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3 years ago

Please help quick will give brainly

Mathematics

2 answers:

skelet666 [1.2K]3 years ago

7 0

Answer:

the answer is C

Step-by-step explanation:

muminat3 years ago

4 0

Answer:

$1134yd^3$

Step-by-step explanation:

Right Triangular Prism

V = LWH

L = 6yd

W = 21yd

H = 9yd

____________________

Follow the volume formula, and multiply the length by width and height together.

V = LWH

V = (6)(21)(9)

V = 1134yd^3

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Adding cheese to a McDonald's Quarter Pounder increases the fat content from 21 g to 30 g. What percent does the fat content inc

solong [7]

Answer: 42.9%

Step-by-step explanation:

The percentage increase of the fat content will be calculated as:

= Fat increase / Previous fat content × 100

= (30 - 21) / 21 × 100.

= 9/21 × 100

= 42.9%

5 0

3 years ago

Finding the area of a right triangle

muminat

Formula: A = ab/2 unless you need a fully answer question?

6 0

3 years ago

What would a solution to the equation 100=(8+2x)(10+2x) mean in this situation

alexandr402 [8]

Step-by-step explanation:

100 = ( 8 + 2x) ( 10 + 2x )

100 = 80 + 36x + 4x ^2 ( binomial product )

80 + 36x + 4x^2 = 100

80 + 36x + 4×^2 - 100 = 100 - 100

4x^2 + 36x - 20 = 0

I am not able to write the next steps but you can use symbolab to find out the answer and for the clear understanding

I am reay sorry

use symbolab app

7 0

3 years ago

X^3-8/x-2<br> simplify and I need an explanation please

Sergeu [11.5K]

Answer: $x^2+2x+4$

Step-by-step explanation:

The expression given in the exercise is:

$\frac{x^3-8}{x-2}$

If you descompose the number 8 into its prime factors, you get that:

$8=2*2*2=2^3$

Therefore, you can rewrite the numerator of the expression as following:

$=\frac{(x^3-2^3)}{(x-2)}$

For this exercise you need to remember that for a Difference of cubes:

$a^3-b^3=(a-b)(a^2+ab+b^2)$

Then, applying this, you get:

$=\frac{(x-2)(x^2+2x+2^2)}{(x-2)}=\frac{(x-2)(x^2+2x+4)}{(x-2)}$

Now, it is necessary to remember the following:

$\frac{a}{a}=1$

Knowing the above, you can say that:

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

Therefore applying this, you get that the simplified expression is:

$=x^2+2x+4$

8 0

3 years ago

Verify the identity. cotangent of x divided by quantity one plus cosecant of x equals quantity cosecant of x minus one divided b

Elenna [48]

Answer:

$\frac{\cot x}{1+\csc x}=\frac{\csc x-1}{\cot x}$

Step-by-step explanation:

We want to verify the identity:

$\frac{\cot x}{1+\csc x}=\frac{\csc x-1}{\cot x}$

Let us take the LHS and simplify to get the LHS.

Express everything in terms of the cosine and sine function.

$\frac{\cot x}{1+\csc x}=\frac{\frac{\cos x}{\sin x} }{1+\frac{1}{\sin x} }$

Collect LCM

$\frac{\cot x}{1+\csc x}=\frac{\frac{\cos x}{\sin x} }{\frac{\sin x+1}{\sin x} }$

We simplify the RHS to get:

$\frac{\cot x}{1+\csc x}=\frac{\cos x}{\sin x+1}$

We rationalize to get:

$\frac{\cot x}{1+\csc x}=\frac{\cos x(\sin x-1)}{(\sin x+1)*(\sin x-1)}$

We expand to get:

$\frac{\cot x}{1+\csc x}=\frac{\cos x(\sin x-1)}{\sin^2 x-1}$

Factor negative one in the denominator:

$\frac{\cot x}{1+\csc x}=\frac{\cos x(\sin x-1)}{-(1-\sin^2 x)}$

Apply the Pythagoras Property to get:

$\frac{\cot x}{1+\csc x}=\frac{\cos x(\sin x-1)}{-\cos^2 x}$

Simplify to get:

$\frac{\cot x}{1+\csc x}=\frac{-(\sin x-1)}{\cos x}$

$\frac{\cot x}{1+\csc x}=\frac{1-\sin x}{\cos x}$

Divide both the numerator and denominator by sin x

$\frac{\cot x}{1+\csc x}=\frac{\frac{1}{\sin x}-\frac{\sin x}{\sin x}}{\frac{\cos x}{\sin x}}$

This finally gives:

$\frac{\cot x}{1+\csc x}=\frac{\csc x-1}{\cot x}$

8 0

3 years ago