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EleoNora [17]
3 years ago
8

Write the equation of a line that is perpendicular to y = 5 and that passes through the point (-7,-5).

Mathematics
1 answer:
Alik [6]3 years ago
7 0

Answer:  x = -7

Step-by-step explanation:

x = -7 will be a vertical line passing through all y values, and perpendicular to y = 5

The attached graph shows the lines and the point.

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Write 1.0315x10^6 in standard form
lapo4ka [179]
<h3>1.0315×10⁶= 1.0315×1000000</h3><h3> = 1031500</h3><h3 /><h3>it is the standard form</h3><h3>1000000+000000+30000+1000+500+00+0</h3>

please mark this answer as brainlist

5 0
3 years ago
A sample of 5 buttons is randomly selected and the following diameters are measured in inches. Give a point estimate for the pop
Helen [10]

Answer:

s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}

But we need to calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_I}{n}

And replacing we got:

\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072

And for the sample variance we have:

s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance \sigma^2

E(s^2) = \sigma^2

Step-by-step explanation:

For this case we have the following data:

1.04,1.00,1.13,1.08,1.11

And in order to estimate the population variance we can use the sample variance formula:

s^2 = \frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}

But we need to calculate the mean with the following formula:

\bar X = \frac{\sum_{i=1}^n X_I}{n}

And replacing we got:

\bar X = \frac{ 1.04+1.00+1.13+1.08+1.11}{5}= 1.072

And for the sample variance we have:

s^2 = \frac{(1.04-1.072)^2 +(1.00-1.072)^2 +(1.13-1.072)^2 +(1.08-1.072)^2 +(1.11-1.072)^2}{5-1}= 0.00277\ approx 0.003

And thi is the best estimator for the population variance since is an unbiased estimator od the population variance \sigma^2

E(s^2) = \sigma^2

3 0
3 years ago
Ahhh plz help last question!!! 15 points
Archy [21]
Area of triangle = 1/2(4)(4) = 16/2 = 8

if Area of square then A = 4 x 4 = 16

so answer
B. it's one half the area of square  of side length 4 units
4 0
3 years ago
Read 2 more answers
6(21)+6(31) evaluate
Artist 52 [7]
6(21)=72 6(31)=186
add 72+186=258

258 is the answer
6 0
3 years ago
Read 2 more answers
Gabe rounds 9.456 to the nearest hundredth. Then, he rounds the result to the nearest tenth. Last, he rounds that result to the
larisa86 [58]

Answer:

390

Step-by-step explanation:

.

4 0
3 years ago
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