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levacccp [35]
2 years ago
8

What's 78 x 100? someone help me im dumb.

Mathematics
1 answer:
Bumek [7]2 years ago
5 0

Answer:

7800

Step-by-step explanation:

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The harbormaster wants to place buoys where the river bottom is 20 feet below the surface of the water. Complete the absolute va
Natalija [7]

Answer:

The answer is below

Step-by-step explanation:

The bottom of a river makes a V-shape that can be modeled with the absolute value function, d(h) = ⅕ ⎜h − 240⎟ − 48, where d is the depth of the river bottom (in feet) and h is the horizontal distance to the left-hand shore (in feet). A ship risks running aground if the bottom of its keel (its lowest point under the water) reaches down to the river bottom. Suppose you are the harbormaster and you want to place buoys where the river bottom is 20 feet below the surface. Complete the absolute value equation to find the horizontal distance from the left shore at which the buoys should be placed

Answer:

To solve the problem, the depth of the water would be equated to the position of the river bottom.

d(h)=river \ bottom\\\\The \ river \ bottom=-20\ feet(below)\\\\d(h) = -20\\\\\frac{1}{5}|h-240|-48=-20\\ \\\frac{1}{5}|h-240|=-20+48\\\\\frac{1}{5}|h-240|=28\\\\|h-240|=28*5\\\\|h-240|=140\\\\h-240=140\ or\ h-240=-140\\\\h=140+240\ or\ h=-140+240\\\\h=380\ or\ h=100\\\\The\ buoys\ should\ be\ placed\ at\ 100\ feet\ and\ 380\ feet\ from\ left-hand\ shore

4 0
3 years ago
Find an equation of the line through (3,7) and parallel to y=3x-1
iren2701 [21]

Answer:

y = 3x -2

Step-by-step explanation:

If the line is parallel, that means it has the same slope. The given equation had a slope of 3, so the new line must also have a slope of 3.

You can plug the given coordinates into the slope-intercept form with a slope of 3 to find your answer.

y = m*x + b

7 = 3*3 + b

7 = 9 + b

-2 = b

y = 3x -2

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3 years ago
Type the expression that results from the following series of steps:
ale4655 [162]

Answer:

y-8.3

Step-by-step explanation:

Y-7÷3±6=

BODMAS  which means brackets ,of, division, multiplication ,addition, subtraction

we start by 7÷3=2.3.....

then 2.3..±6=8.3

then y-8.3 because one is a number and the other one is unknown we will leave it just like that

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3 years ago
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Help!!!!!!need the answer now!<br> find the distance between 4+3i and 6-2i
Colt1911 [192]

Answer:

2(plus or minus) 1i

Step-by-step explanation:

First find the distance between the number that is being multiplied by the variable. Then, find the distance in absolute value between the numbers that have been added or subtracted.

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A red die is tossed and then a green die is tossed. what is the probability that the red die shows a six or the green die shows
andrey2020 [161]

Answer:

1/12 or 1/6

Step-by-step explanation:

I need a multiple choice to help but if you get 2 attempts it one of these answers.

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