WILL MAKE BRAINLIEST !!!Solve each quadratic function using the quadratic formula. Remember to get the equation equal to zero if it’s not already and leave the answer in its simplest form.

Answer:

letter D

Step-by-step explanation:

2

x

2

−

5

x

−

12

We can Split the Middle Term of this expression to factorise it.

In this technique, if we have to factorise an expression like

a

x

2

+

b

x

+

c

, we need to think of 2 numbers such that:

N

1

⋅

N

2

=

a

⋅

c

=

2

⋅

−

12

=

−

24

and,

N

1

+

N

2

=

b

=

−

5

After trying out a few numbers we get:

N

1

=

−

8

and

N

2

=

3

3

⋅

(

−

8

)

=

−

24

, and

3

+

(

−

8

)

=

−

5

2

x

2

−

5

x

−

12

=

2

x

2

−

8

x

+

3

x

−

12

=

2

x

(

x

−

4

)

+

3

(

x

−

4

)

(

x

−

4

)

is a common factor to each of the terms

=

(

2

x

+

3

)

(

x

−

4

)

Answer:

a see below for explanation

Step-by-step explanation:

2x^2 + 8x - 3x - 12

2x^2 +5x - 12

Answer:

[tex]r = 5[/tex] --- Radius

[tex]h = 3.9[/tex] --- Height

Step-by-step explanation:

Given

Shape: Cone

[tex]Volume = 97in^3[/tex]

Required

Determine different possible values of radius and height

The volume (V) of a cone is calculated as:

[tex]V = \frac{1}{3}\pi r^2h[/tex]

Substitute 97 for V

[tex]97 = \frac{1}{3}\pi r^2h[/tex]

Multiply both sides by 3

[tex]3 * 97 = \frac{1}{3}\pi r^2h*3[/tex]

[tex]291 = \pi r^2h[/tex]

Take [tex]\pi[/tex] as 3.14

[tex]291 = 3.14* r^2h[/tex]

Divide both sides by 3.14

[tex]\frac{291}{3.14} = \frac{3.14* r^2h}{3.14}[/tex]

[tex]\frac{291}{3.14} = r^2h[/tex]

[tex]92.68 = r^2h[/tex]

From the question, we understand that:

[tex]r \ne h[/tex]

So, we have to assume a value for either r or h and then solve for the other variable.

Let [tex]r = 5[/tex]

So, We have:

[tex]96.28 = 5^2 * h[/tex]

[tex]96.28 = 25 * h[/tex]

Make h the subject

[tex]h = \frac{96.28}{25}[/tex]

[tex]h = 3.8512[/tex]

[tex]h = 3.9[/tex] --- approximated

Note that there are other different possible values of h that is true for

[tex]92.68 = r^2h[/tex] where [tex]r \ne h[/tex]

Answer:

x= -8, 9 1/4

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Answer:

$105.45

Step-by-step explanation:

$7.40 x 14.25 = $105.45

She earns $105.45 after working for 14.25 hours.

Answer:

5x+4

Step-by-step explanation:

Answer:

5x + 4

Step-by-step explanation:

7 + 3 - 5 = 10 - 5 = 5x

6 - 2 = 4

5x + 4

Answer:

1  2/8 inches

Step-by-step explanation:

smallest = 2/8

largest = 1 4/8

difference = 1 2/8

Answer: = − 1

Step-by-step explanation:

Diameter of the circle in the middle = 8 ft

Radius of the circle in the middle :

[tex] =\tt \: \frac{Diameter }{2} [/tex]

[tex] =\tt \frac{8}{2} [/tex]

[tex] =\tt 4 \: ft[/tex]

Thus, the radius of the circle in the middle = 4 ft

Area of the entire circle :

[tex] =\tt \pi {r}^{2} [/tex]

[tex] = \tt3.14 \times 4 + 6 \times 4 + 6[/tex]

[tex] = \tt3.14 \times 10 \times 10[/tex]

[tex] =\tt 3.14 \times 100[/tex]

[tex]\color{plum} = \tt314 \: ft[/tex]

Thus, the area of the entire circle = 314 ft

Area of the circle in the middle :

[tex] =\tt \pi {r}^{2} [/tex]

[tex] =\tt 3.14 \times 4 \times 4[/tex]

[tex] = \tt3.14 \times 16[/tex]

[tex]\color{plum} =\tt 50.24 \: ft[/tex]

Thus, the area of the circle in the middle = 50.24 ft

Area of the shaded portion :

= Total area of the figure - Area of the circle in middle

[tex] =\tt 314 - 50.24[/tex]

[tex]\color{plum} =\tt 263.76 \: ft[/tex]

▪︎Therefore, the area of the shaded portion = 263.76 ft

Answer:

1,2,5 equal 32

Step-by-step explanation:

Answer:

(2³×4)+(11-11)5

4²×2

2^5

Step-by-step explanation:

(2³÷4)+(11-11)5

=(8×4)+0

=32

4²×2

=16×2

=32

2^5

=2×2×2×2×2

=4×4×2

=16×2

=32

Answer:

31

Step-by-step explanation:

[tex]a^{2} +6=?[/tex]

[tex](5)^{2} +6=?[/tex]

[tex]25+6=?[/tex]

=31

Answer:

78 squared feet

Step-by-step explanation:

area= base x height

so 6 x 13 = 78

and yeah

HOPE I HELPED:))

your answer is 91 square feet

Answer:

31 tests.

Step-by-step explanation:

The rate for the grading is 10.5 every 30 minutes.

Two 45 minute prep periods are 90 minutes.

90 / 30 = 3.

Since three 30 minute periods fit into 90 minutes, we get

3 x 10.5 = 31.5 tests.

Since a teacher did not finish grading the .5 of the test, we don't count it.

Our answer is 31 tests.

The answer for the first equation x + 5y = 0 is,

[tex]x = - 5y[/tex]

Answer:

y=16x ??

Step-by-step explanation:

Answer:

=11x+5

Step-by-step explanation:

Let's simplify step-by-step.

2x+3+9x+2

Combine Like Terms:

=2x+3+9x+2

=(2x+9x)+(3+2)

=11x+5

Answer:

=11x+5

Answer:

20,067.68

All I did was 23,200 and minus $195.77 15 times! Your welcome.

Answer:

Yes you are correct.

Answer:

Year 1 and 2

36%

Step-by-step explanation:

Given the data :

Year ______1 ___ 2 ____ 3 ___ 4

Students __ 14 __ 19 ___ 25 __ 33

Greatest growth is observed between year 1 and 2

Growth percent :

(year 2 - year 1) / year 1 * 100%

(19 - 14) / 14 * 100%

5 / 14 * 100%

0.3571 * 100%

= 35. 71%

= 36%

The growth percent between year 1 and 2 is greater than between the other years

Year 2 and 3 = (6/19) * 100% = 31.57%

Year 3 and 4 = (8/25) * 100% = 32%

Answer:

1 and 2 x=32%

Step-by-step explanation:

1. 5/14=x/100

2. 500/14=14x/14

so you get 36%

BTW the quiz 3-4 and 3-5 sucks lol

Answer:

24-(L times 2) then divide the awnser by 2

Step-by-step explanation:

Answer:

2(l+b)

2*4+2*b=24

8+2b=24

2b=24-8

2b is 16 so b is 16/2

which is 8

Answer:

78.6m of fencing

That would cost $982.50

Step-by-step explanation:

Perimeter: 2(22.7)+2(16.6)=P

P = 78.6

Cost: 78.6*12.50

C = 982.50

Answer:

Approximately 15.05 ft

Step-by-step explanation:

You need to use tangent for this question.

Since tan θ = [tex]\frac{Opposite}{Adjacent}[/tex]

to find the Opposite, we need to rearrange the equation to:

Adjacent × tan θ = Opposite.

So if you insert 62 for θ and 8 feet for Adjacent, you will get:

8 × tan(62) = Opposite.

and you will get approximately 15.05 feet for your Opposite side

Answer:

The first option.

Step-by-step explanation:

Answer:

X=45

Step-by-step explanation:

45+3x=180

180-45=135

135/3=45

x has to be 45

x=45

Answer:

It will be the first one

Step-by-step explanation:

Hope this Helped

Answer:

answer is 8

Step-by-step explanation:

Answer:

m=5

Step-by-step explanation:

Answer:

English translate please so i can help you?

Step-by-step explanation: