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3 years ago

Will mark brainlist if its right

Mathematics

1 answer:

pickupchik [31]3 years ago

3 0

Answer: S<\-2

Hope i was some help.

Step-by-step explanation: sorry I can’t put the right sign my keybored won’t let me but you know what it stands for.

3s+6s</-5(s+2)

start off with -5(s+2) you multiply -5 with s and it is -5s then you do the same for +2 take -5 and multiply by +2 pos times a neg is always a neg so it’s -10.

3s+6<\-5s-10

So you have to get rid of the -5s so your going to do the inverse which is add 5 to -5 and it will get rid of -5s but then you have to add 5 to 3s and that will be 8s.

8s+6</-10

Now your going to get rid of the +6 and to do that you do the inverse you subtract 6 and it will get rid of it now you have to do the same for -10 so you will subtract 6 to -10 and that will equal -16.

Now you have to divide!

8s/8 </ -16/8

And it should equal s <\-2

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Evan graphed a cubic function, f(x) = ax3 + bx2 + cx + d, and determined the roots of f(x) to be +1 and 2. What is the value of

Lana71 [14]

The value of $b$ in the <em>cubic</em> polynomial is -4.

<h3>How to determine the coefficients of a cubic polynomial</h3>

After a quick analysis, we find that given <em>cubic</em> function is equivalent to the following equivalence:

$x^{3}+b\cdot x^{2}+c\cdot x + d = (x-1)^{2}\cdot (x-2)$

$x^{3}+b\cdot x^{2}+c\cdot x + d = (x^{2}-2\cdot x + 1)\cdot (x-2)$

$x^{3}+b\cdot x^{2}+c\cdot x + d = x^{3}-2\cdot x^{2}+x-2\cdot x^{2}+4\cdot x-2$

$x^{3}+b\cdot x^{2}+c\cdot x + d = x^{3}-4\cdot x^{2}+5\cdot x -2$

After a quick observation, we conclude that the value of $b$ in the <em>cubic</em> polynomial is -4. $\blacksquare$

To learn more on polynomials, we kindly invite to check this verified question: brainly.com/question/17822016

6 0

2 years ago

se quiere pintar una pared en forma de hexágono regular y se sabe que cada lado mide 3m y que su apotema es de 2,8m cual es el a

qwelly [4]

Answer:

El área total a pintar será:

$A_{tot}=25.2\: m^{2}$

Step-by-step explanation:

Sabiendo el apotema y la longitu de los lados, podemos encontrar el área de un triangulo. Recordemos que, si trazamos rectas del centro del hexágono a los vértices, se formaran 6 triángulos equiláteros.

El área de un triángulo es:

$A_{t1}=\frac{b*a}{2}$

b es la longitud de la base (b=3 m)

a es la apotema, osea la altura del triangulo (a = 2.8)

$A_{t1}=\frac{2.8*3}{2}$

$A_{t1}=4.2\: m^{2}$

Ahora, solo debemos mutiplicar ese valor por 6 para determianr el área total de la pared.

$A_{tot}=25.2\: m^{2}$

Espero te haya sido util!

5 0

3 years ago

when solving this, do i take it out of the parenthesis or make it into a square root? because its very confusing.

Licemer1 [7]

Finding the inverse function:

We are given a function y = f(x). To find the inverse function, we exchange x with y in the original function, and then isolate y.

We are given the function:

$f(x)=(x+7)^5$

$y=(x+7)^5$

Changing x with y

$x=(y+7_{})^5$

Now, we have to isolate y. So

$(y+7)^5=x$

We can apply the fifth root to both sides. So:

$\sqrt[5]{(y+7)^5}=\sqrt[5]{x}$ $y+7=\sqrt[5]{x}$ $f^{-1}(x)=y=\sqrt[5]{x}-7$

7 0

1 year ago

I NEED HELP! ASAP, THIS IS SO HARD AND MY BRAIN HURTS, IF U HELP ME WITH OTHER QUESTIONS LIKE THIS ILL GIVE U 50+ POINTS

Dimas [21]

Answer:

24.3

Step-by-step explanation:

We need to follow the order of operations PEMDAS:

Parentheses
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Carry out the operation in the parentheses first:

3³ + 14.7 ÷ 7 - (1.2 × 4)

⇒ 3³ + 14.7 ÷ 7 - 4.8

Now the exponent:

⇒ 3³ + 14.7 ÷ 7 - 4.8

⇒ (3 × 3 × 3) + 14.7 ÷ 7 - 4.8

⇒ 27 + 14.7 ÷ 7 - 4.8

Now, the division (there is no multiplication):

⇒ 27 + 14.7 ÷ 7 - 4.8

⇒ 27 + 2.1 - 4.8

Finally, carry out the addition and subtraction (from left to right)

⇒ 27 + 2.1 - 4.8

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2 years ago

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Galina-37 [17]

Answer:

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