cb-b; use b = - 3, c = - 1​

Answer:

x= -3, y= 13

Step-by-step explanation:

The idea is that x and y in both equations are the same numbers and that the equations are like rules that need to be followed both in the same time.

We take the y from one equation and use it in the other equation because is the same y .

3x+y =4 , subtract 3x from both sides

y=  -3x+4

2x+y =7 , substitute y with the y = -3x+4 from the first equation

2x -3x+4 = 7, subtract 4 from both sides

2x-3x = 7-4, combine like terms

-x = 3  so x = -3

We know that x= -3 so we can substitute it in y= -3x+4 to find y

y=  -3x+4

y= -3 (-3) +4

y= 9+4 = 13

y= 13

Step-by-step explanation:

1)8x-2x=35-17

6x=18

x=18/6

x=3

2)7k-2k=-37-8

5k=-45

k=-45/5

k=-9

3)m-9m=-13-3

-8m=-16

8m=16

m=16/8

m=2

4)-4y+3y=12-6

-y=6

y=-6

5)6a-2a=-40

4a=-40

a=-40/4

a=-10

6)5w+2w=55+29

7w=84

w=84/7

w=12

7)5p-13p=-43+11

-8p=-32

8p=32

p=32/8

p=4

8)-c-5c=-2+50

-6c=48

c=-48/6

c=-8

Answer:

Step-by-step explanation:

24 eggs = 10 dollars

3 loafs of bread for 5 dollars each x 3 = amount together so 15

5x8=40 dollars for all drinks, so

10+15+40

Hey there! I'm happy to help!

First, we have our eggs, which cost $10

10

Then, we have our 3 loaves of bread. Each one costs $5. 5×3 is 15, so we will add this to our total.

10+15

And then we have our 5 drinks, each costing $8. 8×5 is 40, so we will add 40 to our total.

10+15+40=65

So, we need $65 dollars to go out shopping.

Have a wonderful day and keep on learning! :D

[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]

[tex] \large \bf\frac { 5 - 3 i } { - 2 - 9 } \\ [/tex]

Subtract 9 from -2 to get -11.

[tex] \large \bf \: Re(\frac{5-3i}{-11}) \\ [/tex]

Divide 5-3i by -11 to get [tex]\sf-\frac{5}{11}+\frac{3}{11}i \\ [/tex].

[tex] \large \bf \: Re(-\frac{5}{11}+\frac{3}{11}i) \\ [/tex]

The real part of [tex]\sf-\frac{5}{11}+\frac{3}{11}i \\ [/tex]is [tex]\sf-\frac{5}{11} \\ [/tex].

[tex] \large \boxed{\bf-\frac{5}{11} \approx -0.4545..} \\ [/tex]

Answer:

[tex] \frac{5 - 3i}{ - 2 - 9} \\ = \frac{ 5 - 3i}{ - 11} \\ = \frac{5}{ - 11} + \frac{3i}{11} \\ thank \: you[/tex]

Answer:

x + 7

Step-by-step explanation:

Answer:

-16

Step-by-step explanation:

7)

y= mc+c ------gradient formula

y: y-intercept

m: gradient

c: y-axis

y= -2(6)+(-4)

= -12-4

= -16

The median of that data set is 9.

Sort the numbers from least to greatest and find the middle number (that should be your median)

If there are 2 numbers in the middle of the set, then you take the average and that would be your median.

Answer:

The answer is 14.28cm

Answer:

D. quadratic; y = 2.5x2

Step-by-step explanation:

Answer:

A. quadratic; y = 2.5x2

Step-by-step explanation:

Answer:

Option (1)

Step-by-step explanation:

x               -2              -1                 0                    1                   2

y               10            2.5                0                  2.5                3.0

Ist difference,

   = -2.5

  = 2.5

  = 7.5

2nd difference,

   = 5

  = 5

  = 5

Since 2nd difference is common, given table represents a quadratic equation.

Let the equation is,

y = ax²+ bx + c

For a point (0, 0) passing through the quadratic equation,

0 = c

Therefore, quadratic equation is y = ax² + bx

Since ordered pair (-1, 2.5) passes through the graph of the function,

2.5 = a(-1)² + b(-1)

a - b = 2.5 ------(1)

For another point (1, 2.5)

2.5 = a(1)² + b(1)

a + b = 2.5 ------(2)

By adding equations (1) and (2),

2a = 5

a = 2.5

and from equation (2)→ y = 0

Therefore, equation of the quadratic function given in the table is y = 2.5x²

Option (1) is the answer.

Given the function w:

[tex] \displaystyle \large{w(x) = {x}^{2} + 1 }[/tex]

Since we want to find w(x+3), the input would be x+3.

Substitute x = x+3 in.

[tex] \displaystyle \large{w(x + 3) = {(x + 3)}^{2} + 1 }[/tex]

Alternate Solution

The answer above works if you want it in vertex form. For this alternate solution, I will convert the function in standard form.

As we know:

[tex] \displaystyle \large{ {(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2} }[/tex]

Therefore:

[tex] \displaystyle \large{ {(x + 3)}^{2} = {x}^{2} + 2(x)(3) + {3}^{2} } \\ \displaystyle \large{ {(x + 3)}^{2} = {x}^{2} + 6x+ 9}[/tex]

Now for function w:

[tex] \displaystyle \large{w(x + 3) = {x}^{2} + 6x + 9+ 1 } \\ \displaystyle \large{w(x + 3) = {x}^{2} + 6x + 10}[/tex]

Hence:

Answer:

I will help ukshagaakavlabsbakakahsjskmdlslsbsbs skshsvs

Answer:

6 and 9

Step-by-step explanation:

All of the factors of 54 are:

1, 2, 3, 6, 9, 18, 27, 54

6 and 9 together equal 15

Answer:

0.43 weeks

Step-by-step explanation:

There are 7 days in 1 week , then

3 days = [tex]\frac{3}{7}[/tex] week ≈ 0.43 week ( to the nearest hundredth )

Answer:

don't u just add the side lengths and then get the answer?

Answer:

I think that it might be (−∞,1/2)

hope it was any help ^^

Answer:

It is 171

Step-by-step explanation:

[tex] {x}^{2} - 3y + x[/tex]

substitute for x and y:

[tex] = {(14)}^{2} - 3(13) + 14 \\ = 196 - 39 + 14 \\ = 171[/tex]

Answer:

[tex]14^{2} -3(13)+14[/tex]

196-3x13+14

196-39+14

157+14

171

Step-by-step explanation:

Answer:

Step-by-step explanation:

[tex]x^2+8x=38\\\\x^2+8x-38=0\\\\\Delta=8^2+4*38=216=6^3\\\\x=\dfrac{-8-6\sqrt{6} }{2} \ or\ x=\dfrac{-8+6\sqrt{6} }{2}\\\\x=-4-3\sqrt{6} \ or\ x=-4+3\sqrt{6}\\\\a=-4\\b=3\\c=6\\[/tex]

Answer:

I believe it's an exponential parent function

Step-by-step explanation:

Answer:

7 - (5- 3) + 4 = 9

Step-by-step explanation:

we use a scientific calculator and add the brackets and if it gives the answer 9 than its correct.

Answer: A

Step-by-step explanation:

Answer:

11 meters of cloth

Step-by-step explanation:

2.75 x 4 = 11 meters of cloth

Step-by-step explanation:

Ok they need to make $1,260.

Each t-shirt sells for $12 but they only make half that amount $6

So far 85 t-shirts have been sold

85 * 12 = 1,020

Ok but remember its half that amount-

1,020 / 2 = 510

So far they have $510 raised.

1260 - 510 = 750

They still need to raise $750.

If we divide $750 / 6 = 125

So that's our answer, now if we wanna verify-

125 * 12 = 1500

1500 / 2 = 750

So after revising, we are left with the answer 125, Mathewson middle school must sell 125 more t-shirts to make the desired amount.

Hope this helps! :)

Answer:

338

Step-by-step explanation:

ok

y = 2x + 5