what is the value of x +when x=3?​

Answer:

x^2+x+3

Step-by-step explanation:

y=x-7

x-7=x^2+2x-4

x^2+2x-4-x+7

x^2+x+3

Answer: x-7=x^2+2x-4

A P E X

Step-by-step explanation:

but also, if you are wondering how I got to that answer, you substitute y in for the y equation. Since y=x-7 you’ll take that why and put in in the y in (y)=x^2+2x-4.

Answer:

x^2 + 11x - 13

Step-by-step explanation:

A = 3x^2 + 5x - 6

B = 2x^2 - 6x + 7

=> A - B = (3x^2 + 5x - 6) - (2x^2 - 6x + 7)

             = (3x^2 - 2x^2) + (5x + 6x) - (6 + 7)

             = x^2 + 11x - 13

I hope this helps!

Answer:

You have the right answer.

Step-by-step explanation:

The image might be blurry but its the best I can post.

That's solving it without the x and y values. Its still the answer you picked.

Hope this helps, have a good day! :)

(Brainliest would be appreciated?)

Answer:

5√xy

Step-by-step explanation:

√25x²y²/√xy= √25x²y²/xy= √25xy= 5√xy

Answer:

[tex]n^{26}[/tex]

Step-by-step explanation:

[tex]n^{3 \times 2} \times n^{5 \times 4}[/tex]

[tex]n^{6} \times n^{20}[/tex]

[tex]n^{6+20}[/tex]

[tex]n^{26}[/tex]

Answer:

N^26

Step-by-step explanation:

N ^3^2 = n^6

N^5^4 = n^20

Multiply. Use laws of exponents

N^6 x n^20 = n^20+6 = n^26

Hope this helps

Answer:

Shape

Step-by-step explanation:

Shape because if you make the boat the right shape, it has a better chance of floating.

Answer:

The answer would be 18

Step-by-step explanation:

the formula for area of a triangle is 1/2b*h

so would mulitply 3*3 and get 9/2 which would be 4.5 do that on the otherside and you would get 4.5 again add together and you would get 9

for the square you would calculate the area by multplying b*h to get 9 so 9+9=18

Answer:

a = 20.79cm ( 2 decimal places)

Step-by-step explanation:

find the length of the identical sides (i name it "x") first using Pythagoras theorem

[tex]14.8^{2}[/tex] = [tex]x^{2} + x^{2}[/tex]

219.04 = [tex]2x^{2}[/tex]

[tex]x^{2}[/tex] = 219.04/2 = 109.52

x = [tex]\sqrt{109.52}[/tex]

now find a,

[tex]a^{2}[/tex] = [tex](\sqrt{109.52}) ^{2}[/tex] + [tex](7.5 + \sqrt{109.52}) ^{2}[/tex]

[tex]a^{2}[/tex] = 109.52 + 322.7477 = 432.2677

a = [tex]\sqrt{432.2677}[/tex] = 20.791048

Answer:

the answer is 21.6%

Step-by-step explanation:

Answer:

Step-by-step explanation:

The next term of a Fibonacci sequence is generated by taking the sum of the 2 preceding value of the sequence. Given the the first and third term of a Fibonacci sequence to be x and y

x, _, y...

let the second term be a, fourth term be b and fifth term be c to have the sequence;

x, a, y, b, c...

According to the definition;

x+a = y... 1

a+y = b... 2 and;

y+b = c... 3

From equation 1, a = y-x

Substituting a = y-x into equation 2 to get b we have;

(y-x)+y = b

2y-x = b

b = 2y-x

Substituting b = 2y-x into equation 3 to get 'c'

y +  2y-x = c

3y-x = c

c = 3y-x

The second term of the sequence is y-x

The fourth term of the sequence is 2y-x

The fifth term of the sequence is 3y-x

Answer:

She made [tex]18\frac{1}{15}[/tex] cups of lemonade in total.

Step-by-step explanation:

A fraction contains a numerator(upper value) and denominator(lower value). The total cup of lemonade that Beatrice made is 25 1/3.

A fraction contains a numerator(upper value) and denominator(lower value).

When the numerator is less than the denominator, the fraction is called a proper fraction, otherwise, it is called an improper fraction.

A mixed fraction can be converted as,

2 1/2

= (2×2 + 1)/2

= 5/2

= 2.5

Given that Beatrice made lemonade twice, first, she made 7 2/3 cups of lemonade and in the second turn, she made 10 3/5 more cups of lemonade. Therefore, the total cups of lemonade that Beatrice made is,

Total cups of lemonade = 7 2/3 + 10 3/5

= 23/3 + 53/5

= (23×5 + 53×3)/(3×5)

= (115 + 265)/15

= 380/15

= 25 5/15

= 25 1/3

Hence, the total cup of lemonade that Beatrice made is 25 1/3.

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Answer:

h≤18

Step-by-step explanation:

Step  1  :

Solve Basic Inequality : 1.1      

Add  18  to both sides h ≤ 18

Inequality Plot

Inequality plot for

        h  - 18.000  ≤  0

Answer: h≤18

Hope this helps.

Answer:

b

Step-by-step explanation:

Answer:

2/3

Step-by-step explanation:

32/48= 16*2/16*3= 2/3

to do this all you have to do is make the denominator 1 and the numerator should be 1.566666667

Answer:

The correct answer is D. 360°

Step-by-step explanation:

The sum of all the exterior angles of a regular n-gon or a polygon is always equal to 360°.

Let us consider the image attached.

First of all let us consider the triangle.

As per the property of exterior angles: The exterior angle is equal to the sum of 2 opposite interior angles.

[tex]\Rightarrow \angle 1=\angle B + \angle C\\\Rightarrow \angle 2=\angle A + \angle C\\\Rightarrow \angle 3=\angle A + \angle B[/tex]

Where [tex]\angle A, \angle B\ and\ \angle C[/tex] are the interior angles of the triangle.

Adding the above equations:

[tex]\angle 1 +\angle 2 +\angle 3 = 2 \times (\angle A +\angle B +\angle C )[/tex]

The sum of interior angles of a triangle is always equal to 180°

[tex]\angle A +\angle B +\angle C = 180^\circ[/tex]

[tex]\angle 1 +\angle 2 +\angle 3 = 2 \times 180^\circ\\\Rightarrow \angle 1 +\angle 2 +\angle 3 = 360^\circ[/tex]

Hence, proved that the sum of exterior angles is [tex]360^\circ[/tex].

So, the correct answer is D. [tex]360^\circ[/tex]

Answer:

=

−

1

2

×

3

2

=

1

×

9

=

9

Step-by-step explanation:

f

(

−

3

)

=

9

Explanation:

f

(

x

)

=

x

2

To find f(-3) replace

x

in the function by

−

3

Therefore:

f

(

−

3

)

=

(

−

3

)

2

=

−

1

2

×

3

2

=

1

×

9

=

9

Answer:

9

Step-by-step explanation:

f(x) = x²

f(-3) =(-3)² = (-3)*(-3) = 9

The gradient of a line which perpendicular to C is -3/2

The gradient of a line shows how steep it is. Gradient is also called the slope of a line.

Let's use the fact that the product of the gradients of two perpendicular lines is -1 to determine the gradient of a line perpendicular to line C.

We can determine the gradient of the line perpendicular to C if the gradient of line C is 2/3.

Take the negative reciprocal of the gradient, we have;

-3/2

Since the negative reciprocal of 2/3 is -3/2.

Therefore, the gradient of the line perpendicular to C is -3/2.

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Answer:

Step-by-step explanation:

(f+g)(x) = f(x) + g(x)

           = 4x + 1 + x² - 5

            = x² + 4x  - 4

Answer:

x^2 +4x -4

Step-by-step explanation:

f(x) = 4x+1

g(x) = x^2-5

(f+g)(x) =  4x+1 + x^2 -5

Combine like terms

            = x^2 +4x +1-5

              =x^2 +4x -4

Answer:

r=8

Step-by-step explanation:

Because 16 divided by 2 is 8

The radius of a circle has a circumference of 16 at r = 8.

Given: the formula for the circumference of a circle is C = 2r, where r is the radius and C is the circumference.

The circumference of a circle is equal to π.

π ≈ 3.14

multiplied by the diameter of the circle.

Therefore, the diameter has twice the length of the radius.

In equation form:

2r = d.

2r = 16.

r = 8.

Note, 2r = d,

Then, the equation C = 2πr holds and can be used in place of C = πd.

The radius of a circle has a circumference of 16 at r = 8.

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Answer:

Both brothers will have the same amount of money is their saving accounts after six months.

Step-by-step explanation:

I worked this out by finding out the first 8 months of savings for both brothers:

Patrick:               His brother:

200                     150

225                     185

250                     220

275                     253

300                     290

325                     325

375                     360

400                     395

I then looked across my results to see that at 6 months both brothers had $325.

Hope this helped.

Answer:

(2,-1)

Step-by-step explanation:

Multiply the original coordinates by 1/3

Answer:

C

Step-by-step explanation:

This is a function because it is a standard quadratic equation, meaning it is a parabola that opens up so it passes the vertical line test.

Answer:

C

Step-by-step explanation:

It is a quadratic equation. This means it is a parabola that opens up so it does pass the vertical line quiz.

Answer:

150

Step-by-step explanation:

A=bh

A=15×10

A=150

Answer:

150

Step-by-step explanation:

it is just like finding the area of a rectangle! 10*15=150

Answer:

75

Step-by-step explanation:

It's D on edg

The number of minutes it take Arnob to catch up to Kathleen is 75 minutes.

Given:

Mile head start=5 mile

Distance along y-axis=2 lines

Hence:

y=1/15x+5

=y=2/15x

So,

1/15x+5=2/15x

1/15x=5

x=75 minutes

The correct option is D.

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1) 180 square cm

Answer:

2) 41 cubic cm

Step-by-step explanation:

1)

Area of pool = 12 * 15 = 180 square cm

2) Volume of water = 1/3 * Volume of pool

= 1/3 *123

= 41 cubic cm

Answer:

To find the y-intercept, graph the points, and draw a line that passes through them. the place that it passes the y-axis is the y-intercept. To find the slope, find two points on the line. Take the increase in the y-coordinate and divide it by the increase in the x-coordinate.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

(-1/2, -1/8)

Step-by-step explanation:

I graphed it and (-1/2, -1/8) is the only point that lands on the graph.