Answer:
y = 5.66388 feet, (round that to whatever you need to round to)
Step-by-step explanation:
cos (51) = y/9
cos(51)*9=
y = 5.66388 feet
For system to have infinite solutions, both equation must be similar.
Noticed that second is the first equation times 3:
3[ 2x - 4y = 18]
6x - 12y = 54
So you should fill in 12 in box.
Answer:
It's the last one where x=3 and y=2
Explanation:
Replace x and y with 3 and 2. It then becomes
-4(3) + 8(2) = 4
Solve. -4 × 3 is -12 since a positive times a negative equals a negative. 8 × 2 is 16. Bring down the 4.
-12 + 16 = 4
When solving something like this and you don't know what to do or how to solve it, you can subtract the smaller number from the larger number and then whether the sum is a negative or positive depends on the largest number. So here, 16 is the largest, so the sum will be positive. And 16-12 is 4, so the final answer is positive 4. You can also look at a number line and start from -12 and then add 16 and see which number you end at after adding 16.
The denominator is the part that tells how many units the fraction contains
Answer:
<h2>y = 6</h2>
Step-by-step explanation:
Put x = -7 to the equation -4x - 9y = -26, and solve it for y:
-4(-7) - 9y = -26
28 - 9y = -26 <em>subtract 28 from both sides</em>
-9y = -54 <em>divide both sides by (-9)</em>
y = 6