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3 years ago

What is the equation of a line with a slope of -2 that passes through the point (6,8)

Mathematics

2 answers:

kakasveta [241]3 years ago

3 0

Answer:

Step-by-step explanation:

hello :

the point-slope formula is :

y - y_1 = m(x - x_1) the point is A(x_1 , y_1 ) , m : the slope

in this exercice : x_1 = 6 y_1 = 8 m = -2

so : y - 8 = -2(x - 6) ...an equation for this line .

Valentin [98]3 years ago

3 0

Answer:D) 2x+y=4

Step-by-step explanation:

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50 pts if you answer plz plz

Nikitich [7]

Answer:

Step-by-step explanation:

Table 1: Add 7 to each output too get the answer for each input. Example output 1 +7 =Output 8

Table 2: Multiply each input by 6 to get the answer for each output. Example input 4 x 6=output 24

Table 3: Add 10 to each input to get output. Example 10+10=20 output

8 0

3 years ago

PLEASE HELP

Katarina [22]

Answer:

Step-by-step explanation:

15 + c² = 96

c² = 96 - 15

c² = 81

c² = 9²

c = 9

5 0

3 years ago

Read 2 more answers

The odds that it will snow tomorrow are 9 to 6. What is the probability that it will not snow tomorrow?a) 0.1818

kolezko [41]

Answer:

a) 0.1818

Step-by-step explanation:

Given that:

The odd that it'll snow tomorrow is 9 to 6

The probability that it will snow tomorrow $=\dfrac{9}{9+6}$

$=\dfrac{9}{15}$

= 0.6

The probability that it'll not snow tomorrow $= 1 - \dfrac{9}{15}$

$= \dfrac{15-9}{15}$

$=\dfrac{6}{15}$

= 0.4

Let assume that the odd that it'll snow tomorrow is 9 to 2

The probability that it will snow tomorrow $=\dfrac{9}{9+2}$

$=\dfrac{9}{11}$

= 0.8181

The probability that it'll not snow tomorrow $= 1 - \dfrac{9}{11}$

$= \dfrac{11-9}{11}$

$=\dfrac{2}{11}$

= 0.1818

4 0

2 years ago

7. Ella and her family normally pay $165 per

Anna [14]

Answer:

$99

Step-by-step explanation:

Cost of electricity per year= $165

Tax per month= 5%

Amount of tax paid per month= 5% of $165

= 0.05 × 165

= $8.25

Ella's family pays $8.25 tax per month

There are 12 months in 1 year

Ella's family will pay Ina year = $8.25 × 12

= $99

Ella's family will pay $99 tax for an entire year

4 0

2 years ago

A math teacher was frustrated at the number of students leaving their graphing calculator behind in her classroom at the end of

AleksAgata [21]

Answer:

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

A random sample of 50 students is selected, and of the students questioned, 32 had their names written on their graphing calculators.

This means that $n = 50, \pi = \frac{32}{50} = 0.64$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 - 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.4652$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.64 + 2.575\sqrt{\frac{0.64*0.36}{50}} = 0.8148$

The 99% confidence interval for the proportion of all students at this school who have their names written on their graphing calculators is (0.4652, 0.8148).

8 0

2 years ago