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3 years ago

Given the function y = -2ex , find y if x = 3.

Mathematics

1 answer:

Solnce55 [7]3 years ago

5 0

Answer:

Assuming function is $y=-2*e*x$ : y(3)= -16.31.

Assuming function is $e^x$ $y=-2*e^x$ : y(3)= -40.17

Step-by-step explanation:

These should both be simple enough to do with a calculator or simply googling, but if you must do it by hand, an easy trick to remember is that e is approximately equal to 2.718 so substitute that value wherever you see e. Then, just substitute 3 in for x and simply multiply.

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The wildflowers at a national park have been decreasing in numbers. There were 1200 wildflowers in the first year that the park

bonufazy [111]

Year New flowers

1 1200

2 300

3 75

There were 1200 wildflowers in the first year that the park started tracking them. Since then, there have been one fourth as many new flowers each year

Initially there are 1200 flowers and start decreasing by $\frac{1}{4}$

So first term is 1200 and common ratio is $\frac{1}{4}$ .

Its a geometric sequence so summation becomes

i =1∑ ∞ 1200( $\frac{1}{4})^{i-1}$

Now we find the sum

We use sum formula

$Sum = \frac{a}{1-r}$

Where a is the first term , a= 1200

r is the common ratio , r= 1/4

$Sum = \frac{1200}{1-(\frac{1}{4})}$

$Sum = \frac{1200}{\frac{3}{4}}$

Sum = 1600 wildflowers

4 0

3 years ago

6-8x=7x-10x-24 solve for x

lana66690 [7]

Answer:

x = 6

Step-by-step explanation:

Let's solve your equation step-by-step.

6−8x=7x−10x−24

Step 1: Simplify both sides of the equation.

6−8x=7x−10x−24

6+−8x=7x+−10x+−24

−8x+6=(7x+−10x)+(−24)(Combine Like Terms)

−8x+6=−3x+−24

−8x+6=−3x−24

Step 2: Add 3x to both sides.

−8x+6+3x=−3x−24+3x

−5x+6=−24

Step 3: Subtract 6 from both sides.

−5x+6−6=−24−6

−5x=−30

Step 4: Divide both sides by -5.

−5x/-5 = -30 /-5

x=6

4 0

2 years ago

Death Valley in California is approximately 250 feet below sea level. Which of the following best describes the location of Deat

forsale [732]

+250 I am happy to help you

8 0

2 years ago

Read 2 more answers

The sum of two numbers is -25. One number is 101 less than the other. Find the numbers

zlopas [31]

Answer:

-63, 38

Step-by-step explanation:

1st number = x

2nd number = x+101

x+x+101=-25

2x=-126

x=-63

1st number = x = -63

2nd number = x+101 = 38

6 0

2 years ago

Read 2 more answers

the formula for glue says to add 60 ml of hardener to each container of resin. How much hardener should be added to 15 container

Aleonysh [2.5K]

Answer:

0.9 L of hardener

Step-by-step explanation:

Find the total mL then convert into L

60*15=900

900mL=0.9

5 0

3 years ago