How many of 8ft 2x4 needed for plates

both the red and blue line segments stretch from the center of the circle to a point on the circle. the legth of the blue line s

stiv31 [10]

Answer:

7.5

Step-by-step explanation:

It is longer than 5, so cross 2.5 and 5 out, 10 is too big, so 7.5 is the correct answer

4 0

3 years ago

What is the solution to this equation: 7m to the 2 power + 6m - 1 = ?

Mumz [18]

Answer:

7m² + 6m - 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Combining Like Terms
Standard Form: ax² + bx + c = 0

Step-by-step explanation:

Step 1: Define expression

7m² + 6m - 1

Step 2: Simplify

The expression cannot be simplified further.

5 0

3 years ago

76 POINTS IF YOU CAN ANSWER THIS!!!The amount of water an electric dishwasher uses to wash dishes varies directly with the numbe

Vladimir79 [104]

Answer:

80

Step-by-step explanation:

Since you need 10 loads you know that for 4 loads you use 32 gallons. And to go from 4 to 10 you divide 10 and 4 to get an answer of 2.5. So all you have to do is multiple 32 gallons by 2.5 to then get an answer of 80.

5 0

3 years ago

Read 2 more answers

A new 70-inch tv is on sale. With sales tax 5%, the cost of the tv is $3150. What is the purchase

SVETLANKA909090 [29]

$x - 0.05x = 3150 \\ 0.95x = 3150 \\ x = 3315$

4 0

3 years ago

The augmented matrix of a system of equations has been transformed to an equivalent matrix inâ€‹ row-echelon form. Usingâ€‹ x, y

jenyasd209 [6]

Answer: The system of equations is:

x + 2y + 2 = 4

y - 3z = 9

z = - 2

The solution is: x = -22; y = 15; z = -2;

Step-by-step explanation: ONe way of solving a system of equations is using the Gauss-Jordan Elimination.

The method consists in transforming the system into an augmented matrix, which is writing the system in form of a matrix and then into a Row Echelon Form, which satisfies the following conditions:

There is a row of all zeros at the bottom of the matrix;
The first non-zero element of any row is 1, which called leading role;
The leading row of the first row is to the right of the leading role of the previous row;

For this question, the matrix is a Row Echelon Form and is written as:

$\left[\begin{array}{ccc}1&2&2\\0&1&3\\0&0&1\end{array}\right]$ $\left[\begin{array}{ccc}4\\9\\-2\end{array}\right]$

or in system form:

x + 2y + 2z = 4

y + 3z = 9

z = -2

Now, to determine the variables:

z = -2

y + 3(-2) = 9

y = 15

x + 30 - 4 = 4

x = - 22

The solution is (-22,15,-2).

4 0

3 years ago