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2 years ago

Simplify.

Mathematics

2 answers:

MakcuM [25]2 years ago

8 0

Answer:

you just need to simplify all the answers so 9 and 4 - 6 + 2 + 3 you need to keep like adding all the answers together and whatever one gets you to what it's telling you then that's the answer

Step-by-step explanation:

I'm sorry if this doesn't make sense but I hope it helps

vlada-n [284]2 years ago

7 0

Answer:

Let's simplify step-by-step. 5n2−4n+6+4n2−2n−3

=9n2−6n+3

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0.45 plus 9x equals 27

oee [108]

Answer:

x = 2.95

Step-by-step explanation:

Step 1: Convert words into an expression

0.45 plus 9x equals 27

0.45 + 9x = 27

Step 2: Solve for x

0.45 + 9x - 0.45 = 27 - 0.45

9x / 9 = 26.55 / 9

x = 2.95

Answer: x = 2.95

7 0

3 years ago

Read 2 more answers

P(x)=Third-degree, with zeros of −3, −1, and 2, and passes through the point (1,12).

Mila [183]

Answer:

The polynomial is:

$p(x) = -x^3 - 2x^2 + 5x + 6$

Step-by-step explanation:

Zeros of a function:

Given a polynomial f(x), this polynomial has roots $x_{1}, x_{2}, x_{n}$ such that it can be written as: $a(x - x_{1})*(x - x_{2})*...*(x-x_n)$ , in which a is the leading coefficient.

Zeros of −3, −1, and 2

This means that $x_1 = -3, x_2 = -1, x_3 = 2$ . Thus

$p(x) = a(x - x_{1})*(x - x_{2})*(x-x_3)$

$p(x) = a(x - (-3))*(x - (-1))*(x-2)$

$p(x) = a(x+3)(x+1)(x-2)$

$p(x) = a(x^2+4x+3)(x-2)$

$p(x) = a(x^3+2x^2-5x-6)$

Passes through the point (1,12).

This means that when $x = 1, p(x) = 12$ . We use this to find a.

$12 = a(1 + 2 - 5 - 6)$

$-12a = 12$

$a = -\frac{12}{12}$

$a = -1$

Thus

$p(x) = -(x^3+2x^2-5x-6)$

$p(x) = -x^3 - 2x^2 + 5x + 6$

6 0

3 years ago

1 point

V125BC [204]

Answer:

10. answer= 3

Q11 answer = -3

Step-by-step explanation:

Q10.

-3x+9-x+9=3x-3

or, -4x+18=3x-3

or, 3x+4x=18+3

or, 7x=21

or, x=3 answer

Q11.

1.8-3.7x= -4.2x+0.3

or, 4.2x-3.7x=0.3-1.8

or, 0.5x= -1.5

or, x=-3 answer

5 0

3 years ago

At a farm, the average number of chickens, ducks, rabbits and sheep is 315 per type of animal. The average number of chickens, d

Greeley [361]

The average number of chickens, ducks, rabbits and sheep = 315 per type of animal.

The average number of chickens, ducks and rabbits = 320 per type of animal.

The number of sheep is 60 more than the number of rabbits.

Let us assume number of rabbits = x.

Number of sheep is 60 more than number of rabbits, that is = x+60.

There are half as many ducks as there are rabbits.

Therefore, number of ducks = x/2.

Let us assume number of chickens = y.

Adding number of chickens, number of rabbits, number of sheep and number of ducks and dividing by 4 (because those are four types of animal).

$\frac{y+x+x+60+x/2}{4} = 315$

Multiplying both sides by 4, we get

y+x+x+60+x/2 = 1260

Subtracting 60 from both sides

y+x+x+60-60+x/2 = 1260-60

y+x+x+x/2 = 1200.

Combining like terms .

y + 5x/2 = 1200

Multiplying both sides by 2, we get

2y +5x = 2400 ------------equation (1)

Adding number of chickens, number of rabbits and number of ducks and dividing by 3 (because those are three types of animal).

$\frac{y+x+60+x/2}{3} = 320$

Multiplying both sides by 3, we get

y+x+60+x/2 = 960

Subtracting 60 from both sides

y+ x+x/2 = 900

Combining like terms .

y+ 3x/2 = 900

Multiplying both sides by 2, we get

2y+3x = 1800 --------------------equation (2)

Multiplying first equation by 3 and second equation by -5, we get

(2y +5x = 2400 ) * 3 => 6y +15x = 7200

(2y+3x = 1800) *-5 =>

Adding

6y +15x = 7200

-10x + -15x = -9000.

_________________

-4y = -1800.

Dividing both sides by -4, we get

y=450.

<h3>Therefore, number of chickens are 450 there at the farm.</h3>

7 0

4 years ago

Jones Middle School is taking a field trip to Baltimore, Maryland. Six buses will hold 150 students. How many buses will be need

shepuryov [24]

I think the answer is 11 buses

6 0

3 years ago

Read 2 more answers