Answer: -1.5
Step-by-step explanation:
<h2>
Greetings!</h2>
Answer:
y = 
and x = 
Step-by-step explanation:
To solve simultaneous equations, you need to have the number in front of both x's or y's the same. (signs doesn't matter)
To get -x to -10x we simply need to multiply the first equation by 10:
-x * 10 = -10x
-9y * 10 = -90y
16 * 10 = 160
-10x - 90y = 160
Now we can add the two equations:
-10x + 10x = 0
-90y + 20y = -70y
160 + 20 = 180
-70y = 180
70y = -180
7y = -18
y =
Now plug into the second equation:
10x + 20() = 20
10x - 
= 20
Move the over to the other side, making it a positive:
10x = 20 +
10x = 
Divide both sides by 10:
x =
So y = and x =
<h2>Hope this helps!</h2>
It's D)
you can subsitute any number you want for x and it'd still be a soloution to y=
Answer:
Option B. 2.75
Step-by-step explanation:
It has been given in the question that a wedge has a width of 2 cm and a slope of 5.5 cm.We have to calculate the mechanical advantage of the given wedge.
We know the formula to calculate the mechanical advantage of the wedge
Mechanical advantage = Length of slope/Thickness of the widest end
= 5.5÷2 = 2.75
Therefore the answer is option B. 2.75
Answer:
p ≥ -10
Step-by-step explanation:
Divide both sides by-9:
When dividing or multiplying by a negative number, always flip the inequality sign:
-9p/-9 > = 90/-9
Cancel out the negatives:
9p/9 > = 90/-9
Simplify the fraction:
p > = 90/-9
Simplify the signs:
p > = -90/9
Find the greatest common factor of the numerator and denominator:
p >= -10 · 9/ 1 · 9
Factor out and cancel the greatest common factor:
p > = -10
