Solving systems of equations using substitution y = 5x + 17. y= -2x -4

Answers

Answer 1

Answer:

(-3,2)

Step-by-step explanation:

Answer 2
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
(

3
,
2
)
(
-
3
,
2
)
Equation Form:
x
=

3
,
y
=
2

Related Questions

Liam is setting up folding chairs for a meeting. If he arranges the chairs in 8 rows of the same length, he
has 7 chairs left over. If he arranges the chairs in 6 rows of that same length, he has 23 left over. How many
chairs does Liam have?

Answers

Answer:

liam has 44 chairs with him

Answer:

liam has 71 chairs

hope it helps you


How many ways can you factorise 24k + 167

Answers

Answer:

[tex]1)by \: splitting \: middle \: term \\ 2)factorisation \\ .......[/tex]

2. Tadashi and his friend Abel make 18 dumplings. Tadashi eats one third, and Abel eats the rest. How many dumplings did Abel eat?​

Answers

Answer:

12

Step-by-step explanation:

18/3=6

so Tadashi ate 6 dumpling; the other 12 Able ate

Answer:

12

Step-by-step explanation:

Sine Tadashi eats one third, you have to divide the total amount of dumplings by three.

18/3=6

Tadashi eats 6 dumplings, so to find out how many Abel eats you have to subtract 6 from the total number of dumplings.

18-6=12

Abel ate 12 dumplings

Use Sin Cos Tan to find the indicated angle ​

Answers

Use Pythagoras theorem:
It can be used in any right triangle
Angle = arcsin(10/39) ≈ 14.9°

write 3^n/9^(n-1) as a power of 3

Answers

Answer:

[tex]\frac{3^{n} }{3^{2(n-1)} }[/tex]

Step-by-step explanation:

3²⁻ⁿ is the simplification of  3ⁿ/9ⁿ⁻¹ in powers of 3.

What is Expression?

An expression is combination of variables, numbers and operators.

The given expression is  3ⁿ/9ⁿ⁻¹

three power n divided by nine power n minus one.

To express to the power of 2, we have few properties of exponentials.

aˣ/aⁿ=aˣ⁻ⁿ

aˣ.aⁿ=aˣ⁺ⁿ

The given expression is

3ⁿ/9ⁿ⁻¹

3ⁿ/(3²)ⁿ⁻¹

3ⁿ/3²ⁿ⁻²

3ⁿ.3⁻²ⁿ⁺²

When bases are same then we will add the powers

3ⁿ⁻²ⁿ⁺²

3²⁻ⁿ

Hence 3²⁻ⁿ is the simplification of  3ⁿ/9ⁿ⁻¹ in powers of 3.

To learn more on Expressions click:

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Please do number 8 for me.

Answers

Answer:

u do 14 x 8 then + 78 then x = your answer

Step-by-step explanation:

sorry I dont have a calculator near me but just put that in!!!

X=13 | 8x+2=14x-76 —> 78=6x —> 78/6=x —> 13=x

When 27 times x squared times z all over negative 3 times x squared times z to the fourth power is completely simplified, the exponent on the variable z is _____.
Numerical Answers Expected!
I have attached a picture of the problem so it's easier to read.

Answers

Step-by-step explanation: Isolate z by itself:

To simplify variables with powers, subtract the smaller power from the bigger power:

The exponent will be -3

How do you solve for x ?​
please dont respond just for points

Answers

Answer:

X is 110cm

Step-by-step explanation:

35degrees plus 90degrees equals 125degrees

So 125-15=110cm

Omg I’m so sorry I forgot to put this question on

Answers

Answer:

Cameroon

Step-by-step explanation:

Hope it Helps!

:)

3/13 as a decimal rounded to the nearest thousandth

Answers

Answer:

0.231

Step-by-step explanation:

Answer:

3/13 round to the nearest thousandth is 0.231

Step-by-step explanation:

If you subtract 27 from 5 times the mystery number you get 83.

Answers

Answer:

Step-by-step explanation:

say that mystery number is x

5*x-27=83

5*x=83+27

5*x=110

x=22

Answer:

22

Step-by-step explanation:

5x-27=83

           +27

5x=110

x=110/5

x=22

Someone please help me quick! Pleaseee

Answers

Answer:

B

Step-by-step explanation:

Reflect x-axis means (x,y) becomes (x, -y)

Shrink by 1/3 means f(x) = x becomes f(x) = 1/3x

Up 4 units means f(x) = x becomes f(x)= x + 4

So lets put that together

[tex]f(x) = \sqrt{x}[/tex]

[tex]f(x) = -\sqrt{x}[/tex]

[tex]f(x) = -\frac{1}{3} \sqrt{x}[/tex]

[tex]f(x) = -\frac{1}{3} \sqrt{x} + 4[/tex]

16 cm 44.2 cm in percent
PLSS HELP!!

Answers

176.25% increase. Give brainlist

Pablo uses 12.5 cups of flour to make 5 batches of muffins. How many
cups of flour did he use per batch?

2.5 cups
25 cups
2 cups
65 cups

Answers

Answer:

2.5 cups

Step-by-step explanation:

12.5÷5=2.5 cups

hope that helped :)

is is 2.5 cups per batch

Can someone answer this please: 37.3 rounded to the nearest integer

thank you <3​

Answers

Answer:37

Step-by-step explanation:

rounding to the nearest integer is what is in the tenth place so .1 is in the tenth place so 37.3 rounded to the nearest tenth place would be 37

Please help it’s so difficult

Answers

Answer:

y = x/2 +4

Step-by-step explanation:

new slope = -1/-2 = 1/2

x1 = -4, y1= 2

y-y1 = m(x-x1)

y - 2 = 1/2 {x- (-4)}

y-2 = 1/2 (x+4)

y-2 = x/2 + 2

y = x/2 +2+2

y = x/2 +4

Orlando earns 32$ in allowance each week. He saves 3/8 of it and spends the rest. How much does he save?


Please help its due very soon

Answers

Answer:

12$

Step-by-step explanation:

Money =  32$

Fraction he saved = 3/8

Amount he saves = 3/8 x 32 = 12 $

\

\

I hope  im right!!

What is the slope of the line that passes through the points (-5, -7) and (4,−1)? in the simplest form

Answers

Answer:

2/3

Step-by-step explanation:

Use rise over run, (y2 - y1) / (x2 - x1)

Plug in the points, then simplify:

(y2 - y1) / (x2 - x1)

(-1 + 7) / (4 + 5)

6/9

= 2/3

So, the slope of the line is 2/3

Given the Standard Form equation y - 6x = 4
What is the slope and y intercept?
someone plz explain

Answers

Answer: 6 is the slope and 4 is the y-intercept.

Step-by-step explanation:

Based on the question, I feel this is the best way to answer your question.  I'm assuming you are in a basic graphing class.

The best, most useful thing for you right now would be to learn slope-intercept form, y = mx + b, where m and b are constants.

Simply add 6x to both sides to get into this form

y = 6x + 4.

In slope-intercept form, m is the slope, and b is the y-intercept.  Thus, 6 is the slope and 4 is the y-intercept.

Hope it helps and lmk if you need more <3 :)

15 - 3x = 11 - 3x + 4​

Answers

Answer:

Infinitely Many Solutions!

Steps I used to get the answer :

1. Cancel -3x−3x on both sides.

15=11+4

2. Simplify  11+4 to  15.

15=15

3. Since both sides equal, there are infinitely many solutions.

Infinitely Many Solutions!

Done by NeighborhoodDealer.

Answer:

Step-by-step explanation:

Solve for x:

15 - 3x = 11 - 3x + 4

Subtract 4 from both sides

15 - 3x - 4 = 11 - 3x + 4 - 4

11 - 3x = 11 - 3x

This equation has infinite solutions since both sides of the equation are equal.

The ratio of Ali's to Beth's score is 5:3. Ali
scored 10 more marks than Beth. Clare scored
7 more than Ali. Find the score of all three.

Answers

Answer:

Ali 25

Beth 15

Clare 32

Step-by-step explanation:

Here, we want to get the score of the three

let Ali’s score be x

He scored 10

more than Beth; Beth score will be x-10

Let us now work with the ratio

x/x-10 = 5/3

3x = 5(x-10)

3x = 5x - 50

5x-3x = 50

2x = 50

x =

50/2

x = 25

Beth will

score 25-10 = 15

score had 7 more than Ali,

25 + 7 = 32

WILL GIVE BRAINLIEST, PLEASE HURRY.

In science class, students added vinegar to a solution to try to reach an acidic pH. Eduardo added 1/3 of a cup vinegar to his solution. Violent added 3.75 times the amount Eduardo used. How much vinegar did Violet add to her solution?

A. 3 3/4 cup
B. 1 1/4 cup
C. 1 cup
D. 1/3 cup

Answers

Answer:

B. 1 1/4 cup

Step-by-step explanation:

1/3 times 3 3/4 gives you 1 1/4! Hope that helps!

Answer:

Step-by-step explanation:

11/4

ez as pie

Given the functions f(x) = x ^ 3, g(x) = 9 and h(x) = 2x , what is an expression equivalant to f(2x) + 3g(x)/h(x) + 3?

Answers

Answer:

an expression equivalent to f(2x) + [tex]3\frac{g(x)}{h(x)}[/tex] + 3 = 8x³ + [tex]\frac{27}{2}x[/tex] + 3

Step-by-step explanation:

As given ,

f(x) = x³ , g(x) = 9 , h(x) = 2x

Now,

f(2x) = (2x)³ = 2³.x³ = 8x³

⇒f(2x) = 8x³

Now,

[tex]\frac{g(x)}{h(x)} = \frac{9}{2x} = \frac{9}{2}x[/tex]

⇒[tex]3\frac{g(x)}{h(x)} = 3.\frac{9}{2}x = \frac{27}{2}x[/tex]

∴ we get

f(2x) + [tex]3\frac{g(x)}{h(x)}[/tex] + 3 = 8x³ + [tex]\frac{27}{2}x[/tex] + 3

Which sequence of transformations could be used to map triangle MNO onto M”N”O”?

O T(-2,4) ° ry-axis
O ry-axis •T(-2, 4)
O T(2,-4) • R0,180 degrees
O R0.180 degrees T(2,-4)

Answers

Answer:

Option D

Step-by-step explanation:

I dont really know but i think its D

Answer:

a

Step-by-step explanation:

i need help with these assignments anybody willing to help? ! must include ratio tables! and i only need to do question 4

Answers

Answer:

4.a

Step-by-step explanation:

hope it helps



James has x sweets. Tom has 5 more than James. Write an expression for the number of sweets
Tom has. * O
(1 Point)

Answers

Answer:

X+5=y

y=Tom.

X=James

hope it helps

Answer:

number of sweets Tom has = x+5

Solve each system by substitution.
y=-4x-9 y=3x+19

Answers

Answer:

x=-4, y=7

Step-by-step explanation:

According to the first equation, y = -4x - 9, so we can substitute y in the second equation for -4x - 9.

y = 3x + 19

-4x - 9 = 3x + 19

Add 9 to both sides

-4x = 3x + 28

Subtract 3x

-7x = 28

Divide by -7

x = -4

Plugging this into the equation, we have:

y = -4x - 9

y = -4(-4) - 9

y = 16 - 9

y = 7

Marissa is walking along the beach and finds an unknown organism on the shore it has radical symmetry a nonporous surface and tentacles in which phylum can the organism be classified a.chordata b.Cnidaria c.echinodermata d.porifera

Answers

this is not math ? it’s physics or chem or bio or something

the function 8x^2-9x-148x 2 −9x−14 divided by x-2x−2

Answers

Answer:

8x + 7

Step-by-step explanation:

8x² - 9x - 14  divided by x - 2

(8x² - 9x - 14)/(x - 2)(8x² - 16x + 7x - 14)/(x - 2)=(8x(x - 2) + 7(x - 2))/(x - 2) =8x(x - 2)/(x - 2) + 7(x - 2)/(x - 2) =8x + 7

Which expression is equivalent to

27x^2-72x/9x?

Assume that the denominator does not equal zero.

Answers

The expression that is equivalent to 27x² - 72x/9x is 3x - 8

How to determine the equivalent expression?

The expression whose equivalence is to be determined is given as

27x^2-72x/9x

The above expression can be properly expressed as follows

27x² - 72x/9x

Introduce the use of brackets

So, we have

(27x² - 72x)/9x

Factor out x from the numerator

This gives

(27x² - 72x)/9x = x(27x - 72)/9x

Cancel out the common factor

(27x² - 72x)/9x = (27x - 72)/9

Factor out 9 from the numerator

This gives

(27x² - 72x)/9x = 9(3x - 8)/9

Cancel out the common factor

(27x² - 72x)/9x = 3x - 8

Hence, the equivalent expression is 3x - 8

Read more about equivalent expression at

https://brainly.com/question/15775046

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