Please help with these algebra questions!!!! I will give brainliest

Answer:

  (x, y) = (5, -3)

Step-by-step explanation:

Apparently, you're asked to solve for x first. This suggests you will be substituting for x in the quadratic. This works, but may make the problem more difficult than it has to be.

Using the found value of x, we have ...

  y = (2 -y)^2 -11(2 -y) +27

  y = 4 -4y +y^2 -22 +11y +27 . . . . eliminate parentheses

  y^2 +6y +9 = 0 . . . . . . . . . . . . . put in standard form

  (y +3)^2 = 0 . . . . . . . . . . . . . . factor

  y = -3 . . . . . . . . . . . . . . . . . the value of y that makes the factor zero

  x = 2 -(-3) = 5

The one solution is (x, y) = (5, -3).

_____

Alternate solution

The two expressions for y can be equated:

  x^2 -11x +27 = -x +2

  x^2 -10x +25 = 0 . . . . . rearrange to standard form

  (x -5)^2 = 0 . . . . . . . . factor

  x = 5 . . . . . . . . . . . x that makes the factors zero

  y = -5 +2 = -3 . . . corresponding value of y

This solution removes the need for the "eliminate parentheses" step in the original solution, so cuts down on the opportunity for error.

__

The attached graph shows the one solution is the point where the line is tangent to the parabola.

Answer:

12.6 m^2

Step-by-step explanation:

area of sector = 90/360 × 3.14 × 4^2

= 12.56

to the nearest tenth = 12.6 m^2

[tex]\textit{area of a sector of a circle}\\\\ A=\cfrac{\theta \pi r^2}{360}~~ \begin{cases} \theta =\stackrel{\textit{in degrees}}{angle}\\ r=radius\\[-0.5em] \hrulefill\\ \theta =270\\ r=4 \end{cases}\implies A=\cfrac{(270)(\stackrel{\pi }{3.14})(4)^2}{360}\implies \underset{\textit{rounded up}}{A\approx 37.7}[/tex]

Answer:

Red:green = 3:1, not 3:2

r:g = 3:1, so g:r = 1:3 = 2:6

r:t = 2:11 = 6:33

g:r:t = 2:6:33

now just read off the ratios.

r:t = 6:33 = 2/11

b:t = 1 - (g:t - r:t) = 25/33

b:g = 25/2

r:b = 6/25

Step-by-step explanation:

(I deserve to be the brainliest )

Answer:

There are 2 cups of fruit in the fruit salad.

Step-by-step explanation:

We consider the total number of cups of fruit as x. This represents the total of the given numbers of cups of raisins, oranges and apples. Hence;

x=38+78+34

Using the LCM of 8 for the denominator, we get:

x=38+78+68

x=3+7+68

x=168

x=2

Answer:

  56.3%

Step-by-step explanation:

The ratio of the selling price to the cost is ...

  21.88/14 = 1.562857...

That is, 0.562857... of the original cost has been added to that cost. This markup amounts to about ...

  0.562857 × 100% ≈ 56.3%

of the cost.

The markup percentage is about 56.3%.

Answer:

$524,231.01

Step-by-step explanation:

use geometric series formula:

[tex]S_n=\frac{a(1-r^n)}{1-r} [/tex]

where [tex]a[/tex] is the the first term in the sequence and [tex]r[/tex] is the common ratio

Therefore, [tex]a=38000[/tex] and [tex]r=1.025[/tex]

[tex]S_{12} =\frac{38000(1-1.025^{12})}{1-1.025} =524 231.01[/tex]

Answer:

168 and 12 is the answer for this

Answer:

Slope of the first line: m=-5

Slope of the 2nd line: m=2

1 pt of intersection.

1 solution for the system.

Step-by-step explanation:

The three answers in the question are correct. The slope is the number beside the x when the equation is in the form y=mx+b

That's where you find the -5 and then the 2. These lines have different slopes. That means they will intersect (cross) they only touch at one point. The point of intersection is the solution to the system of equations. The point is an x,y pair. If you put that x and y into either (both) equation(s) you will get a true statement. Systems like this (two lines) dont have 1 or 2 or 3 solutions. They only have one or none or infinite solutions. Good luck!

Answer:

[tex]\sqrt[2]{4^3}[/tex]

Step-by-step explanation:

4 ^ (3/2)

The bottom  of the fraction is the index and the top is the power

[tex]\sqrt[2]{4^3}[/tex]

Answer:

It would be the second option

Step-by-step explanation:

When you put a fraction into radical form, the numerator goes next to the radicand. And the denominator goes outside of the radical (into the index section). You just had it switched :)

Answer:

4^16

Step-by-step explanation:

We apply the power rule:

a^b / a^c = a^(b-c)

In our case a = 4, b = 11, c = 5

Therefore the right answer is 4^6.

Answer:

20 (.8) = 16

It takes him 16 minutes to walk to school.  

This is because 80% as a decimal is .8 and you multiply that by how long it takes Person A to walk and you get 16.

The number of minutes that Emiliano walks to school will be 25 minutes,

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

It takes Emiliano 20 minutes to walk 80% of the method for tutoring.

Let 'x' be the final time taken. Then we have

80% = (20 / x) × 100

0.80 = 20 / x

x = 20 / 0.80

x = 25 minutes

The number of minutes that Emiliano strolls to school will be 25 minutes,

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

Answer:

Plot a point at these points:

(-1, -2)

(2, -6)

(2, -4)

(5, -3)

(1, -1)

Step-by-step explanation:

How every many units the point is to the left of the blue line you do the same amount of units to the right of the line, and you do this for all the points.

Answer:

should be 2.24. I am sorry if I am wrong

Step-by-step explanation:

31.36÷14=2.24

Answer:

x = 5

Step-by-step explanation:

(9 - x) × 10 = 40

90 - 10x = 40

90 - 40 = 10x

50/10 = 10x/10

x = 5

Step-by-step explanation:

A number is subtracted from 9. We can call this number "x."

9-x is our first part. Now the problem is saying that the result is multiplied by 10.

10(9-x)

Now the problem is saying that this expressions is equal to 40. Now we have constructed the equation 10(9-x) = 40. Now let's solve!

10(9-x) = 40
divide each side by 10.
9-x=4
subtract 9 from both sides
-x=-5
multiply each side by -1
x=5

The number is 5

There are 8 prime numbers under 20: 2, 3, 5, 7, 11, 13, 17 and 19. The first 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29. There are 25 prime numbers between 1 and 100.

Answer:

A

Step-by-step explanation:

0.99/3=0.33

0.33*5=1.65

Answer:

69cm

Step-by-step explanation:

pls mark this answer

Answer:

Percent Complete is a measure based on duration and Percent Work Complete is based on work. The two fields are calculated as follows: Percent Complete = Actual Duration/Duration (PC=AD/D) Percent Work Complete = Actual Work/Work (PWC=AW/W)

Step-by-step explanation:

Answer:

  A.  2.9π(9²)

Step-by-step explanation:

You are expected to know that the area of a circle is given by the formula ...

  A = πr²

and that r in the formula represents the radius of the circle, half the diameter.

The area of the circular base of the cylinder is the area of a circle with a radius of 9 feet. It will be ...

  A = π(9²)

When that is multiplied by the height of the cylinder to find its volume, you have ...

  V = Bh

  V = (π(9²))(2.9)

This can be rearranged to match the form in answer choice A:

  2.9π(9)²

Answer:

9^9

Step-by-step explanation:

Quick question, how long is Joseph saving for? If it's 1 money of saving, he can spend $1,775 and if he saves for 1 year he can spend up to 21300.

Answer:

The graph represents a function

Step-by-step explanation:

As you can observe, there is only one unique output assigned to every input. If an input contained 2 or more outputs, the relationship wouldn't be a function.

Answer:

Yes

Step-by-step explanation:

Draw vertical lines parallel to the "y" axis and you will notice that they only cross the graph once. This only happens in function graphs.

Hope this helps

Answer:

4

Step-by-step explanation:

1-2x=-1x-3

add 1x to both sides

1-1x=-3

subtract one to both sides

-1x=-4

divide by -1

x=-4

Answer:

x = 4

Step-by-step explanation:

1 - 2x = -x - 3    Step 1: add 2x to both sides

1 = x - 3             Step 2: add 3 to both sides

x = 4

Answer:

three hundred sixty-nine and twenty-eight hundreths

Step-by-step explanation:

. means "and"

make sure to add the dashes and twenty-eight is 28/100 so it's "twenty-eight hundredths

Answer:

369 and 28 hundredths

Step-by-step explanation:

So for example 369.28

The 2 will be a tenth (Because every first decimal starts with a tenth)

The 8 will be a hundredth (This happens because it is being multiplied by 10)

"But what if it is two or more decimals?"

You would just combine it and say it as a number but end it with a "ths".

So you get 369 and 28 hundredths

And also know that you can do this with any decimal!

Answer: 154

Step-by-step explanation:

300/2=150

150+4=154

150-4=146

Answer:

(9y-5f)(7d-9)

Step-by-step explanation:

is this the answer tou was looking for or do you need a different answer.