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3 years ago

I need help with 7 and 8 it ask If it's a right triangle

Mathematics

2 answers:

zvonat [6]3 years ago

5 0

If you know the law of sines and cosines, you will realize that not every triangle is a right triangle. If all of the three angles add up to 180, then you would say that it is a right triangle. Here is a sheet that you can use if you know sines and cosines law.

MAXImum [283]3 years ago

3 0

They are both not right angles. You can easily tell because you can't draw a square in the corner.

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Write the equation in standard form 4x-3=5y

just olya [345]

4x-3=5y

it would be : 4x - 5y = 3

8 0

3 years ago

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A business man invested 10,500 in a company and the value increases 3.5% each year. How much will be the investment after 12 yea

alekssr [168]

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2 years ago

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Suppose that x is the probability that a randomly selected person is left handed. The value (1-x) is the probability that the pe

harina [27]

Answer:

The maximum variance is 250.

Step-by-step explanation:

Consider the provided function.

$V(x)=1000x(1-x)$

$V(x)=1000x-1000x^2$

Differentiate the above function as shown:

$V'(x)=1000-2000x$

The double derivative of the provided function is:

$V''(x)=-2000$

To find maximum variance set first derivative equal to 0.

$1000-2000x=0$

$x=\frac{1}{2}$

The double derivative of the function at $x=\frac{1}{2}$ is less than 0.

Therefore, $x=\frac{1}{2}$ is a point of maximum.

Thus the maximum variance is:

$V(x)=1000(\frac{1}{2})-1000{\frac{1}{2}}^2$

$V(x)=250$

Hence, the maximum variance is 250.

4 0

3 years ago

WILL GIVE BRAINEST

Helga [31]

Answer is D. Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for th remaining varables

8 0

3 years ago

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All sacks of sugar have the same weight. All sacks of flour also have the same weight, but not necessarily the same as the weigh

maksim [4K]

Sugar: x pounds
flour: 2x + 5 pounds
2x + 3(2x + 5) = 40
2x + 6x + 15 = 40
8x = 25
x = 3.125
-> a sack of flour is 3.125 + 5 = 8.125 pounds
I hope it‘s coorect

4 0

3 years ago