days

6 week =7×6=42 days

Hence, Bill was in his cousin's house for 42 days

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10) Joe took a taxi from his home to the airport. The taxi driver charged an initial fee of $8 plus
$4 per mile. The total fare was $48, not including tip. How many miles did Joe travel by taxi on
this ride?

Answers

10 miles I believe

I hope this helps :)


Help me please, I’ll give brainliest, pls say how u got the answer but quickly

Answers

Answer:

A) y = -1/2x + 2

Step-by-step explanation:

The line is negative, so you will have a negative slope

The line is crossing the y- axis at 2 so the y- intercept is 2.

Now do rise over run or rise/run

The lines rise is 2 and the run is 4

2/4 = 1/2 and since the line is negative the slope is negative -1/2

y = -1/2x + 2

Hope this helps ya!!

Eloise bought 3 boxes of crackers to share with her friends over the weekend. They ate 1/2 box of crackers on Saturday and 2/3 box of crackers on Sunday.

How many boxes of crackers were left over?

1 3/5 boxes
1 5/6 boxes
2 3/5 boxes
2 5/6 boxes

Answers

Answer:

C.) 1 5/b boxes

Number of boxes left over

= 3 - 1/2 - 2/3

Convert each  fraction to one in terms of the LCM:

= 18/6 - 3/6 - 4/6

= 11/6

= 1 5/6 boxes.

The solution is Option B.

The number of boxes of crackers left with Eloise is 1 5/6 boxes of crackers

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the number of boxes of crackers left with Eloise be = A

Now , the total number of boxes of crackers be = 3 boxes

The number of boxes of crackers ate on Saturday = 1/2

The number of boxes of crackers ate on Sunday = 2/3

So , the equation will be

Number of boxes of crackers left with Eloise A =  total number of boxes of crackers - number of boxes of crackers ate on Saturday - number of boxes of crackers ate on Sunday

Substituting the values in the equation , we get

Number of boxes of crackers left with Eloise A = 3 - 1/2 - 1/3

On simplifying the equation , we get

Number of boxes of crackers left with Eloise A = 5/2 - 2/3

Number of boxes of crackers left with Eloise A = ( 15 - 4 ) / 6

Number of boxes of crackers left with Eloise A = 11/6

Number of boxes of crackers left with Eloise A = 1 5/6 boxes

Therefore , the value of A is 1 5/6 boxes

Hence , the number of boxes left is 1 5/6 boxes of crackers

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Emma earns $2 less than three times as much as Rachel. Nick earns twice as much as Emma. Together they earn $594 per week. How much does each person earn per week? ​

Answers

Answer:

290$

Step-by-step explanation:

Answer:

Mei earn $2 less than three times as much as Olivia. Shane earns twice as much as mei. Together they earn $594 per week. How much does each person earn per week?

***

Step-by-step explanation:

let x=amt Olivia earns

3x-2=amt Mei earns ($2 less than three times as much as Olivia).

2(3x-2)=amt Shane earns (twice as much as mei)

..

x+3x-2+2(3x-2)=594

x+3x-2+6x-4=594

10x=600

x=60

3x-2=178

2(3x-2)=356

amt Olivia earns=$60

amt Mei earns=$178

amt Shane earns=$356

Marie can find the volume of a cube by using the formula V = s³, where s represents the side length of the cube. If Marie's cube has a side length of 2 1/2 centimeters, what is the volume of her cube?

Answers

Answer:

15.625 cm^3

Step-by-step explanation:

[tex]V=2.5^{3} \\V=2.5*2.5*2.5\\V=6.25*2.5\\V=15.625 cm^{3}[/tex]

Which lines are perpendicular?
A) A and B
B) A and C
C) B and C
D) A and D

Answers

Answer:

B) A and C

Step-by-step explanation:

A and C are negative reciprocals of each other.

B) A and C
Because I had the same question and got it right

If Robin typed 15 characters in 5 seconds, 30 characters in 10 seconds, and
45 characters in 15 seconds, how many characters do you think she would
type in 20 seconds?

A. 50
B. 35
C. 90
D. 60

Answers

Answer:

robin would type D 60 characters in 20 seconds

A cell phone is on sale for $205 after a 20% off discount. What was the original price of the phone?

Answers

Answer:

256.25

Step-by-step explanation:

if you have a 20% discount then you are paying 80% if the original cost.

so 80% of the original price is 205

.80x = 205

x = 205/.80

Help!!!!!!!!!! Thanks

Answers

Answer:

[tex]m=-1[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Slope Formula (Rate of Change): [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (-4, 0)

Point (-3, -1)

Step 2: Find slope m

Substitute:                     [tex]m=\frac{-1-0}{-3+4}[/tex]Subtract/Add:                [tex]m=\frac{-1}{1}[/tex]Divide:                           [tex]m=-1[/tex]

What is the slope of the line represented by 9x - 14y = 28?

Answers

Answer:

The slope of the line is [tex]\displaystyle \frac{9}{14}[/tex].

Step-by-step explanation:

We are given the line in standard form:

[tex]9x - 14y = 28[/tex]

We need to get this into slope-intercept form in order to determine the slope of the line.

Slope-intercept form is [tex]y = mx + b[/tex], where m is our slope and b is the y-intercept.

Therefore, we need to get:

[tex]9x - 14y = 28[/tex]

converted to:

[tex]y = mx +b[/tex].

[tex]\displaystyle 9x - 14y = 28\\\\-14y = -9x + 28\\\\\frac{-14y}{-14}=\frac{-9x+28}{-14}\\\\y = \frac{9}{14}x-2[/tex]

Therefore, by solving the equation in slope-intercept form, we see that m equals 9/14, so our slope is [tex]\displaystyle \frac{9}{14}[/tex].

Plz help getting timed

Answers

Answer:

8

Step-by-step explanation:

The answer is 14.
7+7= 14
14/7 = 2
7•2=14

PLZ PLZ HELP 25 POINTS AM DESPERATE WILL GIVE BRAINLY
WHAT IS 2 + 2???

Answers

The correct answer is 21 I’m playing it’s 4!!!!!!!

Business Loss A company loses $120 as a result of a shipping delay. The 8 owners of the
company must share the loss equally. Write an expression for the earnings per person. Evaluate
the expression.

Answers

$15 per person, i hope you have a good day :)

The scale on Todd's map is 1 inch = 200 miles. The distance
from his house to his Grandma's house on the map is 5 1/4 inches.
What is the distance in miles from Todd's house to his Grandma's
house?

Answers

Answer:

1,050 miles

Step-by-step explanation:

First: Convert any mixed numbers to fractions.

Then your initial equation becomes: Applying the fractions formula for multiplication,

2/14×200/1

Applying the fractions formula for multiplication,

21×200

 4×1

=42004

Simplify

1,050

I need the answers please

Answers

Answer:

-3,4,-4

Step-by-step explanation:

Answer:

(-3,7)

Step-by-step explanation:

which expressions are equivualent

Answers

Answer:

A (1\(3^4))

Step-by-step explanation:

3^-8\3^-4 = 3^4\3^8 =1\3^4

An item is regularly priced at $81. It is on sale for 45% off the regular price. Find the sale price.

Answers

Answer:

44.55

Step-by-step explanation:

Internet said this: "Thus, a product that normally costs $ 81 with a 45 percent discount will cost you $ 44.55, and you saved $ 36.45. You can also calculate how much you save by simply moving the period in 45.00 percent two spaces to the left, and then multiply the result by $ 81 as follows: $ 81 x. 45 = $ 36.45 savings."

Hope this helps∞<3

Let me know if it right or wrong!

Answer: $44.55

Step-by-step explanation:

$81*.45=36.46

$81-$36.45= $44.55

what are the numbers of the symbol π

Answers

Answer:

i assume that is pi

Step-by-step explanation:

3.14159 is the first didgits, but a lot of my teachers  just like to round it to 3.14

hope this helps :)

The first few digits are 3.14159. The symbol is called pi if you didn't know.

x + y = 8
x - y = 2
If (x, y) is the solution to the given system of equations, what is the value of y?

A.)10
B.)6
C.)5
D.)3

Answers

It would be 3 I believe

HELP QUICK PLEASE. POSSIBLY GIVING BRAINLIEST TO CORRECT ANSWER.

Line p passes through (8, -6) and is perpendicular to the line 2x + y = -7.
The slope of line p is _____.
a. -2
b. -1/2
c. 1/2
d. 2

the answer is NOT d.

Answers

Answer: It is b

Step-by-step explanation: hope this helps :)

the tens digit of a two digit number is twice the units digit. the sum of the number and its unit digit is 66 find the number​

Answers

Given that :

The tens digit of two digit number is twice the units digit.And there sum is 66.

To find :

The number.

Solution :

•Let us take the units digit be x

•Then the tens digit will be 2x [As it is given that the tens digit is two times the units digit]

A/Q

↪2x + x = 66

↪3x = 66

↪x = 66/3

↪x = 22

Therefore,the units digit is 22

And the tens digit is 2x = 2 × 22 = 44

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Quadrilateral JKLM is a kite as such KM is a perpendicular bisector of J L at point P given that KP =4" JL equals 12" and AML equals 20" was the length of the permenter of the quad JKlM?

Answers

Answer:

40 + 4√13

Step-by-step explanation:

A kite is a quadrilateral (has four sides) with two pairs of equal adjacent sides. The longer diagonal of a kite bisects the shorter diagonal.

Since in kite JKLM, diagonal KM bisects JL, hence KM is the longer diagonal.

JP = LP

JL = 12

JL = JP + LP

12 = JP + LP

2JP = 12 (LP = JP)

JP = 6

We can find JK using Pythagoras theorem, hence:

JK² = JP² + KP²

JK² = 4² + 6²

JK² = 16 + 36

JK² = 52

JK = √52 = 2√13

JK = KL = 2√13

ML = JM = 20

Perimeter of kite = JK + KL + ML + JM = 20 + 20 + 2√13 + 2√13

Perimeter of kite = 40 + 4√13

Need help on this question if right they will get brainiest

Answers

Answer:

well if the area dimensions are correct it will be 7040 sq ft according to what is above the question, but what i see it doesn't give you anything to go off of

Step-by-step explanation:

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Basketball court area in meters scale :

[tex]15 \times 28 = 420 \: \: {m}^{2} [/tex]

_________________________________

Basketball court area in foot scale :

[tex]50 \times 94 = 4700 \: \: {ft}^{2} [/tex]

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Help!! Please!! ASAP!!!
A model car is 12 inches
long. Using a scale of
3inches : 4 feet, how long
is the actual car?
A. 1 foot
B. 9 feet
C. 16 feet

Answers

Answer: C

Step-by-step explanation: If a car is 12 inches a room could possibly be 16 feet and a room and a car might or if not might have the same width

I hoped i helped :)

Answer:   C) 16 feet

=======================================================

Work Shown:

3 inches on paper = 4 feet in real life

Multiply both sides by 4 so that the "3 inches on paper" turns into "12 inches on paper"

We get

4*(3 inches on paper) = 4*(4 feet in real life)

12 inches inches on paper = 16 feet in real life

This leads to the answer C) 16 feet.

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

Alternative Method:

(3 in on paper)/(4 ft in real life) = (12 in on paper)/(x ft in real life)

3/4 = 12/x

3*x = 4*12 ... cross multiply

3x = 48

x = 48/3 .... dividing both sides by 16

x = 16

The car's length is 16 feet in real life.

Find the value of x so that the function has the given value.
p(x) = 6x - 12; p(x) = 18​

Answers

k(x) = 6x - 12

k(x) = 18

substitute:

6x - 12 = 18     |+12

6x = 30    |:6

x = 5

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