Answer:
1800 or D.
Step-by-step explanation:
Ill post a link an article that can help you master this, I found it very useful. Tell me if you need help after reading it
1. To solve this exercise, you must make a system of equations.
2. You have that f<span>our times a number minus twice another number is -8:
</span>
4x-2y=-8
3. And t<span>he sum of the two number is 19:
</span>
x+y=19
4. As you can see, you have two equations:
4x-2y=-8 (i)
x+y=19 (ii)
5. Let's clear the "x" from the equation (ii):
x=19-y
6. Now, you need to susbtitute x=19-y into the equation (i):
4x-2y=-8
4(19-y)-2y=-8
76-4y-2y=-8
76-6y=-8
-6y=-8-76
-6y=-84
y=-84/-6
y=14
7. You must susbstitute y=14 into the equation (ii) and clear "x":
x+y=19
x+14=19
x=19-14
x=5
The answer is: 5 and 14
Answer:
1. 240$ 2. 280$ 3. 300$
Step-by-step explanation:
for every single problem you times the hours by 10× then the drones by 40× Thank me later
Answer:
She needs to subtract 5-3 first
Step-by-step explanation:
Parentheses come first
Then exponents
Then mulitplication and division going left to right
Then subraction and addition going left to right
The correct answer would be
31/3
