Answer: Time taken =1.25 x 10^1 hours 0r 4.5 x 10^4s
Step-by-step explanation:
Step 1
how long will it take the rocket to make the trip from Earth to the satellite = Time taken for the rocket to make the trip from Earth to the satellite
Speed = Distance / Time ,
Time = Distance / speed
Step 2-- solving
Time = Distance / speed
Time=2.5×10^5 miles/2.0×10^4 miles per hour
=12.5 hours = 1.25 x 10^1 hours
or 1.25 x 10^1 hours x 3600 = 45,000 seconds = 4.5 x 10^4s
The answer is: " <span>1.045 * 10¹⁰ " .</span>
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Explanation:
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"5.5 million = 5,500,000 = 5.5 * 10 ⁶ " ;
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"1.9 thousand = 1,900 = 1.9 * 10³ " ;
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So; "<span>5.5 million * 1.9 thousand" ;
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= (</span>5.5 * 10 ⁶) * (1.9 * 10³) = 5.5 * 10⁶ * 1.9 * 10³ ;
= 5.5 * 1.9 * 10⁶ * 10³ ;
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Note the following properties of exponents:
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xᵃ * xᵇ = x⁽ᵃ⁺ᵇ⁾ ;
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As such, " 10⁶ * 10³ = 10⁽ ⁶ ⁺ ³⁾ = 10⁹ " ;
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So; rewrite:
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5.5 * 1.9 * 10⁶ * 10³ ;
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= 5.5 * 1.9 * 10⁹ ;
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5.5 * 1.9 = 10.45 ;
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Rewrite as: " 10.45 * 10⁹ " ;
In scientific notation, we need to rewrite as an single digit integer, followed by a decimal and other values (if applicable); following by * 10 raised to the appropriately adjusted exponential power.
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As such, we write the value as:
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" 1.045 * 10¹⁰ " .
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Answer:
Step-by-step explanation:
The situation is a case of matched or paired samples since the samples are dependent. The two measurements are drawn from the same pair of individuals The parameter that is tested using matched pairs is the population mean and this is what teacher intends to use a hypothesis test for.
The correct option is
A) She gives each student a pretest. Then she teaches a lesson using a computer program. Afterwards, she gives each student a post test. The teacher wants to see if the difference in scores will show an improvement.
Answer:
x= 2.25
Step-by-step explanation:
-3x +10= 5x -8
<em>Bring all x terms to 1 side, constants to the other:</em>
5x +3x= 10 +8
8x= 18
<em>Divide</em><em> </em><em>both</em><em> </em><em>sides</em><em> </em><em>by</em><em> </em><em>8</em><em>:</em>
x= 18 ÷8
x= 2.25
∴ The value of x is 2.25 to make the equation to be true.
Confused on the question could I have a picture?