8=56
7=42
6=30
5=20
3=?
What does 3 equal?

Answers

Answer 1

Answer: $8x=56$
$x=7$

$7x=42$
$x=6$

$6x=30$
$x=5$

$5x=20$
$x=4$

From these numbers, you can see there is a pattern. You have to multiply your first number by another number that decreases by one each time.
Knowing this, you can solve for what 3 equals.

$3(4-1)$
$3(3)$
$9$

$3=9$

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For the graph below, what should the domain be so that the function is at least 200? graph of y equals minus 2 times the square of x plus 30 times x plus 200

0 ≤ x ≤ 15

−5 ≤ x ≤ 20

all real numbers

x ≥ 0

Answers

y = 2x² + 30x + 200
y = 2(x² + 15x + 100)

x² = x*x
100 ⇒ 1 x 100 ; 2 x 50 ; 4 x 25 ; 5 x 20 ; 10 x 10

200 = 2x² + 30x + 200
0 = 2x² + 30x + 200 - 200
0 = 2x² + 30x + 0
0 = 2(x² + 15x + ?)

−5 ≤ x ≤ 20

Answer: −5 ≤ x ≤ 20

Step-by-step explanation:

What is the slope of a line perpendicular to the line whose equation is y = 2x + 5?A. slope = -1
B. slope = -1/2
C. slope = -2

Answers

B = -1/2
I hope that helps

Answer:

-1/2

I hope that helps

Step-by-step explanation:

What is the value of the system determinant for the following system of equations? 6x + y = 4 5x + y - 7 = 0

Answers

Answer: The value of the determinant is 1.

Step-by-step explanation: The given system of linear equation is as follows:

$6x+y=4~~~~~~~~~~~~~~~~(i)\n\n5x-y-7=0\n\n\Rightarrow 5x-y=7~~~~~~~~~~~(ii)$

The first column of the determinant gives the coefficients of 'x' and the second column gives the coefficients of y in the two equations.

Therefore, the determinant for the given system is

$D=\begin{vmatrix} 6& 1\n 5& 1\end{vmatrix}=6* 1-5* 1=6-5=1.$

Thus, the required value of the determinant is 1.

Jerome is writing a number in scientific notation. The number is greater than one million and less than ten million. What will be the exponent in the number Jerome writes?PLEASE HELP!!!!(by that i mean i want the answer)

Answers

The exponent in the number Jerome writes will be anywhere between 6 to 7.

What is inequality?

It is defined as the expression in mathematics in which both sides are not equal they have mathematical signs either less than or greater than known as inequality.

We have:

Jerome is writing a number in scientific notation.

Let's suppose the number is x

The number x is greater than one million and less than ten million.

In scientific notation:

$\rm 10^6\leq x\leq 10^7$