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zvonat [6]
1 year ago
13

Find the least number that must be subtracted from 21 2o show the result is a perfect square​

Mathematics
1 answer:
ivanzaharov [21]1 year ago
5 0

Answer:

5

Step-by-step explanation:

2 × 2 = 4

3× 3 = 9

4 × 4 =16

5 × 5 =25

16 is the only number and closest number to 21 to subtract from

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Need this worked out please so I can understand it
Afina-wow [57]

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Answer:

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Step-by-step explanation:

The slope of a function is its derivative.

a) The slope of y = x^3 +3 at any point is y' = 3x^2. So, at the point where x=-2, the slope of the curve is ...

  m = 3(-2)^2 = 12 . . . . slope at (-2, -5)

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b) The equation of the tangent line is most easily written using the point-slope form of the equation of a line.

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

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3 0
3 years ago
What are 3 completed examples for functions?
Lyrx [107]
Example 1

Write y = x2 + 4x + 1 using function notation and evaluate the function at x = 3.

Solution

Given, y = x2 + 4x + 1

By applying function notation, we get

f(x) = x2 + 4x + 1

Evaluation:


Substitute x with 3

f (3) = 32 + 4 × 3 + 1 = 9 + 12 + 1 = 22

Example 2

Evaluate the function f(x) = 3(2x+1) when x = 4.

Solution

Plug x = 4 in the function f(x).

f (4) = 3[2(4) + 1]

f (4) = 3[8 + 1]

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Example 3

Write the function y = 2x2 + 4x – 3 in function notation and find f (2a + 3).

Solution

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Substitute x with (2a + 3).

f (2a + 3) = 2(2a + 3)2 + 4(2a + 3) – 3

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3 0
3 years ago
Write 8.62 in word form.
borishaifa [10]
Eight point six two is the answer
7 0
3 years ago
Read 2 more answers
If s(x) = x - 7 and t(x) = 4x2 – x + 3, which expression is equivalent to<br> to (t•s )(x)?
serg [7]

Answer:

(t•s )(x) = 4x^3 - 29x^2 + 10x - 21

Step-by-step explanation:

(t•s )(x) is the product of functions s and t:

(t•s )(x) = ( 4x^2 - x + 3)(x - 7).  Applying the Distributive Property of Multiplication, we get:

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which needs to be simplified by combining like terms:

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7 0
2 years ago
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Rom4ik [11]

Answer:

<em>-10ab</em>

STEP BY STEP EXPLANATION

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<em>-10ab</em>

Hope this will help you if not then sorry :)

8 0
3 years ago
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