7.5x + 40 = 70
Note the equal sign. What you do to one side, you do to the other. Isolate the x. Do the opposite of PEMDAS.
First subtract 40 from both sides
7.5x + 40 (-40) = 70 (-40)
7.5x = 70 - 40
7.5x = 30
Next, divide 7.5 from both sides
7.5x/7.5 = 30/7.5
x = 30/7.5
x = 4
4 friends are going to the aquarium together
hope this helps
Answer:
b) -2/3
Step-by-step explanation:
2X + 3Y = - 12
3Y = -2X - 12
Y = - 2/3X - 6
SLOPE = - 2/3
Answer:
The difference between Noah’s mean and Gabriel’s mean is:
87.17 - 87 =0.17
The ratio of the difference in the mean to Noah’s MAD is:
0.17 : 2.67
17 : 267
The ratio of the difference in the mean to Gabriel’s MAD is:
0.17 : 3.22
17 : 322
Both of these ratios show that the difference in the means is about 5% of the MAD values:
17/267 × 100 = 6.3670411985%
17/322 × 100 = 5.27950311%
Answer:
a=4
Step-by-step explanation:
what minus 4=8? its 12. 12-4=8 so
what times 3 is 12? 4.
3*4=12
12-4=8
a=4