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3 years ago

If John loses -$50 over 10 days, on average how much does he lose in one day?

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

6 0

Answer:

Step-by-step explanation:

take the total ($50) and divide that by the amount of days you lose said money (10)

bonus: cat

tankabanditka [31]3 years ago

4 0

Answer:

Step-by-step explanation:

If John loses $50 over 10 days, just divide 50 by ten.

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The next model of a sports car will cost 14.1% more than the current model. The current model costs $53,000 . How much will the

Nataly [62]

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3 years ago

A. Use the one-mean t-interval procedure with the sample mean, sample size, sample standard deviation, and confidence level

PtichkaEL [24]

Answer:

a) (17.227, 22.773)

b) 2.773

c) 2.773

Step-by-step explanation:

Given:

Sample size, n = 25

Standard deviation, s = 4

Sample mean, x' = 20

Level of significance, a = 0.98 = 1 - 0.98 = 0.02

The degrees of freedom, df, for a t-distribution = n - 1 = 25 - 1 = 24

Using the t table, the Critical value = $t_\alpha _/_2, _d_f = t_0_._0_2_/_2, _2_4 = t_0_._0_1_, _2_4 = 3.4668$

Margin of error, E = $t_\alpha _/_2, _d_f * \frac{\sigma}{\sqrt{n}} = 3.4668 * \frac{4}{\sqrt{25}} = 2.773$

Limits of 98% confidence interval, we have:

Lower limit : x' - M.E = 20 - 2.773 = 17.227

Upper limit: x' + M.E = 20 + 2.773 = 22.773

Therefore, (17.227, 22.773) is 98% confidence interval.

b) Let's the margin of error by taking half the length of the confidence interval.

Since we are to use half the length of CI, we have:

$M.E = \frac{22.773 - 17.227}{2} = 2.773$

c) $M.E = t_\alpha _/_2, _d_f *s/\sqrt{n}$

$= t * \frac{s}{\sqrt{n}} = 3.4668 * \frac{4}{\sqrt{25}} = 2.773$

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3 years ago

Please help! Photo inside!

I am Lyosha [343]

Hello from MrBillDoesMath!

Answer:

Area of tile = 24

Discussion:

The area of the triangle is

(1/2) Base * height =

(1/2) 6 * 8 =

(1/2) 48 =

Thank you,

MrB

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3 years ago

Which graph shows the solution to the following system? y= 1/4x - 2

iogann1982 [59]

Y = 1/4 x - 2

=> a linear function => a straigh line

=> slope = the coefficient of x => slope = 1/4

=> x = 0 => the y-intercept = -2

=> y = 0 => 0 = 1/4 x - 2 =>x = 8 => point (8,0)

With all that information you can identify the graph because it is a straight line that passes through (0,-2) and (8,0), its inclination (slope) is 1/4, and the graph goes through the quadrants I, III and IV (there are no points in the quadrant II)..

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3 years ago

A rectangle is 12 inches long and 7 inches wide. What is the area of the rectangle and square centimeters?

Airida [17]

Answer:

85in^2

Step-by-step explanation:

12x7=84in^2

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3 years ago