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2 years ago

What's The scientific notation for 42,000

Mathematics

2 answers:

tester [92]2 years ago

5 0

I think it's (4.2X10^3)

stira [4]2 years ago

5 0

4.2x10^4

You get this by moving the decimal 4 times to the left. To check your answer plug into the calculator and you should get 42,000

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I need help on the Quadratic Formula.

sasho [114]

1. 3x² + 12x - 15 = 0
 x = -(12) +/- √((12)² - 4(3)(-15))
 2(3)
 x = -12 +/- √(144 + 180)
 6
 x = -12 +/- √(324)
 6
 x = -12 +/- 18 
 6
 x = -2 + 3
 x = -2 + 3 x = -2 - 3
 x = 1 x = -5
--------------------------------------------------------------------------------------------
2. 5x² + 11x + 2 = 0
 x = -(11) +/- √((11)² - 4(5)(2))
 2(5)
 x = -11 +/- √(121 - 40)
 10
 x = -11 +/- √(81)
 10
 x = -11 +/- 9
 10
 x = -1¹/₁₀ + ⁹/₁₀
 x = -1¹/₁₀ + ⁹/₁₀ x = -1¹/₁₀ - ⁹/₁₀
 x = ¹/₅ x = -2
--------------------------------------------------------------------------------------------
3. 2x² - 11x + 14 = 0
 x = -(-11) +/- √((-11)² - 4(2)(14))
 2(3)
 x = 11 +/- √(121 - 102)
 6
 x = 11 +/- √(9)
 6
 x = 11 +/- 3
 6
 x = 1⁵/₆ + ¹/₂
 x = 1⁵/₆ + ¹/₂ x = 1⁵/₆ - ¹/₂
 x = 2¹/₃ x = 1¹/₃
--------------------------------------------------------------------------------------------
4. 2x² - x - 15 = 0
 x = -(-1) +/- √((-1)² - 4(2)(-15))
 2(2)
 x = 1 +/- √(1 + 120)
 4
 x = 1 +/- √(121)
 4
 x = 1 +/- 11
 4
 x = ¹/₄ + 2³/₄
 x = ¹/₄ + 2³/₄ x = ¹/₄ - 2³/₄
 x = 3 x = 2¹/₂

4 0

2 years ago

Simplify these expressions: 5m^2 x 2m 60cf/3f 15c-5f/2

Mars2501 [29]

5m^2 x 2m = 10m^3
60cf/3f = 20cf^2
15c-5f/2 = Cannot be simplified further

6 0

2 years ago

If JL=5x+2 find JL 27 3x-1

iris [78.8K]

Answer:

JL=3x

Step-by-step explanation:

JL=5x+2

-2. -2

JL=3x

8 0

3 years ago

Please help NEED NOW thank youuu

dexar [7]

y= -2x + 4 is the answer

6 0

1 year ago

Read 2 more answers

A right prism has a triangular base. The length of the base is 6 meters and the height of the base is 4 meters. The height of th

NNADVOKAT [17]

The volume of this right prism that has a triangular base is equal to 108 cubic meters.

<h3>The volume of a right prism.</h3>

Mathematically, the volume of a right prism is given by this formula:

V = L x W x H

Where:

L is the length.

W is the width.

H is the height.

V is the volume.

Given the following data:

Length of base = 6 meters.

Width of base = 4 meters. cm.

Height of prism = 4.5 meters.

Substituting the given parameters into the formula, we have;

V = 6 x 4 x 5

V = 108 cubic meters.

Read more on volume of prism here: brainly.com/question/3867601

3 0

1 year ago