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3 years ago

12

What is the solution of the inequality below for y? 2x - 5y = 15

1 answer:

kompoz [17]3 years ago

5 0

Answer:

Here's what I got:

y = -3+2x/5

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Find the value of sin θ, if tan θ=4; 180° < θ <270°

Nana76 [90]

You can use the identity
$\sin(x)=\sqrt{\dfrac{\tan(x)^{2}}{1+\tan(x)^{2}}}\\\\=-\sqrt{\dfrac{4^{2}}{1+4^{2}}}\\\\=-\sqrt{\dfrac{16\cdot 17}{17\cdot 17}}=\dfrac{-4\sqrt{17}}{17}$

The sign is negative because the angle is in the 3rd quadrant.

This corresponds to ...
a. -(4√17)/17

4 0

3 years ago

What is the simplified form of the equation 4/5n - 1/5 = 2/5n ?

Gnoma [55]

we are given

$\frac{4}{5}n -\frac{1}{5} =\frac{2}{5}n$

Firstly , we will multiply both sides by 5

$5*\frac{4}{5}n -5*\frac{1}{5} =5*\frac{2}{5}n$

now, we can simplify it

$4n-1 =2n$

$2n =1$

now, we can solve for n

$n =\frac{1}{2}$ .............Answer

8 0

4 years ago

What is five kilometers to the nearest tenth of a mile?

MissTica

Are you asking the equation or the answer

4 0

3 years ago

Read 2 more answers

The equatorial diameter of a model of earth is 25.6 cm. What is the total surface area of the model

Arisa [49]

Answer:

$2059.7\,\,cm^2$

Step-by-step explanation:

Diameter of a model of earth (D) = 25.6 cm

Radius of a model of earth (r) = $\frac{D}{2}=\frac{25.6}{2}=12.8\,\,cm$

Earth has the shape of a sphere.

Total surface area of a sphere = $4\pi r^2$

Put $\pi=\frac{22}{7}\,,\,r=12.8\,\,cm$

So,

Total surface area of the model $=4(\frac{22}{7})(12.8)^2=2059.7\,\,cm^2$

7 0

3 years ago

Three fair standard six-sided dice are rolled. What is the probability that the sum of the three numbers rolled does not exceed

Verdich [7]

Answer:

6/10=3/5

not sure if its correct

Step-by-step explanation:

3 0

3 years ago