3x + y = 15 What is the solution of this system of equations? (5x+2y=-4​

Answers

Answer 1

Answer:

x=34    y=-87     (34,-87)

Step-by-step explanation:

3x+y=15              rewrite to solve for y  ----->    y=15-3x

5x+2y=-4

Plug y=15-3x into 5x+2y=-4

So, 5x+2 (15-3x)=-4

Distribute: 5x+30-6x=-4

Combine like terms: 30-x=-4

Solve for x   -x=-34

Solve for x   x=34

Then, to solve for y, plug "x" into 3x+y=15

So, 3(34)+y=15

Distribute: 102+y=15

Solve for y  y=-87


Related Questions

-z=8
Evaluate and solve for the variable

Answers

Answer:

z=-8

Step-by-step explanation:

Answer:

isnt there supposed to be more numbers?

Step-by-step explanation:

3. Simplify the following inequalities.

Answers

Answer:

7x+7 > 23-x

group like terms

7x+ x > 23-7

8x > 16

we divide both side by

8x > 16

8 8

so 8 cancelled out 8 living

x > 16

8

x > 2

8

we

The function f(x) =x^3 +2x has an inverse function g. Find g’(0) and g’(3).

Answers

Step-by-step explanation:

follow the steps to get answer

Write an Equivalent Expression by combining like terms for 2x+3x+y+2y

Answers

Answer:

5x+3y

Step-by-step explanation:

2x+3x=5x since they have the same variable.

y+2y

1y+2y u can put a 1 so that would be 3y

5x+3y

What is the area in square feet 6.3ft, 8ft

Answers

Answer:

go to my account and answer the latest question and say lol u dont

have to answer it tho just put lol for 25 free points.

Step-by-step explanation:

Answer:

50.4

Step-by-step explanation:

Which expression is equivalent to X
(13),
Ο Ο Ο Ο
4
x9
13
x 6

Answers

Answer:

x

Step-by-step explanation:

[tex]\huge \bigg( {x}^{ \frac{2}{3} } \bigg) ^{ \frac{3}{2} } \\\\

\huge= {x}^{ \frac{2}{3} \times \frac{3}{2} } \\\\

\huge= {x}^{ \frac{6}{6} } \\\\\huge= x \\ [/tex]

Number 1
In the relation, what is the domain?
I
In the relation, what is the range?

Answers

Answer:

Step-by-step explanation:

D(x)= (-1, -1\2, 3/2, 2)

A domain is any X value in an array of ordered pairs

A recipe requires \frac{1}{3}
1
3
cup of milk for each \frac{1}{4}
1
4
cup of water. How many cups of water are needed for each cup of milk?

Answers

Answer:A

Step-by-step explanation:

A

Suppose two $20 bills, three $10 bills, one $5 bill, and seven $1 bills are placed in a bag. If you were to pull a bill at random, what is the expected value for the amount chosen

Answers

Answer:

Assuming that the $1 bill was pulled at random, then the expected value of the amount chosen is [tex]\frac{7}{13}[/tex].

Step-by-step explanation:

From the given question, the bag contains;

$1 bill = 7

$5 bill = 1

$10 bill = 3

$20 bill = 2

Total number of bills in the bag = 13

Pulling a bill at random, the bills would have an expected value as follows:

For $1 bill, the expected value = [tex]\frac{7}{13}[/tex]

For $5 bill, expected value = [tex]\frac{1}{13}[/tex]

For $10 bill, expected value = [tex]\frac{3}{13}[/tex]

For $20 bill, the expected value = [tex]\frac{2}{13}[/tex]

Assuming that the $1 bill was pulled at random, then the expected value of the amount chosen is [tex]\frac{7}{13}[/tex].

Find the value of 542x92+542

Answers

the answer is 50,406
mark me brainliest if the answer is correct, thank you in advance :)
Well, according to PEMDAS, you do multiplication first so 542x92= 49,864+542 which equals 50,406

Which one A,B,C,D This times so I need a answer in a hurry

Answers

Answer:

um c? i think so, i dont rly know

Step-by-step explanation:

A house increased in value by 36 percent since it was purchased. If thw current value is 306000 what was the value when it was purchased

Answers

Answer: 30599.964
Because I did the math

If a data set has mean of 150 and a standard deviation of 25, what is the z-score of an element with a value of 250?

Answers

Answer:

Z-score is 4

Step-by-step explanation:

N(150, 25^2)

Use z-score formula (can be found from internet with miu and sigma symbol)

[tex]z = \frac{250 - 150}{25} \\ z = \frac{100}{25} \\ z = 4[/tex]

The editors of a local
newspaper went to lunch to
celebrate birthdays. The
lunch costs $17.8.25 and they
left a 15% tip. What was the
cost of the meal?

Answers

Answer:

$111.52

Step-by-step explanation:

You have to divide your total amount by 1.15 and that will give you your answer. To check your work you can add your answer and 15% of your answer together. {111.52+(111.52x0.15)=128.25}

Find the commission.
Earning Commission
Sales Commision Rate Commission
$750
9%
?
The commission is $

Answers

Answer:

The commission would be $67.50.

Answer:

$67.50

Step-by-step explanation:

commission amount =  sale price * commission percentage / 100

write the equation of the like that is parallel to the line y=3x+6 and passes through the point (4,7)

Answers

Answer:Find the slope of the original line and use the point-slope formula  

y

y

1

=

m

(

x

x

1

)

to find the line parallel to  

y

=

3

x

+

6

.

y

=

3

x

5

Step-by-step explanation:

Is the graph below proportional? Explain.
500
400
300
Total cost ($)
200
100
0 2 4 6 8 10
Time (h)

Answers

Answer:

50/1

Step-by-step explanation:

x=1,2,3

y=50,100,150

y/x=50/1

Need help id appreciate it

Answers

Answer:

x=14

Step-by-step explanation:

If the square from GAI are 6 cm, then the other half of the triangle is also 6 inches long. Because it is not an even sided triangle, all the sides shouldnt be the same size. If you multiply 6 by 2 you get 12. 7 times 6 is 42. 42 divided by 3 is 14. The value of X should be 14.

at one high school, the mean time for running the 100-yard dash is 15.2 seconds with a standard deviation of 0.9 seconds. the times are very closely approximated by a normal curve. find the percent of times that are at least 14.3 seconds

Answers

Answer:

The percent of times that are at least 14.3 seconds is approximately 16%.

Step-by-step explanation:

Let X denote the time for running the 100-yard dash.

It is provided that the times are very closely approximated by a normal curve.

So, the random variable X follows a normal distribution with a mean time of 15.2 seconds and with a standard deviation of 0.9 seconds.

Compute the probability of times that are at least 14.3 seconds as follows:

[tex]P(X\geq 14.3)=P(\frac{X-\mu}{\sigma}\geq \frac{14.3-15.2}{0.9})[/tex]

                    [tex]=P(Z\geq -1)\\\\=1-P(Z<-1)\\\\=P(Z<-1)\\\\=0.15866\\\\\approx 0.159[/tex]

*Use a z-table.

Thus, the percent of times that are at least 14.3 seconds is approximately 16%.

students set up 6 rows of seats for a music concert. they put 6 seats in each row. what is the total number of seats? solve this problem any way you choose

Answers

Answer:

36

Step-by-step explanation:

becuase each row has 6 in them and there are 6 rows so 36 is the final answer

36 would be the answer if there’s 6 chairs in each rows and 6 rows you just simply multiply 6 and 6 :)

60 POINTS PLEASE SEND ME A COMPLETED COPY OF THIS "linear functions worksheet: child's growth and prosperity

Answers

Answer:

give it to me now and then I'll do it

Answer:

Step-by-step explanation:

Type ALL the steps of writing the equation of the line given the slope of the line is −4 and a point on the line is (−2,1).

Answers

Answer:

y = -4x - 7

Step-by-step explanation:

we use the slope intercept formula given by; y = mx + b

b = y intercept, which is when x = 0

m = slope

so they tell us the slope.. we just need to find b - the y intercept.

y = mx + b

plug in your coordinates (-2,1)

1 = -4(-2) + b

1 = 8 + b

1 - 8 = b

-7 = b

put it all together.

y = -4x - 7

5y + 3y + 5 ≤ ‐2(2y + 4)

Answers

Answer:

y≤−13/12

Step-by-step explanation:

Answer:

y ≤ -13/12 or y = (-oo, -13/12]

Step-by-step explanation:

5y + 3y + 5 ≤ ‐2(2y + 4)8y + 5 ≤ - 4y - 88y + 4y ≤ -8 - 512y ≤ -13y ≤ -13/12ory = (-oo, -13/12]

Holly is making fruit salad. She bought 3 pounds and 3 ounces of fruit. How many ounces of fruit did she buy? *Needed ASAP​

Answers

Answer:

Step-by-step explanation:

do 3 x 16 = 48 + 3 is 51

I don’t get this please help me

Answers

Answer:#1: 1225

#2: 1149

Step-by-step explanation:

Hope this helps! :) ❤❤❤

Help!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

D is the correct answer

Step-by-step explanation:

hope it helps

have a great day

:)

Please find the percent of change rounding to the nearest tenth of a percent

Answers

Answer:

the answer is decreases

This makes so much sense now I’m broken

Answers

Answer: well my two favorite christmas movies just got confusing and kinda ruined at the same time. LOL. BUT it makes sense also if u think abt it he also he has a dog named max, but jack has one named zero so did he just change his name or find a different dog

Help plz it’s 50 points help

Answers

Answer:

Step-by-step explanation:

Answer:

frist answer is right

Step-by-step explanation:

9X3 + 9 X 2 -43 X - 35

Which set of ordered pairs
represents a function?
A. (5,-8),(8,-1),(8,7),(-4,2)
B. (-9,-9),(7,-9),(-7,-7),(9,-8)
C. (4,7),(-7,-4),(6,8),(-7,6)
D. (0,8),(-7,2),(4,-9),(4,-3)

Answers

Answer:

C. (4,7), (-7, -4), (6, 8), (-7, 6)

Step-by-step explanation:

There are no repeating numbers. For example, in answer A, 8 is repeated, (8, -1) and (8, 7)

Hope that helped! If you have any questions, just ask!

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