Tell wether the the graph of each quadratic functions opens upward or downward y=-3x^2+4x Y=1-2x+6x^2 Y+x^2=-x-2 Y+2=x^2 Y-2x^2=-3 Y+2+3x^2=1

Answers

Answer 1
Answer: Hello,
all you have to see is the coefficient of x²:
if positive: upward
if negative : downward

y=-3x²+4x  ==> -3: downward

y=1-2x+6x² ==>6 : upward

y+x²=-x-2==>y=-x²-x-2 ==> -1: downward

y+2=x² ==>1: upward

y-2x²=-3==>y=2x²-3 ==> 2: upward

y+2+3x²=1==>y=-3x²-1 ==> -3: downward



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Write each sum as a product of the GCF of two numbers 75 and 90

Answers

75: 1, 3, 5, 15, 25, 75
90: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90

GCF(75, 90) = 1, 3, 5, 15

1 × 3 × 5 × 15
3 × 75
225

Simplify the expression.
-50 + 3r + 50 - 3r

Answers

Answer:

0

Step-by-step explanation:

Group like terms= 3r-3r-50+50

Add similar elements= -50+50

Answer=0

I hope this helps!

phillip sells electronics and works on a commision basis. if his commossion is 4%, and he sells $15,000 worth of electronics, what are his earnings

Answers

Answer:

Phillip's commission for sales of $15,000 is $600.

Step-by-step explanation:

Phillip sells electronics and works on a commission basis.

His commission is 4% for x dollars worth of sales.

Hence, when his sales are $15000, his commission will be :

0.04*15000=600 dollars

So, Phillip's commission for sales of $15,000 is $600.

4% of $15,000 = 600
so his total would be $15,000
im not fully positive that i'm correct because i do not understand the question but 4% = 600 hope that helps

Which statement describes the graph of the system of equations below?1.5x + 0.2y = 2.68

1.6x + 0.3y = 2.98


The lines are parallel.

The lines overlap at all points.

The lines intersect at (1.6,1.4).

The lines intersect at (3.1,0.5).

Answers

In order to see the behavior of the line formed from the equations, we write the given equation in general form which is y=mx+b

1.5x + 0.2y = 2.68 --> y= -7.5x + 13.4

1.6x + 0.3y = 2.98 --> y= -5.33x + 9.93

They definitely are not parallel lines and do not overlap at all points. Plotting the equations in a graph, an intersection is observed. This intersection most likely is the third option. The lines at (1.6, 1.4).

Answer

2

taskmasters

In order to see the behavior of the line formed from the equations, we write the given equation in general form which is y=mx+b

1.5x + 0.2y = 2.68 --> y= -7.5x + 13.4

1.6x + 0.3y = 2.98 --> y= -5.33x + 9.93

They definitely are not parallel lines and do not overlap at all p

Solve and verify each of the following of linear eequations

2X+3y=432 and 5x-2y=16

Answers

There are 3 available methods- Substitution , Elimination and Matrix. 

To solve this 
linear equations lets use Matrix's.  

\left[\begin{array}{ccc}2&3&432\n5&-2&16\n\end{array}\right] 

\left[\begin{array}{ccc}2&3&432\n0&-19/2&-1064\n\end{array}\right] 

\left[\begin{array}{ccc}2&3&432\n0&1&112\n\end{array}\right] 

\left[\begin{array}{ccc}2&0&96\n0&1&112\n\end{array}\right]  

\left[\begin{array}{ccc}1&0&48\n0&1&112\n\end{array}\right] 

x=48 

y=112
2x+3y=432 becomes y=-2/3x+144 and 5x-2y=16 which becomes y=5/2x-8

If h(x) = −3x − 10, find h(−3).

Answers

Answer:

9

Step-by-step explanation:

h=-3

-3(-3)= 9

Answer:

h(-1)

h= -1

Step-by-step explanation: