Answer:
3 quarts
Step-by-step explanation:
First, find how many quarts of antifreeze is in the mixture.
0.4 x 6 = 2.4
Now, make it into a fraction by putting the antifreeze amount over the rest so:
2.4/6
Now add + a at the end of the numerator and bottom to make:
2.4 + a/ 6 + a.
Now, turn the percentage you want to strengthen or weaken the mixture into a percentage. So, 3/5.
Now, make it an expression by adding = 3/5 at the end of the equation.
2.4 + a/ 6 + a = 3/5
Now, use cross multiplication.
12 + 5a = 18 + 3a
Now, solve the equation.
12 + 5a = 18 + 3a
-3a. -3a
12 + 2a = 18
-12. -12
2a = 6
/2. /2
a = 3.
Therefore, the answer is 3 quarts.
Answer: a - (9xb)
Step-by-step explanation:
"A number diminished"
Diminished means made smaller or less.
So a variable minus.....
"By 9 times a number"
"By" with (including the variable multipled with 9)
"9 times a number" 9 multipled by a variable in parenthesis.
So 9 times a variable.
I hope you got it right :)
Answer:
−
7
√
15
Step-by-step explanation:
i just used my calculator haha!!
As we know,
now, let's plug the given values to find a² + b²
