7-8 - Yes or No? If No, give a reason. 7. Is the expression V4a² necessarily equal to 2a? 8. Is the expression Va² + 4 necessarily equal to a + 2?

Q: 2. If x = -2, the value of the expression 3x? - 5x + - is - (pp. A6-A7)

A: 3x2-5x+1x Put x=-2, we get 3x2-5x+1x=3-22-5-2+1-2=12+10-12=22-12=432

Q: Which expression has a a value of 12? -144 A. -12 36 B. 3 C. 2(-6) D. -3(4) O A OB O D

A:

Q: a. 7+23 d. 2.62 f. -3 b. 9.31 8• (4) е. (: 5) g. С. 20-24

A:

Q: There are 3 trails to the top of a mountain. In how many ways can a person hike up and down the…

A: The given data is as follows:There are total 3 trails (1, 2 and 3) which are to be used for hiking…

Q: 13. Ken had a sum of money, He spent $715 on a mobile phone and of the remainder on a pair of…

A: First we will form the equations corresponding to the given statements then solving these equations…

Q: 2 + 7? ? 2 − 5? + ? 2 − 4? ? 2 − 5

A: We need to simply some given question.

Q: Evaluate the expression.

A: Given-411-2-193+16 -5-134013+75-9-16-1=-411-2-193+16 -5+7-1+53+(-9)4+(-1)0+613+(-1)=-411-2-193+16…

Q: |? − 3| + 9 = 7

A:

Q: Evaluate the following expression. 4²-2(-13)(1) 2

A:

Q: 1. A vector in three dimensions can be written in either of two forms: in coordinate form as v =…

A: A vector in three dimensions can be written in either of two forms: In coordinate form as v=a1, a2,…

Q: O -1 -1 1. A = 2 0 and C = -1 1 -1 2 -1 4A + 0.5C

A:

Q: Which two expressions beow are equivalent to 4 + 36 – 2(b– 2) – a? O 4+ 36 – 2b + 4 – a O 4+ 36 – 2b…

A: The expression is  4 + 3b -2(b - 2) - a

Q: 10y + 11y - 8y ² – 8y?

A:

Q: Evaluate the following expression. 27 5 27 5 +(-9) 20-4 +(-9) 20-4 = (Simplify your answer.)

A: To evaluate the following expression.

Q: Find, if possible, (a) AB and (b) BA.

A: (a) Consider the given matrices A and B. As the number of the rows is equal to the number of columns…

Q: Give an example of the associative property of addition of whole numbers. Choose the correct answer…

A:

Q: 3. a. b. 1 124 1 12⁹ Which of the following is equivalent to the expression 124 x c. 12⁹ d. 12²…

A: Here we have to find the equivalent expression.

Q: 3. Identify whether the given is an expression or a sentence. a. π>3 b. x+ 6 = 6+x с. 10x + 5

A: To identify the given is an expression or a sentence.

Q: 19. Jimmy's age is three years more than six times Michelle's age. Jimmy's age can be represented by…

A: We can answer the question as below.

Q: Which diagram represents the expression |-5|? 5 units 6 5 -4 -3 -210 1 2 3 4 5 6 10 units HII 6 -5…

A:

Q: 8 17 a² + b² = c²

A: 1. The Pythagorean formula is stated as follows:

Q: 5.) Evaluate the expression below. 21 -3 x -5 ÷ -7 A. -7 B. -5 C. 5 D. 7

A: Given query is to find the value of the expression.

Q: Simplify the expression. 1 1 5 4 8 2 5)2 1 1 5 (Type an integer or a fraction.) + + -- -- 8. 4. 8 2

A: Given : 582+14+18·52

Q: Find 52 + 48 + 44 .. + 0 + -4 + -8.

A: The given sequence is 52+48+44+...+0+ -4+ -8. Here, the first term is a=52. Clearly, the difference…

Q: An octopus has 8 legs, and you will put 10 signs to his legs. How many different ways can you label…

A: This question is related to permutations and combinations, we will solve it by following the…

Q: What is the value of the expression -11 + 24 + (-32) O -67 О-19 О 19 O 67

A: Given, The expression -11+24+-32 We have to find the value of the expression.

Q: 30+20÷(-5) 32-7

A: Given:

Q: What algebraic expression is equivalent to four more than negative eight times a number? a-8x +4…

A: A statement can be converted to an equation by first denoting the unknowns in the problem by…

Q: 1. An expression is shown below. -9+(-23) - Which is the correct solution to the expression? A. 32…

A: Given Expression is: -9+(-23)=

Q: 3. Show all your steps to evaluate 3 -0.5 -2 -2 a) 16 (16)² + 2² - (²) ² - b) +3

A:

Q: Which expression shows the number of games in a sports league with 18 teams, if every team plays…

A: We have to find number of games in a sports league with 18 teams, if every team plays every other…

Q: Evaluate each expression for s = 4 andt 8. (s + t)3 53 + t? +s +2 7. 8. 9. 2st? - s? 10. (t-s)3

A:

Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.