Which equation can be used to find the answer? camilla needs $65 for a pair of hiking shoes. she already has $19 saved. how much more does she need to save? a. n + 19 = 65 n = 46 $46 b. n ÷ 2 = 19 n = 38 $38 c. n – 19 = 65 n = 84 $84 d. n ÷ 2 = 65 n = 130 $130

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day

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

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.