Factor the expression completely. -21x^3+3x

Answer:

1.i dont know 2. we rock

Answer:

y=  -69/8  (negative 69 over 8)

Step-by-step explanation:

First, you have to simplify both sides of the equation:

[tex]-2/3y+ -3/4 =5[/tex]

Second, add 3/4 to both sides:

-2/3y +-3/4 + 3/4=5 +3/4

-2/3y= 23/4

Next, multiply both sides by 3/(-2) (3 over -2)

(3/-2)*(-2/3y)= (3/-2) * (23/4)

y= -69/8

Answer:

6.6

Step-by-step explanation:

Answer:

its either b or c but I'm pretty sure its b

Step-by-step explanation:

Good luck

Question 1=  $7,620

Question 2 (a) $3,211

Question 2 (b) $9,828

Answer:

− 2161

Step-by-step explanation:

Subtract  67  from -2094

If you want me to show work, let me know!

Answer:

The answer is 5

Step-by-step explanation:

3+2=5

Answer: -4

Step-by-step explanation: Hello! :) To get started we need to use the equation 7x+3=4x-9, First, we need to subtract 4x from both sides to get 3x+3=-9, then we need to subtract 3 on both sides to get 3x=-12, Finally, we need to divide both sides by 3 to get x = -4. So x = -4.

Hope this helps!

Please consider marking Brainliest I am 1 away from 50!

Answer:

C is not in scientific notation

Step-by-step explanation:

Answer:

c's not

Step-by-step explanation:

Answer:

48

Step-by-step explanation:

she gives 4 pieces to 12 friends. so all you have to do it multiply 12 by 4

Answer:  She brought 48 pieces of candy to school.

Step-by-step explanation:

12 times 4 is 48.

Answer:

sor

Step-by-step explanation:

Answer:

15 hours

Step-by-step explanation:

Answer:

What relationship??

Step-by-step explanation:

Answer:

170 tickets were sold in advance

Step-by-step explanation:

Let x represent the = number of tickets sold at the door.

Let y represent the = number of tickets sold in advance

Tickets to a school play cost $2 if bought in advance and $3 at the door. By selling all 400 tickets, $1,030 was

collected.

Hence, we have two equations

x + y = 400 tickets

$3 × x + $2 × y = $1,030

x + y = 400.... Equation 1

x = 400 - y

3x + 2y = 1030........ Equation 2

Substitute 400 - y for x in Equation 2

3(400 - y) + 2y = 1030

1200 - 3y + 2y = 1030

Collect like terms

-y = 1030 -1200

-y = -170

y = 170

Since y represent the number of tickets sold in advance, therefore, 170 tickets were sold in advance.

Answer: It is a vertical COMPRESSION

Step-by-step explanation:

"The graph of function g is a vertical compression of the graph of function f"... I just took the test. It's NOT B. Hope this helps!

Answer:

c

Step-by-step explanation:

Answer:

11/20 or 99/180 days

Step-by-step explanation:

55/100 converted to ?/180

180/100=1.8

so you would do the same on the numerator which is 55*1.8=99

99/180= 33/60=11/20

Answer:

125

Step-by-step explanation:

Answer:

The equation of the line perpendicular to AC and passing through point B is y = -x + 4

Step-by-step explanation:

We start by finding the slope and equation of line AC

The equation of a straight line can be given as;

y = mx + c

where m is the slope and c is the y-intercept

Mathematically, the slope is given as;

m = (y2-y1)/(x2-x1)

m = (7-2)/(2-(-3)) = 5/5 = 1

So the equation becomes ;

y = x + c

We only need the slope since we are trying to get another line perpendicular to this

If two lines are perpendicular, then the product of the slopes of both lines is equal to -1

This means that m1 * m2 = -1

So this means that the slope of the perpendicular line is -1/1 = -1

Thus, the equation of the line we are finding would be;

y = -x + c

since it passes through line B, we can make a substitution of the coordinates of point B

That would be;

7 = -(-3) + c

7 = 3 + c

c = 7-3

c = 4

So the equation of that line is;

y = -x + 4 or simply y = 4-x

Answer:

13.5

Step-by-step explanation:

Step 1:

x - 16 = 3x + 11      Equation

Step 2:

- 16 = 2x + 11     Subtract x on both sides

Step 3:

- 27 = 2x     Subtract 11 on both sides

Step 4:

x = - 27 ÷ 2

Answer:

x = 13.5

Hope This Helps :)

Answer:

[tex]x = -\frac{27}{2}[/tex]

Step-by-step explanation:

I hope this helps!

Answer:

28

Step-by-step explanation:

Step 1:

1/4x - 5 = 2       Equation

Step 2:

1/4x = 7     Add 7 on both sides

Step 3:

x = 7 ÷ 1/4     Divide

Answer:

x = 28

Hope This Helps :)

Answer:

28

Step-by-step explanation:

I hope this helps!

the answer will be D.

Answer:

D

Step-by-step explanation:

According to Newton's second law of motion, mass is inversely proportional to acceleration. As mass increases, acceleration decreases and the opposite.

Answer:

0.4%

Step-by-step explanation:

(20/5000)x100

2/5=.4%

Answer:

see below

Step-by-step explanation:

[tex]\sqrt{2}\approx 1.41\\\\\sqrt{3}\approx1.73\\\\\sqrt{4}=2\\\\\sqrt{5}\approx2.23\\\\\sqrt{6}\approx2.44\\\\[/tex]

so we can say

[tex]1.36<\sqrt{2}<2.45\\\\1.65<\sqrt{3}<2.34\\\\1.65<\sqrt{4}<2.34\\\\2.16<\sqrt{5}<3.45\\\\2.41<\sqrt{6}<3.56[/tex]

that's the smalles possible intervals I could find, i don't know if those are the smalles, but those are what I found

Answer:

12

Step-by-step explanation:

divide 48 by 4 and the answer should be 12, that is the cost per ticket.

Answer:

Each ticket cost $12

Step-by-step explanation:

So we can say:

4x = $48

we can divide each side by 4 and get:

x = $12

Hope that helps!!

Answer:

Step-by-step explanation:

Y=-1/7x-30/7

Answer:

43 degrees. b and the other angle being compared too are vertical angles- vertical angles are AND have to be identical to each other.