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
nydimaria [60]
3 years ago
12

I NEED HELP ASAP!!!

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
5 0

Answer:

The number that would go in the blank to get a perfect square trinomial is 18

Step-by-step explanation:

The middle term can always be found by taking twice of the square root of the final term.

2 * √81 = 18

You might be interested in
A little help? A set of numbers is given below. √72, 9.25, √83, 2, 8.7 Which list correctly orders the numbers from least to gre
myrzilka [38]

Answer:

9.25, 83^1/2, 8.7, 72^1/2, 2 From greatest to least

2, 72^1/2, 8.7, 83^1/2, 9.25 from least to greatest

Step-by-step explanation:

6 0
3 years ago
Which of these strategies would eliminate a variable in the system of equations?
Lubov Fominskaja [6]

Answer:

B

Step-by-step explanation:

2x-5y=13.........(1) × 3

-3x+2y=13.......(2) × 2

6x - 15y = 39

-6x + 4y = 26

Adding

6x - 6x - 15y + 4y = 13 + 13

5 0
3 years ago
Read 2 more answers
X+2=19 <br><br>Write a story​
snow_lady [41]

Answer:

19 - 2 = x The X will be 17

I have x candy, but my friend only have 2 candy which is less than me, but our total is 19 candy. How many candy do I have?

You could make similar story if you want to. But the X is 17.

8 0
2 years ago
Read 2 more answers
Y=arccos(1/x)<br><br> Please help me do them all! I don’t know derivatives :(
Stells [14]

Answer:

f(x) =  {sec}^{ - 1} x \\ let \: y = {sec}^{ - 1} x  \rightarrow \: x = sec \: y\\  \frac{dx}{dx}  =  \frac{d(sec \: y)}{dx}  \\ 1 = \frac{d(sec \: y)}{dx} \times  \frac{dy}{dy}  \\ 1 = \frac{d(sec \: y)}{dy} \times  \frac{dy}{dx}  \\1 = tan \: y.sec \: y. \frac{dy}{dx}  \\ \frac{dy}{dx} =  \frac{1}{tan \: y.sec \: y}  \\ \frac{dy}{dx} =  \frac{1}{ \sqrt{( {sec}^{2}   \: y - 1}) .sec \: y}  \\ \frac{dy}{dx} =  \frac{1}{ |x |  \sqrt{ {x }^{2}  - 1} } \\   \therefore  \frac{d( {sec}^{ - 1}x) }{dx}  =  \frac{1}{ |x |  \sqrt{ {x }^{2}  - 1} } \\ \frac{d( {sec}^{ - 1}5x) }{dx}  =  \frac{1}{ |5x |  \sqrt{25 {x }^{2}  - 1} }\\\\y=arccos(\frac{1}{x})\Rightarrow cosy=\frac{1}{x}\\x=secy\Rightarrow y=arcsecx\\\therefore \frac{d( {sec}^{ - 1}x) }{dx}  =  \frac{1}{ |x |  \sqrt{ {x }^{2}  - 1} }

4 0
2 years ago
How to solve this<br><img src="https://tex.z-dn.net/?f=540in%20%3D%20%20%5C%3A%20yd" id="TexFormula1" title="540in = \: yd" alt
Gnom [1K]

Answer:

15 yds

Step-by-step explanation:

12 in = 1ft

3 ft = 1yd

to convert

540 in * 1ft/12 in   * 1yd /3 ft = (540 * 1 * 1)/ (12*3) = 540/36 =15 yds

all the units canceled except for yds

5 0
2 years ago
Read 2 more answers
Other questions:
  • Evaluate the line integral, where c is the given curve. c y3 ds,<br> c.x = t3, y = t, 0 ≤ t ≤ 4
    9·1 answer
  • One die is rolled 3 times, what is the chance of getting all 4's?
    7·1 answer
  • Do all triangles have right angles why or why not
    9·2 answers
  • Figure out the pattern, fill in the blank square.
    14·2 answers
  • If f(x) = -4x - 6, then f(0.3) =
    9·1 answer
  • The length of the hypotenuse of 30-60-90 triangle is 5. find the perimeter
    14·1 answer
  • It is 42 1/2 miles from Eden to Baxter and 37 4/5 miles from Baxter to Wellington how far is it from eden to Wellington if you g
    14·1 answer
  • A department store sold 62 shirts one day. All short-sleeved shirts cost $11.00 each and all long-sleeved shirts cost $17.00 eac
    7·2 answers
  • Please help me on this I’m so tired and I can’t sleep until my progress is at 80 and this is the end of my year it’s at 79%
    8·1 answer
  • Direction: Name at least 2 examples of each of the following terms below from figure 2.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!