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noname [10]
3 years ago
15

Which of the following is the same as 8.4 × 102 ? a. 840 b. 84 c. 8,400 d. .84

Mathematics
2 answers:
torisob [31]3 years ago
8 0

Answer:  The correct option is (a). 840.

Step-by-step explanation:  We are given to select the number that is equivalent to the following decimal number :

N=8.4\times 10^2.

We know that

10 to the power positive number n means there are n zeroes after the digit 1.

Therefore, for the given decimal number, we get

N=8.4\times 10^2=8.4\times100=84\times10=840.

Thus, the required same number is 840.

Option (a) is CORRECT.

gavmur [86]3 years ago
7 0
Move the decimal 2 places to the right

8.4 becomes 840
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galina1969 [7]

Part A: 42.50+0.65x<60

Part B: You can enjoy maximum 26 rides at the fairy tale spectacular.

Step-by-step explanation:

Given,

Admission cost to fair = $42.50

Cost of each ride = $0.65

Amount you can spend = $60

Let,

x be the number of rides you can take.

Admission fair + Cost of each ride*number of rides < Amount you can spend

Part A: write an inequality that represents this situation.

42.50+0.65x<60

Part B: solve the inequality to determine the maximum number of rides you can enjoy at the fairy tale spectacular.

42.50+0.65x

Dividing both sides by 0.65

\frac{0.65x}{0.65}

Rounding off to nearest whole number;

x<27

Less than 27 means, you cannot take 27 rides, therefore,

You can enjoy maximum 26 rides at the fairy tale spectacular.

Keywords: inequality, division

Learn more about inequalities at:

  • brainly.com/question/10629017
  • brainly.com/question/10633485

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3 years ago
Peter has 6 sweaters, 4 pairs of jeans, and 3 pairs of shoes. how many different outfits can peter make using one sweater, one p
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Each year a scientist measures the water level of a local lake. Negative numbers indicate that the water level is below its hist
STatiana [176]

Answer:

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Given right triangle QRS, what is the value of sin(30°)?
m_a_m_a [10]

The value of sin(30°) is 1/2.

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The branch of mathematics concerned with specific functions of angles and their application to calculations.

The diagram is attached below:

We know,

sin 30= Perpendicular/ Hypotenuse.

As, the hypotenuse is the opposite side of the right angle and the perpendicular is opposite to the given angle.

So,

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sin 30 = 1/2

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3 0
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