Solving system of equations by substitution!


Please help :'(

Solving System Of Equations By Substitution!Please Help :'(

Answers

Answer 1

Answer:

x=-3

Step-by-step explanation:

because in the first equation it is saying that 4x+5 is also equal to the second equation, -1/3x-8. then you would do -1/3x-8=4x+5, then(letters to the left) -4x on bothe sides,which then you get -13/3x-8=5, then +8 on both side, then you get -13/3x=13, last you divied by -13/3 and youj get x=-3


Related Questions

Ur amazing if u understand bearings

Answers

Sam's "bearing" is simply the direction in which he's moving, which is the angle made with due East.

From point A to point B, his bearing is 335°, and from point B to C, his bearing is 45°. In both cases, the angle is made with due East from the second point. See the sketch for a rough approximation of this. Note that it is not to scale.

To get it into scale, you have to compute the distances traveled along each bearing.

• Moving at 6 km/h for 20 min = 1/3 h would cover a distance of

(6 km/h) • (1/3 h) = 2 km

• Moving at 10 km/h for 15 min = 1/4 h would mean a distance of

(10 km/h) • (1/4 h) = 2.5 km

In your sketch, 1 cm should represent 500 m = 0.5 km, so the arrow from A to B should have a length of 4 cm, while the arrow from B to C should have a length of 5 cm.

Justify whether the equation y=9x−4 defines a linear or nonlinear function.

Answers

Answer:
Linear

Explanation:
A non linear function would have a squared term

Which of the sets of ordered pairs represents a function? (5 points)

A = {(2, −2), (5, −5), (−2, 2), (−5, 5)}
B = {(4, 2), (4, −2), (9, 3), (9, −3)}

Group of answer choices

Only A

Both A and B

Neither A nor B

Only B

Answers

Answer:

Both a and b

Step-by-step explanation:

Determine the rate of change from the table below: ​

Answers

Answer:

Plus 4 miles every 2 hours

Hours= +2

Miles= +4

A line has a slope of -
and a y-intercept (vertical intercept) of 9.

Answers

The first one is correct you take the slope and multiple it by x and then add or subtract your y intercept depending on whether it is positive or negative. In this case it's positive so it would by -3/7x+9

Does anyone know the answer to this??

Answers

last one i believe is the answer

A recipe for 2 dozen of Mr.M’s cookies calls for 2 1/2 cups of chocolate chips. He is making 6 dozen cookies. How many cups of chocolate chips does he require? Simplify you answer

Answers

24a=2.5
a=(5/48)
y=(5/48)x
y=(5/48)*72
y=7.5 or (15/2)

Question 24
In A DEF, the bisector of ZF divides the opposite sides into segments that are
4 and 9 in. long. The side of the triangle adjacent to the 4 in segment is 6 in.
long. To the nearest tenth of an inch, how long is the third side of the triangle?
A.13.5
B.27
C.6
D.13

Answers

Answer:

1).

Sqrt (7 x 12) = 9.165

2).  

Altitude = Sqrt (14 x 8) = 10.583

3).  

If FG is the angle bisector of angle F in triangle DEF,

DF/EF = DG/EG

6/EF = 4/9

EF = 13.5 in long.

4).  

In triangle QRS, XY is parallel to SR.  

SX/XQ = RY/YQ

3/2x = 4.5/7.5

9x = 22.5

x = 2.5

The length of QS

= SX + 2x  

= 3 + 5

= 8

did this help sorry if it didnt

Step-by-step explanation:

Nora has an orange rope and a green rope. The orange rope is 9 meters shorter than the green rope. The green rope is 12 meters long. How many meters of rope does Nora have in all?

Answers

Answer:

15 m

Step-by-step explanation:

12-9=3 meters of orange rope

so 3 m of orange + 12 m of green

15m in total

Answer

nora has 15 meters

Step-by-step explanation:

12 minus 9 is 3 so u have to add 3

24 is 31.25% of what number?

Answers

Answer:

76.8

Hope this helps :)

Write an equation in slope intercept form for the line that passes through
(1.8) and (2,11).
Can some one help me I’m in the middle of doing a test and I need the answers

Answers

Use the y2-y1/x2-x1


11-1/2-8

help me please also answer the question correctly

Answers

Answer:

he needs 10 c

Step-by-step explanation:

Jorge needs 10 large c because 6 large salads need 10 tomatoes

He needs 10 so c yes that’s c

Directions: Determine how much Marco would be paid
for 10 weeks work.
Marco is initially paid $75 per week and then 2.5%
more each week than the previous week.

Answers

Answer:

766.87 is how much he is paid in all.

Step-by-step explanation:

2.5% of 75 is 1.875. 1.875 times 9 is 16.875. 75 times ten is 750. add together to get the whole.

In 10 weeks she will be paid a total of $840 with 2.5% more each week.

What are arithmetic and geometric sequence?

An arithmetic sequence is a set of numbers in which every no. next to the previous number has the same common difference

d = aₙ - aₙ₋₁ = aₙ₋₁ - aₙ ₋₂.

In a geometric sequence numbers are written in the same constant ratio(r).

It means every next number is a multiple of a common constant and the previous number.

r = aₙ/aₙ₋₁ = aₙ-₁/aₙ₋₂.

Given, a = 75 and r = 1.025.

We know the sum of a geometric sequence is Sₙ = a(rⁿ - 1)/(r - 1).

∴ S₁₀ = 75(1.025¹⁰ - 1)/(1.025 - 1).

S₁₀ = 75(1.28 - 1)/(0.025).

S₁₀ = 75(0.28)/0.025.

S₁₀ = 840.

learn more about geometric sequence here :

https://brainly.com/question/11266123

#SPJ2

A custodian plans to repaint some classroom bookcases. She has 6 1/4 gallons of paint. All of the bookcases are the same size and each requires 2/3 gallon of paint. How many bookcases will the custodian be able to repaint with that amount of paint?

Answers

Answer:

9

But i'm not entirely sure.

Roger restores vintage automobiles. The number of automobiles Roger has restored, f, after n number of years can be described by the equation f(n)=2+5n. What is the rate of change in this situation?

Answers

Answer:

The change of rate of the situation is 5.

Step-by-step explanation:

Given f(n) = 2 + 5n. The rate of change is still the same as the slope of the equation. We know that the equation of a line is given as:

f(x) = y = mx + c where m is the slope. In our given equation, f(n) = 2 + 5n = 5n + 2, we see that m = 5 which is our slope.

Therefore, the change of rate of the situation is 5.

Please Help Asap Best Answer Gets Brainliest

Answers

Answer:

food 702, transportation 612, utilities 270, other 216

Step-by-step explanation:

whats 8 squared + 15 squared = 17 squared

Answers

Answer:

289=289

Step-by-step explanation:

[tex]8^{2}[/tex]+[tex]15^{2}[/tex]=[tex]17^{2}[/tex]

64+[tex]15^{2}[/tex]=[tex]17^{2}[/tex]

64+225=[tex]17^{2}[/tex]

289=[tex]17^{2}[/tex]

289=289

Complete the tables of values.
4-*
-1
4
0
a
2
b
4
с
a
b=
C=

Answers

Answer:

a=1

b= 1/16

c=1/256

Step-by-step explanation: took edge

Simplify the expression:
25-[8-(6-10)]+[(1-3)]^3

A. -21
B. 29
C. 21
D. 5

Answers

Answer:

D 5

Step-by-step explanation:

when you simplify

Answer:

2719

Step-by-step explanation:

25-{8-(6-10)+{(1-3)}^3

25-{8-(-4)+(-2)^3

25-{-12+(-2)}^3

25-{-14}^3

25-2744

2719

five and one ninth minus two and three fourths quick pls

Answers

Does this help. Also don’t mine the light it’s the pixels moving across the screen. Spooky right???

What is 0.00000078 is sceintific notaion

Answers

So just do=
.
7.8 • 10^-7

[tex]7.8 \times {10}^{ - 7} [/tex]

can someone help me with this please?!!

Answers

Answer: X

Step-by-step explanation: Because look at the chart

Answer:

It’s b

Step-by-step explanation:


What is the value of the exponential expression 3,3
A. 18
B. 27
C. 9
D. 81

Answers

Answer: B. 27

Step-by-step explanation:

3x3 = 9

9x3 = 27

3^3 = 27

Answer:

c. 9

Step-by-step explanation:

3,3

3*3

3 square

9

Identifying factors

Answers

I need points lol thanks

The county fair is a popular field trip destination. This year the senior class at High
School A and the senior class at High School B both planned trips there. The senior
class at High School A rented and filled 10 vans and 13 buses with 660 students. High
School B rented and filled 9 vans and 6 buses with 366 students. Every van had the
same number of students in it as did the buses. How many students can a van carry?
How many students can a bus carry?

Answers

A bus can carry 59 students while a van can carry 18.

It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data.
Which expression can be used to represent the cost of a cell phone bill when x is the number of GB of data used?
will give brainliest

Answers

Answer:

( 10 × x ) + 30

Step-by-step explanation:

This equation would represent the phone bill because you would have to multiply the GB (x) by 10 before adding it to 30 to find the total amount of money.

plz mark me brainliest if correct

The cost of cell phone is represented by expression, [tex]C=10x+30[/tex]

Total cost :

It is given that,

It costs 30 dollars per month for a cell phone plus 10 dollars for every GB of data.

Let us consider that x is the number of GB of data used.

The cost of cell phone is represented by,

                    [tex]C=30+(10*x)\\\\C=10x+30[/tex]

Thus, the cost of cell phone is represented by expression, [tex]C=10x+30[/tex]

Learn more about algebraic expression here:

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Write the equation in the point-slope form given the points (-5,-4) (3,4)

Answers

The point- slope form is y+4=1 • (x+5)

I need help with this question

Answers

Answer:

34cm

Step-by-step explanation:

bc i konow

Answer:

no, a right angle is 90 degrees. it isn't.

Step-by-step explanation:

the bottom left angle should look like this:  L, which it doesn't.

A total of 754 tickets were sold for the school play. They were either adult tickets or student tickets. There were 54 more tickets sold than adult tickets. How many adult tickets were sold?

Answers

Answer:

Answer: 350

Step-by-step explanation:

Explanation:

a = adult tickets

s = student tickets

║ a + s = 754

║s = a + 54

Plug s = a + 54 into a + s = 754

a + (a + 54) = 754

a + a + 54 = 754

2a + 54 = 754

2a = 754 - 54

2a = 700

a = 350

Which row in the table is the right answer for the system of equation

Answers

I think it's a pretty sure

I think the answer is A!
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