Question 8 D Mr. Chen asked each student in his first-grade class to make one greeting card for every other student in the class. Mr. Chen collected the cards from all the students and correctly counted that he collected 200 cards. If r represents the total number of students in Mr. Chen's class, then each student should have made (x - 1) cards and Mr. Chen should have collected a (aI - 1) cards. Which of the following best explains why it is not possible that each student made the correct number of cards? The equationz (x - 1) = 200 does not have real solutions. B The equationa (x - 1) = 200 has one real solution, but the solution is not an integer. The equationz (z-1) = 200 has two real solutions, but neither of the solutions is an integer. D The equationr (-1) 200 has two real solutions, but one of the solutions is not an integer.

Q: -7 (5x+2) - 7(2 — 10x) = 423 83.80 O 6.44 11.29 O 12.89

A:

Q: = 2+'2 Z1-Z2 O z, +z, O

A: to check which one is correct option of z1+z2 let z=x+iy then  z=x-iy now let z1=x1+iy2 , z2=x2+iy2…

Q: 2. Find the value of x Justify your answer 18

A: Circle property

Q: Which of the following graphs represents (x + 1)² = 8(y - 3)?

A:

Q: 4. Find P7 A. Z = -3.21 B. z = -1.48 C. z = 1.48 D. z = 0.74

A: we had given data  standard normal distribution z~N(0,1) we have to fond 7h percentile

Q: 7. Let ƒ(x) = 4x − 3, g(x) = x² + 4, h(x) = x + 5. Evaluate the following.

A: Given f(x) = 4x - 3 g( x ) = x2 + 4 h( x ) = x + 5

Q: help me

A: x = 46°                 (Corresponding angles are equal)

Q: a = 3, b = 2, A = 50

A: Apply sine rule and angle sum property as shown.

Q: 5.) A number y is multiplied by -0.8. The product is -49. What is the value of y?

A: 1

Q: L K M In AKLM, LM = 7 and mZK = 45. Find KL. Leave your answer in simplest radical form.

A: Consider the triangle  LM=7m∠k=45

Q: 37 2 2 4 4|5 6 8 4

A:

Q: 58 D. 18

A:

Q: 4. (2x² – y² – z)²

A: Use the expansion formula: (a+b+c)2=a2+b2+c2+2ab+2bc+2ca

Q: 2 C 4 6. A 10 3 F 11 20 K 4 ??

A: we have to find missing number

Q: 5:4 equals to

A: we know that  54=2524=108

Q: Compare V18 and 4 your reasoning.

A: Two number 18 and 415

Q: -/(금+) ▲ u2 4

A:

Q: 2 2.4 3. Explain in two different ways why 3 3.4 - =

A: Introduction: Definition 1: A fraction represents a numerical value, which defines the parts of a…

Q: 10.Solve (3\X fore X. 27

A:

Q: Find an equation of the circle having the given center that passes through the given point. The…

A:

Q: Select an Answer 1. -5 20 -30 30 -3 11 -17 14 -4 18 -27 30 -12 18 -18 Select an Answer v 2. 1 -2 1…

A: We have to solve given problem:

Q: Q1. Find A and A-3 ? -5 8 1 A =-3 1 %3D 6. -8 0

A:

Q: 2. (Væ)² – 8 Vã =- 15

A:

Q: YA yt 4 3. 2. D. 4 21 2. 1. Y D B. B.

A:

Q: What number is halfway between 2 () and 4? A. 2 В. 2.5 С. 3 D. 1.5

A: We can answer this question as below

Q: Use the graph of F to find the given limit. When necessary, state that the limit does not exist. lim…

A:

Q: 59. Ee-2n n=0

A:

Q: 1.-5(r+7)= -82 R= ?

A: Given equation is -5(r+7)=-82

Q: Answer any of the choices: 3+j4 -2+j1 equals: 2+j1 5ej5n A- 0; B- 1; C- -1; D- All the above.

A: The given expression is  3+j42+j1*-2+j15ej5π

Q: Hi the solution is in

A: Given claim: Test whether the true mean age of the store's shoppers is over 21. Null Hypothesis:…

Q: which values are less than -3 1. o 2. -2 3. 2 4. -10 5. -4

A:

Q: Find the indicated value. 7! · 3!

A: We know that A factorial is a function that multiplies a number by every number below it.  i.e. The…

Q: 2. x³dx Your answer

A:

Q: What is the value of x? X-6 O A. 3 О В. 9 ОС 15 O D. 30

A: The figure of the triangle is given by To evaluate : The value of x

Q: immediately

A: We will find the integral.

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.