If x = 10 find the value of 2x2 + 21

Answer:

(0,-9), x = 0, (-3,0), (3,0), domain, -9

Step-by-step explanation:

Complete the square and you can read everything off the equation,

y  = x^2 - 9

= (x - 0)^2 - 9

Vertex : (0,-9)

Axis of symmetry: x = 0

x-intercepts:  x^2 = 9 -> x = ±3

Left x-intercept: (-3,0)

right x-intercept: (3,0)

Since the function is well-defined for any x-values,

we can say that its domain is the set of all real numbers.

Since the minimum point of the graph is (0,-9),

The range will be greater than or equal to -9.

Answer:

-

Step-by-step explanation:

-

Answer:

its gonna be 3ft and 10 inch

Answer: You are correct.

Step-by-step explanation: If you changed the amount of seats then it would effect the amount of tickets sold

Answer:

60

Step-by-step explanation:

2/3*d=40

d=40*3/2

d=60

Answer:

x - 8 = 0

Step-by-step explanation:

Since, the cube root of a number is 2.

Let the number be x.

Therefore,

[tex] \sqrt[3]{x} = 2 \\ cubing \: both \: sides \\ {( \sqrt[3]{x})}^{3} = {(2)}^{3} \\ x = 8 \\ x - 8 = 0[/tex]

Answer:

B and C

Step-by-step explanation:

Not A because the side lengths aren't multiples.

Not D because it would be congruent, unless it had different angles, but then similar shaps must have the same angles

Good luck <3

Answer:

5x(f+9g)

Step-by-step explanation:

5xf(1)+5xg(9)

Factor out 5.

5(xf+9xg)

Consider xf+9xg. Factor out x.

x(f+9g)

Rewrite the complete factored expression.

5x(f+9g)

Graph if needed:

Answer:

Step-by-step explanation:

let tacos be x and burritos be y

so, your 1st eqn. is 3x + 5y = 17.75

2nd eqn. is 4x+ 2y = 12

Solving the 2 eqns: Multiply eqn 1 with 2 and eqn 2 with 5

So: 6x+10y=35.5

-20x-10y=-60

=-14x=-24.5

x=24.5/14 = 1.75

Substituting the value of x in eqn 1 : (3*1.75)+5y=17.75

y = 2.5

Answer:

Approximately $242,000

Answer:

3.3x =15

x=15÷3.3

x= 4.5454545454

Answer:

Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks - greater surface area and since the reaction occurs at the surface we get a faster rate. The presence (and concentration/physical form) of a catalyst (or inhibitor).

Step-by-step explanation:

Answer:

many or few

Step-by-step explanation:

scan this code

Answer:

The correct answer is 756÷10^2=7.56

Step-by-step explanation:

can i have brainliest please

Answer:

a=116.5°

b=116.5°

Step-by-step explanation:

360-95-32=233

233÷2=116.5

a and c are equal, so both are 116.5

Answer:

I think 235.5 mm cubed

Step-by-step explanation:

The formula for the volume of a cone is V=1/3hπr².

1/3 x 9 x π x 5² =

1/3 x 9π x 25 =

1/3 x 225π =

75π

let's say π=3.14

75 x 3.14 = 235.5

Answer:

< could be it (●'◡'●)

Step-by-step explanation:

Answer:

Talia needs to factor -1 out of one of the two binomials

Step-by-step explanation:

She could take:

3x(5x - 1) + 4(-5x + 1)

and rewrite it as:

3x(5x - 1) - 4(5x - 1)

= (3x - 4)(5x - 1)

Answer:

The answere is C.

Step-by-step explanation:

It is right on edge

The answer is, X = 12.

hope it helps.

Answer:

x = 12

Step-by-step explanation:

simlify 4/3 * (3x-12)

4x - 16 = 2x + 8

combine like terms, so subtract 2x by 4x

2x - 16= 8

then finish combining like terms, so 16 plus 8

2x = 24

divide 24 by 2

x = 12

The surface area of the cone is 16π square units.

The surface area of the cone is given by;

⇒ Area = πrl + πr²

Here, We have;

A right cone has a slant height of 6 and a radius of 2.

Substitute all the values in the formula

⇒ Area = πrl + πr²

⇒ Area = π x 2 x 6 + π x 2²

⇒ Area = 16π

Hence, The surface area of the cone is 16π square units.

Learn more about the surface area here;

brainly.com/question/2835293

#SPJ5

Answer:

? measures (13 - 9) or 4 yards

Step-by-step explanation:

9514 1404 393

Answer:

  64 degrees

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relations between triangle sides and trig functions. Here, the marked sides are opposite and adjacent to the marked angle, so the relevant relation is ...

  Tan = Opposite/Adjacent

  tan(θ) = 29/14

To find the angle measure, we use the inverse function. It may be called tan⁻¹ on your calculator. It also goes by the name "arctangent." The term "arctan" can be thought of, or even pronounced as, "the angle whose tangent is ...".

  θ = arctan(29/14) = 64.23°

The measure of angle θ is about 64°.

_____

Additional comment

The default units for angle measure are radians in most spreadsheets and on-line calculators. You need to make sure your hand-held calculator mode is set to give angles in the units you want. Here, we've given the angle in degrees, which is usually what is expected in problems like this.

2 cot²(t ) sin(t ) - cot²(t ) = 0

cot²(t ) (2 sin(t ) - 1) = 0

cot²(t ) = 0   or   2 sin(t ) - 1 = 0

cot(t ) = 0   or   sin(t ) = 1/2

cos(t ) / sin(t ) = 0   or   sin(t ) = 1/2

cos(t ) = 0   or   sin(t ) = 1/2

[t = cos⁻¹(0) + 2nπ   or   t = cos⁻¹(0) - π + 2nπ]

  or   [t = sin⁻¹(1/2) + 2nπ   or   t = π - sin⁻¹(1/2) + 2nπ]

(where n is any integer)

t = π/2 + 2nπ   or   t = -π/2 + 2nπ   or   t = π/6 + 2nπ   or   t = 5π/6 + 2nπ

Note that the first two families of solutions overlap and can be condensed, so that

t = π/2 + nπ   or   t = π/6 + 2nπ   or   t = 5π/6 + 2nπ

Answer:

B. -1

Step-by-step explanation:

I got it right on Edge.

Answer:

f(−3) =

✔ –5/2

f(−1) =

✔ 3/2

f(3) =

✔ 3/4

Step-by-step explanation:

got it right on edg 2022. make me brainliest

Answer:

12.3435

Step-by-step explanation:first this then that then this and that is the middle number.

Answer:

5 ft

Step-by-step explanation:

area = L * W * H

35    =  L * W

Volume = (L *W) * H

since we have already found that L * W is already 35

175 = 35 * H

Divide by 35  on both sides to get H

175/35 = 5

answer = 5 ft