Answer:
10
Step-by-step explanation:
2x+46+3x-6 = 90
5x + 40 = 90
5x = 50
x =10
Answer:
7.2
Step-by-step explanation:
distance between the two points. (1, 2), (7, 6) = √(x-x')²+(y-y')²
d = √(7-1)²+(6-2)² = √52 = 7.2
The correct sentences that represent the inequality are as follows;
The sum of 2.1 and –1.2 times a number is at least 8.
The sum of 2.1 and –1.2 times a number is greater than or equal to 8.
The sum of 2.1 and –1.2 times a number is a minimum of 8.
<h2>Given </h2>
Inequality; ![\rm 2.1 + (-1.2x) \geq 8](https://tex.z-dn.net/?f=%5Crm%202.1%20%2B%20%28-1.2x%29%20%5Cgeq%20%208)
<h3>What is inequality?</h3>
When two real numbers or two algebraic expressions are represented with symbols like <, > or ≤, ≥ they can be called an inequality.
Inequality; ![\rm 2.1 + (-1.2x) \geq 8](https://tex.z-dn.net/?f=%5Crm%202.1%20%2B%20%28-1.2x%29%20%5Cgeq%20%208)
The correct sentences that represent the inequality are as follows;
- The sum of 2.1 and –1.2 times a number is at least 8.
- The sum of 2.1 and –1.2 times a number is greater than or equal to 8.
- The sum of 2.1 and –1.2 times a number is a minimum of 8.
To know more about Inequality click the link given below.
brainly.com/question/432376
Answer:
A
Step-by-step explanation:
She has 2 more nickels then dimes not 2 times more therefore answers B and D are incorrect. C is incorrect because it has that there are 2 more dimes than nickels. A is correct because it says that there are c dimes, and then c +2 nickels.
Answer:
(-3/2, -11/2)
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Equality Properties
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define Systems</u>
y = x - 4
y = 4x + 2
<u>Step 2: Solve for </u><em><u>x</u></em>
<em>Substitution</em>
- Substitute in <em>y</em>: x - 4 = 4x + 2
- Isolate <em>x </em>terms: -4 = 4x + 2
- Isolate <em>x</em> term: -6 = 4x
- Isolate <em>x</em>: -3/2 = x
- Rewrite: x = -3/2
<u>Step 3: Solve for </u><em><u>y</u></em>
- Define equation: y = x - 4
- Substitute in <em>x</em>: y = -3/2 - 4
- Subtract: y = -11/2