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Lesechka [4]
3 years ago
9

Estimate the quotient 358 divided by3

Mathematics
1 answer:
Harrizon [31]3 years ago
5 0
Estimate the quotient of 358 divided by 3. Let’s start estimating without using calculator. => 358 = 300 + 50 + 8 Let’s have the 300 first. How many 3s are there in 300 => 300 / 3 = 100 – so there are 100 3s Next, let’s have the 50. How many 3s are there in 50 => 50 / 3 = 16 remainder 2. So let’s go to the last number the 8 + 2 remainder = 10 => How many 3s are there in 10? => 10 / 3 = 3 remainder 1 => 100 + 16 + 3 = 119 remainder 1 let’s check => 119 * 3 = 357 + 1 = 358
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Answer:

23cm

Step-by-step explanation:

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Step-by-step explanation:

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7. Which model is most appropriate for the data set?
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none of the above

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2. Suppose that a particular medical procedure has a cost that is approximately normally distributed with a mean of $19,800 and
Lina20 [59]

Answer:

a) 0.5085

b) -1.6551

c) 0.8103834

Step-by-step explanation:

Data provided in the question:

Mean = $19,800

Standard deviation, s = $2,900

Now,

z score = [ X - Mean ] ÷ s

a) The procedure costs between $18,000 and $22,000

For X = $22,000

z-score = [ $22,000 - $19,800 ] ÷ $2,900

= 0.7586

For X = $18,000

z-score = [ $18,000 - $19,800 ] ÷ $2,900

= -0.62069

P(procedure costs between $18,000 and $22,000)

= P(z < 0.7586) - P( z < -0.62069)

= 0.7759541 - 0.2674018           [ P value from standard z table ]

= 0.5085

b) The procedure costs less than $15,000

For X = $15,000

z-score = [ $15,000 - $19,800 ] ÷ $2,900

= -1.6551

thus,

The procedure costs less than $15,000

P (z < -1.655172 )

= 0.0489448                      [ P value from standard z table ]

c) The procedure costs more than $17,250

z-score = [ $17,250 - $19,800 ] ÷ $2,900

= -0.87931

thus,

The procedure costs more than $17,250.

P (z > -0.87931  ) = 0.8103834

4 0
3 years ago
Solve the system of equations using elimination/combinations-2x -y = -4 x + 2y =5
sweet-ann [11.9K]

Answer:

x = 1, y = 2

Step-by-step explanation:

In the elimination method to solve a system of linear equations, one of the two equations is added/subtracted to the other, in order to eliminate one variable from the equation.

In this problem, we have the following two equations:

-2x-y=-4\\x+2y=5

To solve the system, first we multiply by 2 both sides of the second equation, and we get:

2(x+2y)=2(5)\\2x+4y=10

So now the system is

-2x-y=-4\\2x+4y=10

Now we add the two equations, and we get:

(-2x+2x)+(-y+4y)=(-4+10)\\3y=6

So, we get

y=\frac{6}{3}=2

Now we can substitute this value of y into the eq.(2), and we get:

x+2y=5\\x+2(2)=5\\x+4=5\\x=5-4=1

3 0
3 years ago
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