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Jobisdone [24]
3 years ago
9

If sinx is approximately 0.2588, what is the measurement of x to the nearest degree? Approximately, what is the cosine of the an

gle that is complementary to x?
Mathematics
1 answer:
Vanyuwa [196]3 years ago
7 0
To solve this, you must have a calculator that can do arcsin. When you do this, you get an angle of approximately 15 degrees.
A complementary angle is one that adds to 90 degrees.
So, to find this, simplt do 90-15 to get 75 degrees.
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What is the final amount if 893 is decreased by 2% followed by a further 7% decrease?
Ahat [919]

Answer 62 because if you work it out it wi give it

6 0
3 years ago
At what point on the paraboloid y = x2 + z2 is the tangent plane parallel to the plane 3x + 2y + 7z = 2? (if an answer does not
Nikitich [7]
If f(x, y, z) = c represent a family of surfaces for different values of the constant c. The gradient of the function f defined as \nabla f is a vector normal to the surface f(x, y, z) = c.

Given <span>the paraboloid

y = x^2 + z^2.

We can rewrite it as a scalar value function f as follows:

f(x,y,z)=x^2-y+z^2=0

The normal to the </span><span>paraboloid at any point is given by:

\nabla f= i\frac{\partial}{\partial x}(x^2-y+z^2) - j\frac{\partial}{\partial y}(x^2-y+z^2) + k\frac{\partial}{\partial z}(x^2-y+z^2) \\  \\ =2xi-j+2zk

Also, the normal to the given plane 3x + 2y + 7z = 2 is given by:

3i+2j+7k

Equating the two normal vectors, we have:
</span>
2x=3\Rightarrow x= \frac{3}{2}  \\  \\ -1=2 \\ \\ 2z=7\Rightarrow z= \frac{7}{2}

Since, -1 = 2 is not possible, therefore there exist no such point <span>on the paraboloid y = x^2 + z^2 such that the tangent plane is parallel to the plane 3x + 2y + 7z = 2</span>.
4 0
4 years ago
12(x - 6) = 2(x - 9)
nlexa [21]

Answer:

Exact form: x = 27/5

Decimal form: x = 5.4

Mixed-number form: x = 5 2/5

Step-by-step explanation:

hope this helps :)

8 0
3 years ago
Ms.harper estimates that 125 students will attend the school dance. There was an actual total of 148 who attended the dance. Fin
Vladimir [108]

Answer:

The answer would be 118.4%

Step-by-step explanation:


4 0
3 years ago
Find the value of x with the steps
Mrrafil [7]
Two sides are same so that would be isosceles triangle. So then you would add up all angles and get this equation: 180 = 38 + x + x

2x = 142

x = 71

So the value of x is 71.
4 0
4 years ago
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