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Arte-miy333 [17]
3 years ago
15

Can i have help with this

Mathematics
2 answers:
Leto [7]3 years ago
6 0
Given ,

(5x^{2}-4x-1)-(-4x^{2}-4)

=> 5x^{2}-4x-1+4x^{2}+4

=> 9x^{2}-4x+3

hence option two is correct
Butoxors [25]3 years ago
5 0

Answer:

2nd option

Step-by-step explanation:

(5x² - 4x - 1) - (- 4x² - 4)

remove first set of parenthesis and distribute second set by - 1

= 5x² - 4x - 1 + 4x² + 4 ← collect like terms

= 9x² - 4x + 3

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Find the missing measure for a right circular cone given the following information. Find h if r = 5 and V = 100. 4 12 30
Blizzard [7]
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Volume of cone:
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Volume = 1/3 πr²h

-------------------------------------------------
Find Height:
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Given that the radius = 5 and the volume = 100, we will substitute these values into their respective variable and solve for height.

Volume = 1/3 πr²h
100 = 1/3 π (5)²h
h = 100 ÷ 1/3π(25)
h= 4 units (Nearest whole number)

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Answer: The height is 4 units.
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7 0
3 years ago
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a skateboard ramp has a slope 2/5.Which is the angle the ramp makes with the ground? A.66 degrees B. Not here C.24 degrees D.22
vovikov84 [41]
We are given with the slope of a ramp that is equal to 2/5, that is x = 5 and y = 2. In this case, we can find the angle of elevation by using the formula: tan Ф = y/x 
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3 0
4 years ago
Holly is earning money to buy a new bike. Her parents give her $20 to start and she sells lemonade for $1.50 a cup. a. write a l
slega [8]

Answer:

250= 1.50x + 20

Step-by-step explanation:

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4 0
3 years ago
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Among all pairs of numbers whose difference is 6, find a pair whose product is as small as possible. What is the minimum produc
mixas84 [53]

Answer:

pairs of numbers is 3,-3

Step-by-step explanation:

The computation is shown below:

Let us assume a and b are the pairs of the numbers whose difference is 6

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a - b = 6

a = 6 + b

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f = ab

f = (6 + b)b is minimum

Now

d ÷ db (6+ b)b = 0

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2b = -6

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6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%7Cx-1%7C%3D%5Csqrt%7Bx%7D" id="TexFormula1" title="|x-1|=\sqrt{x}" alt="|x-1|=\sqrt{x}" align
vodka [1.7K]
Isolate the radical, then raise each side of the equation to the power of its index.
Exact Form:
x
=
3
+
√
5
2
,
3
−
√
5
2
x
=
3
+
5
2
,
3
-
5
2

Decimal Form:
x
=
2.61803398
…
,
0.38196601
…
7 0
3 years ago
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