Krista and Alexa played balloon darts in a school fair. Krista popped 5 balloons and Alexa popped n balloons. Together, they popped a total of 13 balloons. Which equation can be used to determine the number of balloons Alexa popped? How many balloons did she pop?(1 point)
Responses
n + 13 = 5; Alexa popped 8 balloons.
n plus 13 equals 5 ; Alexa popped 8 balloons.
n − 5 = 13; Alexa popped 18 balloons.
n minus 5 equals 13 ; Alexa popped 18 balloons.
n + 5 = 13; Alexa popped 8 balloons.
n plus 5 equals 13 ; Alexa popped 8 balloons.
n − 13 = 5; Alexa popped 18 balloons.
The correct equation is n = 13 - 5.
So, Alexa popped 8 balloons.
Therefore, the answer is: n + 5 = 13; Alexa popped 8 balloons.
Due to excessive heat, the water level in a dam decreased by 8.8 meters last month. Now, the water level is 95.3 meters. Which equation represents the water level, w, of the dam last month? What was the water level last month?(1 point)
Responses
w + 95.3 = 8.8; the water level of the dam last month was 104.1 meters.
w plus 95.3 equals 8.8 ; the water level of the dam last month was 104.1 meters.
w + 8.8 = 95.3; the water level of the dam last month was 86.5 meters.
w plus 8.8 equals 95.3 ; the water level of the dam last month was 86.5 meters.
w − 8.8 = 95.3; the water level of the dam last month was 104.1 meters.
w minus 8.8 equals 95.3 ; the water level of the dam last month was 104.1 meters.
w − 95.3 = 8.8; the water level of the dam last month was 86.5 meters.
The correct equation is w = 95.3 - 8.8.
So, the water level of the dam last month was 86.5 meters.
Therefore, the answer is: w equals 95.3 minus 8.8; the water level of the dam last month was 86.5 meters.
The correct equation to determine the number of balloons Alexa popped is "n + 5 = 13".
To solve this equation, we need to isolate the variable "n" by performing the opposite operation of addition. By subtracting 5 from both sides of the equation, we get:
n + 5 - 5 = 13 - 5
n = 8
Therefore, Alexa popped 8 balloons.