3 years ago

Help please !!! will give brainliest

Mathematics

1 answer:

vodka [1.7K]3 years ago

6 0

Answer:

x=-1

Step-by-step explanation:

(15-6+12+x ) / 4 = 5

20 = 27-6+x

20=21+x

x=-1

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Solve 2x^3+ x^2- 13x + 6, given that one of its factors is (x - 2) with an area model

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Answer:

Step-by-step explanation

(x-2)(x+3)(2x-1)

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3 years ago

Larry the librarian and Courtney the lawyer are having a debate. Larry contends that the library is bigger than the courthouse i

professor190 [17]

Answer:

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Larry is correct.

Step-by-step explanation:

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3 years ago

Given the function f(x)=4x^8+7x^7+1x^6+1 What is the value of f(−2)?

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3 years ago

Prove that

Dovator [93]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identities

secx = $\frac{1}{cosx}$ , cosecx = $\frac{1}{sinx}$

cotx = $\frac{cosx}{sinx}$ , tanx = $\frac{sinx}{cosx}$

Consider the left side

secA cosecA - cotA

= $\frac{1}{cosA}$ × $\frac{1}{sinA}$ - $\frac{cosA}{sinA}$

= $\frac{1}{cosAsinA}$ - $\frac{cosA}{sinA}$

= $\frac{1-cos^2A}{cosAsinA}$

= $\frac{sin^2A}{cosAsinA}$ ( cancel sinA on numerator/ denominator )

= $\frac{sinA}{cosA}$

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3 years ago

A skateboarder starting from rest accelerates down a ramp at 2 m/s for 2 s. What is the final speed of the skateboarder

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$\therefore$ Final speed of the skateboard(v) = 4 m/s

7 0

3 years ago