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2 years ago

Find the surface area of a square pyramid with side length 4 mi and slant height 4 mi

Mathematics

1 answer:

aliina [53]2 years ago

7 0

Answer:

Step-by-step explanation:

you just do 4 times 4 hope this helps

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A line includes the points (-39,49) and (0,0). What is its equation in slope-intercept form?

malfutka [58]

Answer:

The equation in the slope-intercept form will be:

$y=-\frac{49}{39}x+0$

Step-by-step explanation:

Given the points

(-39,49)

(0,0)

Finding the slope between the points using the formula

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-39,\:49\right),\:\left(x_2,\:y_2\right)=\left(0,\:0\right)$

$m=\frac{0-49}{0-\left(-39\right)}$

$m=-\frac{49}{39}$

We know that the point-slope of the line equation is

$y-y_1=m\left(x-x_1\right)$

substituting $m=-\frac{49}{39}$ and (-39,49) in the equation

$y-y_1=m\left(x-x_1\right)$

$y-49=\frac{-49}{39}\left(x-\left(-39\right)\right)$

Now writing the equation in slope-intercept form

$y=mx+b$

where m is the slope and b is the y-intercept

$y-49=\frac{-49}{39}\left(x-\left(-39\right)\right)$

$y-49=\frac{-49}{39}\left(x+39\right)$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$y-49=-\frac{49}{39}\left(x+39\right)$

$\mathrm{Add\:}49\mathrm{\:to\:both\:sides}$

$y-49+49=-\frac{49}{39}\left(x+39\right)+49$

$y=-\frac{49}{39}x+0$ ∵ $y=mx+b$

Where

$m=-\frac{49}{39}$ and the y-intercept i.e. $b=0$

Therefore, the equation in the slope-intercept form will be:

$y=-\frac{49}{39}x+0$

5 0

3 years ago

Plsssss helppp sooonnnn

Oxana [17]

Answer:

4 and -6≤x<0

Step-by-step explanation:

6. 4

7. -6≤x<0

5 0

2 years ago

What is the rate of change of the function represented by the table?

never [62]

Subtracting by 1 is the rate of change represented

8 0

2 years ago

PLEASE HELP ASAP!

Reil [10]

Answer:

i think 125

Step-by-step explanation:

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3 years ago

0f 30 students 1/3 play sports. of those who play sport, 2/5 play soccer. how many students play soccer

BartSMP [9]

Answer:

Step-by-step explanation:

1/3 of 30 is 10 and 2/5 of 10 is 4. Thats Your Answer.

6 0

3 years ago