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jonny
1 month ago
15

An experiment consists of determining the speed of automobiles on a highway using a radar equipment. The random variable in this

experiment is a:
Mathematics
1 answer:
zzz [12.3K]1 month ago
8 0

Answer:

the speed value produced by the radar equipment.

Step-by-step explanation:

In an experiment, a random variable is typically referred to as a dependent variable. In this context, the random variable pertains to the speed value produced by the radar equipment. This value is reliant on the actual speeds of the cars that go past the equipment. A higher speed results in a greater value shown by the radar. Thus, it relies entirely on the automobiles.

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To minimize the amount of paper used, the dimensions should be perfectly matched such that the diameter equals the height. Therefore, if we denote the diameter as x, then the height equals x and the radius is x/2.
Consequently, the cone's volume is expressed as:
V=1/3πr^2h
=1/3*π*(x/2)^2*x
=0.262x^3
From this, we can derive that:
33=0.262x^3
thus, we find x^3=125.95
solving gives x=(125.95)^(1/3)
resulting in x=5.0126=5.01 cm
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Titus works at a hotel. Part of his job is to keep the complimentary pitcher of water at least half full and always with ice. Wh
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The solution is 160 minutes

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The typical college freshman spends an average of μ=150 minutes per day, with a standard deviation of σ=50 minutes, on social me
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Stores often mark up items each year to cover inflation. Last year, a CD at Juan’s Tunes cost $12.95. This year, the cost was ma
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7 0
1 month ago
Read 2 more answers
În vacanța de vară, Mihai, Maria și
Leona [12618]

Răspuns:

Mihai = 12kg

Maria = 15kg

Teodor = 13 kg

Explicație pas cu pas:

Să folosim x pentru cantitatea de plante medicinale adunate de Mihai.

Să denumim y cantitatea adunată de Maria.

Fie z cantitatea de plante medicinale adunate de Teodor.

În vacanța de vară, Mihai, Maria și Teodor au adunat în total 48 de kilograme de mentă;

x + y + z = 48......... 1

Dacă Maria a adunat cu 3 kilograme mai mult decât Mihai, atunci y = x + 3..... 2

Dacă Teodor a adunat de două ori mai puțin decât Mihai, atunci z = y - 2

Deci, z = (x + 3) - 2

Astfel, z = x + 1.... 3

Înlocuim ecuațiile 3 și 2 în ecuația 1;

<pDin ecuația 1:

x + y + z = 40

x + (x + 3) + (x + 1) = 40

3x + 4 = 40

Scădem 4 din ambele părți

3x = 36

x = 12

Substituim x = 12 în ecuația 2 pentru a determina y

y = x + 3

y = 12 + 3

y = 15

De asemenea, z se calculează astfel: z = x + 1

z = 12 + 1

z = 13

Astfel, Mihai a recoltat 12 kg de plante medicinale, Maria a adunat 15 kg, iar Teodor a strâns 13 kg.

8 0
1 month ago
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