Но: (b) Last year, your company's service technicians took an average of 2.6 hours to respond to trouble calls from business customers who had purchased service contracts. Do this year's data show a different average response time? На: 3. The level of calcium in the blood of healthy young adults follows a normal distribution with mean u = 10 milligrams per deciliter and standard deviation o = 1.2. A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care. The mean of these 100 measurements is x bar = 9.8. Is this evidence that the mean calcium level in the population from which these women come is less than 1O? To answer this, test the hypotheses HO: µ = 10, Ha: µ < 10 at the 5% significance level. (a) What is the value of the test statistic, z? (b) What is the P-value for this test?

Q: Perform the indicated operation. (2 – j3) (4+ j2)

A:

Q: simplify each of the numerical expressions. (-2)3 - 32

A: Given: -23-32

Q: Solve the following equation. 1. 9x x+2 2x2+ Select the correct choice below and, if necessary, fill…

A: First take LCM on the left hand side Now we know denominator term cannot be zero.  So x cannot be 0…

Q: A C 10x-10 12.x - 4 30° B

A:

Q: Find the quantity: -4v + 3w - 2u if v = -6i - j, w = 7i – 5j, and u = -4i + 10j. Enter your answer…

A: Assume x,y,z∈ℝ2 such that : x=a1i+b1j y=a2i+b2j x=a3i+b3j then x+y+z=a1+a2+a3i+b1+b2+b3j . Suppose…

Q: +C, you would enter 2t. vide your answer below:

A:

Q: simplify each of the numerical expressions. (-3)3 + 32

A: Given:           -32+32 In mathematics, a square number or perfect square is an integer that is the…

Q: Solve each equation. 8x2 4x 5 0 0/1 V11 + 1 VII 1

A: In this question we have to solve the quadratic equation.

Q: Say z1=2+15i and z2 = 3-6i, find z1*z2

A: We have to find z1*z2 where z1=2+15i and z2=3-6i

Q: Solve. 3u2 = 30u - 9 u = (Simplify your answer, including any radicals and i as needed. Use integers…

A: Here  quadratic equation so there will be two value of u so use the formula as below t

Q: Solve. Enter onl -7n - 4n = 11 %3D

A:

Q: Perform the indicated operations. If possible, reduce the answer to its lowest terms. 2 + O اني | 96…

A: The given expression .The aim is to simplify the given expression.

Q: 22vx10 4Vx11 2 120 3x 1+ V5 V5 V3 1- V2' B (Ctrl) ►

A: This problem is of application of mathematics. By using the simple formula of surds and indices we…

Q: ha)= ZX-3x?-5x+6 2x+6 Find the Jeros.

A:

Q: Perform the indicated operations and express the result in simplest form. (3-J3)(4+j5) (6+j2)(4-j5)

A:

Q: Solve, The solution is x =. (Type an integer or a simplified fraction. Use a comma to separate…

A:

Q: V3a 2/12a and 6.Which of the following is the product of the radicals A. 12va B. 12a C. 8a D. 2/36a

A: Given that 212a and 3aproduct =212a×3aproduct =236a2product =2×6a=12a

Q: simplify each of the numerical expressions. (3 + 4)2

A: Consider the expression: 3+42……1

Q: V16 16.Which of the following is the product of the radicals and ? A. 4 В. V8 с. V36 C. D.

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.