-3y + 8x = 36
6x + y = -21

Answers

Answer 1

Answer:

x=−27/26

and y=−192/13

Step-by-step explanation:

6x+y=−21;8x−3y=36

Step: Solve6x+y=−21for y:

6x+y=−21

6x+y+−6x=−21+−6x(Add -6x to both sides)

y=−6x−21

Step: Substitute−6x−21foryin8x−3y=36:

8x−3y=36

8x−3(−6x−21)=36

26x+63=36(Simplify both sides of the equation)

26x+63+−63=36+−63(Add -63 to both sides)

26x=−27

26x

26

=

−27

26

(Divide both sides by 26)


Related Questions

Please help asap!
i will give brainliest :)

Answers

Answer:

192

Step-by-step explanation:

so basically when a problem like this is given out and you do not understand the question or just don't want to the best thing you can do is pick B

PLS HELP 25 Points!! What number, rounded to the nearest hundred thousandth (five decimal places), is represented by e?

Enter your answer as a decimal, like this: 42.53647

Answers

Answer:

I'm not entirely sure but i think it's this:

2.71828

hope this helps

Step-by-step explanation:

Karen bought 11/12 pound of fruit salad. How many 1/3 ​ pound servings of fruit salad are in 11/12 ​pound?

Answers

Divide 11/12 and you willl get your answer

What type of association is shown by the data in the scatter plot?

Answer Choices:

A. positive association

B. negative association

C. no association

D. trend association

Answers

Answer: B) Negative association

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

Explanation:

We can draw a straight line fairly close to all of the points. This line is known as the regression line, or line of best fit. Since this line has a negative slope, we consider the points to have negative association.

Put another way: as x goes up, y goes down, or vice versa. The two work opposite variables do opposite actions.

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

Extra info:

Positive linear association would be when x and y go up together, or go down together. The variables go in the same direction together. The regression line would have positive slope.Points with no linear association would either be randomly scattered points, or perhaps another function type (eg: quadratic) would fit the points. The term "trend association" just seems to be something your teacher made up in order to possibly confuse students.

I need help on this please ​

Answers

Ya I think it is also the second one

If you ride your bike 30 kilometers in 2 hours, what is your average speed?

Answers

15 km per hour because you do 30km divided by 2 hours

Answer:

15 km/h

Step-by-step explanation:

A 9 pound bag of brown rice cost 40. 32 what is the price per ounce

Answers

Answer:

price per ounce: $4.48

Step-by-step explanation:

divide 40.32 by 9

Answer:

0.28

Step-by-step explanation:

9 pound = 144 ounce

40.32 / 144 = 0.28

PLSSS I NEED THIS QUICK AND WRITE IN SCIENTIFIC NOTATION

Answers

Answer:

i was born 2008

Step-by-step explanation:

How do you add integers with different signs?

Answers

Answer:

To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.

Step-by-step explanation:

Find V. 10 points plz.

Answers

Answer:

v = 60 yards

Step-by-step explanation:

In the similar triangles, their corresponding sides are proportional which means they have equal ratios

In triangles IHG and FHJ

Δ IHG ≈ FHJ

∵ Side IH is corresponding to side FH

∵ Side HG is corresponding to side HJ

∵ Side IG is corresponding to side FJ

→ Their ratios are equal

[tex]\frac{IH}{FH}[/tex] = [tex]\frac{HG}{HJ}[/tex] = [tex]\frac{IG}{FJ}[/tex]

IH = 54 yards and FH = 72 yards

IG = v and FJ = 80 yards

→ Substitute them in the first and last ratios above

∴ [tex]\frac{54}{72}[/tex] = [tex]\frac{v}{80}[/tex]

→ By using cross multiplication

v × 72 = 80 × 54

∴ 72v = 4320

→ Divide both sides by 72

v = 60 yards

The function y = 3x + 42 models the average number of dogs at an animal shelter, where x is the number of days after July 1. The
function y = 4x + 7 models the average number of cats at the animal shelter, where x is the number of days after July 1. After how many
days is the average number of cats and dogs at the shelter the same?
A. 35 days
B. 49 days
C. 7 days
D. 5 days

Answers

The answer is b 49 days

Graph the line.
y=-5x+4
15 points

Answers

Answer:

go up 4 on the y axis and then go up five and to the left 1. Also go to desmos and it will answer all out your graphing question.

Step-by-step explanation:

Brainliest pls

Put a point on the 4 in the y- axis, then go down 5 times and 1 time to the right (put a point) and go to the point you start(4) and go up 5 times and 1 time to the left( put another point) and you have the line.

Hope this helps :D

Give the equation of the line, perpendicular to the line with equation y=2x+1, that passes
through the point (8,-2)

Answers

Answer:

y=-1/2x+2

Explanation:

what is the slope and y intercept of y=3?

Answers

Answer:

m=0; y intercept=3

Step-by-step explanation:

The line is perfectly horizontal, which means that the slope is 0. Since it is horizontal, we can reason that the y intercept has to be 3.

HTH :)

Which statement is true? The equation –3|2x + 1.2| = –1 has no solution. The equation 3.5|6x – 2| = 3.5 has one solution. The equation 5|–3.1x + 6.9| = –3.5 has two solutions. The equation –0.3|3 + 8x| = 0.9 has no solution.

Answers

Answer:

-.3|3+8x|=.9 has no solution

Step-by-step explanation:

There was not outcome for x when you solve it

Answer:

d

Step-by-step explanation:

just took the quiz and got it right :)

A cyclist rode for 3.5 hours and completed a distance of 60.9 miles. If she kept the same average speed for each hour, how far did she ride in 1 hour? Part A Estimate the quotient. Include an equation to show your work. Explain your thinking.? Part B Find the exact distance she rode in 1 hour by completing the division. PLEASE HELP!

Answers

Answer:

She rode 17.4 miles in 1 hour

Step-by-step explanation:

A cyclist rode for 3.5 hours and completed a distance of 60.9 miles. If she kept the same average speed for each hour, how far did she ride in 1 hour?

Part A Estimate the quotient. Include an equation to show your work. Explain your thinking.?

The quotient is the average speed and this is calculated as:

Speed = Distance(miles)/Time(hours)

Where speed = quotient

Distance = Dividend

Time = Divisor

Speed = 60.9 miles/3.5 hours

= 17.4 miles/hour

Part B Find the exact distance she rode in 1 hour by completing the division. PLEASE HELP!

If :

3.5 hours = 60.9 miles

1 hour = x miles

Cross Multiply =

3.5x = 60.9 miles

x = 60.9/3.5

x = 17.4 miles

Hence, she rode 17.4 miles in 1 hour

x^2 + 7x – 18 = 0
a
{–2, 9}
b
{–9, 2}
c
{2, 9}
d
{–2, –9}

Answers

Answer:

b)-9,2

Step-by-step explanation:

x^2+7x-18=0

x^2+9x-2x-18=0

x(x+9)-2(x+9)=0

(x+9)(x-2)=0

therefore

x=-9

x=2

How do I solve for the missing angle?!
And please include explanations​ on how you got the answer

Answers

Answer:

75°

Step-by-step explanation:

In triangle FBG, one angle is 36.  That means the other two must total 180-36=144.  Assigning each one 72, their supplementary angle on the interior of the pentagon would be 108.

In triangle JDI, one angle is 39.  That means the other two must total 180-39=141.  Assigning each one 70.5, their supplementary angle on the interior of the pentagon would be 109.5

We now have 4 of the interior angles.  Pentagons have an interior total of 540.  540-108-108-109.5-109.5=105

x is the supplement of 105.  180-105=75

What is f(x) =3x^2-7/4x^2-3 find f(2)

Answers

f=5/8x^2+-3/2

Divide both sides by two

Ten baseballs weigh 1,417.4 grams. About how much does 1 baseball weigh? Round your answer to the nearest tenth of a gram. Round your answer to the nearest gram.. Which answer would you give if someone asked, "About how much does a baseball weigh?" Explain your choice.

Answers

Answer:

See explanation

Step-by-step explanation:

If all the ten balls weigh 1,417.4 grams

Then 1 ball weighs 1,417.4 grams/10 = 141.74

To the nearest tenth = 141.7

To the nearest gram= 142

If someone asks me the weight of one ball I will give the answer as 141.7 because it contains exactly the same number of decimal points as we have in the question.

The equation y=1200(1/2)x represents the remaining amount of compound A, in grams, after x minutes. The table shows the remaining amount of compound B. Time (min) Grams of B 1 750 2 375 3 187.5 What is the positive difference in the initial amount of each compound? Enter your answer in the box

Answers

Answer:

300

Step-by-step explanation:

Trust me I took the test, Merry Christmas

Answer:

300

Step-by-step explanation:

find the product of 123 x 48​

Answers

Answer:

5904

Step-by-step explanation:

how do you add or subtract [-4]+6

Answers

Answer:

2

Step-by-step explanation:

(-4) + 6

remove the unnecessary parentheses

-4 + 6

calculate the sum which is

2

Answer:

2

Step-by-step explanation:

[-4] + 6 = 2

When two numbers are of different sign, subtract and the result will have the sign of bigger number.

Here the bigger number is 6 and it's sign is positive (+). So , the answer is +2

Find the value of the function below for the given x-value

F{x} = -5x-1 when x=-3

Answers

Answer:

x = 2/5

Step-by-step explanation:

See the image for the explanation

I have 9000 grams of chocolate. I know that 1 pound is equal to 0.45 Kg. How many pounds of chocolate do I have?

Answers

Answer:

20

Step-by-step explanation:

For any whole number b that is a PERFECT SQUARE

Answers

Is there a diagram? ........

Answer:

Step-by-step explanation:

Yes they are always perfect squares for every whole number

Remove the brackets and simplfy 5-(6a -3b -8)​

Answers

Answer:

−6a+3b+13

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]5 -6a+3b+8\\5+8-6a+3b\\13-6a+3b[/tex]

The system of inequalities in the graph represents the change in an account, y, depending on the days delinquent, x. On a coordinate plane, 2 dashed straight lines are shown. The first line has a positive slope and goes through (negative 2, negative 2) and (0, 0). Everything to the right of the line is shaded. The second line has a negative slope and goes through (negative 2, 2) and (0, 0). Everything to the left of the line is shaded. Which symbol could be written in both circles in order to represent this system algebraically? y Circle x y Circle –x ≤ ≥

Answers

Answer:

C.<

Step-by-step explanation:

got it wrong on the exam review and it told me the right answer after.

Answer:

It is C.  <

Step-by-step explanation:

edge 2021

What is the slope of the line that passes through the points (8,2) and (9,3)? Write
your answer in simplest form.

Answers

The slope is ( 3-2 )/( 9-8) = 1
Slope = change in y / change in x
Slope = (3-2) / (9-8)
Slope = 1/1
Slope = 1

# 4-15 Convert the given amount to the given unit

4. 63 yd; feet

5. 168h; days

6. 2.5lb; ounces

7. 200 cm; meters

8. 4 min; seconds

9. 5kg; pounds

Answers

4- 189 feet
5- 7 days
6- 40 ounces
7- 2 meters
8- 240 seconds
9- 11 lbs
Other Questions
please help with #2 ill mark brainliest Salmon, Inc. issues 505,000 shares of preferred stock for $35 a share. The stock has a fixed annual dividend rate of 5% and a par value of $14 per share. The current price of the preferred stock is $37 a share. If sufficient dividends are declared, preferred stockholders can anticipate receiving annual dividends of:A. $0.70 per share.B. $1.75 per share.C. $1.85 per share.D. $1.05 per share. Find the solution of the system of equations. First equation,- 2x - 5y = -15Second equation, -9x + 15y = -30Will mark brainliest HELP PLSSSS I WILL BE SO APPRECIATIVE:))) What strategies do you think an animal could use to cope with the dry conditions in a desert? When Marion accidentally wounds Robin Hood, not realizing who he is, Robin Hood responds in this way:"'Twas nothing," he replied laughingly, "so long as it brought me you."What character trait does Robin Hoods reply show?a forgiving naturea tendency to seek revengefearfulnessarrogance n which countries do most of the population belong to the same ethnic group? Swaziland Kenya Lesotho Somalia Nigeria A copy machine makes 126 copies in 4 minutes and 30 seconds. How many copies does it make per minute? Identify different ways of interpreting the Constitution. (Site 1) How will humans be affected by changes in the climate?I need a short answer In triangle OPQ, p = 38 cm, q = 29 cm and Angle O=39. Find the length of o, to the nearestcentimeter. who teachers Helen to spell the word doll? What is the Spanish word for "farm"?O A. EstanqueB. GranjaC. Bosque0 D. Senda About how much should the gratuity for the restaurant server be? Round the percent of gratuity to the nearest benchmark percent to find the answer.$ _____ HELP ALMOST DUE! Ill mark someone brainliest if theres 2 answers! What byproducts or environmental changes are created through plastic pollution? Sheila's class recycles a total of 6 pounds of paper in 2weeks. After 5 weeks, how many pounds of paper willSheila's class have recycled? Who is the thief in "Once Upon a Time Tukey Trouble"? if correct ill give you brainlest two times x divide five 14 fish out of 100,000 are blue, what would this be as a percentage?