3x + 2y = 12 y = x - 9
solve by substitution

Answers

Answer 1
point form: (6,-3)
equation form: x=6, y=-3

Related Questions

Michael, who really likes to have a bag of chips with his lunch, is comparing chip prices at the store. He can buy a 10-pack of Double Cheese Crisps for $7.80 or a 15-pack of Cheddar Skins for $11.85. Which brand costs less per bag?

Answers

Answer:

10-pack of Double Cheese Crisps cost $7.80 cost less per bag

Step-by-step explanation:

Step one:

given

10-pack of Double Cheese Crisps cost $7.80

15-pack of Cheddar Skins cost $11.85

Required:

The unit cost per bag

Step two:

The unit cost of 10-pack of Double Cheese Crisps cost $7.80 is

7.8/10= $0.78

The unit cost of 15-pack of Cheddar Skins cost $11.85 is

11.85/15= $0.79

Answer:

double cheese crisps

50 points
The map shows ancient and modern cities on the Indian subcontinent.
A map titled Ancient and Modern Cities on the Indian Subcontinent. A key shows Ancient Indian civilizations with yellow dots and Modern Indian cities with purple dots. There are groups of yellow dots near the western coast and along the Indus River. The modern Indian cities of Mumbai and Chennai are along the coastline with Kolkata and New Delhi near rivers.

How do the locations of ancient and modern Indian cities differ?

a Ancient cities developed only in inland regions, while modern cities developed along the coast.

b Ancient cities developed in mountains, while modern cities developed along the Ganges River.

c Ancient cities developed along the Arabian Sea, while modern cities developed mainly on the Bay of Bengal.

d Ancient cities developed mainly along the Indus River, while modern cities developed near different bodies of water.

Answers

Answer:

D.

Step-by-step explanation:

Ancient cities developed mainly along the Indus River, while modern cities developed near different bodies of water.

Answer:

d

Step-by-step explanation:

Triangle ABC is similar to triangle DEC.








Find the value of x.

Answers

Answer:

5.6

Step-by-step explanation:

EC = 10

BC = 14

14/10 = 1.4

DE = 4

AB = x = 1.4 * 4 = 5.6

Answer:

[tex]\frac{x}{14} = \frac{4}{10}[/tex]  (set up as a proportion)

10x= 56 (cross multiply and then solve)

x= 5.6

Step-by-step explanation:

What is the solution of 5 = t/2 -3?

Answers

Answer:

t=16

Step-by-step explanation:

you have to change the numbers to get just the variable.

we start from -3.

5=t/2-3

8=t/2

(we multiply by 2 instead of dividing)

8×2=16

t=16

Solve.
The perimeter of a college athletic field is 100 meters and the length is 18 m more than the width
Find the length, width and area.

Answers

take the breadth as x and accordingly length as (x+18)

the formula for finding the perimeter of a rectangle is 2(l+b) now put the correct values as shown in the picture and form an equation this way you will be able to find x which is the breadth and length Is 18 morethan breadth ,now as u have found both length and breadth go ahead and find the area whose formula is length×breadth

HOPE IT HELPS

6 gas-powered toy cars cost $6,000. The cost of each car is the same. What is the cost of each car?

Answers

Answer:

1,000$

Step-by-step explanation:

1,000 x 6 = 6,000$ or 6,000 in math

Answer:

$1,000

Step-by-step explanation:

x = 6,000/6

x = 1,000

(3x^4-6x^2-9)*(10x^4-3x^2+7x)

Answers

30x
8
−69x
6
+21x
5
−72x
4
−42x
3
+27x
2
−63x

5. Seismologists use the Richter scale to measure the magnitudes and intensity of earthquakes that occur all over the earth. (see below, some info about Richter scales, and intensity formula)

Let’s say an earthquake hit Los Angeles, CA and had a magnitude of 3.4. If another earthquake hit Atlanta, GA and was a magnitude of 1.2, then how much more intense was the earthquake in LA?

Answers

Answer:

158.49

Step-by-step explanation:

10^(3.4 - 1.2) = 158.48931924611

round to 158.49

Find the median of the following set of data:100,40,200,20

Answers

20,40,100,200
40+100= 140/2
70
Answer: 70

Answer:

Median=(n+1/2)th item

Now,

4+1/2

=2.5

Again,

2nd item+(3rd - 2nd item) *0.5

40+(200-40)*0.5

40+160*0.5

40+80

120

Therefore, Median =120

Alma is choosing a new smartphone and cellular service plan. Let p be the phone’s price in dollars, m be the cost of the selected plan in dollars per month, and C be Alma’s total cost in dollars after time t, measured in months of service. Write an equation that expresses C in terms of p, m, and t. Then solve your equation for t.

Answers

The value of the expression for t will be

t = (C - p)/m

How to calculate the equation?

Let p = the phone’s price in dollars

m = the cost of the selected plan in dollars per month

C = Alma’s total cost in dollars after time t, measured in months of service.

Therefore, the equation that expresses C in terms of p, m, and t will be:

C = p + m(t)

To find t will be:

C = p + m(t)

Subtract p from both sides

C - p = m(t)

Divide through by m

t = (C - p)/m

Learn more about equations on:

brainly.com/question/13763238

#SPJ1

Put the steps of solving the equation in order from first to last.
2x + 1 = -1

Answers

Answer:

x = 1

Step-by-step explanation:

2x + 1 = -1

2x = -1 - 1

2x = -2

x = -2 ÷ -2

x = 1

Is ΔWXZ ≅ ΔYZX? Why or why not? Yes, they are congruent by SAS. Yes, they are both right triangles. No, the triangles share side XZ. No, there is only one set of congruent sides.

Answers

Answer:

Yes, they are congruent by SAS.

Step-by-step explanation:

Answer:

Yeah your answer would be A. Yes, they are congruent by SAS!

hope this helps :D

Step-by-step explanation:

Help If u can please show ur work thank you

Answers

Answer:

the answer is 21

Step-by-step explanation:

21x2 = 42, 42+3 = 45

Answer: 21 cupcakes

Step-by-step explanation: x is the number of cupcakes. since she baked 45 cupcakes on tuesday, which is 3 more than 2x the number of cupcakes on monday, we would write 45=2x+3. First, subtract the 3 from both sides of the equation. This will give you 42=2x. Then divide both sides by 2. This will give you 21=x. So, the answer is 21

ASAP PLZ HELP ME QIETH THE QUESTION

Answers

Answer:

58 square units

Step-by-step explanation:

Take the shaded figure as a full larger rectangle minus the rectangular part which is not shaded.

Area of the full larger rectangle:

Area = length × width

Length = |12 - 2| = 10 units

Width = |8 - 1| = 7 units

Area = 10 × 7 = 70 units²

Area of the unshaded small rectangle:

Length = |10 - 4| = 6 units

Width = |3 - 1| = 2 units

Area = 6 × 2 = 12 units²

Area of the shaded figure = 70 - 12 = 58 square units

Whats 39% as a fraction? Ik its 39/100 but is that the answer tho?

Answers

Answer:

Yes, 39/100 is the correct answer. You can't necessarily simpify it any further than that

Step-by-step explanation:

What is 48% of 120.

Answers

Answer:

57.6

Step-by-step explanation:

48% is the same as 0.48

so 120 * 0.48 = 57.6

The answer to 48% of 120 is 57.6

.:$$:$;&4&4’xkekekenfnejeidndndj HELPPP

Answers

Yes, it does. Usne ksheen

Answer: Yes

Step-by-step explanation: You can test whether a graph is a function by checking to see if the same X value is used twice. You can also use the Vertical line test to check aswell. Research Vertical Line Test if you are clueless. But Yes, this is a function

Worth 30 points. Help a homie out

Answers

Answer:

Multiply the second equation by -3 to get -3x - 9y = -30.

Step-by-step explanation:

When eliminating, you need to find a term with the negative of that term to combine so that they cancel each other out. An example would be 3x in the first equation and (-3x) in another equation so that when added, it becomes: 3x-3x = 0.

In the second equation, you see that there is already an x there and you just need to make it become (-3x). Thus, you multiply the entire second equation by -3 to make -3x. Once you have done that, you can combine the two equations and eliminate 3x from the first equation.

3x + 5y = 30

-3x - 9y = -30

3x + 5y -3x - 9y = 30 + (-30)

0 - 4y = 30 - 30

-4y = 0

You can find y and then x later on from here.

What is the quotient in simplest form? StartFraction 8 Over 3 EndFraction divided by two-thirds 0 StartFraction 9 Over 16 EndFraction 1 and StartFraction 7 Over 9 EndFraction 4

Answers

Answer:

D: 4

Step-by-step explanation:

Answer:

4th answer

Step-by-step explanation:

At a birthday party, there is a rubber ducky game for children to play. The goal of the game is to randomly pick a duck out the pool that has an EVEN number on the bottom of it. There are a total of 62 ducks and 40 of them have even numbers on them. approximately, what percentage of ducks have even numbers on them?

A. 65%
B. 40%
C. 35%
D. 60%

Answers

Answer:

A

Step-by-step explanation:

40/62=.645 then move the decimal over 2 spaces

Answer: 65

Step-by-step explanation: 40/62 = .645•100= 65

Find the coordinates of point b on ac such that the ratio of AB to BC is 2:1
A(2,-8)

C(-4,7)

Please help!!

Answers

Answer:

(-2, 3)

Step-by-step explanation:

the point B is

B(x,y)

x

AB (A to B) is twice BC ( B to C )

AB is 2 - x. BC is x - (-4)= x + 4

So

2-x=2 (x + 4)

2-x=2x + 8

3x = -6

x = -2

y

(Same logic as above)

AB is -5 -y. BC is u - 7

-5 -y = 2(y - 7)

-5 - y = 2y - 14

3y = 9

y= 3

the point is (-2, 3)

craig rose is an over-the-road truck driver. if he is paid $0.54 per mile, what is craig's total pay for the day he drove 527 miles?

Answers

Answer:

$284.58

0.54 x 527 is 284.58

Please help me! 30 points!

Answers

Answer:

Step-by-step explanation:

the in this picture is the 3rd one

1. Explain whether each following example is proportional or non-proportional.
(a)y=7x-3
(b)The graph is for b
(c) A gallon of milk costs $1.99. A half-gallon of milk costs $3.89.
(d)
x y
2 13
3 19.5
4 26
5 32.5

Answers

9514 1404 393

Answer:

  (a), (b), (c) are non-proportional

  (d) is proportional

Step-by-step explanation:

An equation or graph with a non-zero y-intercept is non-proportional. That is true for (a), (b), (c).

The table of (d) is proportional, with a constant of proportionality of 6.5.

__

Comment on (c)

In a proportional relation, price would go up with quantity, not down. If the prices both end in 9, one cannot be double the other, as would be required for the price of a gallon to be proportional to the price of a half-gallon.

Write y = 2/5 x+ 5 in standard form

Answers

Answer:

-2x + 5y = 25

Step-by-step explanation:

HELP!!!! WILL MARK BRAINLIEST!!!!!!

Answers

Answer:

2sqaured + 24

Step-by-step explanation:

please help and show work

Answers

Answer:

7a. 2x (The line rises by two units and runs (to the right) by 1 unit.)

7b. 3/4x The line drops by 3 units and runs (to the right) by 4 units.)

When Sebastian left his house in the morning, his cell phone battery was partially charged. The charge remaining in Sebastian's battery, as a percentage, can be modeled by the equation B=-9t+81, where t is the number of hours since Sebastian left his house. What is the slope of the equation and what is its interpretation in the context of the problem?

Answers

Answer:

The slope is -9

and the interpretation is that the percentage that drops on the battery per hour is 9%

Step-by-step explanation:

Generally, the equation of a straight line can be represented by the formula;

y = mx + b

where m is the slope and b is the y-intercept

With respect to the given equation, the slope is -9

What it means is that the percentage that drops per hour on the battery is 9%

Answer:

-9, the percentage charge that Sebastian's phone loses each hour

Step-by-step explanation:

Answer quickly please

Answers

Negative. The parentheses are negative and a negative which equals a positive. A positive (the 5) times a negative equals a negative!
answer:
negative
.......

onsider the line y=-5+6.
find the equation of the line perpendicular to this line and passes through the point (-2,-3)
find the equation of the is parallel to this line and passes through the point (-2,-3)​

Answers

Answer:

The equation of the line perpendicular to the given line is

[tex]y=\frac 1 5 x + \frac {-13}{5}[/tex].

The equation of the line perpendicular to the given line is

[tex]y=-5 x -13[/tex].

Step-by-step explanation:

The given line is y=-5x+6

The slope of the given line, [tex]m_1=-5[/tex]

Let [tex]y= m_2 x + C_2[/tex] be the slope of the line perpendicular to y=-5x+6,

where [tex]C_2[/tex] is constant.

As multiplication of slopes of two perpendicular lines equal to -1, so

[tex]m_1m_2=-1 \\\\\Rightarrow -5\times m_2= -1 \\\\\Rightarrow m_2= \frac {-1}{-5}= \frac 1 5[/tex]

So, the equation of the line perpendicular to the given line is

[tex]y=\frac 1 5 x +C_2[/tex] which passes through the point (-2,-3), so

[tex]-3=\frac 1 5 (-2) +C_2 \\\\\Rightarrow C_2 = -3 +\frac 2 5= \frac {-13}{5}[/tex]

Hence, the equation of the line perpendicular to the given line is

[tex]y=\frac 1 5 x + \frac {-13}{5}[/tex].

Now, let [tex]y=m_3 x +C_3[/tex] be the equation of the parallel line to y=-5x+6.

As the slopes of two parallel lines are the same, so [tex]m_3=-5[/tex].

So, the equation of the parallel line becomes

[tex]y=-5 x +C_3[/tex] which passes through the point (-2,-3), so

[tex]-3=-5 (-2) +C_3 \\\\\Rightarrow C_2 = -3 - 10 = -13[/tex]

Hence, the equation of the line perpendicular to the given line is

[tex]y=-5 x -13[/tex].

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