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3 years ago

URGENT HELP NEEDED!!!

Mathematics

1 answer:

lions [1.4K]3 years ago

6 0

Answer:

$(a+b)^{2}- \sqrt[3]{x . 3y}$

Step-by-step explanation:

Subtract the cube root of the product of x and 3y from the square of the sum of a and b.

A = The square of the sum of a and b is $(a+b)^{2}$

B = The cube root of the product of x and 3y is $\sqrt[3]{x . 3y}$

They want us to subtract B from A so B - A, therefore the following.

$(a+b)^{2}- \sqrt[3]{x . 3y}$

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Mumz [18]

Answer:

Ships A and B are 1,425 feet apart and detect a submarine below them. The angle of depression from ship A to the submarine is 59°, and the angle of depression from ship B to the submarine is 47°.

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The distance from ship A to the submarine is about

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3 years ago

What is y in the first line if the line passing though (-1,y) and (1,0) perpendicular to the line passing (8,4) and (-1,1) ?

malfutka [58]

Answer:

$6$ .

Step-by-step explanation:

A line that goes through $(x_{0},\, y_{0})$ and $(x_{1},\, y_{1})$ where $x_{0} \ne x_{1}$ would have a slope of $m = (x_{1} - x_{0}) / (y_{1} - y_{0})$ .

The slope of the line that goes through $(8,\, 4)$ and $(-1,\, 1)$ would thus be:

$\begin{aligned}m_{2} &= \frac{1 - 4}{(-1) - 8} \\ &= \frac{(-3)}{(-9)} \\ &= \frac{1}{3}\end{aligned}$ .

Two lines in a cartesian plane are perpendicular to one another if and only if the product of their slopes is $(-1)$ .

Thus, if $m_{1}$ and $m_{2}$ denote the slope of the first and second lines in this question, $m_{1}\, m_{2} = (-1)$ since the two lines are perpendicular to one another. Since $m_{2} = (1/3)$ , the slope of the first line would be:

$\begin{aligned} m_{1} &= \frac{(-1)}{m_{2}} \\ &= \frac{(-1)}{(1/3)} \\ &= (-3)\end{aligned}$ .

Given that the first line goes through the point $(1,\, 0)$ , the point-slope equation of that line would be:

$(y - 0) = (-3)\, (x - 1)$ .

$y = -3\, x + 3$ .

Substitute in $x = (-1)$ to find the $y$ -coordinate of the point in question:

$y = -3\times (-1) + 3 = 6$ .

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3 years ago

What is the answer to mr. House wrote 8tenths minus 5 hundredths on the board.Maggie said the answer is 3 hundredths because 8 m

kicyunya [14]

No ou are wrong because 8 tenths = 80 while 5 hundredths= 500 the right answer is gonna be 80-500= -420

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3 years ago

The circle has a circumference of 9.42 units. What is the area of the square ? Use 3.14 for pi. Explain how you got your answer

Elan Coil [88]

So 9.42 is the circumference 9.42/3.14 is 3 and 3 is your diameter 1.5 is your radius and area is radius times radius then times pi so 1.5 x 1.5 = 2.25
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3 years ago