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3 years ago

Question: what should you do first to graph the equation? graph the equation.

Mathematics

1 answer:

Sliva [168]3 years ago

7 0

Answer:

Plot a point at the y-intercept.

In your case, you will need to plot 2 (y-intercept) on the graph first.

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(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=

Luda [366]

Answer:

The 99% confidence interval is $71.67 < \mu < 78.33$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 15$

The sample mean is $\= x = 75$

The standard deviation is $s = 5$

Given that confidence is 99% then the level of significance is mathematically represented as

$\alpha = 100 - 99$

$\alpha = 1\%$

$\alpha = 0.01$

Next we obtain the critical values of $\frac{ \alpha }{2}$ from the normal distribution table

The value is

$Z_{\frac{ \alpha }{2} } = 2.58$

Generally the margin for error is mathematically represented as

$E = Z_{\frac{ \alpha }{2} } * \frac{ s}{ \sqrt{n} }$

=> $E = 2.58 * \frac{ 5}{ \sqrt{15} }$

=> $E = 3.3307$

The 99% confidence interval is mathematically represented as

$\= x -E < \mu < \= x +E$

=> $75 - 3.3307 < \mu$

=> $71.67 < \mu < 78.33$

3 0

3 years ago

If x = 7 units and h = 5 units, then what is the area of the triangle shown.

lukranit [14]

Answer:

Step-by-step explanation:

base × height so just multiple 7 and 5

7 0

3 years ago

Read 2 more answers

What is the height of an isosceles trapezoid, if the lengths of its bases are 5m and 11m, and the length of a leg 4m

son4ous [18]

In the isosceles trapezoid ABCD, draw two perpendiculars AM and BL from A and B to the side CD.

Now, LM = BA = 5 m

CD = CL + LM + MD

= CL + 5 + CL (CL = MD)

= 2CL + 5

But, CD = 11

Therefore, 2CL + 5 = 11

2CL = 11 - 5

= 6

CL = 6/2 = 3m

MD = 3m

Now, consider the right triangle AMD.

We have,

$AM^{2} = AD^{2} - MD^{2}$

= $4^{2} - 3^{2}$

= 16 - 9

= 7

Hence, height of the isosceles trapezoid = AM = $\sqrt{7} m$

6 0

3 years ago

9р - Зр equivalent expression

Vesnalui [34]

Answer:

Step-by-step explanation:

9p - 3p needs to have the like terms combined. 9 - 3 is 6, and since you have to keep the p, the answer is 6p.

7 0

2 years ago

Please help.

kompoz [17]

The answer is going to be C

3 0

3 years ago