It took 6 hours for the temp. to drop to 7.8
Answer:
15/40 which simplified is 3/8
Step-by-step explanation:
To solve this equation, we first have to turn all mixed numbers into improper fractions so we can add and subtract them
When we do this we get, 35/5 - (11/4 + 31/8)
Since there is a negative (-) sign before the parentheses, we automatically sub in a -1 in there and we distribute
Now we have 35/5 - 11/4 - 31/8
We can’t subtract this directly since they all have different denominators, so we have to change them to a common denominator
The common denominator of 5 4 and 8 is 40 so we multiply both the numerators and denominators by whatever number it is so the denominators are 40
This gets us to 280/40 - 110/40 - 155/40
When we subtract all of this, we get…
15/40 which can be simplified to 3/8
Hope this helped, have a great day, and please award brainliest
Answer:
x = -1
, y = 1
Step-by-step explanation:
Solve the following system:
{5 x + 3 y = -2 | (equation 1)
3 x + 2 y = -1 | (equation 2)
Subtract 3/5 × (equation 1) from equation 2:
{5 x + 3 y = -2 | (equation 1)
0 x+y/5 = 1/5 | (equation 2)
Multiply equation 2 by 5:
{5 x + 3 y = -2 | (equation 1)
0 x+y = 1 | (equation 2)
Subtract 3 × (equation 2) from equation 1:
{5 x+0 y = -5 | (equation 1)
0 x+y = 1 | (equation 2)
Divide equation 1 by 5:
{x+0 y = -1 | (equation 1)
0 x+y = 1 | (equation 2)
Collect results:
Answer: {x = -1
, y = 1
Answer:
It is 20%.
Step-by-step explanation:
You minus 28 from 35 it will give 7 and then take 7 x 100 / 35 which will give you 20%