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3 years ago

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A plane traveling from City a to City B travels X miles per hour for total of 4.5 hours that plane takes the same route on the r

eturn traveling 25 miles per hour faster for a total of 4.25 hours what is the total distance the plane travels?

1 answer:

Mkey [24]3 years ago

6 0

Your equation is gonna be
4.5a + 2.5b = 4.25

I forgot how lol but you gotta now solve for A and B.

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An 18-foot ladder is leaning against a vertical brick wall. The base of the ladder is 9 feet away from the wall.

Triss [41]

A^2 + b^2 = c^2
a^2 + 9^2 = 18^2
a^2 + 81 = 324
a^2 = 243
a = 15.589 = 15.6 feet is the angle the ladder is at :)

8 0

3 years ago

Elena and jade are 12 miles apart on a path when they star moving toward each other . Elena runs at a constant speed of 5 miles

inna [77]

Answer:

1.5 hrs

Step-by-step explanation:

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2 years ago

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

A box contains 48 snack size bags of popcorn

Vika [28.1K]

The answer should be 15/24 of an ouce beacause 35 minus 5 ounces because the box weighs 5 ounces when it is empty. Then, you need to do 30 dibided by to to get 30/48 which is reduced to 15/24.

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3 years ago

Find ∅ round to the nearest degree <br>A. 24° <br>B. 66° <br>C. 64° <br>D. 26°

Katyanochek1 [597]

Answer:

C

Step-by-step explanation:

Using the cosine ratio in the right triangle

cosθ = $\frac{adjacent}{hypotenuse}$ = $\frac{7}{16}$ , then

θ = $cos^{-1}$ ( $\frac{7}{16}$ ) ≈ 64° ( to the nearest degree )

7 0

3 years ago