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3 years ago

Help asap please !!!

Mathematics

2 answers:

taurus [48]3 years ago

8 0

I’m not sure, but I kinda have a feeling is b or d. Good luck!

Igoryamba3 years ago

5 0

Answer:

ROTATION

Step-by-step explanation:

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Solve for x rounding to the nearest hundredth will give to brainlest!!!

Verizon [17]

Answer:

Exact Form:

64/21e

Decimal Form:

1.12115639

Step-by-step explanation:

8 0

2 years ago

When we reject the null hypothesis, we would expect the variance ratio, over the long run, to be:_________

FinnZ [79.3K]

Answer:

Cuando rechazamos la hipótesis nula, esperaríamos que la razón de varianza, a largo plazo, sea: mayor al valor crítico.

Step-by-step explanation:

5 0

3 years ago

A population of insects, in thousands, can be molded using the function (t)= 1.75(0.97)x

Dominik [7]

Question:

A population of insects, in thousands, can be modeled using the function

$p(t) = 1.75(0.97)^t$ , where t is time in months. Which statement best

describes the population of insects?

A. The population is decaying at a rate of 3% each month.

B. The population is decaying at a rate of 25% each month.

C. The population is growing at a rate of 75% each month.

D. The population is growing at a rate of 97% each month.

Answer:

A. The population is decaying at a rate of 3% each month.

Step-by-step explanation:

Given

$p(t) = 1.75(0.97)^t$

Required

True statement about the function

From the options, we can see that we are to answer the question on the basis of decay and growing rates.

An exponential form is:

$y=ab^x$

Compare to $p(t) = 1.75(0.97)^t$

$b= 0.97\\$

If $b > 1$ , then $b = 1 + r$ r represents growth rate

else, $b= 1-r$ r represents decay rate

Since b < 0.97:

$0.97= 1-r$

$r = 1 - 0.97$

$r = 0.03$

$r = 3\%$

$r = 0.03$

7 0

3 years ago

Hi please help me with this i’ll give brainliest if you give a correct and show your work!

Tatiana [17]

1. (1.35)x(.42)

1.35
x. .42
________
270
5400
________
.5670

You need to have the total number of decimal places from the original two numbers. 1.35 has two decimal places and .42 has to decimal places you have a total of four decimal places, Which means 5670 is .5670

2. (.22)x(.04)

.22
x. .04
_______
88
00
_______
.0088

you need to have the total number of decimal places from the original Two numbers. So .22 is two decimal places and .04 is two decimal places, so you will need to have for decimal places. That means that the answer 88 needs to be translated into .0088

6 0

3 years ago

2x^2+3x-2, a=0 How do I find the derivative?

Ghella [55]

You can use the definition:

$\displaystyle f'(x) = \lim_{h\to0}\frac{f(x+h)-f(x)}h$

Then if

$f(x) = 2x^2+3x-2$

we have

$f(x+h) = 2(x+h)^2+3(x+h) - 2 = 2x^2 + 4xh+2h^2+3x+3h-2$

Then the derivative is

$\displaystyle f'(x) = \lim_{h\to0}\frac{(2x^2+4xh+2h^2+3x+3h-2)-(2x^2+3x-2)}h \\\\ f'(x) = \lim_{h\to0}\frac{4xh+2h^2+3h}h \\\\ f'(x) = \lim_{h\to0}(4x+2h+3) = \boxed{4x+3}$

I'm guessing the second part of the question asks you to find the tangent line to f(x) at the point a = 0. The slope of the tangent line to this point is

$f'(0) = 4(0) + 3 = 3$

and when a = 0, we have f(a) = f (0) = -2, so the graph of f(x) passes through the point (0, -2).

Use the point-slope formula to get the equation of the tangent line:

y - (-2) = 3 (x - 0)

y + 2 = 3x

y = 3x - 2

5 0

3 years ago