Answer:
It's A.
Step-by-step explanation:
Let's look at option A:
From the second equation y = -10 - x. Substituting in the first equation:
-10 - x = x^2 + 3x - 5
x^2 + 4x + 5 = 0
Checking the discriminant b^2 - 4ac we get 16 - 4*1*5 = -4 so there are no real roots. (A negative discriminant means no real roots).
So A has no real solution.
B.
x^2 + 3x - 5 = (20 - 4x)/5 = 4 - 0.8x
x^2 +3.8x - 9 = 0
b^2 - 4ac = (3.8)^2 - 4*1*-9 = 50.44 (positive) so there are real roots.
C.
x^2 + 3x - 5 = -9 - x
x^2 + 4x + 4 = 0
b^2 - 4ac = 4^2 - 4*1*4 = 0 so there are real roots.
It would be 21/32. To find this out, you would need to first multiply (-7/8) by (-3/4) which would give you 0.65625. Then look at your answer choices and divide each one ( (/) = same as dividing) until you get 0.65625 as one of the values.
Answer:
The graph that best represents the given equation in the attached figure
Step-by-step explanation:
we have

Find the y-intercept
Remember that the y-intercept is the value of y when the value of x is equal to zero
For x=0
substitute

The y-intercept is the point (0,2)
The given function is increasing, because the y-value increases as the x-value increases. The function tends to go up as it goes along
therefore
The graph that best represents the given equation in the attached figure
The answer is 60
because first you subtract 10 on both sides
then multiply 4 on both sides getting v=60
Marlen wants to know which package of paper towels in the better buy. Both packages contain the exact same type of paper towel.
One package costs $5.94 and comes with 6 rolls, and another package costs $8.73 and comes with 9 rolls.
Which package should Marlen buy?