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Yuri [45]
3 years ago
8

Why do people post Khan Academy questions here?

Mathematics
2 answers:
valentina_108 [34]3 years ago
8 0

Answer:

a

Step-by-step explanation:

dybincka [34]3 years ago
3 0

Answer:

d. all of the above

Step-by-step explanation:

a,b, and c all answer the question asked.

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Sanjay graphs a quadratic function that has x-intercepts of –3 and 7. Which functions could he have graphed? Check all that appl
Alchen [17]

Answer:

  • g(x) = x^2 – 4x – 21
  • g(x) = 3x^2 – 12x – 63
  • g(x) = –(x + 3)(x – 7)

Step-by-step explanation:

When r is an x-intercept of the function, (x -r) is a factor. The two given x-intercepts mean that two factors of the function are (x -(-3))(x -7). There may be a vertical scale factor that is not necessarily positive.

These factors multiply out to give ...

  (x +3)(x -7) = x^2 -4x -21 . . . . . . matches the first choice

When this expression is multiplied by 3, it matches the third choice:

  3(x +3)(x -7) = 3x^2 -12x -63

When the factored form is multiplied by -1, it matches the fourth choice:

  -(x +3)(x -7)

5 0
3 years ago
Read 2 more answers
Pls help me with this question and pls don't answer if you don't know. thank you,
polet [3.4K]

Answer:

I apologize if this was poorly explained. The explanation for each is below the angle.

Since these triangles are in a rectangle, The top and bottom triangles are congruent, and the left and right triangles are congruent. All 4 triangles are also Isosceles. (Two equal sides/angles)

m<1= 59

(Left and right triangles are congruent)

m<2=31

(Top and bottom triangles are congruent)

m<3= 59

(Directly across from the other 59)

m<4=31

(Each of the rectangles corner angles totals to 90 degrees, therefore making this angle 31 degrees.)

m<5=31

(Since the triangles are isosceles, this angle is also 31)

m<6= 59

(Since m<5 is 31, this angle is 59.)

m<7=118

{(Two other angles in the triangle) 31+31= 62 180-62= 118)}

m<8=62

{(Two other angles in the triangle)59+59= 118. 180-118= 62}

m<9=62

(This angle and m<8 are congruent.)

m<10=118

(This angle and m<7 are congruent.)

m<11=31

(Same reason as m<4)

I hope this helps!

8 0
3 years ago
Someone please answer these
mr Goodwill [35]

Answer:

1) 3

2) 1

3) 3

4) 2

5) 2

Step-by-step explanation:

please reply if you would like an explanation because my work was mental and I'd have to write it down for you

7 0
4 years ago
Double h then multiply 4 by the result
podryga [215]

\huge\boxed{Hi\;there!}

"Double h" means h^2 (h squared) or h times h.

Then, we multiply 4 by the result:

4h²

Remember, we always put a number before a variable.

h²4 is wrong and confusing.

The correct answer is

\huge\boxed{\sf{4h^{2} }}

\huge\bold{Hope\;it\;helps!\;Good\;luck!}

\rm{StillEnjoyingLife :)

5 0
3 years ago
What is [5x6] divide by 5+4-3
kotegsom [21]

Answer: 7

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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