Answer:
x=-2, y=-10
Step-by-step explanation:
Since both equations are equal to y, we can set them equal to each other and solve
x-8=5x
Subtract x from both sides
-8=4x
Divide both sides by 4
x=-2
Next, we need to find a y
Substitute -2 in for x in one of the equations and solve
y=5x
y=5*-2
y=-10
x=-2, y=-10
N/5+.6=2
-.6 |-.6 (Subtract .6 from both sides this
= n\5=1.4
=.2n=1.4 (I converted n/5 to a decimal
which is .2n, because it makes
it easier to simplify)
n = 7 (Answer)( .2n fits into 1.4, 7 times therefore the answer is n=7)
Answer:
<u>To prove:</u>
<u>Expand the square:</u>
- 9x² + 6x + 4 = (9x² + 6x + 3) + 1 = 3(3x² + 2x + 1) + 1 = 3y + 1
Answer:
Step-by-step explanation:
We can use Hypotenuse Theorem for this:
For triangle ABC,
AC²=CB²+BA²
9²=CB²+3²
Switch the sides
-CB²=3² -9²
-CB²= 9-81
-CB²= -72
the signs cut each other
CB²=72
the square changes sides
CB=√72
CB= 8.49 cm
Now triangle CBD
We have the length of CB but not the other two whereas we have the angle
It will be sin
As we know sin= O/H
Here O is CB whereas H is CD
Put the values
sin 50= 8.49/H
H= 8.49 ÷sin 50
Calculate
H=11.1 cm
As we know H is CD so CD is 11.1 cm
Hope it helps
