Ariel incorrectly says that 2 and 5/8 is the same as 2.58. a. convert 2 and 5/8 to a decimal. b. what was ariel’s likely error?

a.2.625

b.Ariel takes the value of .It is error of Ariel.

Step-by-step explanation:

We are given that Ariel incorrectly  says values of and 2,58 are same.

We have to convert into a decimal and we have to find the Ariel's error.

The value of   =2.625 not 2.58

Ariel consider that value of but actually value of .

Hence,  Ariel takes value of =0.58 in place of 0.625.

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15