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3 years ago

8 3/4 ÷ (-3 1/2) PLS I NEED HELP

Mathematics

2 answers:

Basile [38]3 years ago

7 0

Answer:

you could have used a calculator

Step-by-step explanation:

-2.8

notsponge [240]3 years ago

4 0

Answer:

-2.8

Step-by-step explanation:

-2.8

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Artemon [7]

So from these given details will be right choice A. sure because given that 1 unit cube = 1 inch so from this result that 48 unit cubes = 48 cubic inches

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3 years ago

From the lighthouse 1000 ft above sea level the angle of depression to boat a is 29 degress.a little bit later the boat moved cl

AnnyKZ [126]

Answer: The boat moved 768.51 feet in that time .

Step-by-step explanation:

Since we have given that

Height of the lighthouse = 1000 feet

Angle depression to boat 'a' = 29°

Angle of depression to shore 'b' = 44°

Consider ΔABC,

$\tan 44\textdegree=\frac{AB}{BC}\\\\\tan 44\textdegree=\frac{1000}{BC}\\\\BC=\frac{1000}{\tan 44\textdegree}\\\\BC=1035.53\ feet$

Now, Consider, ΔABD,

$\tan 29\textdegree=\frac{AB}{BD}\\\\\tan 29\textdegree=\frac{1000}{BD}\\\\BD=\frac{1000}{\tan 29\textdegree}\\\\BD=1804.04\ feet$

We need to find the distance that the boat moved in that time i.e. BC

so,

$DC=BD-BC\\\\CD=1804.04-1035.53\\\\CD=768.51\ feet$

Hence, the boat moved 768.51 feet in that time .

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3 years ago

The volume of a cylinder is pi times the radius r squared multiplied by the height h. Write an expression for the volume.

Paul [167]

V= Area of the circle at the base • height =
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3 years ago

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Mrrafil [7]

120 is the answer I’m not first but that’s alright

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3 years ago

Read 2 more answers

Simplify the following rational expression.

AlekseyPX

Step-by-step explanation:

$\frac{6 {x}^{3} }{15 {x}^{4} - 60x ^{3} } \\ \\ = \frac{6 {x}^{3} }{3 {x}^{3} (5 {x}- 20 )} \\ \\ = \frac{2 }{5 ({x}- 4 )}, \: \: x \neq \: 4\\ \\$

x = 4 makes the expression undefined.

Because at x = 4 denominator becomes zero, which makes the expression undefined.

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3 years ago