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Molodets [167]
3 years ago
9

Side and angle properties of a parallelogram (level 1)

Mathematics
1 answer:
Andrew [12]3 years ago
4 0

Answer:

Step-by-step explanation:

Opposite sides are parallel and congruent. Opposite angles are congruent. Adjacent angles are supplementary. ... If one of the angles of a parallelogram is a right angle then all other angles are right and it becomes a rectangle.

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Given f(x)=-2x^3 + 3x^2 , find the equation of that tangent line of f at the point where x=2.
trapecia [35]

Step 1: Find f'(x):

f'(x) = -6x^2 + 6x

Step 2: Evaluate f'(2) to find the slope of the tangent line at x=2:

f'(2) = -6(2)^2 + 6(2) = -24 + 12 = -12

Step 3: Find f(2), so you have a point on y=f(x):

f(2) = -2·(2)^3 + 3·(2)^2 = -16 + 12 = -4

So, you have the point (2,-4) and the slope of -12.

Step 4: Find the equation of your tangent line:

Using point-slope form you'd have: y + 4 = -12 (x - 2)

That is the equation of the tangent line.

If your teacher is picky and wants slope-intercept, solve that for y to get:

y = -12 x + 20

5 0
2 years ago
How can Ari simplify the following expression? StartFraction 5 Over a minus 3 EndFraction minus 4 divided by 2 + StartFraction 1
kirill [66]

Answer:

The simplification for the expression is given as =( 7 + 2(a-3))/(a-3)

Step-by-step explanation:

To simplify the expression we will first convert the words to values in numbers and alphabets.

StartFraction 5 Over a minus 3 EndFraction minus 4 divided by 2 + StartFraction 1 Over a minus 3 EndFraction

= 5/(a-3) -4/2 + 2/(a-3)

Having done that, let's move on and simplify the expression.

5/(a-3) -4/2 + 2/(a-3)

= 5/(a-3) -2+ 2/(a-3)

= 5/(a-3) + 2/(a-3) -2

= 7/(a-3) -2

=( 7 + 2(a-3))/(a-3)

7 0
3 years ago
use the distance formula to find the distance between the two points. (0, -2) and (9, 10) give the exact length (leave in radica
kkurt [141]

Answer:

15 units

Step-by-step explanation:

Calculate the distance d using the distance formula

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (9, 10)

d = \sqrt{(9-0)^2+(10+2)^2}

   = \sqrt{9^2+12^2}

   = \sqrt{81+144}

   = \sqrt{225}

   = 15

6 0
2 years ago
The 4th term in a geometric sequence is -15, the 5th term is 45 and the 6th term is -135. Find the sum of the first 7 terms.
Andreas93 [3]

Answer:

d) 303 8/9

Step-by-step explanation:

4th term = ar^3  and 5th = ar^4   where a = first term and r = common ratio.

So ar^4 / ar^3

= r = 45/-15 = -3.

Working back,:

The first term a = ar^3/ r^3

= -15 / (-3)^3

= -15/-27

= 5/9

Sum of n terms = a * (r^n - 1)/(r-1)

= 5/9 * ((-3)^7 - 1 ) / (-3 -1)

= 303 8/9

3 0
2 years ago
Read 2 more answers
Help<br><br><br><br><br><br><br><br><br><br><br> Nxhxhxhdhdhdbsbsbdhdhd
Annette [7]
Your answer is number 2 it is 38.2 because 26 out of 68 is a percentage of 38.24
3 0
2 years ago
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