Solve the linear equation below using the substitution method

x-3y=7
2x+3y=9​

Answers

Answer 1
(16/3, -5/9)

Hope this helps:))
Answer 2
-3y=7
-3y. 7
—— = ——
-3 -3
7
Y= - — —-
3

This is for Number one

Related Questions

hii I need help with this, can someone explain?​

Answers

Answer:

7

Step-by-step explanation:

Question Toss a coin 30 times and record the result in the table given below: a Frequency Tally Possible Outcome Heads Tails (5 marks Represent the result in a bar graph. a (5 Write an observation you made after tossing the coin 30 times? What was the percentage of tails after 30 toss? Working​

Answers

Answer:

Heads 1

Heads 2

Heads 3

Tails 1

Heads 4

Heads 5

Tails 2

Heads 6

Tails 3

Tails 4

Heads 7

Tails 5

Tails 6

Heads 8

Heads 9

Heads 10

Tails 7

Tails 8

Tails 9

Heads 11

Heads 12

Heads 13

Heads 14

Heads 15

Tails 10

Heads 16

Heads 17

Tails 11

Tails 12

Heads 18

Tails was 40% as heads was 60%

Step-by-step explanation:

What's The Answer To This?

Answers

Answer:

The answer would be:

c. [tex]2\sqrt{2}[/tex]

why is math so hard like 23/24 × 34/56 in simplest form I just whish math was never a thing​

Answers

Hey there! :)

[tex]\frac{23}{24} *\frac{34}{56}[/tex]

Let's reduce our fraction:

We can divide 24 and 34 by 2:

[tex]\frac{23}{12} *\frac{17}{56}[/tex]

Now it's a little easier. All we have to do is multiply 23 times 17 and 12 times 56.

[tex]\frac{391}{672}[/tex]

hope it helps..

Look at this graph:
АУ
100
90
80
70
60
50
40
30
20
10
0
10 20 30
40 50 60
70
80 90 100
What is the slope?

Answers

Answer:

The slope is 4 or 4/1.

Step-by-step explanation:

Since these are all in numbers evenly divisible by 10, we can go ahead and make this easier by dividing everything by 10. When we do this, we can see a point crossing an intersection at (3,1), or if you left it, (30, 10). Next, we can see another point crossing another intersection at (4,5) or (40, 50). Since we have two points that are easy for us to subtract, we can use the slope formula. The formula is as follows: y2-y1 / x2-x1. We can pick which of these we want to be 1 or 2, but whichever one we pick has to be 1 or two on both the top on the bottom. for example, I did (50-10) / (40-30). That gets us 40/10. If you divided by ten in the first place, you would get 4/1. From there, if you have the bigger answer, you need to simplify to simply 4. The shorter answer doesn't need to be simplified because we already simplified. I hope this helps!

hello, please help me

Answers

The answer would beX=-2-2

Patty rides her bike 2 3/4 miles to school. She rides 3 5/6 miles to get back home, because she needs to meet her brother at school first. How many miles does Patty ride her bike? Explain how you know that your answer is reasonable.

Answers

Answer:

6 7/12 miles

Step-by-step explanation:

Explanation: The total miles she rides is the miles she rides to school + the miles she rides back

Step 1: Convert both mixed numbers into fractions.

2 3/4 = 11/4

3 5/6 = 23/6

Step 2: Find GCF by multiplying both fractions by opposing denominators

11/4 = 66/24    (11 * 6 = 66, 4 * 6 = 24)

23/6 = 92/24    (23 * 4 = 92, 6*4=24)

Step 3: Add both fractions

92/24 + 66/24 = 158/24

Step 4: Simplify

158/24= 79/12 = 6 7/12 miles

what is the value of x?

Answers

180-X=100 so X=80
80+6x-18+5x+8=180
11X=180-80+18-8
11X=110
X=110/11

So
X=10

6x-18=6*10-18=42
5x+8=5*10+8=58


Im not sure plz check it

I've been stuck on this for so long​

Answers

y = 6/5x - 1

hope this helps :) !!

Answer:

[tex]y = \frac{6}{5}x - 1[/tex]

Step-by-step explanation:

use the formula

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

m is the slope and b is the y-intercept. Begin with b, where the line crosses the y-axis (vertical axis). It crosses at -1, so this is b.

Next move with m. Do rise/run. Start at the y-intercept and you are going to rise 6 and run 5 to the next point. So the slope is 6/5. Leave as an improper fraction. Plug-in for m. Since the line goes uphill from left to right it has a positive slope.

What is the measure of the indicated central angle ? A. None of the above B. 20° C. 15° D. 10° E. 25°

Answers

Answer:

b

Step-by-step explanation:

" lon works at a restaurant and earns $20 for each shift, plus an hourly wage of $9.50. He earned $58 on his last shift, but forgot how many hours he worked. he was able to solve for his shift length bu subtracting 20 from 58 and then dividing by 9.50. Which of the equations below can be solved with these steps? "

A) 58x - 20x = 9.50

B) 9.50x + 20 = 58

C) 20x + 58x = 9.50

D) 20 = 58 + 9.50x

Answers

Answer:

The answer is b

Step-by-step explanation:

x represensts the number of hours worked with 9.50 for every hour and then you  add an extra 20 because that's what his job gives him just for showing up

Free brainliest but help me pls​

Answers

Answer:

A:4

Step-by-step explanation:

3/4 divided by 3/16

3/4 times 16/3

reduce

4

Answer: 4

Step-by-step explanation: do the brackets first. which is (1/2 * 3/8) to multiply these two together multiply numerator by numerator and denominator by denominator. Or, top * top / bottom * bottom

so we'd do 1*2 / 3*8. so it would give you 3/16.

now all we have left to do is divide 3/4 by 3/16.

to do this you can multiply by the reciprocal of the second value(3/16 will become 16/3)

now we have [tex]\frac{3}{4}[/tex] * [tex]\frac{16}{3}[/tex]  you can cancel out each 3 to give you 1/4 * 16/1

and you can also divide both 16 and 4 by 4 (16/4=4)

this gives you a final equation of 1 * 4 for a final answer of 4

Which answer is an equation in point-slope form for the given point and slope?
Point: (5, 9); Slope: 2
y-5= 2 (2 +9)
y-9=2(x+5)
y+9= 2(2-5)
y-9=2(x – 5)

Answers

Answer:  y-9=2(x-5)

Step-by-step explanation: The point (5,9) satisfies the equation:

y-9=2(x-5)  for (5,9)?

9-9=2(5-5) ?

0 = 0  YES

Slope of 2?  Rewrite:  

y-9=2(x-5)

y = 2(x-5)+9

The slope is 2  YES

hELP asap


39.67 + 18.41

Answers

Answer:

58.08

Step-by-step explanation:

Answer:

58.08

Step-by-step explanation:

39.67+18.41=58.08

A set of four stars form the shape of a rectangle in space. The length of the rectangle is approximately 510,000,000 miles, while the width of the rectangle is approximately 366,000,000 miles. What is the approximate area of the rectangle?

Answers

Answer:

The answer is 89

Step-by-step explanation:

I hope you have a great day and please mark me bye(:

Answer: 98873

Step-by-step explanation:

What is the slope of a line perpendicular to the line whose equation is 10x + 6у –84. Fully simplify your answer.​

Answers

Answer:

The slope is 3/5.

Step-by-step explanation:

I am assuming you mean

10x + 6y = 84

6y = -10x + 84

y = -5/3 x + 14.

So the slope of this line is -5/3 and the slope of a line perpendicular to it is

-1 / -5/3 = 3/5.

A car rental agency charges $70 per day, which includes 100 miles. For each mile over 100 miles, there is an additional cost of $0.40 per
Write an equation relating m, the number of miles driven, if the total cost for a one-day rental was $212.

Answers

Answer:

212=70+(m X 0.40)

If $212 is the total cost for a one-day rental, the number of miles driven is 455 miles.

What is an equation?

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

Cost of car rent per day for 100 miles = $70

Additional cost per mile = $0.40

Let m = number of miles driven

Total cost for one day rental = $212

The equation that represents the additional m = miles driven for a day that cost $212 is:

212 - 70 = 0.40m

142 = 0.40m

m = 142 / 0.40

m = 355

This means 355 additional miles were driven.

The number of miles driven for the day is:

= 100 + 355

= 455 miles

Thus if $212 is the total cost for a one-day rental, the number of miles driven is 455 miles.

Learn more about equations here:

https://brainly.com/question/13906726

#SPJ5

Please help me solve this

Answers

Answer:

Step-by-step explanation:

This number is much larger than 1. You need to start at the decimal and move left (that's how scientific notation works for numbers larger than 1.)

So the answer is 1.0054 * 10 ^7

The person doing this started at the 1 and moved right until he/she hit the decimal. Wrong direction.

Heidi is training for a marathon. her training started at 5km and increased by 1.5km every week.

how many weeks hashed been running if she is at 32km

Answers

22222443kmggggghhhhhuuuu

Help please!!

A student has an allowance of $20 each week. He wants to buy lunch at school for $3.50 every day, Monday - Friday. Does the student have enough money to buy lunch?

Why or why not?

Answers

Answer:

Yes

Step-by-step explanation:

Did the math on my calculator on my phone

Answer:

Yes

Step-by-step explanation:

The cost for each meal is 3.50 and there are five days so you would multiply 3.50 by 5 which equals 17.5. So it would cost the students 17.50 each week for the lunch, leaving them 2.50

find the value of each variable 2x+4x+108

Answers

Answer:

Step-by-step explanation:

2x + 4x + 180

We have to do combine like terms.

2x and 4x are like terms, so add 2x to 4x. Which gives you 6x. Now you have the expres 6x + 180. You can’t find the variable for this expression, its unsolvable. If you meant, “2x + 4x = 180” Then yes, it would be solvable.

All you would have to do Is, 2x + 4x which gives you 6x, and now divide both side by 6. 6x divided by 6, the two 6 would cancel out, and 180 divide by 6, leaving you with 30. So x should equal to 30.

Determine the slope of the line given two points (-3 -1) and (5,-5

Answers

Answer:

-1/2

Step-by-step explanation:

y2 - y1 / x2 - x1

-5 - (-1) / 5 - (-3)

-4/8

= -1/2

Find the value of f (-6)

Answers

Answer:

4?

lol

Step-by-step explanation:

ASAP plz!!!
Help help help help help and explain plz

Answers

Answer:

AAS

Explanation:

The angles come first in that triange and then the side

pls answer this...thank you​

Answers

Answer:

I can't answer this I cant read that sloppy handwriting

Solve the system of equations
3x – 2y + 4z = -14
-4x + y + 4z = -16
-3x - y - 4z = 2

Answers

Answer:

x,y,x = 2,4, -3

Step-by-step explanation:

Yolanda was standing on the middle step of a staircase, painting a wall.She went up four steps to touch up a spot, then she went down five steps to continue painting. When she finished everything within reach,she went down six steps to the first step. Which step was the middle step. How many steps were there in the staircase. Use backwards working​ plzzzz answer i would rate 5 stars.plz help​

Answers

Answer:

hope this helps

sorry if it isn't what you're looking for

Step-by-step explanation:

(x+4)-5)-6 =1

combine the +4 and -5

x-7 =1

add 7 to both sides

x=8

Yolanda started on step 8

Carlos dropped the phone he had received for his birthday and broke the screen. He knows he has to pay for the replacement himself and does some research to find the lowest cost. He is trying to decide between two stores offering different deals on the same-priced phone.

Answers

Answer:

????????????????

Step-by-step explanation:

what's the question

help.................

Answers

Is there a answer D?

The hight increases 2.5 inches per second.

Answer:

The answer is the height of the water increases 2.5 inches per second.

Step-by-step explanation:

find the y intercept
y = 3/4x - 4

Answers

It is 8+783 to the 2 power
the y-intercept is the point on the graph where it crosses the y-axis, and has coordinates (0, b). It is also the value of y when x = 0.

To find the y-intercept, set x = 0:

y = -3/4(0) - 4

y = 0 - 4

y = -4.

Therefore, the y-intercept is (0, -4), or -4.
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