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lina2011 [118]
3 years ago
13

Help me please, i’m confused. thanks!

Mathematics
2 answers:
AnnyKZ [126]3 years ago
7 0
The answer is x=9/5. Hope this helps!
harkovskaia [24]3 years ago
3 0

Answer:

Step-by-step explanation:

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Which of the following is a function
Travka [436]

Answer:

This question is incomplete since you did not provide the options needed. Anyway, I will give you an explanation that will be useful for you to understand this.

Step-by-step explanation:

Understanding what a function is will allow you to have more clarity when solving the functions exercises and you will be prepared to understand more concepts that surround functions such as domain, image, relative extremes, their representation on the axes, etc.

A function is a relationship between two variables, one independent (x) and the other dependent (y) and for each value of x there corresponds ONE SINGLE VALUE OF <em>y</em>.

For example :

f(x) = 3x2 + 1

6 0
3 years ago
Please someone help with that
Maurinko [17]

Answer:

  a) -tan(π/4) = -1

  b) -1/sin(π/3) = -(2/3)√3

Step-by-step explanation:

The given functions are reciprocals of the primary trig functions:

  cot(x) = 1/tan(x)

  csc(x) = 1/sin(x)

The tangent function has a period of π, and is equal to the cotangent of the complementary angle.

__

<h3>a)</h3>

The given angle is an alias of -π/4, so we can write ...

  cot(7π/4) = cot(-π/4) = -cot(π/4) = -tan(π/2 -π/4) = -tan(π/4)

  -tan(π/4) = -1

__

<h3>b)</h3>

  csc(-π/3) = 1/sin(-π/3) = -1/sin(π/3) = -1/(√3/2) = -2/√3

  -1/sin(π/3) = -2√3/3

6 0
2 years ago
A recent article found that Massachusetts residents spent an average of $860.70 on the lottery in 2010, more than three times th
SCORPION-xisa [38]
JkjkkKkjahzhzjLlJsloUzjsjsjwwnmwmwmwmwmwmwmwmeemekejrjrjrj
8 0
3 years ago
I need help finding both volume and surface area
Svetradugi [14.3K]

Answer:

<u>Volume</u>

For the rectangle, h = 3cm, l = 8cm, w = 6cm
V = length x width x height
V = 8cm x 6cm x 3cm
V = 144cm^3

For the semi circle, we need to find the radius. The radius is width/2, so 6cm/2 = 3cm. r = 3cm, \pi = 3.14
V = radius^2 x height x \pi
V = 3cm^2 x 3cm x 3.14
V = 84.8 cm^3/2 (because the cylinder needs to be divided to form a semi-circle)
V= 42.4cm^3 (there are two cylinders though so we will multiply this by 2 in the total volume)

Total volume:
V = 144cm^3 + 42.4cm^3(2)
V = 186.4cm^3

<u>Surface Area</u>

Rectangular prism:
A = 2[w(l) + h(l) + h(w)]
A = 2[6cm(8cm) + 3cm(8cm) + 3cm(6cm)]
A = 180cm^2
But there are two sides that are covered by the semi-circular prisms, so we will have to calculate those sides and remove them.
A = l x w
A = 6cm x 3cm
A = 18cm^2(2) (2 being the two faces)
A = 36cm^2

A = 180cm^2 - 36cm^2
A = 144cm^2 (the area of the rectangle)

Semi-circular prism:
A = 2\pirh + 2\pir^2
Earlier, we found out that the radius of the circle is 3cm, so we will plug that in.
A = 2(3.14)(3cm)(3cm) + 2(3.14)(3cm)^2
A = 113.09cm^2

Total surface area:
A = 144cm^2 + 133.09cm^2
A = 277.09cm^2

Therefore the total volume of the prism is 186.4cm^3 and the total surface area is 277.09cm^2.





6 0
2 years ago
1.27 as a simplest form
jasenka [17]

Answer:

its already simplest form, if you mean fractions, then the answer is 1 27/100

Step-by-step explanation:

6 0
3 years ago
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