solve each system using the substitution method 6x-y=-4 and 2x+2y=15

Answers

Answer 1
Convert 6x - y = -4 into y = mx + b
Y - 4 = 6x
Y = 6x + 4
Substitute that into second equation
2x + 2(6x + 4) = 15
2x + 12x + 8 = 15
14x = 7
X = 1/2
6(1/2) - y = -4
3 - y = -4
-y = -7, y = 7
Final answer: x = 1/2, y = 7

Related Questions

Look at the picture!!! Which of the following set of coordinate points are ALL solutions to the given system of inequalities? (0, 3); (1, 0); (0, 2) (2, 0); (0, 2); (0, 1) CO, OD: (0, -D: (-1, 0)​

Answers

Answer:

soo whats the question

please repost question without this drawings

Write a linear equation in slope intercept form of a line with a slope of 12 and the point (0, 10).

y = 12x - 10

y = 12x + 10

y = 10x + 12

x = 10y - 12​

Answers

its y=mx+b so you will get b as the answer
It’s B, I used to do linear equations a lot in middle school and in 9th grade. Always remember (x,y), this will help you a lot. The point was (0,10) so ten is the y-intercept because it’s in the place of y so that means that’s where you’ll be starting at so you will add but if it’s negative you will subtract.

The price of an item has been reduced by 10%. The original price was $46. Find the price of the item now.

Answers

41.4

Step-by-step explanation:

Hope this helps ∞<3

let me know if its right or wrong

Chandra bowled five games. Her scores were 89, 97, 112, 104, and 113. What is her mean score for the five games?

Answers

103 because you have to add all the numbers up then divide that number by however many numbers there are to get mean.

7th grade
HELP MEEEE!
due today

Answers

You got it on the correct spot good job and good luck hun

Answer:

A.

Step-by-step explanation: Because as you see the dot is past the 2 and is on the third line out of 4, the 4th line is the next number.

SOMEONE PLEASE HELP WILL MArk BRAINLIEST ‼️‼️

Answers

Answer:

y=3x+2

Step-by-step explanation:

Simplify each pair of solutions as much as possible. Identify each pair of numbers as RATIONAL, IRRATIONAL, or COMPLEX/IMAGINARY.

Answers

Answer:

irrational duh

Step-by-step explanation:

Write an equation of the line passing through point (7,3) that is parallel to line 4x-7y=9

Answers

Answer:

y= 4/7x -1  

Step-by-step explanation:

solve for y first in 4x-7y=9, which becomes y = 4/7x - 9/7, then since its a parallel line the slope stays the same which is 4/7. Then plug into this equation: y =mx+b, in which you plug in the point for the x and y values and you plug in the slope for m, so the equation becomes, 3 = (7)(4/7) + b and now solve for b in which b = -1 and now write the equation using all the corresponding things so the equation becomes: y= 4/7x -1  

1
A percent of change is the ratio of the amount of change to the original amount.

Answers

Answer:

I believe this would be true

Step-by-step explanation:

Whats the absolute value of 3 1/7

Answers

Answer:

3.142857  (3.14)

Step-by-step explanation:

solve for X !

answer quickly please

Answers

42 degrees
You do 3x+1=125 to get your answer

please help me with this question

Answers

Answer:

First question is 109

Second question is 45, but I guess it's a typo with 145.

5th question
answer Plss​

Answers

Answer:

no

Step-by-step explanation:

57 isnt a prime number

what does this equal 50+80
also, what is 50+80

Answers

Answer: 50+80=130

I wasn’t really sure of what you were really asking, apologies.

Answer:

130 is your answer!

Step-by-step explanation:

50 + 80 can be put as 5 + 8 = 13 and then add a 0. You will get 130!

Jordan has traveled 255 miles out of 340 miles on a trip. What percent of the total distance has he traveled?

A. 73%
B. 82%
C.75%
D. 70%

Answers

the answer would be C. 75%
The correct answer is C !

What is the slope of a line passing through (4, 3) and (3,1) ?

Answers

Answer:

[tex]m=2[/tex]

Step-by-step explanation:

Which expression is equivalent to 4(7 + 8)?

Answers

28+32
Hope this helps

Answer:

28+32

Step-by-step explanation:

4(7+8)

= (4*7)+(4*8)

= 28+32

Find the slope of the line that passes through (5,2) and (9,6).

Answers

Slope: (y2-y1)/(x2-x1)
(6-2)/(9-5) = 4/4 = 1
The slope is 1

Answer:

1

Step-by-step explanation:

slope m=y2-y1/X2-x1

=6-2/9-5

=4/4= 1

Helppp I’ll mark you as brainlister you

Answers

Answer:

[tex]\triangle KLM \sim \triangle GFH[/tex]

Step-by-step explanation:

In similar triangles, the corresponding angles must be congruent. We see from the diagram that [tex]\angle K \cong \angle G[/tex], [tex]\angle L \cong \angle F[/tex], and [tex]\angle M \cong \angle H[/tex]. Therefore, [tex]\triangle KLM \sim \triangle GFH[/tex].

Pls help me asap!!!!

Answers

Answer:b

Step-by-step explanation:y=2x-3

5(x – 3) > 7x + 2


what is the value of x?​

Answers

Answer:

If I am not mistaken the answer is x<-27/2.

Will give brinley crown thing! :)

Is x = 4 the correct solution to the equation 2x - 8 = 12 - 4x ? Explain your reasoning using a complete
sentence.

Answers

Answer:

x = 10/3

Step-by-step explanation:

Here are graphs of two functions f and g the function h is defined by h(x)=f(x)-g(x)
1.for which values of x is h(x)=0? explain how you know
2.For which values of x is h(x) 0
3.sketch a graph of h
I am not good at math and don't feel like taking it again pleas help ;-;

Answers

i did this last year lol ;-;

The function h(x) is h(x)=5/4 x² - 5/2 x.

What is quadratic equation of graph?

A quadratic function is one of the form f(x) = ax² + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola.

The vertex form of a quadratic function is f(x) = a(x - h)² + k, where (h, k) is the vertex of the parabola. The coefficient a determines whether the graph of a quadratic function will open upwards or downwards.

Here, vertex is (h, k)=(0, 0) and coordinate point is (x, y)=(-2, 5)

So, 5=a(-2-0)²+0

5=4a

a=5/4

Substitute, a=5/4 and (h, k)=(0, 0) in vertex form we get

f(x)= 5/4 x²

Equation of straight line with coordinates (-2, 5) and (0, 0) is

Slope m=5/2

Substitute, m=5/2 and (x, y)=(0, 0) in y=mx+c we get

0=5/2(0)+c

c=0

Substitute, m=5/2 and c=0 in y=mx+c we get

y=5/2 x

So, g(x)=5/2 x

Now, h(x)=f(x)-g(x)

h(x)=5/4 x² - 5/2 x

h(x)=5/2 x(1/2 x-1)

1) h(x)=0

5/2 x(1/2 x-1) =0

1/2 x-1=0

1/2 x=1

x=2

2) For x=2, h(x) is 0

3) Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Therefore, the function h(x) is h(x)=5/4 x² - 5/2 x.

To learn more about the quadratic function visit:

https://brainly.com/question/27918223.

#SJ5

need help with algebra

Answers

I believe it’s -7 hope it helps!!

Because Kendall's business spent more money than it collected, the business's balance sheet showed a balance of -$1,280$ at the end of the month. The next day, Kendall's business spent $560 on new tools. Part A Kendall determines that the new balance is -$720 because 1,280 + 560 = -720 . Did Kendall correctly determine the new balance? Explain why or why not. If not, calculate the new balance. Respond in the space provided.

Answers

Answer: No. Kendall did not correctly determine the new balance. The new balance is -$1840.

Step-by-step explanation:

From the question, we are informed that Kendall's business spent more money than it collected, and therefore the business's balance sheet showed a balance of -$1,280 at the end of the month. We are informed that the next day, Kendall's business spent $560 on new tools.

Therefore, since Kendall made a purchase, this is an expense and we have to subtract it from the previous balance. This will be:

= -$1280 - $560

= - $1840

The new balance is -$1840

Answer:

She is not correct. The correct answer should be -$1840

Step-by-step explanation:

Explanation: Kendal is ultimately wrong, because in his step in adding the $560 spent on new tools, she had added a positive number, which meant they deposited money to go out of debt. Instead he was supposed to subtract the $560, or even add -$560 to the businesses balance. If calculated correctly, by subtracting $560 to the current balance, it would get us to -$1840.

The sum of positive integers b and h is 34. If their difference is 8, what is the value of bh?

A. 25

B.56

C. 75

D. 273

Answers

13 and 21
13 * 21 = 273
It would be D

Answer:

D. 273

Step-by-step explanation:

b+h=34

difference is 8

2b=42

b=21

34-21=13

h=13

13*21=273

answer is D

look at the picture 10 points
please do not answer if u do not know the answer

Answers

Step-by-step explanation:

well what is the question??

In the figure above, AB = AD, BC = CD, BE = 2, BC = 4, and AC = 10. What is the area of triangle ABD?

Answers

The properties of items in a question can be used to simplify the solution to the questions

The area of triangle ΔABD is 20 - 4·√3

The reason the above value for the area of ΔABD is correct is as follows:

The given parameters are;

AB = AD, BC = CD, BE = 2, BC = 4, AC = 10

Given that AB = AD, and BC = CD, we have that the figure ABCD is a kite

AC is perpendicular to BD by properties of the diagonals of a kite

ΔBCE is a right triangle

By Pythagoras' theorem, [tex]\overline{CE}[/tex]² = [tex]\overline{BC}[/tex]² - [tex]\overline{BE}[/tex]²

Which gives;

[tex]\overline{CE}[/tex]² = 4² - 2² = 12

[tex]\overline{CE}[/tex] = 2·√3

Given that AC is the perpendicular bisector of BD, by the properties of a kite, we have;

BD = BE + DE, where BE = DE definition of bisected line

BD = BE + BE = 2·BE

Area of a triangle = (1/2) × Base length × Height

AE = The altitude (height) of the ΔABD = AC - CE

∴ AE = 10 - 2·√3

BD = The base length of ΔABD = 2·BE (Length of BE = 2)

∴ BD = 2 × 2 = 4

The area of triangle ΔABD = (1/2) × BD × AE

∴ The area of triangle ΔABD = (1/2) × 4 × (10 - 2·√3) = 20 - 4·√3

The area of triangle ΔABD = 20 - 4·√3

Learn more about the properties of a kite here:

https://brainly.com/question/24110637

Brian has $100 in his pocket. As he is walking home 1/4th of the money falls out of his wallet. Of the remaining money, he uses $15 to buy girl scout cookies. Lastly, of the remaining money he loses 1/3rd. How much money does he have left by the time he makes it home?

Answers

Answer:

$40

Step-by-step explanation:

Brian starts at $100, then loses 1/4th of the money,

100/4 = 25,

then you subtract 25 from 100, which gives you 75

With the remaining $75, he spends $15 on girl scout cookies,

75 - 15 = 60

He then has $60 remaining, but while walking home, loses 1/3 of the total amount.

60/3 = 20,

you then subtract 20 from 60, which gives you 40

Therefore, $40 is what is remaining.

Find the sum. (w+8) + 2(w +9)

Answers

First step: w+8+2w+9
Final answer: 3w + 17
The answer is 3w+17.
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