1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BabaBlast [244]
3 years ago
7

PLEASE HELP WITH MATH QUESTION!! EXPLANATION NEEDED TOO!

Mathematics
1 answer:
Dovator [93]3 years ago
8 0

Answer:

Matt should have factored out the leading coefficient 2 on the second step before completing the square

Step-by-step explanation:

To complete the square, you must first factor the leading coefficient from the first two terms.

y = 2x² − 10x − 4

y = 2 (x² − 5x) − 4

y = 2 (x² − 5x + 25/4 − 25/4) − 4

y = 2 (x² − 5x + 25/4) − 25/2 − 4

y = 2 (x − 5/2)² − 33/4

You might be interested in
A triangle has two angles that measure 18.6 degrees and 113.4 degrees respectively. what is the measure of the third angle?
spin [16.1K]

Answer:

x = 48

Step-by-step explanation:

18.6 + 113.4 + x = 180

132 + x = 180

x = 180 - 132

x = 48

5 0
3 years ago
Based on the timeline, which of the following statements is true?​
Morgarella [4.7K]

Answer:

<h2><u>Answer B. </u></h2>

Step-by-step explanation:

If you check each answer, only B works since it is the only one that would place everything correctly on the timeline

5 0
3 years ago
what is the equation in slope intercept form of the line that crosses the x-axis at -2 and is perpendicular to the line represen
Verdich [7]

Answer:

y = -2x - 4

Step-by-step explanation:

So we have the x intercept and a line perpendicular to the one we are trying to find.

Perpendicular deals with the slope.  Perpendicular slopes are negative reciprocals of each other, or in other words, if the slope is m the negative reciprocal is -1/m.

the slope of the perpendicular line is 1/2 so that means the negative reciprocal is -2.

x intercept is when y=0, so the point is (-2, 0).  So that means the equation to make this point with the slope of -2 will look like this

y = mx + b

0 = -2*-2 + b

-4 = b

Now to get into the line we just plug in m and b into y = mx + b

y = mx + b

y = -2x - 4

And to check if you plug in -4 you'll get y = 0

6 0
3 years ago
An invoice for $450 has terms 2/10, 1/30, n/60. If you pay on the eighth day, how much will you remit? A. $446.00 B. $450.00 C.
elena-s [515]
I believe the answer is: <span> C. $441.00
</span>
the <span>terms 2/10, 1/30, n/60. indicates that you would get 2% discount if you pay within 10 days and 1% discount if you pay within 30 days.

If you pay on the 8th day, the amount of your payment would be:

$ 450 x 98%   = $ 441</span>
8 0
3 years ago
The perimeter of the rectangle is 76 units. Find the length of side pq
larisa [96]

Answer:   PQ=16\ units

Step-by-step explanation:

The missing figure is attached.

The perimeter of a rectangle is:

P=2l+2w

Where "l" is the lenght and "w" is the width.

You can identify in the figure that:

w=SR=PQ=2z+2\\\\l=QR=PS=3z+1

Then, knowing the perimeter of the rectangle, you can make the subsitution into the formula:

 76=2(3z+1)+2(2z+2)

Now you must simplify and solve for "z"

76=6z+2+4z+4\\\\76-6=10z\\\\70=10z\\\\\frac{70}{10}=z\\\\z=7

Finally, substituting the value of "z" into  PQ=2z+2, you get:

 PQ=2(7)+2=16\ units

6 0
3 years ago
Other questions:
  • The slope of the line passing through (-9,-6) and (-15,y) is 2/3. what is the value of y
    7·2 answers
  • At the Tesla factory, a machine tests 1 out of every 75 windshields produced for quality. The machine requires a safety inspecti
    8·1 answer
  • How do you write 36.4 in word form
    13·2 answers
  • Please help! Points​ E, D, and H are the midpoints of the sides of ΔTUV. UV=48​, TV=62​, and HD=48. Find HE.
    9·1 answer
  • What is the slope of the line that.passes through (76,5) and (82,83)​
    9·1 answer
  • How is 7x➕721 factored
    7·1 answer
  • Cousin needs help and im not allowed to help lol dp it for me thx
    10·1 answer
  • (7 + 18) x 3÷ (2 + 13) -28
    10·1 answer
  • What is the slope of the function?
    10·1 answer
  • Can someone help me pls
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!