Answer: C
Step-by-step explanation:
5x+3y=13
+(-5x-12y=23)
---------------------
-9y=36
y=-4
To find x plug in y into any equation.
5x+3(-4)=13
5x=25
x=5
Answer:
4
Step-by-step explanation:
if the required number is 'x', then the sum of 2 times the number and 10 is 2x+10; the difference of the number and 1 is x-1. Using these two equation it is possible to make up the common one:
2x+10=6(x-1);
4x=16;
x=4.
Answer:
0.7999989281
Step-by-step explanation:
x1 = cos^-1 (3/5)
x1= 53.13°
sin(53.13) = 0.7999989281
Answer:
Noelle has four times as many apples in her grocery bag as her friends
Dakota and Kylie combined. Dakota has 1 apple in her bag. Noelle has 16
apples in her bag. How many apples does Kylie have in her grocery bag?
The equation 4(x + 1) = 16 models this situation. Which choice shows the sequence of operations needed to solve this problem, using both arithmetic and algebra?
Answer:
ad= 15 fc= 9 eb= 22 i dont know what ag is im sorry, i think eg is 9
Step-by-step explanation:
sorry if i'm wrong i haven't done this in 3 years but i think they are right