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3 years ago

The data show the number of pieces of mail delivered to a single home address each day for three weeks.

Mathematics

2 answers:

blsea [12.9K]3 years ago

7 0

A dot plot would show 7 points for numbers greater than 2.

A histogram would have a maximum of 7 bars.

nataly862011 [7]3 years ago

3 0

Answer:

B and D

Step-by-step explanation:

Good luck on Edge

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Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 80 degrees at midnig

Vladimir [108]

Answer:

The equation is given by:

$D(t) = 80 + 9\sin{0.2618t}$

Step-by-step explanation:

Sine function:

Has the following format:

$y = A\sin{bx}$

In which A is the amplitude and $\frac{2\pi}{b}$ is the period.

Suppose you know the temperature is 80 degrees at midnight and the high and low temperature during the day are 89 and 71 degrees

This means that the amplitude of the sinusoidal variation function is 89 - 80 = 80 - 71 = 9. This means that $A = 9$

During a 24-hour day, which means that the period is 24. So

$\frac{2\pi}{b} = 24$

$24b = 2\pi$

$b = \frac{2\pi}{24}$

$b = 0.2618$

So the variation is:

$V(t) = 9\sin{0.2618t}$

Assuming t is the number of hours since midnight, find an equation for the temperature, D, in terms of t.

Initial temperature of 80, so:

$D(t) = 80 + V(t) = 80 + 9\sin{0.2618t}$

8 0

2 years ago

Find the slope of the line that passses thruogh 1,5 and 10,9

zheka24 [161]

The answer is 4/9

please see the attached picture for full solution

Hope it helps

Good luck on your assignment

6 0

3 years ago

I need help do y’all know answer…..

Tems11 [23]

Answer:

x = 70

Step-by-step explanation:

14 + x = 84

x= 84 - 14

x = 70

here x is the games lost.

hope tgis helps !

4 0

2 years ago

Two distinct solid fuel propellants, type A and type B, are being considered for a space program activity. Burning rates of the

Finger [1]

Answer:

C.I. = (2.297, 11.703)

Step-by-step explanation:

The t-statistic for difference of mean is given by,

$t=\frac{\bar{x_{1}}-\bar{x_{2}}}{\sqrt{\frac{s_{1}^{2}}{n_{1}}+\frac{s_{2}^{2}}{n_{2}}}}$

Here, $\bar{x_{1}}$ = 84

$\bar{x_{2}}$ = 7

s₁ = 4

n₁ = 12

s₂ = 6

n₂ = 18

Substituting all value in formula,

We get, t = -3.541 at 28 degree of freedom.

Using this formula, we get, t = 1.5342

Therefore, based on the data provided, the 99% confidence interval for the difference between the population means $\bar{x_{1}}-\bar{x_{2}}$ is: 2.297 < $\bar{x_{1}}-\bar{x_{2}}$ < 11.703

which indicates that we are 99% confident that the true difference between population means is contained by the interval (2.297, 11.703)

6 0

2 years ago

80.8=8(m+2.8) what is this answer

Aleonysh [2.5K]

The answer is 7.3, If you use the order of operations, When you divide 58.4 by 8 you get 7.3

8 0

2 years ago