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Gemiola [76]
3 years ago
6

Ettiene solved a quadratic equation. His work is shown below.

Mathematics
1 answer:
kumpel [21]3 years ago
5 0

Answer:

Ettienes error was in step 2 .

Step-by-step explanation:

Khan academy

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A ver y Strong wind is Blowing over a big lake. A flock of geese begins their 5(10)3 meter journey home over the lake. For every
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<span>The geese are required to make a 5000 meter journey. For every 500 meters they travel forward they are blown back 50 meters. Therefore rather than traveling forward 500 meters, they travel forward only 450 meters. Presumably this happens during the whole course of each section of the flight, so when they travel fractions of the distance they are blown back in the same proportion. Since each 450 meter gain requires 3 minutes, and it will take 11.11111 450 meter sections of flight, it will take 33.333333 minutes. Since they leave at 11:30, they will arrive at 12:03 and roughly twenty seconds.</span>
7 0
3 years ago
The function f(x) = 5One-fifth is reflected over the y-axis. Which equations represent the reflected function? Select two option
postnew [5]

Answer:

The equations that represent the reflected function are

f(x)=5(\frac{1}{5})^{-x}

f(x)=5(5)^{x}

Step-by-step explanation:

The correct question in the attached figure

we have the function

f(x)=5(\frac{1}{5})^{x}

we know that

A reflection across the y-axis interchanges positive x-values with negative x-values, swapping x and −x.

therefore

f(−x) = f(x).

The reflection of the given function across the y-axis will be equal to

(Remember interchanges positive x-values with negative  x-values)

f(x)=5(\frac{1}{5})^{-x}

An equivalent form will be

f(x)=5(\frac{1}{5})^{(-1)(x)}=5[(\frac{1}{5})^{-1})]^{x}=5(5)^{x}

therefore

The equations that represent the reflected function are

f(x)=5(\frac{1}{5})^{-x}

f(x)=5(5)^{x}

9 0
2 years ago
Read 2 more answers
6. What is the result of multiplying the digit in the hundredths place by
Setler [38]

Answer:

B.9

Step-by-step explanation:

9*1=9

6 0
2 years ago
What is the first step to solve this equation?<br> 4x +1 = 2x – 5
eimsori [14]
I think it’s subtract 2x from both sides
8 0
3 years ago
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Alessia uses her bank card to buy lunch 3 times. Each time she buys lunch, it costs $12.50. She then deposits $30 in her bank ac
igomit [66]

Answer: She has a $-7.50 balance

Step-by-step explanation: A = 3*12.5

                                             A= 37.5

                                             37.5-30= -7.5

6 0
3 years ago
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