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3 years ago

11

To prepare for a bake-off, Travis used 630 grams of flour each day for 3 weeks. How many kilograms did Travis use in those 3 wee

ks?

1 answer:

Diano4ka-milaya [45]3 years ago

6 0

Answer:

hahahahhahahahahahahahahq

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Easy - Math - INVERSES - NEED ASAP PLEASE AND THANK YOU VERY MUCH!

polet [3.4K]

Answer:

Part 1) No

Part 2) Option 4. $f^{-1}(x)=-\frac{1}{3}x+3$

part 3) $f^{-1}(9)=4$

Step-by-step explanation:

Part 1) we have

$f(x)=8x-3$

$g(x)=(x+8)/3$

Find the inverse of f(x) and then compare with g(x)

Let

y=f(x)

$y=8x-3$

Exchange the variables x for y and y for x

$x=8y-3$

Isolate the variable y

$8y=(x+3)$

$y=(x+3)/8$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=(x+3)/8$

therefore

the functions f(x) and g(x) are not inverses of each other

Part 2) we have

$f(x)=-3x+9$

Let

y=f(x)

$y=-3x+9$

Exchange the variables x for y and y for x

$x=-3y+9$

Isolate the variable y

$3y=-x+9$

$y=(-x+9)/3$

Let

$f^{-1}(x)=y$

$f^{-1}(x)=(-x+9)/3$

$f^{-1}(x)=-\frac{1}{3}x+3$

Part 3) we know that

For $x=4$ , $f(x)=9$

so

For $x=9$ , $f^{-1}(9)=4$

5 0

4 years ago

Calculating conditional probability

laila [671]

Complete Question

Calculating conditional probability

The usher at a wedding asked each of the 80 guests whether they were a friend of the bride or of the groom.

Here are the results:

Bride :29

Groom :30

BOTH : 20

Given that a randomly selected guest is a friend of the groom, find the probability they are a friend of the bride.

P (bride | groom)

Answer:

The probability is $P(B|G) = \frac{2}{3}$

Step-by-step explanation:

The sample size is $n = 80$

The friend of the groom are $G = 30$

The friend of the groom are $B = 29$

The friend of both bride and groom are $Z = 20$

The probability that a guest is a friend of the bride is mathematically represented as

$P(B) = \frac{29}{80}$

The probability that a guest is a friend of the groom is mathematically represented as

$P(G) = \frac{30}{80}$

The probability that a guest is both a friend of the bride and a friend of the groom is mathematically represented as

$P(B \ n \ G) = \frac{20}{80}$

Now

$P(B|G)$ is mathematically represented as

$P(B|G) = \frac{P(B \ n \ G)}{P(G)}$

Substituting values

$P(B|G) = \frac{\frac{20}{80} }{\frac{30}{80} }$

$P(B|G) = \frac{2}{3}$

6 0

3 years ago

Priya has completed 9 eczema questions.THis is 60% of the questions on the exam? how many questions are on the exam?

qwelly [4]

Answer:

15 questions

Step-by-step explanation:

9x100=900

900/60=15

9/15=60%

plz mark me as brainliest.

7 0

3 years ago

Please help ! As soon as possible!

Eduardwww [97]

The answer is $11.25 because 110-8.75÷9

7 0

3 years ago

Read 2 more answers

Convert: 600 miles per hour to km per hour.

sashaice [31]

Answer:

<u>The correct answer is that 600 miles per hour are equivalent to 965.4 kilometers per hour</u>

Step-by-step explanation:

1. Let's check the information given to resolve the question:

Convert 600 miles per hour to kilometers per hour

2. Let's proceed with the conversion:

1 mile per hour = 1.609 kilometers per hour

then:

600 miles per hour = 600 * 1.609 kilometers per hour

600 miles per hour = 965.4 kilometers per hour

<u>The correct answer is that 600 miles per hour are equivalent to 965.4 kilometers per hour</u>

8 0

3 years ago