05-08-2020
Mathematics

contestada

Twice the difference of a number and 9 is 3. Use the variable b for the unknown number.

Twice the difference of a number and 9 is 3 Use the variable b for the unknown number class=

Respuesta :

zarampa zarampa

09-08-2020

Answer:

b = 10.5

Step-by-step explanation:

2(b-9) = 3

then:

2*b + 2*-9 = 3

2b - 18 = 3

2b = 3 + 18

2b = 21

b = 21/2

b = 10.5

check:

2(10.5 - 9) = 3

2*1.5 = 3

Answer Link

Otras preguntas

What three islands are located off the East African coast

What is Sir Francis Drake hardships

in what ways is climate controlled by the sun and the water cycle ?

Rewrite the function c(x) =9(x+3) using the distributive property

Does the depth of a pan affect how water freezes?

Nadine can send or receive a text message for 15 cents or get an unlimited number for 5 dollars. Write and solve an inequality to find how many messages she can

Trying to translate word problems. Five times the sum of 3 and twice some number is 70. what is the number?

Trying to translate word problems. Five times the sum of 3 and twice some number is 70. what is the number?

What is two thirds minus six thirds

How many minutes are in 36 hours?