shammatt2007 shammatt2007

23-01-2022
Mathematics

contestada

If 5a – 3b = 7 and b = 2a –4, what is the value of a?

Respuesta :

semsee45 semsee45

23-01-2022

Answer:

a=5, b=6

Step-by-step explanation:

Substitute b = 2a - 4 into 5a - 3b = 7:

5a - 3(2a - 4) = 7

5a - 6a + 12 = 7

a = 5

Now use the found value of a to find b by using b = 2a - 4:

b = 2(5) - 4 = 10 - 4 = 6

Answer Link

Otras preguntas

How do you simplify (12y+12)-21y ?

Following the formation of a corporation, which of the following terms best describes the process by which the promoter is released from, and the corporation is

-4(x+5)+8x=48 What is x?

In 2020, the Merkel Company had revenues of $2,600,000 and costs of $2,100,000. During 2021, Merkel will be introducing a new product line that is expected to i

x+3 and 2x are they equivalent expressions

Identify the level of organization in organisms that is described in the following. 1.) Different types of tissue working together to perform a specific job fo

jake ordered 275 large pizzas for a party. when the party was over he had 250 large pizzas remaining. estimate the percent decrease in the number of large pizza

What is the number between 0.5 and 1.0

What are the products in the reaction in the introduction above? Select all that apply

| How did farming practices in the Midwest during the Great Depression contribute to the conditions which caused the Dust Bowl?