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2 years ago

Can u help with this plzz

Mathematics

1 answer:

Rama09 [41]2 years ago

8 0

Answer:

Umm, it's just a black screen

Step-by-step explanation:

My only answer is that you turn a light on or something.Where's the question?

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What percent of 45 is 18

alexira [117]

4% of 45 equals 18.

3 0

3 years ago

Read 2 more answers

Amelia drives 10 miles in 20 minutes. If she drove three hours in total at the same rate, how far did she go? subquestion - how

olga nikolaevna [1]

Answer:

Amelia drove 90 miles in 3 hours.

Step-by-step explanation:

she drove 10 miles in 20 minutes

we multiply this by 3, and get

30 miles in an hour ( 60 minutes)

then we multiply this by 3 and get

90 miles in 4 hours (180 minutes) :)

5 0

3 years ago

The price of an item has dropped to 77$ today. Yersterday it was 140$. Find the percentage decrease.

Yuki888 [10]

Answer: It dropped 55%

Step-by-step explanation: well if you multiply 140x.55 it equals to 77

5 0

2 years ago

The cost price was $10000 she made a down payment of 2500 and agreed to pay the balance in 24 monthly installments of $350 how m

Airida [17]

Answer:

in total she spent 10900

Step-by-step explanation:

We know she made a down payment of 2500 dollars and she agreed to pay the balance in 24 monthly installments of 350 dollars. Thus we can do simple multiplying of 24 x 350 which gives us 8400. We also need to add in her down payment which is 2500 so in total we got 10900

5 0

2 years ago

What is the inverse of f(x)=e^x

enot [183]

Answer:

$f^{-1}(x)=\ln{x}$

Step-by-step explanation:

An <em>inverse</em> function is any function that "undoes" another function. If we think of the function $f$ as some kind of machine that takes in a number $x$ as input and produces a number $f(x)$ as an output, when we give inverse function $f^{-1}$ the number $f(x)$ as in input, we get $x$ , our original input, as the output $f^{-1}(x)$

We need a function that undoes $f(x)=e^x$ , and the natural choice for undoing an exponent is with a logarithm. Here, our base is $e$ , so we'll choose $\log_e{x}=\ln{x}$ as our inverse function. Let's see how that works:

$f^{-1}(f(x))=\ln{e^x}$

$\ln{e^x}$ is the power we have to raise $e$ to to get $e^x$ , which is $x$ , so

$f^{-1}(f(x))=\ln{e^x}=x$

And we have our function.

8 0

3 years ago