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2 years ago

Quadrilaterals and other polygons

Mathematics

2 answers:

Vinvika [58]2 years ago

4 0

Answer:

Step-by-step explanation:

Brut [27]2 years ago

4 0

I got B too and I got it right on my test

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BRAINLIESTTT ASAP! PLEASE HELP ME :)

sergiy2304 [10]

Answer:

$\displaystyle Maximum: 11$

Step-by-step explanation:

Convert this Quadratic Equation to Vertex Form by completing the square, $\displaystyle y = a[x - h]^2 + k$ :

$\displaystyle -5x^2 -10x + 6 \\ \\ -5x^2 - 10x + 25 + k \\ -5[x^2 + 2x - 5] + k \\ -5[x^2 + 2x + 1] + k → -5[x^2 + 2x + 1] + 11 → f(x) = -5[x + 1]^2 + 11 \\ \\ Vertex: [-1, 11]; 11 = Maximum$

So as you can see, each time we broke the equation down, we used the formula $\displaystyle [\frac{b}{2}]^2$ to complete the square.

** In the Vertex Formula, −h gives the OPPOSITE terms of what they really are, so do not forget it.

I am joyous to assist you anytime.

4 0

2 years ago

For each of the finite geometric series given below, indicate the number of terms in the sum and find the sum. For the value of

chubhunter [2.5K]

Answer:

a)Number of terms =15

Value of sum =

(b)Number of terms =6

Value of sum

Step-by-step explanation:

nth term,

a=5, r=

Simce the bases are the same, the powers are equal.

n-1=14

n=14+1=15

Number of terms =

Value of sum =

nth term,

a=,

Simce the bases are the same, the powers are equal.

4+n-1=9

n=9+1-4=6

Number of terms =

Value of sum

NOTE: For the sum, we desire an expression that gives the exact value, rather than entering an approximation

4 0

3 years ago

How do you evaluate this?

vitfil [10]

$_6C_3=\dfrac{6!}{3!3!}=\dfrac{4\cdot5\cdot6}{2\cdot3}=20$

3 0

3 years ago

and his family ate out at El Patron. The subtotal was $58.76. If they left the server a 20% tip, what was the total bill?

Marianna [84]

Answer:

$70.51

Step-by-step explanation:

58.76 x 1.20 = $70.51 this is multiplying by 120%

you could also multiply by .2 x 58.76 = 11.75 which is the amount of the tip and add it to 58.76. giving you the same answer.

3 0

3 years ago

Which congruence theorem can be used to prove △WXZ ≅ △YZX? Triangles W X Z and Y Z X share side X Z. Angles W X Z and X Z Y are

notka56 [123]

Answer:

The correct option is AAS.

Step-by-step explanation:

Consider the diagram below.

It is provided that The triangles △ WXZ and △ YZX share a side <em>XZ</em>.
Angles ∠WXZ and ∠XZY are right angles.
Angles ∠XWZ and ∠XYZ are congruent.

If two angles are congruent it implies that they are same in degrees or radians.

So, the angles ∠XWZ and ∠XYZ are equal.

So, in the diagram below, one of the triangles have two angles that are equal to the corresponding angles on the other triangle and the two triangles share a side.

Then according to the Angle-Angle-Side (AAS) statement the triangles △ WXZ and △ YZX are congruent.

Thus, the correct option is AAS.

3 0

3 years ago

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