MATHEMATICS COLLEGE

Kayla had 40 minutes left beforebedtime. Then she worked on a
painting for 20 minutes, took a shower
for 8 minutes, and read a book for 10
minutes. How many more minutes are
left before Kayla's bedtime?

Answers

Answer 1
Answer:

Answer:

2 minutes are left

Step-by-step explanation:

1. Start with 40

2. Subtract 20 from 40 (40-20) to get 20 minutes.

3. Then take 8 minutes from 20 (20-8) to get 12 minutes

4. Lastly, take 10 minutes away from 12 (12-10) to get 2 minutes left.

5. This leaves Kayla with 2 minutes before bedtime.

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Consider the polygon shown. Determine the value of y. PLEASE HELP​

HELP!!! find the value of x

Answers

Answer:

don't know

.....................

Answer:

x = 12

Step-by-step explanation:

Consider three orthogonal triangles (see picture)

1. The smallest triangle

2. The medium triangle

3. The big triangle that holds both triangles.

All are orthogonal (or right triangles) so you can use Pythagoras Theorem:

"The area of the square whose side is the hypotenuse is equal to the sum of the areas of the squares on the other two sides"

Use Pythagoras theorem on triangle 1.

a^(2) = 3^(2) + 6^(2) = 45

Now user Pythagoras on triangle 2.

b^(2) = x^(2) + 6^(2) = x^(2) + 36

Now use Pythagoras on triangle 3 (the big triangle).

(3 + x )^(2) = a^(2) + b^(2)\nx^(2) + 6x + 9 = a^(2) + b^(2)

Now replace the values for a^(2) and b^(2) from the two equations derived from triangle 1 and 2:

x^(2) + 6x + 9 = 45 + x^(2) + 36

The two x^(2) get cancelled out, so:

6x + 9 = 45 + 36\nx = 12

TA DA!

Find the domain of f and f −1 and its domain. f(x) = ln(ex − 3). (a) Find the domain of f. (Enter your answer using interval notation.) (−2,[infinity]) (b) Find f −1. f −1(x) = x+ln(3)

Answers

Answer:

a.Domain of f=(1.099,\infty)

b.f^(-1)(x)=ln(e^x+3)

Step-by-step explanation:

Let y=f(x)=ln(e^x-3)

We know that domain of ln x is greater than zero

e^x-3>0

Adding 3 on both sides of inequality

e^x-3+3>0+3

e^x>3

Taking on both sides of inequality

lne^x>ln 3

x>ln 3=1.099

By using lne^x=x

Domain of f=(1.099,\infty)

Let y=f^(-1)(x)=ln(e^x-3)

e^y=e^x-3

By using property lnx=y\implies x=e^y

e^x=e^y+3

Taking ln on both sides of equality '

lne^x=ln(e^y+3)

x=ln(e^y+3)

Replace x by y and y by x

y=ln(e^x+3)

Substitute y=f^(-1)(x)

f^(-1)(x)=ln(e^x+3)

16 1/9+ -4 2/3 help please??

Answers

Answer:

11 4/9

Step-by-step explanation:

ANDDD the answer is

Using the expression you found in part a, how many minutes will it take to make and pack an order for 15 parts?

Answers

Answer:

It will take 40 minutes to make and pack an order for 15 parts.

Step-by-step explanation:

That's the answer.

Answer:

It will take 40 minutes to make and pack an order for 15 parts.

Step-by-step explanation:

I’ll give out Brainly-ist to the correct one Use your calculator to estimate the value of
log740.

Click on the correct answer.
1.519
1.896
1.354

Answers

Answer:

  1.896

Step-by-step explanation:

You can answer this just using your number sense.

  \log_7{(40)}\approx 1.896

You know that 49 = 7², so log₇(49) = 2. The log function has a fairly small slope, so log₇(40) will not be far from 2.

_____

If you want to use your calculator, you can use the "change of base formula".

  log₇(49) = log(49)/log(7) ≈ 1.602060/0.845098 ≈ 1.896

g Which of the following is true about a p-value? Group of answer choices It measures the probability that the null hypothesis is true. It measures the probability of observing your test statistic, assuming the null hypothesis is true. It measures the probability of observing your test statistic, assuming the alternative hypothesis is true. It measures the probability that the alternative hypothesis is true.

Answers

Answer:

It measures the probability of observing your test statistic, assuming the null hypothesis is true.

Step-by-step explanation:

The p-value, also known as the probability value measures the probability of observing your test statistic, assuming the null hypothesis is true.

A low p-value means a higher chance of the null hypothesis to be true.

It lies between 0 and 1. A small p-value indicates fewer chances of the null hypothesis to be true.
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