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4 years ago

Please someone help who is actually good at math

Mathematics

2 answers:

lana66690 [7]4 years ago

8 0

-36p+23q-10r hope this helps

Alex17521 [72]4 years ago

4 0

Answer:

-36p+23q-10r

Step-by-step explanation:

It just says to simplify, meaning you just need to combine like terms.

-5 x 9p = -45p

-5 x -4q = 20q (negatives cancel out each other)

-5 x 2r = -10r

after that you combine like terms:

9p + (-45p) = -36p

3q + 20q = 23q

there is no other term that can go into r, so you just leave it as it is.

so the final answer comes to -36p+23q-10r

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Write the number equal to 7 tens and 3 ones

Andru [333]

7 tens and 3 ones = 73

7 0

3 years ago

Read 2 more answers

The function f(x)f(x) is a quartic function and the zeros of f(x)f(x) are -6−6, -5−5, -2−2 and 11. Assume the leading coefficien

Luden [163]

<h2>Answer: </h2>

$\boxed{f(x) = 11x^4 + 22x^3 - 1001x^2 - 5632x - 7260}$

<h2>Explanation: </h2>

A quartic function is a function given by the the following equation in standard form:

$f(x)=a_{4}x^4+a_{3}x^3+a_{2}x^2+a_{1}x+a_{0} \\ \\ \\ Where: \\ \\ a_{4},a_{3},a_{2},a_{1},a_{0} \ \text{are constant} \\ \\ \text{and} \ a_{4} \ \text{is the leading coefficient}$

From the statement we must assume the leading coefficient of f(x) is 11, so:

$a_{4}=11$

The zeros are:

$x=-6 \\ \\ x=-5 \\ \\ x=-2 \\ \\ x=11$

So, we can write:

$f(x)=11(x-(-6))(x-(-5))(x-(-2))(x-11) \\ \\ \\ So: \\ \\ \mathrm{Rule}:-\left(-a\right)=a \\ \\ \\ Then: \\ \\ f(x)=11\left(x+6\right)\left(x+5\right)\left(x+2\right)\left(x-11\right)$

$Expand:\left(x+6\right)\left(x+5\right):\ x^2+11x+30: \ \text{Distributive Property} \\ \\ \\ Then: \\ \\ f(x)=11\left(x^2+11x+30\right)\left(x+2\right)\left(x-11\right) \\ \\ \\ Expand:\left(x^2+11x+30\right)\left(x+2\right):\ x^3+13x^2+52x+60: \ \text{Distributive Property} \\ \\ \\ Then: \\ \\ f(x)=11\left(x^3+13x^2+52x+60\right)\left(x-11\right)$

$Expand: \left(x^3+13x^2+52x+60\right)\left(x-11\right):\ x^4+2x^3-91x^2-512x-660 \\ (Distributive \ property)$

Finally:

$f(x) = 11(x^4 + 2x^3 - 91x^2 - 512x - 660) \\ \\ \boxed{f(x) = 11x^4 + 22x^3 - 1001x^2 - 5632x - 7260}$

3 0

3 years ago

What is 63 - x equals 2x + 3

Lyrx [107]

Answer: x=20

Step-by-step explanation:

63-x=2x+3

-x-2x+63=3

-x-2x=3-63

-3x=3-63

-3x=-60

-3x/3=-60/3

X=20

please mark me brainliest!!

4 0

3 years ago

Which equation represents the model shown below

Alona [7]

Answer:

-4x - 3 = -8

Step-by-step explanation:

On our left, we have -x in 4 places = 4(-x) = -4x

And on the left, we also have -1 in 3 places = 3(-1) = -3

Altogether in our left, we have: -4x +(-3)

That is: -4x - 3

On our right, we have -1 in 8 places, which is 8(-1) = -8

Therefore, the equation that represents the model would be:

-4x - 3 = -8

6 0

3 years ago

3) Find the equation of a line perpendicular to y = -3x + 7 that goes<br> through the point (-1, 2)

Alchen [17]

Step-by-step explanation:

In order to find the new equation I used the following formula :

y - y1 = m (x -x1)

* x1 & y1 are the coordinates of the given point

If you have any questions about the way I solved it, don't hesitate to ask me in the comments below ;)

6 0

3 years ago