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blondinia [14]
3 years ago
6

I need these questions to be answered correctly plz tryna get my grade up

Mathematics
1 answer:
Reil [10]3 years ago
6 0

Answer:

1. 81

2. 4 (square root of) 25^3

3. 30 (square root of) 10

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Determine all values of k that make each of the following a perfect square trinomial. X^2+8x+k
-Dominant- [34]

Answer:

k can either be

12

or

−

12

.

Step-by-step explanation:

Consider the equation

0=x2+4x+4

. We can solve this by factoring as a perfect square trinomial, so

0=(x+2)2→x=−2 and−2

. Hence, there will be two identical solutions.

The discriminant of the quadratic equation (b2−4ac) can be used to determine the number and the type of solutions. Since a quadratic equations roots are in fact its x intercepts, and a perfect square trinomial will have

2 equal, or 1

distinct solution, the vertex lies on the x axis. We can set the discriminant to 0 and solve:

k2−(4×1×36)=0

k2−144=0

(k+12)(k−12)=0

k=±12

6 0
3 years ago
Plz help math #5 questions
vekshin1
Okay , wheres the questions at tho...?


5 0
4 years ago
A pitched roof is built with a 2:5 ratio of rise to span. If the rise of the roof is 12 meters, what is the span?
grin007 [14]
15 meters!! Is the correct answer
3 0
2 years ago
What is the correct simplified version of the expression 32x + 8 - 34x?
MakcuM [25]

Answer:

  -2x +8

Step-by-step explanation:

The terms involving x are "like" terms, so their coefficients are added when the terms are combined.

  = 32x -34x +8

  = (32 -34)x +8 . . . . . x is factored out according to the distributive property

  = -2x +8

5 0
3 years ago
What is the probability that a randomly thrown dart that lands within the rectangle lands within a shaded region? All of the cir
marusya05 [52]
D is the answer because the circle has no sides so it’s 157/200
8 0
3 years ago
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