Q and A for the topic: General

2x-6x

2x6+7-5+7x8

Add 2+2

The predicted growth rate per year of population of a certain small city is given by 40000/ (t+2)^2, where t = n° of years counted from now in the long term, that is (i.e., when t → ∞ ), what is the expected change in the population from the current level?

Consider the following initial value problem  y 0 (t) = 3y − 2 cos(t) − 7 y(0.50) = 2 . An estimate of y(0.70), obtained by applying once the Taylor method of order 2 is: a. 1.508966975 b. 1.302834090 c. 0.1270954503 d. 1.468143997

20.- In the following equation; What is the species that oxidizes: 2MnO2+8HCl→2MnCl2+2Cl2+4H2O a) Mn b) OR c) Cl d) H

16.- A byproduct of the reaction that inflates automobile air bags is sodium, which is very reactive and can ignite in air. The sodium produced during the inflation process reacts with another compound added to the bag's contents, KNO3, according to the reaction: 10Na + 2KNO3 → K2O + 5Na2O + N2 How many grams of KNO3 are needed to remove 5 g of Na? a) 11g b) 4.4g c) 2.2g d) 1.0g

At the city museum, child admission is $5.10 and adult admission is $8.20. On Thursday, three times as many adult tickets as child tickets were sold, for a total sales of $1069.20. How many child tickets were sold that day?

Find the general equation of the line that passes through the points 𝑃 1(−5 , 7) and 𝑃2(4 , 2)

Write the continuous equation given by the line that passes through A=(4.5) and B=(0.9)

Write the general equation of the line that passes through P=(2, -5) and has slope m=-4

An A572 steel beam has a modulus of elasticity of 28,150 ksi and a Poisson's ratio of 0.26. It is known that the beam is embedded in one of its supports and free in its second support. Furthermore, a horizontal axial compressive stress of -235 MPa is known. a) Determine the magnitude(s) necessary in Y so that the unitary deformation of the beam does not exceed a value of 2 x 10⁻⁴ in this direction.

-A police department purchases new patrol cars worth $250,000 each. It is estimated that its useful life will be 5 years, at the end of which its value waste will be $30,000.00 a) Determine the depreciation rate b) Determine the annual depreciation by the fixed percentage method. c) Prepare the depreciation table

In a corporation that recognizes interest at 12% per year, compounded every 4 months, a Person saves Q15,000 today, Q8,000 in 2 years and Q9,000 in 7 and a half years. Prepare the time-value graph and indicate how much money you will have saved if you withdraw it everything within 8 years? Step by Step

I prepared the time and value graph and answer what is requested: today 05/15/2024 you tells your creditor that you want to cancel all your obligations (debts), some expired and others are about to expire. How much should you pay in total today 05/15/2024 if for the operation is agreed upon a simple interest rate exact method of 4.5% quarterly? The debts you have with their respective due dates are listed below: a) Q 7,800.00 due on 01/08/2024. b) Promissory note issued for Q5,600.00 on 01/25/2024, accrues interest of 13% annually, expired 05/01/2024. c) Promissory note issued for Q 10,600.00 on 01/06/2024 that accrues an interest rate simple method of 12% annual obligations, expires on 10/27/2024. d) Q 6,500.00 that expires on 11/19/2024.

The following information relates to questions 7-9 The following balances were extracted from the books of Peter Moses a sole trader on December 31, 2018; $ Sales 9,600,000 Return inwards 100,000 Return outwards 70,000 Carriage inwards 150,000 Purchases 3,820,000 Stock at 1.1.2018 1,500,000 Stock at 31.12.2018 2,000,000 What is the Cost of Sales? Question 7Answer a. 5,400,000 b. 3,400,000 c. 7,200,000 d. 8,400,000

A = 2•3 + 3•4 + 4•5 + ... + 11 • 12 If the second factor of each term in the sum is increased by 1, how much does the number A increase? A) 63 B) 64 C) 65 D) 66 E) 68

How much K2Cr2O7 must be weighed and dissolved in distilled water to prepare 250 mL of a 2 mol/L solution?

What is the concentration in g/L of a NaOH solution prepared with 2.5 g in 500 mL? Physiological serum is prepared with 0.9% NaCl, what mass of NaCl is required for the prepare 500 mL of serum? It is desired to prepare 500 mL of washing acid (HCl 0.1 mol/L). What is the volume of this Is acid necessary? (Data: d = 1.19 g/mL and 37% purity). An aqueous solution of nitric acid (HNO3) has a concentration of 25 g/L. Determine the mass of acid present in 500 mL of solution and in % (m/v)? What type of interaction is there between the molecules below: a) CH4 and CH4 b) H2O and H2O c) HCl and HCl Of the following molecules, make the Lewis representation and provide the molecular geometry and its polarity. a) H2O b) CO2 c) NH3

determine the volume of the solid of revolution formed by rotating the region limited by the graphs y1= x+2; y2=x; x=0 and x=3 around the x axis