$MathMaster logo$

MathMaster

Home
general
5x 13 7x 10 99

Question

5x+13+7x-10=99

297

likes

1483 views

Answer to a math question 5x+13+7x-10=99

$Expert avatar$

4.5

108 Answers

$12x+13-10=99$

$12x+3=99$

$12x=99-3$

$12x=96$

$x=8$

Frequently asked questions (FAQs)

How many ways are there to arrange the letters in the word "MATH" if the first letter must be "M"?

+

Math question: Given the sides of a triangle as 7 cm, 9 cm, and 12 cm, find the area using Heron’s Formula.

+

What is the surface area of a cylinder with radius 3 cm and height 8 cm?

+

New questions in Mathematics

If you have a bag with 18 white balls and 2 black balls. What is the probability of drawing a white ball? And extracting a black one?

How many percent is one second out a 24 hour?

An electrical company manufactures batteries that have a duration that is distributed approximately normally, with a mean of 700 hours and a standard deviation of 40 hours. Find the probability that a randomly selected battery has an average life of less than 810 hours.

Suppose 50% of the doctors and hospital are surgeons if a sample of 576 doctors is selected what is the probability that the sample proportion of surgeons will be greater than 55% round your answer to four decimal places

How many different ways can a psychology student select 5 subjects from a pool of 20 subjects and assign each one to a different experiment?

Determine the minimum degree that an algebraic equation can assume knowing that it admits 2 as a double root and -i as a triple root

There were no defectives in a sample of 1 light bulb does this sample provide sufficient evidence that in the warehouse with millions of light bulbs fewer than 10% are defective?

Primes are numbers divisible only by 1 and themselves; There are infinitely many prime numbers and the first ones are 2, 3, 5, 7, 11, 13, 17, 19, 23, .... Consider a 12-sided die, with the faces numbered from 1 to 12. Out of 4 rolls, the probability that only the first three numbers are primes is:

Solve : 15/16 divide 12/8 =x/y

The points (-5,-4) and (3,6) are the ends of the diameter of the circle calculate subequation

Quadratic equation 2X = 15/X + 7

At the dance there are 150 boys the rest are girls. If 65% are girls what is the total amount in the room

Find the minimum value of the function y = -4 x3 + 60 x2 -252 x + 8 for values of x between x = 0 and x = 9 Enter the value of the function, not the value of x

7.57 Online communication. A study suggests that the average college student spends 10 hours per week communicating with others online. You believe that this is an underestimate and decide to collect your own sample for a hypothesis test. You randomly sample 60 students from your dorm and find that on average they spent 13.5 hours a week communicating with others online. A friend of yours, who offers to help you with the hypothesis test, comes up with the following set of hypotheses. Indicate any errors you see. H0 :x ̄<10hours HA : x ̄ > 13.5 hours

To find the increased amount on a standard term deposit with the following conditions: starting amount: BGN 13000, type of deposit: annual, annual compound interest rate: 1.4%, after 4 years;

If sin A=0.3 and cos A=0.6, determine the value of tan A.

A post office has three categories of letters: 60% are from businesses, 30% are individual mail, and the remaining 10% are government mail. 5% of the letters from businesses have address errors, 10% of the individual mail has address errors, while 1% of the government mail has address errors. If we receive a letter with an address error, what is the probability that it is individual mail?"

Carmen's age was twice as old as Luis was when Carmen was Luis's age. When Luis is Carmen's age, their ages will add up to 112.

Hola👋🏻 Toca en "Crear Nueva Tarea" para enviar tu problema de matemáticas. ¡Uno de nuestros expertos comenzará a trabajar en ello de inmediato!