All categories

3 years ago

Help me pls asap and i’ll give brainliest !! :(

Mathematics

1 answer:

san4es73 [151]3 years ago

6 0

Answer:

Step-by-step explanation 3

You might be interested in

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

erastova [34]

Answer:

C) {6+√43, 6-√43}

Step-by-step explanation:

Applying,

x = [-b±√(b²-4ac)]/2a.................... Equation 1

From the question,

Given: a = 1, b = -12, c = 7

Substitute these values into equation 1

x = [-(-12)±√(-12²+4×1×7)]/2×1

x = [12±√(144+28)]/2

x = [12±√172]/2

either,

x = (12-√172)/2

x = (12-2√43)2

x = (6+√43)

x = (12+√172)/2

x = (12+2√43)/2

x = (6+√43)

Hence,

The right answer is C). {6+√43, 6-√43}

8 0

3 years ago

Determine which values of p the following integrals converge. Give your answer in each case by selecting the appropriate inequal

sashaice [31]

Answer:

Step-by-step explanation:

$\int\limits^2_1 {\frac{1}{x(lnx)^p} } \, dx$

this can be done by substitute lnx = u

dx/x = du

When x =1, u =0 and when x =2, u = ln 2

So integral = $\int\limits^{ln2} _0 {du/u^p} \\\=\frac{u^{-p+1} }{-p+1}$

We find that this integral value is not definid for p =1

Hence for values of p other than 1, this converges.

When we substitute limits

$\frac{1}{1-p} ((ln2)^{1-p} -1)$

and converges for p ≠1

b) $\int\limits^1_0 {lnx}/x^p \, dx \\\int \frac{\ln \left(x\right)}{x^p}dx=\frac{1}{-p+1}x^{-p+1}\ln \left(x\right)-\frac{x^{-p+1}}{\left(-p+1\right)^2}+C$

So not converging for p =1

But ln x is defined only for x >0

So integral 0 to 1 makes this integral not valid and hence not convergent.

7 0

4 years ago

The path of water from a hose on a fire tugboat can be approximated by the equation y=-0.0055x^2 +1.15x + 5, where y is the heig

Komok [63]

Answer:

The water is 208.22ft from the tug boat

Step-by-step explanation:

The governing equation is $y=-0.0055x^2 +1.15x + 5$

y is the height above the ocean

x is the distance from the tugboat

if y= 6ft, the equation will now become

$6=-0.0055x^2 +1.15x + 5$

we can arrange this properly to form a quadratic equation by grouping like terms.

$-0.0055x^2 +1.15x -1=0$

solving quadratically we have two values of x as 208.22ft and 0.873 ft.

We can take a more realistic value as a solution to our problems:

208.22ft

6 0

4 years ago

How can I Simplify 13⁰ this

Brut [27]

The answer is 1. Please mark brainelist

4 0

3 years ago

Read 2 more answers

PLS HELP BEST ANSWER=BRAINLIEST

8_murik_8 [283]

Answer:

a-2=a-2

Step-by-step explanation:

Here it is, you just have to notice that the numerator has common factors alternated. You will then collect the same parentheses and simplify with the denominator.

5 0

3 years ago

Read 2 more answers