Anonymous Anonymous

12-12-2016
Mathematics

Answered

Twice the sum of a number and 9 equals 7.

Use the variable y for the unknown number.

Verified Answer :

12-12-2016

2(y + 9) = 7 Since it says twice the SUM, you have to do the addition first so the 2 times goes outside the parenthesis.

2y + 18 = 7 Subtract 18 from both sides
2y = -11 Divide both sides by 2
y = -11/2

Answer Link

Related Questions

Does the data in the table represent a linear function if so write a rule for the function Ayes y 8x 9 Byes y 8x 8 Cyes y 18x 8 Dno

balanced equation for Nitric oxide gas reacts with hydrogen gas to form ammonia gas and water vapor

The water in the gulf of mexico is the water near arctic regions a less dense than b more dense than c just as dense as

What are the solutions of the inequality x5 gt2

How do you express 58 as a decimal

A closed loop through which current can flow is called an conductor resistor voltage source circuit

What are nutria and zebra mussels examples of a Endangered species b Invasive species c Native species d Threatened species

10 Julianna used a gift card to pay for an 18 haircut The remaining balance on the card was 22 Write and solve an equation to find the original value of the car

You want path 1 to be a continuous distance of 15 km from the center of the habitat 1 path one represents what mathematical object 2 what is the radius of path

the treaty of Versailles punished Germany for its role in world war 1 by

Web Analytics Made Easy - Statcounter