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3 years ago

Which of the following expressions are equivalent to 6.53−(−4.11)+7.92

Mathematics

1 answer:

zavuch27 [327]3 years ago

7 0

Answer:

C -(-6.53)+4.11-(-7.92)−(−6.53 )+4.11−(−7.92)minus, left parenthesis, minus, 6, point, ...

Answer: Choice B and Choise C.Step-by-step explanation: Equivalent expressions are those expressions that have the same value but they look different.

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The weight distribution of parcels sent in a certain manner is normal with meanvalue 12 pounds and standard deviation 3.5 pounds

tino4ka555 [31]

Answer:

The parcel with weight less than 20.14 pounds are 99% of all parcels under the surcharge weight.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 12 pounds

Standard Deviation, σ = 3.5 pounds

We are given that the distribution of weights is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.99

$P( X < x) = P( z < \displaystyle\frac{x - 12}{3.5})=0.99$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 12}{3.5} = 2.326\\\\x = 20.141\approx 20.14$

Thus, parcel with weight less than 20.14 pounds are 99% of all parcels under the surcharge weight.

7 0

3 years ago

Can someone help? i really don’t understand. question is in the picture

Delicious77 [7]

Answer: (-1,2)

Step-by-step explanation:

5 0

3 years ago

5 Find the slope of the line that contains points (1,-3) and (-4,5).

ch4aika [34]

Answer:

gradient = m

m= $\frac{rise}{run}$

m= $\frac{1-(-4)}{-3-5}$

m= $\frac{5}{-8}$

3 0

3 years ago

Find (f+g)(x) when f(x)=x^3-2x^2+1 and g(x)=4x^3-5x+7

Oliga [24]

Answer:

5x³ - 2x² - 5x + 8

Step-by-step explanation:

[ Refer to the attachment ]

8 0

3 years ago

A rectangular swimming pool has a length of 50 m, a width of 25 m, and a depth of 1.75 meters. What is the volume of water neede

Ahat [919]

Answer:

2187.5 cubic meters of water

Step-by-step explanation:

Volume of rectangle = L * W * D

V = 50 * 25 * 1.75

V = 2187.5

5 0

3 years ago

Read 2 more answers