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Lorico [155]
3 years ago
15

Multiply the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending pow

ers of x. (5x2 - 7)(5x2 + 7)
Mathematics
2 answers:
GuDViN [60]3 years ago
5 0

Answer:25x^4 - 49

Step-by-step explanation:

5x^2 - 7)(5x^2 + 7)

(5x^2)^2 - 7^2

25x^4 - 49

Fynjy0 [20]3 years ago
3 0
(5x^2 - 7)(5x^2 + 7)
(5x^2)^2 - 7^2
25x^4 - 49

Answer:
25x^4 - 49

Hope this helps.
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Pls help
KATRIN_1 [288]

Answer:

169.04 in² (nearest hundredth)

Step-by-step explanation:

Surface area of a cone = \pir² + \pirl

(where r = radius of the base and l = slant height)

Given slant height l = 10 and surface area = 188.5

Surface area  = \pir² + \pirl

188.5 = \pir² + 10\pir

\pir² + 10\pir - 188.5 = 0

r = \frac{-10\pi +\sqrt{(10\pi )^2-(4\times\pi \times-188.5)} }{2\pi } = 4.219621117...

Volume of a cone = (1/3)\pir²h

(where r = radius of the base and h = height)

We need to find an expression for h in terms of l using Pythagoras' Theorem a² + b² = c², where a = radius, b = height and c = slant height

r² + h² = l²

h² = l² - r²

h = √(l² - r²)

Therefore, substituting found expression for h:

volume of a cone = (1/3)\pir²√(l² - r²)

Given slant height l = 10 and r = 4.219621117...

volume = 169.0431969... = 169.04 in² (nearest hundredth)

5 0
3 years ago
Read 2 more answers
What is the volume of a cone with a radius of 4 centimeters and a height of 9 centimeters? Use 3.14 to estimate p.
lilavasa [31]
The volume is 150.8 cm³


6 0
3 years ago
Read 2 more answers
.Adam is 3 times as old as his sister Naya , in 4 years he will be twice as old as Naya , how old are Adam and Naya now ?
galben [10]

Step-by-step explanation:

The answer is

If naya is 4 years old then 3 times Adam age is 12

After 4 years naya is 8 years old and Adam is 16

We can check it because twice of 8 is 16

So now Adam is 12 years and Naya is 4 years old

5 0
4 years ago
Given the sequence 34, 42, 50,58, 66.. find the recursive formula & explicit formulas
Marizza181 [45]

Sequence: 34, 42, 50, 58, 66

Since the difference between consecutive terms is 8, we deduce it is an arithmetic sequence, the recursive formula would be:

a_n=a_{n-1}+8

Given that the first term is 34 and the common difference is 8, the explicit formula would be:

a_n=34+(n-1)\cdot8

7 0
1 year ago
250tThe population of Sasquatch in Salt Lake County was modeled by the function P(t)wheret + 25t = 0 represents the year 1803. W
jeyben [28]

Solution

Given the population function to be;

P(t)=\frac{250t}{t+25}

When P(t) = 150

\begin{gathered} \Rightarrow\frac{250t}{t+25}=150 \\  \\ \Rightarrow250t=150(t+25) \\  \\ \Rightarrow250t=150t+3750 \\  \\ \Rightarrow250t-150t=3750 \\  \\ \Rightarrow100t=3750 \\  \\ \Rightarrow t=37.5\approx38 \end{gathered}

1803 + 38 = 1841.

He

5 0
1 year ago
Read 2 more answers
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