f(x)=3x²+4x-1
evaluate f(-2)​

Answer:

-8.96

Step-by-step explanation:

so -14/5 is -2.8

and 16/5 is 3.2

so multiple - 2.8×3.2 and you get

-8.96

Answer: 1.18. 18 is repeated.

Explanation is below.

Answer:

(0, -2)

Step-by-step explanation:

The x- and y-coordinates indicate the position of a point in the 2D coordinate plane relative to the origin. The coordinates are written as an ordered pair of numbers (x, y), where x indicates horizontal position and y indicates vertical position.

Example

The position of the point in the figure below is specified by the ordered pair, (6, 4). 6 is the x-coordinate and 4 is the y-coordinate of the point.

Answer:

pyothorahas rule is show

Answer:

A) 1227

Step-by-step explanation:

[tex]\frac{12^9}{12^3}=2985984[/tex]

[tex]12^{3}=1728\\and 12^{9}=5159780352[/tex]

Answer: 37 donuts

Step-by-step explanation:

coffee for 2,

donuts for 1.5

c = coffee

d = donuts

lets make an equation

c*2 + (80-c)*1.5 = 141.5

from this we get:

c= 43.

if c = 43, then d is 80-43 = 37.

they sold 43 coffees, and 37 donuts.

lets check the math

43*2+37*1.5 = 141.5. math checks out

mark me brainlist

Answer:

Applied force

Step-by-step explanation:

Answer:

100 cm 3

Step-by-step explanation:

20 x 1 = 20

20 x 5 = 100 cm 3

100 cm 3 is the volume

Answer:

ok

Step-by-step explanation:

Answer: A Diameter x pi= circumference

Step-by-step explanation:

The circumference of a circle is given as:

= 2πr

where,

π = pi = 3.14

r = radius

Note that diameter = 2 × radius.

Therefore, circumference = 2πr = πd

Therefore, circumference will be pi multiplied by diameter. The correct option is A.

The correct statement is:

A. Diameter x pi = circumference

Answer:

x = -2, y = -8

Step-by-step explanation:

13(y + 6) - 6y = 22

=> 13y + 78 - 6y = 22

=> 7y = -56

=> y = -8

x = -8 + 6

=> x = -2

Step-by-step explanation:

I am not sure what your problem is.

is this one line just a question to you ? is x=6 a solution ?

if that is the case then ... yes, x=6 is a solution to the inequality.

x - 5 < 10

x < 15

so, 6 < 15 is true, therefore, x=6 is a valid solution

Answer:

427.37 ft2

Step-by-step explanation:

can you see the photo i sent

i hope it can help you

Answer:

4 PM

Step-by-step explanation:

At 4 PM the temperature reached 68 degrees Fahrenheit??

Answer:

[tex]4\:\text{PM}[/tex]

Step-by-step explanation:

The first point where [tex]y=68[/tex] occurs at [tex]x=4[/tex], hence [tex]\boxed{4\:\text{PM}}[/tex]

Answer:

the second box for y is 9

the third box for x is 2.5

im not sure about the third box for y

Answer:

18.8496 units

Step-by-step explanation:

circumfrence = 2*pi*r

plug in 3

c=2*pi*3 = 18.8496 units

Answer:

x = 5

Step-by-step explanation:

TU is a tangent segment with length 6.  RT is a secant segment.

In the circle, the square of the tangent is equal to the product (multiply) of the part of the secant outside the circle and the secant's entire length.

Words don't work well here, do they!

In symbols,  (ST)(RT) = (TU)^2

[tex]4(x+4)=6^2\\4x+16=36\\4x=20\\x=5[/tex]

Answer:

1.17279656871

Step-by-step explanation:

Answer:

1.72796569

Step-by-step explanation:

0.4567304 x 2.5678093 = 1.72796569

Answer:

7

Step-by-step explanation:

To find the maximum number of turning points of any polynomial function, subtract one from the degree.

Since the degree is 8, subtract 1 from this:

8 - 1

= 7

So, the maximum number of turning points is 7.

As per the given question, it is stated that the length of a rectangle is 5 m less than twice the breadth.

Assumption : Let us assume the length as "l" and width as "b". So,

[tex] \twoheadrightarrow \quad\sf{ Length =2(Width)-5} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=(2b-5) \; m} [/tex]

Also, we are given that the perimeter of the rectangle is 50 m. Basically, we need to apply here the formula of perimeter of rectangle which will act as a linear equation here.

[tex]\\ \twoheadrightarrow \quad\sf{ Perimeter_{(Rectangle)} = 2(\ell +b) } \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50= 2(2b-5+b)} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50= 2(3b-5)} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50= 6b - 10} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{50+10= 6b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{60= 6b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\sf{\cancel{\dfrac{60}{6}}=b} \\[/tex]

[tex]\\ \twoheadrightarrow \quad\underline{\bf{10\; m = Width }} \\[/tex]

Now, finding the length. According to the question,

[tex] \twoheadrightarrow \quad\sf{ \ell=(2b-5) \; m} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=2(10)-5\; m} [/tex]

[tex] \twoheadrightarrow \quad\sf{ \ell=20-5\; m} [/tex]

[tex]\\ \twoheadrightarrow \quad\underline{\bf{15\; m = Length }} \\[/tex]

Therefore, length and breadth of the rectangle is 15 m and 10 m.

Answer:

A & E

Step-by-step explanation:

_________________

Answer: 25%

Step-by-step explanation:

Given

Emelia measures the weight of the rock to be 30 gm

The actual weight was 24 gm

Percentage error is given by  

[tex]\Rightarrow \dfrac{\text{Deviation }}{\text{Actual value}}\times 100[/tex]

Insert the values

[tex]\Rightarrow \dfrac{30-24}{24}\times 100\\\\\Rightarrow \dfrac{6}{24}\times 100\\\\\Rightarrow 25\%[/tex]

Therefore, the percentage error is 25%.

Respuesta:

h = V / 15

Explicación paso a paso:

El volumen de un prisma rectangular se calcula usando la relación:

Largo ancho alto

Donde, largo y ancho son la dimensión de la base

Por eso,

Volumen = Base * altura

Volumen = (5 cm * 3 cm) * altura

De la pregunta, no se da el volumen, por lo tanto, tomamos el volumen como V en otro para calcular la altura, h

V = 15h

Divide ambos lados entre 15

V / 15 = 15h / 15

V / 15 = h

Answer:

[tex](-5,-4)[/tex]

Step-by-step explanation:

A 180 counterclockwise rotation of (5, 4).

The transformation rule is as follows:

[tex](x,y)[/tex] turns into [tex](-x,-y)[/tex].

Answer:

Imagine there's 100 students in the school. 72 students are taking environmental science. 25 students take both environmental science and geography.

That means of the 72 students taking environmental science, 25 are also taking geography. Thus, the probability that a student is taking geography given than that the student is taking environmental science is 25/72 = 0.347.

Answer:

a= 1/(a-5) then a2-1/A2 = 5√29

Step-by-step explanation:

Answer:its A. The range is 94 lb.

Step-by-step explanation: i took the Question

Answer: I think 10

Step-by-step explanation: cuz area is length x height and basically you just do square root of 100 Bc thags a square so the sides should be equal