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allochka39001 [22]
3 years ago
5

Simplify sin x / CSC x + cos x / sec x​

Mathematics
1 answer:
Artyom0805 [142]3 years ago
8 0
  • sinx/cscx =sinx x sinx =sin^2x
  • cosx/secx=cosx x cosx=cos^2x
  • sin^2x+cos^2x=1 "trigonometric identity"
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Which of the following question would use the calulation 7 x 1/8
Damm [24]

Answer: The answer is D: a pizza is cut into 8 slices Beth eats 7 of them. what fraction of the pizza did Beth eat.

Step-by-step explanation:

If there are 8 slices and 7 of them have been eaten, that means 7/8 have been consumed.

5 0
2 years ago
What is the area of ABC below? If necessary, round your answer to two decimal places.
irina [24]
Our goal is to find the area
area=1/2 times base times height
we know the height is 7.9 but what is the base?


use the pythagorean theorem twice
alrighty
so
remember for legs length a and b and hytponuse c in a right triangle
a²+b²=c²

we need AD and DC

so
AD²+7.9²=9.4²
AD=√25.95

DC²+7.9²=23.2²
DC=√475.83

so
AD+DC=base=(√25.95)+(√475.83)
area=1/2bh
area=1/2((√25.95)+(√475.83))(7.9)
area≈106.28518654591426812803776879893
round to 2 decimal places
area≈106.29 square units
6 0
2 years ago
5. How many solutions does this system of equations have?
Diano4ka-milaya [45]

Answer:

\text{\boxed{\sf{D. \ No\  solution}}}

Step-by-step explanation:

Isolate the term of x and y from one side of the equation.

<h3>y=-4x-9 and y=-4x-1</h3>

First, you have to substitute of y=-4x-1.

\Longrightarrow: \sf{[-4x-1=-4x-9]}

<u>Add by 4x from both sides.</u>

\Longrightarrow: \sf{-4x-1+4x=-4x-9+4x}

<u>Solve.</u>

\Rightarrow:\sf{-1=-9}\\\\\Rightarrow: \sf{(-9)-(-1)=-9+1=-8}\\\\\Rightarrow: \sf{8=0}

  • <u>Therefore, the correct answer is "D. No solution".</u>

I hope this helps. Let me know if you have any questions.

8 0
2 years ago
Find the approximate circumference of a circle with a diameter of 100 yards.
elixir [45]

Answer:

D. 314 yds

Step-by-step explanation:

Given:

Diameter = 100 yds

Required;

Circumference of the circle

Solution:

Circumference of circle = πd

Plug in the value

Circumference = π × 100

= 314 yds (nearest whole number)

5 0
3 years ago
Adi used algebra tiles to represent the product (negative 2 x minus 1)(2 x minus 1).
Paha777 [63]

Answer:

She did not represent the two original factors correctly on the headers.

Step-by-step explanation:

Adi algebra tiles representation is shown in the figure attached.

She made a mistake when she represented -2x-1 with two negative tiles in the top header , so, the representation in the header is not correct.

5 0
3 years ago
Read 2 more answers
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