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2 years ago

WILL GIVE BRAINELIST WHOEVER ANSWER FIRST

Mathematics

2 answers:

Nataliya [291]2 years ago

8 0

Answer:

It is 5, I just did the test on Ed

Leokris [45]2 years ago

4 0

Answer:

Step-by-step explanation:

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Suppose that the population of a country can be modeled by the exponential equation P(t) = 3.6e^0.078t where P(t) gives the popu

bulgar [2K]

Answer:. d) 0.415

Step-by-step explanation:

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2 years ago

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The amount of snowfall falling in a certain mountain range is normally distributed with a mean of 105 ' and a standard deviation

Ksenya-84 [330]

The sample mean is μ=105, and sample standard deviation is σₓ= $\frac{σ}{\sqrt{n}} =\frac{10}{\sqrt{25}} =2$ .

The Z-score is $Z=\frac{ 107.8-105}{2}=1.4$ .

Refer to standard normal distribution table.

The required probability is

$P(X>107.8)=P(Z>1.4)=1-P(Z$

7 0

2 years ago

Is x^2 + 1/x = 4 a quadratic equations

Liono4ka [1.6K]

Answer:

$\large\boxed{\pink{ \leadsto The \ given \ equation \ is \ not \ a \ Quadratic \ equation . }}$

Step-by-step explanation:

Given equation to us is ,

$\green{\implies x^2+\dfrac{1}{x}=4 }$

So , a equation is said to be a quadratic equation if the highest degree of the variable is 2 . On simplifying the Equation ,

$\implies x^2 +\dfrac{1}{x}=4$

Taking x as LCM ,

$\implies \dfrac{x^2.x + 1 }{x}= 4$

Transposing x to RHS .

$\implies x^3 + 1 = 4x$

Putting all terms in LHS

$\boxed{\bf \implies x^3 - 4x - 1 = 0 }$

Since here the highest degree of the variable is 3 not 2 . So its a cubic equation and not a quadratic equation .

<h3>Hence the given equation is not a quadratic equation .</h3>

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2 years ago

Subscriptions to a fashion magazine have gone down by a consistent 10% each year. If the magazine currently has 39,000 subscribe

jeyben [28]

Answer:

31590

Step-by-step explanation:

After first year it would be 35100. After second year it would be 31590.

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2 years ago

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You can ride your bike around your block 10 times and the whole neighborhood once in 24 minutes. You can ride you bike around yo

Anna35 [415]

4 minutes

Set up 2 equations and solve

let b represent time taken to ride around block and

let n represent time taken to ride around neighbourhood, then

10b + n = 24 → (1)

5b + 2n = 18 → (2)

multiply (1) by - 2

- 20b - 2n = - 48 → (3)

add (2) and (3) term by term to eliminate n

- 15b = - 30 ( divide both sides by - 15 )

b = 2

substitute b = 2 into (1) and solve for n

20 + n = 24 ( subtract 20 from both sides )

n = 4

Thus it takes 4 minutes to ride around the neighbourhood

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2 years ago

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