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cestrela7 [59]
4 years ago
14

Select the polynomial that is a perfect square trinomial.

Mathematics
2 answers:
Sveta_85 [38]4 years ago
7 0

Answer:

The answer is 16x2 − 8x + 1

To be a perfect square trinomial, the rule must be used:

(a - b)² = a² - 2ab + b²

Let's check all choices

A. a = 7x, b = 4

(7x - 4)² = 49x² - 56x + 16

B. a = 2a, b = 5

(2a - 5)² = 4a² - 20a + 25

C. a = 5b, b = √10

(5b - √10)² = 25b² - 10√10 b + 10

D. a = 4x, b = 1

(4x - 1)² = 16x² - 8x + 1

CORRECT

Step-by-step explanation:

cestrela7 [59]4 years ago
3 0
The answer is <span>16x2 − 8x + 1
</span>
To be a perfect square trinomial, the rule must be used:
(a - b)² = a² - 2ab + b²

Let's check all choices
A. a = 7x, b = 4
(7x - 4)² = 49x² - 56x + 16

B. a = 2a, b = 5
(2a - 5)² = 4a² - 20a + 25

C. a = 5b, b = √10
(5b - √10)² = 25b² - 10√10 b + 10

D. a = 4x, b = 1
(4x - 1)² = 16x² - 8x + 1
CORRECT
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What are the first three terms of the Arithmetic Sequence an = 11 – 3(n – 1)?
vaieri [72.5K]

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Step-by-step explanation:

Write a systems of equations. tn=a+(n−1)d. sn=n2 (2a+(n−1)d). So,. 110=11+(n−1)d 726=n2(22+(n−1)d).

I hope this is right

3 0
3 years ago
Kelli and her family went to the beach for a vacation. They drove 293 miles in 7 hours to get there. ABOUT how many miles did th
12345 [234]

Answer:

41.86 miles each hour

Step-by-step explanation:

Kelli and her family went to the beach for a vacation. They drove 293 miles in 7 hours to get there. ABOUT how many miles did they drive each hour?

This Question is calculated as:

7 hours = 293 miles

1 hour = x miles

Cross Multiply

7 hours × x = 1 × 293 miles

x = 293 miles/7 hours

x = 41.857142857 miles per hour

x ≈ 41.86 miles per hour

Hence, they drove 41.86 miles each hour

4 0
3 years ago
Self storage center is a storage room that is 8 feet long 6 feet wide and 10 feet high what is the volume of the room
Cerrena [4.2K]

Answer:

480 cubic feet

Step-by-step explanation:

Given length of self storage = 8 feet

width of self storage = 6 feet

height of self storage = 10 feet.

Volume of rectangular object is calculated by formula

volume = length * width * height

substituting the value of  length , width and  height of  self storage room in above formula we have

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4 0
3 years ago
What number comes next in the pattern and why? 2,3,6,15,42
Ahat [919]
I think the answer is 123 

8 0
3 years ago
Solve 3^2x-5=81<br> Please show work
Strike441 [17]
Let's solve your equation step by step
(3^2)(x)-5=81
step 1:simplify both sides of the equation
(3^2)(x)-5=81
simplify.
9x-5=81
step 2:Add 5 to both sides.
9x-5+5=81+5
9x=86
divide both sides by 9.
9x/9=86/9
x=86/9
Answer:86/9

Hope this helps!
5 0
3 years ago
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