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3 years ago

5(12-8)-13+12-2(4-3)

Mathematics

2 answers:

Nataly_w [17]3 years ago

8 0

Answer:

5(12−8)−13+12−2(4−3)

dem82 [27]3 years ago

6 0

5(12-8)-13+12-2(4-3)

= 5(4)-13+12-2(1)

= 20-13+12-2

= 32-15

= 17

The answer is 17.

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How do you know when ratios are equivalent and when they are not equivalent

White raven [17]

Ratios are equivalent when that can be reduced or multiplied to be the same number.
Ex) 1:4 is the same as 2:8 or 4:16
10:20 is the same as 8:16 or 1:2

They are not equivalent if you can’t do this

7 0

3 years ago

Mopeds (small motorcycles with an engine capacity below 50 cm3) are very popular in Europe because of their mobility, ease of op

Anika [276]

Answer:

The probability that the maximum speed is at most 49 km/h is 0.8340.

Step-by-step explanation:

Let the random variable X be defined as the maximum speed of a moped.

The random variable X is Normally distributed with mean, μ = 46.8 km/h and standard deviation, σ = 1.75 km/h.

To compute the probability of a Normally distributed random variable we first need to convert the raw score of the random variable to a standardized or z-score.

The formula to convert X into z-score is:

$z=\frac{X-\mu}{\sigma}$

Compute the probability that the maximum speed is at most 49 km/h as follows:

Apply continuity correction:

P (X ≤ 49) = P (X < 49 - 0.50)

= P (X < 48.50)

$=P(\frac{X-\mu}{\sigma}$

*Use a z-table for the probability.

Thus, the probability that the maximum speed is at most 49 km/h is 0.8340.

8 0

4 years ago

Write a story problem about the lunchroom that matches the equation 5 +8+2=15.

zepelin [54]

Step-by-step explanation:

Kyrn, Tiler, and Zack went to buy their lunches. Kyrn bought a turkey sandwich and a bottle of water that only cost $5. Tiler bought only a ham and cheese sandwich that cost $2. Zack bought two slices of pizza and a bottle of cola that cost $8. How much money do they have to pay in total?

Note: I hope this is what you were looking for.

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3 years ago

HELP ASAP!! LINEAR EQUATIONS 6r =16+8r A. 8 B. -8 C. 2 D. -2

Savatey [412]

Answer:

B. -8

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

A fluid initially at 100◦C is placed outside on a day when the temperature is −10◦C, and the temperature of the fluid drops 20◦C

IRISSAK [1]

Answer:

Temperature drops to -10 deg C after 5.5 minutes and remains at that temperature.

Step-by-step explanation:

$t_{1} = 1, T_{1} = 80\\\\t_{2} = 2, T_{1} = 60\\\\t_{3} = 3, T_{3} = 40\\\\t_{4} = 4, T_{4} = 20\\\\t_{5} = 5, T_{5} = 0\\\\t_{6} = 6, T_{6} = -10\\\\t_{7} = 7, T_{7} = -10\\\\t_{8} = 8, T_{8} = -10\\\\t_{9} = 9, T_{9} = -10\\\\t_{10} = 10, T_{10} = -10\\$

8 0

4 years ago

5(12-8)-13+12-2(4-3)​

5(12-8)-13+12-2(4-3)