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anygoal [31]
2 years ago
8

Solve the equation d − 5 9 = 3 9

Mathematics
1 answer:
Allushta [10]2 years ago
4 0

Answer:

D = 98

Step-by-step explanation:

if you add up 59 + 39 you get 98 meaning D is 98

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The production rate of a steel factory is declining due to old machinery. Over the last eight days production has dropped by 1.2
Marysya12 [62]
Find the unit rate:

-1.2 tons
------------- = -0.15 ton/day, or -3/20 ton/day
 8 days
6 0
2 years ago
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The box of cereal shown below has a volume of 297.16 cubic inches. The width is 4.6 inches and the length is 6.8 inches. In inch
finlep [7]

Answer:

9.5 inches

Step-by-step explanation:

Volume = length × width × height

297.16 = 4.6 × 6.8 × height

height = 9.5

4 0
3 years ago
Choose the symbol that correctly compares the fractions below.
otez555 [7]

Answer:

\frac{1}{8}  <  \frac{2}{7}

1/8 < 2/7

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8 0
2 years ago
The amount of time a certain brand of light bulb lasts is normally distribued with a mean of 1300 hours and a standard deviation
Bezzdna [24]

Answer:

The interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.

Step-by-step explanation:

In statistics, the 68–95–99.7 rule, also recognized as the Empirical rule, is a shortcut used to recall that 68%, 95% and 99.7% of the values lie within one, two and three standard deviations of the mean, respectively.

Then,

  • P (µ - σ < X < µ + σ) = 0.68
  • P (µ - 2σ < X < µ + 2σ) = 0.95
  • P (µ - 3σ < X < µ + 3σ) = 0.997

he random variable <em>X</em> can be defined as the  amount of time a certain brand of light bulb lasts.

The random variable <em>X</em> is normally distributed with parameters <em>µ</em> = 1300 hours and <em>σ</em> = 90 hours.

Compute the interval of hours that represents the lifespan of the middle 68% of light bulbs as follows:

P (\mu - \sigma < X < \mu + \sigma) = 0.68\\\\P(1300-90

Thus, the interval of hours that represents the lifespan of the middle 68% of light bulbs is 1210 hours - 1390 hours.

4 0
3 years ago
Subtract 111 from 11010​
skelet666 [1.2K]

Answer : I think it is 10899

4 0
2 years ago
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