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3 years ago

Easy problems I'm having trouble remembering how to do!

Mathematics

1 answer:

beks73 [17]3 years ago

7 0

<h2>Answer:</h2>

1. - 2°C + 4°C

= 2°C.

2. 3/4 × 4

= 3pounds.

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Find the linear approximation of f(x)=lnx at x=1 and use it to estimate ln(1.38).

RideAnS [48]

$\bf f(x)=y=ln(x)\qquad 
\begin{cases}
x=1\\
y=ln(1)\to y=0
\end{cases}\\\\
-----------------------------\\\\
\left. \cfrac{dy}{dx}=\cfrac{1}{x} \right|_{x=1}\implies 1\impliedby m
\\\\\\
\textit{now, we know that }
\begin{cases}
x=1\\
y=0\\
m=1
\end{cases}\implies y-0=1(x-1)\implies y=x-1$

now, you're asked to use it when ln(1.38), which is just another way of saying x = 1.38

so set x = 1.38 and see what "y" is

5 0

3 years ago

leontyne sings for $1,000 an hour. Her rate increases by 50 percent after midnight. If she sings one night from 8:30 pm until 1:

iren2701 [21]

From 8.30 pm to 12 : 00

Difference = 12 : 00 - 08:30 = 3 : 30

3 hours 30 minutes = 3.5 hours.

Total for those hours = 3.5 * 1000 = $3500

From 12:00 to 1:00 am = 1 hour.

50% increase = 50% of 1000 = .50 * 1000 = 500

So it will increase to 1000 + 500 = $1500 per hour.

For the 1 hour extra, 1 * 1500 = $1500

Total = $3500 + $1500 = $5000

She will be paid $5000

4 0

4 years ago

NEEEEDD HEEELLLPPPP

rusak2 [61]

Option 2: $\frac{x-12}{4}$ is the correct answer

Step-by-step explanation:

Given fraction is:

$\frac{2x-24}{8}$

In order to simplify, we can see that the function is already in compact form

So,

We can simplify the given fraction.

We can see that the numerator can be further simplified

$\frac{2(x-12)}{8}\\=\frac{x-12}{4}$

Hence,

Option 2: $\frac{x-12}{4}$ is the correct answer

Keywords: Polynomials, expressions

Learn more about polynomials at:

#LearnwithBrainly

8 0

4 years ago

A rectangular shelf with an area equal to x^2-16x+60 square units could have which possible dimensions for length and width

kenny6666 [7]

Answer:

Step-by-step explanation:

x²-16x+60

=x²-6x-10x+60

=x(x-6)-10(x-6)

=(x-6)(x-10)

so dimensions are x-6 and x-10.

8 0

3 years ago

Determine whether each relation is a function.

Vitek1552 [10]

1- not a function; 3 in the domain is repeated
2- a function
3- a function
4- a function

3 0

3 years ago