Solve Using Substitution
-9x + 6y = 18
y = -6​

Answers

Answer 1

Answer:

the answer should be x = -6

Step-by-step explanation:

-9x + 6y = 18

-9x + 6(-6) = 18

-9x - 36 = 18

-9x - 36 + 36 = 18 + 36

-9x = 54

-9x ÷ -9 = 54 ÷ -9

x = -6


Related Questions

Helpppppp ill mark as brainliest!!!​

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Surface areas and Volume.

Since Box A is cube, it's volume is Side^3

hence taking the cube root of 512 , we get as,

Side length of Box A is 8 m.

hence diving 8/2 = 4 m

4 m is a side of Box B.

hence, Volume of Box B is = (4)^3 = 64 cubic metres.

Vol. Box B = 64 m^3

Answer:

The correct answer is D: 64 meters cubed

Step-by-step explanation:

You can take any example but let's say 128 times 2 times 2 which equals box A, now you must divide all dimensions by 2 and you will get 64 times 1 times 1 which adds up to 64, this will work with any example.

10 points!!

Find the inverse of f(x) = √x-1

Answers

f

1
(
x
)
=
x
2
+
1
f
-
1
(
x
)
=
x
2
+
1

Answer:

Step-by-step explanation:

For a function to have an inverse, it has to pass the horizontal and vertical line test, yes both of them. This function does, so we can continue. The first step for finding an inverse is replacing f(x) with y. Then switch the places of x and y.

[tex]x=\sqrt{y-1}[/tex]

Now the next step is to solve for this new y value, which is equivalent to f^-1(x). Square both sides to get rid of the radical.

[tex]x^2=y-1[/tex]

Add 1 to both sides and that is your inverse function

[tex]y=x^2+1[/tex]

solve the equation below

-3 (x+7) =9

Answers

4x =9 i think that’s what it

Answer:

x=-10

Step-by-step explanation:

-3(x+7)=9

-3x-21=9

add 21 to both sides of equation

simplify divide both sides by like terms

simplify again and you have your answer

PLEASE HELP ME ASAP??!!
Find the missing side lengths using your notes on the 45-45-90 and 30-60-90 special triangles.

Answers

It says that there was an error with my answer, but I don't know what, so I screenshotted what I typed and attached them as 4 images below:

please help me quickly.

Answers

1 is 88, 2 is 90, 3 is 100 and 4 is 75

i have to find the value of x please help me will give brainliest to correct answer​

Answers

Answer:

C. x = 5

Step-by-step explanation:

48 = 7x + 13

-13           -13

35 = 7x

5 = x


Please answer both

Answers

Answer:

9) 5/10

10) 4/5

Step-by-step explanation:

A terminating decimal is a decimal that stops eventually

2/3 = 0.6666666...

5/6 = 0.833333...

5/10 = 0.5

6/9 = 0.6666666...

5/10 has a result of a terminating decimal

8/9 = 0.888888...

1/7 = 0.142857...

4/5 = 0.8

4/11 = 0.36363636....

gallon of gas: $2.15, 15% markup

Answers

The answer would be $2.47

My old account is h acked lol <3

Answers

..........Okay? Lol

Answer:

PUK me montoon are 8ii88iiii8

is -0.75 bigger or less than -0.4?

Answers

Answer:

Because they are both negative that means they are on the left side so -0.4 is closer to the 0 so less.

A local florist buys a dozen roses for x dollars. He plans to sell the roses at a 40 % mark-up. What expression shows the selling price of the one dozen roses?

Answers

Answer:

1.40x I think :)

How do you solve fractions and multiplication in algebraic, ex:1/3× -4​

Answers

Answer: x=12

Step-by-step explanation:

1/3 x -4

1/3x=4               <---- First add 4 to each side of the equation (moves the "-4")

1/3x(3)=4(3)     <---- Muliply each side by "3" to get rid of the fraction

x=12

I need help!!! BADLY

Answers

Answer:

118 degrees

Step-by-step explanation:

Opposite angles always have the same angle measure.

Find the 101th term in the arithmetic sequence -3,-5,-7,-9,-11

Answers

The answer would be 95

Brain Teaser
> Solve this riddle.
I am an even factor of 24.
I have only 2 factors.
Which number am I?

Answers

Answer:

You're the number 2.

Step-by-step explanation:

2 is even, is a factor of 25, and only has the factors 1 and 2.

Answer:

Its 2.!!!

Well no need for step- by- step explanation cuz only two has 2 factors. LOL!!

Hope it helped!!!

help me this is due this period please please ill mark brainiest with a bunch of points.

Answers

Answer:

(-4,1)

Step-by-step explanation:

The answer is just where the two lines intersect

I'm rather tired so double check me on this but I'm getting about (-4,1) and it's asking for an approximation so think (-4,1) is fine

Answer:

It's around (-4. 5, 1.5). It's somewhere in that range.

Some number added to -12 is 36. Add this number to -15. Then multiply this
number by 2. What is the final number?

Answers

x-12=36
x=48
48-15=33
33 times 2 is 66

Factoring.

The answer is supposed to look like this.

EXAMPLE:

5x(6x+2)(6x-2)

Answers

Step-by-step explanation:

2y×(5-4y)×(5+4y) here you go now please help me if you can

Determine the value of x to form equivalent fractions 4/5 = x/30
4
24
5
10

Answers

the answer to this is 24

What's the additive inverse of 0.75.

Answers

Answer:

[tex]additive \: inverse = - 0.75[/tex]

Mary and Alice are playing a card game. Mary has 21 points. She has 9 points less than Alice.

How many points does Alice have?

Enter your answer in the box.


_______ points

Answers

I think Alice would have 30 points since 21 plus 9 is 30

Answer:

30

Step-by-step explanation:

I love math its my fav subject. Facts: P:21+9=30. The check, 30-9=21.

HELP HELP HELP HELP The answer is not 34.5 or 124.5

Answers

Answer:

x=37, Angle A is 74. Exterior angle B is 185

Step-by-step explanation:

I'm pretty sure this right but This is a triangle that is folded to the inside. This means that most likely there is a negative interior degree

angle. Using the interior theorem, we can add up all the non adjacent sides to find the exterior angle of the adjacent side. 79+2x+32=5x, 2x+111=5x, 111=3x, x=37. Then plug 37 in for x Angle A is 74 degree and B exterior angle Is 185 degree.

-2x+4y=40 find the y intercept and find the x intercept

Answers

1. (-20,0)
2. (0,10)

what is 5.5% of $24.9

Answers

Answer:

1.3695 US$

Step-by-step explanation:

Answer:

1.37

Step-by-step explanation:

First, convert the percent (5.5%) to a decimal by dividing it by 100 and you get 0.055 After this you multiply 0.055 by 24.9 and get 1.37

Increase £490 by 11% give your answer rounded to 2 DP

Answers

Step-by-step explanation:

Given \:number (m) = £ 490Givennumber(m)=£490

Increase (g) = 11\%Increase(g)=11%

\begin{gathered} \red{ Required \:number } \\= m\Big( \frac{(100+g)}{100} \Big)\\= 490\Big(\frac{100+11}{100}\Big)\\= 490 \times \frac{111}{100} \\= 490 \times 1.11 \\= £ 543.9 \end{gathered}

Requirednumber

=m(

100

(100+g)

)

=490(

100

100+11

)

=490×

100

111

=490×1.11

=£543.9

Therefore.,

\red{ Required \:number }\green { = £ 543.9}Requirednumber=£543.9

•••♪

Answer:

£543.90

Step-by-step explanation:

You have to add 2 and nothing

find an Equation for the perpendicular bisector of the line segments whose in points are (8,3) and (2,-7)

Answers

y = -0.600x + 1
(I’m not 100% sure but I think this is it!)

I don’t understand this at all please help

Answers

(-2,3) you go over to the left 3 and down 2
Take the points that the three dots are on (remember over, then up) take the x from each of the three dots and plug it into the formula. So for example p=(-5,5) (-5+3)(5-2) and then put those answers into new chordates so -5+3 equals your first number (-2) and 5-2 is your second (3) and smash them together (-2,3)

help meee pleaseeeeee

Answers

Answer:

5[tex]\sqrt{7}[/tex]

Step-by-step explanation:

Answer:

No ablo inglés.......

Step-by-step explanation:

ajaja

I urgently need help!!!!

Answers

Answer: 2m, m

Hope this helps.

A male polar bear is 2 7/9 meters long. A female polar bear is 1 5/6 long. Sidney thinks the male polar bear is 1 2/3 meters longer than the female polar bear. She is incorrect. How did she get that answer?

Answers

Answer: See explanation

Step-by-step explanation:

The difference in the length of the polar bear will be:

= 2 7/9 - 1 5/6

The lowest common multiple of 9 and 6 is 18.

= 2 7/9 - 1 5/6

= 2 14/18 - 1 15/18

= 17/18

She is incorrect as she subtracted the denominator from the numerators and didn't find their lowest common multiple. She got the answer this way:

= 2 7/9 - 1 5/6

= (2 - 1) (7-5)/(9-6)

= 1 2/3

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