2x + 5y = 20
6x - 5y = 12

Answers

Answer 1

Answer:

is this a question?

Step-by-step explanation:

Answer 2
If you’re asking to solve a system of equations, then x=4 and y= 12/5 or 2.4

First Solve 2x+5y=20 for x

Add -5y to each side
2x=5y-20

Divide both sides by 2
x= -5/2y +10

Next substitute -5/2y +10 for y in the equation 6x-5y=12

6(-5/2y+10) -5y=12
-20y+ 60= 12

Then simplify again by adding -60 to each side
-20y= -48

Then divide by -20 on each side

Y= 12/5 (or 2.4)

Now to find x substitute 12/5 for y in x= -5/2y+10

X= -5/2(12/5) +10

X= 4

So X=4 and Y= 12/5 or 2.4

Hope that helped








Related Questions

Find the area of the shaded region. (Blue is the shaded region) ​

Answers

Answer:

135ft^2

Step-by-step explanation:

area of trapzoid= (a+b)/(2)×h

area of traingle= 1/2(b)(h)

area of the shaded region equals (a+b)/(2)×h-1/2(b)(h)

so

(8+18)/(2)×15-(1/2)(8)(15)

=135ft^2

33 pounds of dog food for $45 how much is it per pound

Answers

Answer:

1 pound = .73 dollars rounded.

Step-by-step explanation:

This is like a rate question. Speed is in miles / hour only the units for this question is pound / dollar.

pounds = 33

dollars = 45

1 pound is 33/45

1 pound = 0.73

Multiply (-x^2 + 2x + 4) (x-3)

Answers

Answer:

−x^3+5x^2-2x−12

Step-by-step explanation:

x(-x*2+2x+4) -3(-x*2+2x+4)
-x*3+2x*2+4x+3x*2-6x-12
-x*3+5x*2-2x-12

Pls help NEED BY 9:07

30 POINTS

Answers

The answer is
a, Joseph got better gas mileage
Take gallon and
Divide by miles,

The equation cosx = square root 3/2 is an identity.
A. True
B. False

Answers

Answer:

false, because cos(x) has no definite answer, and equations aren't identities

Step-by-step explanation:

False because cosx has no definite answer

please huryyyyyyyyyyy!!!!!!!!!!!!!

Answers

Answer:

do you hvae more imformation

Step-by-step explanation:

What is the length of AD (square)

Answers

Answer:

5

ALL SIDES MUST BE THE SAME

Answer:

5 cm

Step-by-step explanation:

The record low temperature in Fargo, ND is -37°F. The record high is 109°F. What is the difference in the record high and the record low temperatures?

Answers

Answer:

109 - -37 = 146

Step-by-step explanation:

Answer:

146

Step-by-step explanation:

Pls answer and show me how u got answer

Answers

Answer:

B which is 2/4.

Step-by-step explanation:

Elin: worked for 2/4 + 1/4 = 3/4 of an hour on an assignment

Jocyln worked for 5/4 of an hour the same   assignment

The difference in time is 5/4 - 3/4 = 2/4 or 1/2 hour.

Note: when you subtract fractions, the denominators must be the same. What you subtract is the numerators (top part of the fraction).

If f(x) = mx² - 6x - 3 and f'(1) = 12. find the value of constant in (a) 9 (b) 3 (c)-3 (d) -4​

Answers

Answer:

a) 186

b) 6

c) 42

Step-by-step explanation:

[tex]f(x) = m {x}^{2} - 6x - 3[/tex]

f'(1) = 12

f'(x) = 2mx - 6

12 = 2(1)m - 6

12 - 6 = 2m

[tex] \frac{2m}{2} = \frac{6}{2} [/tex]

[tex]m = 3[/tex]

[tex]f(x) = 2 {x}^{2} - 6x - 3[/tex]

a)

f(9) = 3( 9)^2 - 6(9) - 3

f(9) = 186

b)

f( 3) = 3( 3)^2 - 6( 3) - 3

f(3) = 6

c)

f( - 3) = 3( - 3)^2 - 6( - 3) - 3

f(-3) = 42

Please help me!! I don't understand how to do this

Answers

Answer:

76 feet^3

Step-by-step explanation:

Well, since s is showed three times on the large box, we can say they are all the same lengths. So, if one side is 4 feet long, then all side length, are 4. So, 4*4*4. This gets us 64.

So the large box's volume is 64, and the small one, is 12. The total volume is them added. 64+12. This gets us 76.

The answer is 76 feet^3

L=9m + 2n. Work out the value of L when m = 3 and n = -6

Answers

Answer:

L= 15

Step-by-step explanation:

L= 9m + 2n        Given Equation

L = 9 (3) + 2 (-6) Substitute values for their variables

L= 27 + 2 (-6)     Simplify multiplication

L= 27 -12            Simplify multiplication (remember a positive times a

                          negative is a negative)

L= 15 (Simplify)

In the standard (x,y) coordinate plane, a line intersects
the y-axis at (0,2) and contains the point (8,3). What is
the slope of the line?

Answers

Answer:

[tex]\sf Slope =\dfrac{1}{8}[/tex]

Step-by-step explanation:

(0,2) ;  (8 ,3)

Slope:

[tex]\sf \boxed{Slope = \dfrac{y_2-y_1}{x_2-x_1}}[/tex]

         [tex]\sf = \dfrac{3-2}{8-0}\\\\=\dfrac{1}{8}[/tex]

What is the percent of decrease from 2.2 to 2.2?

Answers

Answer:

0

Step-by-step explanation:

(2.2-2.2):2.2*100 =

(2.2:2.2-1)*100 =

100-100 = 0

Simplify the given polynomial expressions as much as possible

(12a2 + 6a - 8) + (-22a2 + 12 - 15a)

Answers

Answer:

- 10a² + a + 4

Step-by-step explanation:

( 12a² + 6a - 8 ) + ( - 22a² + 12 - 5a )

= 12a² + 6a - 8 - 22a² + 12 - 5a

= 12a² - 22a² + 6a - 5a + 12 - 8

= - 10a² + a + 4

Answer:

Step-by-step explanation:

Remark

There is an isolated plus sign in the middle so removing the brackets is going to allow you to collect like terms quickly and immediately.

Solution

12a^2 + 6a - 8 - 22a^2+ 12 - 15a     Group like terms together in pairs.

12a^2- 22a^2 + 6a - 15a - 8 + 12     Combine like terms.

Answer

-10a^2 - 9a + 4


Sonia will go on a 9-day vacation with his grandparents. He will take $57 of his
own money. His grandparents will give him another $78. Sonia will spend all
of the money and he will spend the same amount each day. How many dollars
will Sonia spend each day of the vacation?

Answers

Answer:

$15

Step-by-step explanation:

Sonia will take $57, and his grandparents will give another $78. 57 + 78 = 135. Sonia will have 135 dollars, but it is a 9 day vacation, so 135/9 = 15

Sonia will spend 15 dollars a day.

One angle of a triangle measures 20°the other two angles are in a ratio of 3:5. What are the measures of those two angles?

Answers

Answer:

180-20 = 160 = sum of the other two angles

3/(3+5) = 3/8 x 160 = 60 degrees

5/(3+5) = 5/8 x 160 = 100 degrees

or in radians the other two angles are pi/3 and 5pi/9

Step-by-step explanation:

THIS ANSWER IS CORRECT

BRAIN LESS ANSWER

Isaac bought snacks for his team's practice. He bought a bag of chips for $2.94 and a 8-pack of juice bottles. The total cost before tax was $16.62. How much was each bottle of juice?

Answers

Answer:

$1.71

Step-by-step explanation:

Just took the test.

The cost of each juice bottle is $1.71.

Let, the cost of each juice bottle as "x".

Given:

Cost of chips = $2.94

Total cost before tax = $16.62

Isaac bought an 8-pack of juice bottles, so the total cost of the juice bottles is 8x.

The total cost of chips and juice bottles should be equal to the total cost before tax:

Cost of chips + Cost of juice bottles = Total cost before tax

$2.94 + 8x = $16.62

Now, solve for "x" the equation:

8x = $16.62 - $2.94

8x = $13.68

Divide both sides by 8:

x = $13.68 / 8

x = $1.71.

So, the cost of each juice bottle is $1.71.

To learn more on equation click:

https://brainly.com/question/14468218

#SPJ3

If a circle is equally divided into 6 angles, what is the measure of each angle?

Answers

Step-by-step explanation:

The answer is 60°

because

360÷6 = 60

12 = x - 24

I think know the answer but I’m unsure of how to do it

Answers

Answer:

36

Step-by-step explanation:

you have to isolate your variable. To do this, you add 24 to each side. On the left side its 12+24 and on the right, its 24+(-24) which then equals zero. In simple terms, x=12+24

Answer:

x = 36

Step-by-step explanation:

Add 24 to 12 because 24 is minus, so when it is moved to the other side of the equation it is plus.

Find f(–2) for the function f(x) = 3x2 – 2x 7. −13 −1 1 23

Answers

Answer:

16

Step-by-step explanation:

f ( x ) = 3x² - 2x

To find : f ( - 2 )

f ( - 2 ) = f ( x )

Here,

x = - 2

f ( - 2 ) = 3 ( - 2 )² - 2 ( - 2 )

           = 3 ( 4 ) - 2*( - 2 )

           = 3*4 + 4

           = 12 + 4

f ( - 2 ) = 16

due today need help pls

Answers

Answer:

I beleive that the systems of transformation are that

Figure JKLM to Figure J' K' L' M' is a Rotation

Figure J' K' L' M' to Figure J" K" L" M" is a Dilation

Step-by-step explanation:

The sum of 9 times a number and 8 is 2

Answers

Answer:

where is the question?

Step-by-step explanation:

Kenny and Dee Dee purchased 400 shares of Fly-By-Night stock 3 years ago. They initially paid $6,846
for the stock. Last week they sold the stock at $40. 25 per share. The brokers sales commission was
3. 2%

Answers

Answer: Im not sure

Step-by-step explanation:

don’t even pay attention to this

Function 1 is defined by the following table

x. Y

0. 8

3. 12. 5

4. 14

6. 17


Function 2 is defined by line H

Answers

Wjats the best way for you yetwywtw you get your help for your work and work on the building your new job and you can do more homework and your help with the help for help with the family room and your family member and family members are coming now

Answer:Function 2

Step-by-step explanation:

What is the slope of the line that contains the points (-1, 2) and (3, 3)?

Answers

Answer:

[tex]\text Slope = \frac{1}{4}[/tex]

Step-by-step explanation:

the slope of the line that passes through the points

[tex]\large A\left( x_{1},y_{1}\right) \text{and} \ B\left( x_{2},y_{2}\right)[/tex]  

[tex]\large \text{slope} =\frac{y_{2}-y_{1}}{x_{2}-x_{1}}[/tex]

the slope of the line that contains the points (-1, 2) and (3, 3) is :

[tex]\Longrightarrow \text{slope} =\frac{3-2}{3-\left( -1\right) }= \frac{1}{4}[/tex]

Misty needs 216 square inches of metal

to make a yield sign.

If the height of the sign is 18 inches,

how long is the top edge of the sign?




24 inches


12 inches


198 inches


22 inches

Answers

Answer:

24

Step-by-step explanation:

Area = 216

The area of triangle = 1/2 b * h

Since height = 18 --> 1/2 b * 18

so,

216 = 1/2 b * 18

Divide both sides by 18

12 = 1/2 b

Divide both sides by 1/2, (which is the same as multiplying both sides by 2)

24 = b

Answer:

24 inches

Step-by-step explanation:

Given:

[tex]\bullet \ \ \text{Height of sign: 18 inches} \\ \bullet \ \text{Area of Yield sign: 216 inches}^{2}[/tex]

The yield sign shown here is a triangle. Therefore, the question is asking to find the base of the triangle. Keep in mind that the area of a circle is 1/2 multiplied by the base multiplied by the height.  

[tex]\implies \text{Area of yield sign} = \dfrac{1}{2} \times \text{Base} \times \text{Height}[/tex]

Substitute the height and the area in the equation and simplify.

[tex]\implies \text{216 inches}^{2} = \dfrac{1}{2} \times \text{Base} \times 18[/tex]

[tex]\implies \text{216 inches}^{2} =\text{Base} \times 9[/tex]

Divide both sides by 9.

[tex]\implies \dfrac{\text{216}}{9} =\dfrac{\text{Base} \times 9}{9}[/tex]

[tex]\implies24 \ \text{inches} =\text{Base}[/tex]

find six rational number between –1 and 0​

Answers

Answer:

Answer. so -7/8, -6/8, -5/8, -4/8, -3/8, -2/8 are the six no.

Step-by-step explanation:

PLEASE HELP WILL GIVE BRAINLIEST

Answers

Answer: Definition of midpoint

Step-by-step explanation:

Answer:

defintion of midpoint

Step-by-step explanation:

that is the proof

Rasheed has tan pants, black pants, gray pants, and blue pants. He has a brown sweater and a white sweater. How many different ways can he wear a sweater and pants together

Answers

Answer:

Step-by-step explanation:

There are 4 different colors of pants.

There are 2 sweaters.

The total number of ways of making a particular pair of pants and a sweater = 4 * 2 = 8

Answer: there are 8 combinations of clothing

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