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Nataly_w [17]
2 years ago
13

A 3-inch candle burns down in 4 hours. If b represents how much of the candle, in inches, has burned away at any time given in h

ours, t, write a proportional equation for b in terms of t that matches the context
Mathematics
1 answer:
Rus_ich [418]2 years ago
4 0

use this equation:

b+t+3+4

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Which of the following options correctly represents the complete factored form of the polynomial F(x)=x^4-3x^2-4?
Bumek [7]

Answer:

D

Step-by-step explanation:

Let's substitute a for x²:

x^4 - 3x² - 4

a² - 3a - 4

Now, this looks like something that is much more factorisable:

a² - 3a - 4 = (a - 4)(a + 1)

Plug x² back in for a:

(a - 4)(a + 1)

(x² - 4)(x² + 1)

The first one is a difference of squares, which can be factored into:

x² - 4 = (x + 2)(x - 2)

The second one can also be treated as a difference of squares:

x² + 1 = x² - (-1) = (x + √-1)(x - √-1) = (x + i)(x - i)

The answer is (x + 2)(x - 2)(x + i)(x - i), or D.

6 0
3 years ago
Read 2 more answers
Kristen reads 11 pages per hour. In all, how many hours of reading will Kristen have to do
soldier1979 [14.2K]

Answer:

4

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just don’t want to waste my time in case you don’t want me to :)

6 0
3 years ago
The output is one-fifth of the input
Sindrei [870]

Y=X/5

Step-by-step explanation:

Step 1:

Let X be the input and Y be the output variable

Given: the output is one-fifth of the input

Step 2:

Y=X/5 be the require function

Eq:

for X=1, Y = 1/5

    X=2, Y=2/5, etc

8 0
3 years ago
Lisa and Bart spin this spinner 60 times the result are below/ black=17 blue=15 orange=21 purple=7 a. What is the experimental p
asambeis [7]

\text{Answer: a) }P(\text{ getting an orange )}=\frac{7}{20}

b) Blue color had an experimental probability that matched its theoretical probability.

Explanation:

Since we have given that

Number of times this spinner is spinned = 60

Number of times black occur = 17

Number of times blue occur = 15

Number of times orange occur = 21

Number of times purple occur = 7

a) So, Experimental probability of a spin of orange is given by

P(\text{ getting an orange }=\frac{\text{ Number of times orange occur}}{\text{total number of times the spinner spins}}\\\\P(\text{ getting an orange})}=\frac{21}{60}=\frac{7}{20}

b) which color had an experimental probability that matched its theoretical probability.

According to theoretical probability ,

Every event must have equal probability, i.e. \frac{1}{4}

And,

P(\text{ getting blue color)}=\frac{15}{60}=\frac{1}{4}

So, Blue color had an experimental probability that matched its theoretical probability.





7 0
3 years ago
Read 2 more answers
Guys please, please help!!<br><br> 1. What is the domain and range?
Vilka [71]

Answer:

<h2>Domain is a ser of possible input values</h2>

<h3>Range:is a set of Y coordinates</h3>
7 0
3 years ago
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