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3 years ago

HELP PLEASE WHATS THE RIGHT ANSWER (I GOT 67)

Mathematics

2 answers:

Dvinal [7]3 years ago

5 0

Answer : the right answer is 66%

solniwko [45]3 years ago

3 0

Answer:

Step-by-step explanation:

66%

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Зх - у = 2<br> What is the y corddinate

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y=3x-2

Step-by-step explanation:

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An investment of $5,000 is made at a simple annual interest rate of 3%. How much additional money must be invested at a simple a

liubo4ka [24]

Answer: Additional money is $6250.

Step-by-step explanation:

Since we have given that

Amount of investment = $5000

Rate of simple interest = 3%

Let the additional amount of investment be 'x'.

Rate of simple interest = 3.9%

Total annual interest rate on total investment = 3.5%

So, According to question, it would be

$5000\times 0.03+x\times 0.039=(5000+x)\times 0.035\\\\150+0.039x=175+0.035x\\\\0.039x-0.035x=175-150\\\\0.004x=25\\\\x=\dfrac{25}{0.004}\\\\x=\$6250$

Hence, Additional money is $6250.

3 0

3 years ago

Prove that 2✓3 is an irrational number .

Ainat [17]

Answer:

$\bold{2\sqrt{3} ~is~irrational.}$

Step-by-step explanation:

Hi there!

$\bold{2\sqrt{3} }$ is an irrational number.

Now, what is an irrational number? An irrational number is a number that goes on for ever.

Examples: $\bold{\pi ,\sqrt{2} , \sqrt{3} ....}$

$\bold{\sqrt{3} }$ is a surd (an irrational square root)

If we multiply 2 times $\bold{\sqrt{3} }$ , we will get an irrational number.

Thus, $\bold{2\sqrt{3} }$ is an irrational number.

Hope it helps! Enjoy your day!

$\bold{GazingAtTheStars}$

3 0

2 years ago

A potter forms a piece of clay into a cylinder. As he rolls it, the length, L, of the cylinder increases and the radius, r, decr

Elena L [17]

Answer:

$0.0727 cm\: per\: second$

Step-by-step explanation:

The Volume of the cylinder is constant

Volume of a cylinder, $V=\pi r^2h$

Given:

$\frac{dh}{dt}=0.8 cm/sec\\ r=2cm\\h=11cm\\\frac{dr}{dt}=?$

$\frac{dV}{dt}=\pi r^2 \frac{dh}{dt} + 2\pi r h\frac{dr}{dt}$

$0=\pi* 2^2*0.8 + 2\pi*2*11\frac{dr}{dt}\\0=3.2\pi+44\pi\frac{dr}{dt}\\44\pi\frac{dr}{dt}=-3.2\pi\\\frac{dr}{dt}=\frac{-3.2\pi}{44\pi} \\\frac{dr}{dt}=-0.0727 cm\: per\: second$

The radius is decreasing at a rate of $0.0727 cm\: per\: second$

7 0

3 years ago