amandajoycontreras amandajoycontreras

01-10-2020
Mathematics

contestada

help on this question, please

help on this question please class=

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

01-10-2020

Answer:

x = ±sqrt(7)

Step-by-step explanation:

3x^2 + 7 = 28

Subtract 7 from each side

3x^2 + 7-7 = 28-7

3x^2 = 21

Divide by 3

3x^2 /3 = 21/3

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)

Answer Link

Otras preguntas

A pea plant is heterozygous for height (Tt). Which allele will be carried by a pollen grain produced by the plant? A.T only B.t only C.T and t D.T or t

Give all solutions if the nonlinear system of equations, including those with no real complex components. y=x^2+6x 4x-y=-24

How do u do this ??? Alistair buys an antique chair for £600. It is expected to increase in value at the rate of 4.5% each year. How much is it expected to be w

In a right-angled triangle, the side opposite the right angle is unknown, how do you find out the unknown length? (Hypotenuse I think)

Who was the African-American who called the war with Mexico disgraceful and cruel? Why?

1.How and why did the universe begin?2.Whats the point of life? Why are we here?3.Are we alone in the universe?4.Are moral values relative or absolute?5.Should

Your uncle is planting an 8-foot tall tree. He ties support wires to the tree, 1 foot from the top, and ties them to posts on the ground, 4 feet from the trunk

Who do you think snitched on Anne Frank and her family?

If the circumference of a baseball is 24 cm what is the volume of the object

People who have an extra X chromosome could have gotten it through (A) nondisjunction. (B) transposition. (C) transduction. (D) crossing over. (E) all of the ab