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2 years ago

What is the solution to this system? 8

Mathematics

1 answer:

hoa [83]2 years ago

8 0

Answer:

(2,2)

Step-by-step explanation:

The solution to a system is the point on the graph where both lines intersect.

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The answer of this 3*(-7) is -21

irinina [24]

Yes, you are correct. The answer of 3*(-7) = -21

6 0

3 years ago

Expand it (2/7z -3/5x)2

svet-max [94.6K]

( 2 / 7 z - 3 / 5 x ) 2

3 0

3 years ago

Simplify. (√5+4) (√5 - 2)

son4ous [18]

Answer:

2√5 - 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients
Expand by FOIL

Step-by-step explanation:

Step 1: Define

Identify

(√5 + 4)(√5 - 2)

Step 2: Simplify

Expand [FOIL]: (√5)² - 2√5 + 4√5 - 8
Combine like terms: (√5)² + 2√5 - 8
Evaluate exponents: 5 + 2√5 - 8
Combine like terms: 2√5 - 3

6 0

2 years ago

Read 2 more answers

7x-2y=16 11x+6y=32.3 how to solve this math problem

Aneli [31]

Answer:

Step-by-step explanation:

These types of equations are called simultaneous equations and the method we can use to solve these type of equations is either Substitution, Elimination and Graphing.

We use substitution here because it is easier.

Equation 1

$7x-2y=16$

Equation 2

$11x+6y=32.3$

Lets take equation 1

$7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}$

This is our equation 3 , now put it inside equation 2.

$11x+6y=32.3\\11(\frac{16+2y}{7} )+6y=32.3\\\frac{176+22y}{7} +6y=32.3\\\frac{176+22y+42y}{7}=32.3\\176+22y+42y=226.1 \\\\42y+22y=226.1-176\\64y=50.1\\y=\frac{50.1}{64} \\y=0.783\\$

We found the value of y , now to find the value of x insert the value of y in equation 3

$x=\frac{16+2y}{7}\\x=\frac{16+2(0.783)}{7} \\x=\frac{16+1.566}{7}\\x=\frac{17.566}{7}\\x=2.509$

Solved ! See the attached image on both the straight line graphs i have attached for better understanding. Where both the lines intersect each other is our value of (x , y) respectively.