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2 years ago

Use the function below to find F(4). F(x) = 3* ОА. 7 Ов. 27

Mathematics

1 answer:

Juli2301 [7.4K]2 years ago

6 0

The answer would be 27. When you replace x with 4 you get 3^4 which is 27

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Please can I have an explanation also, I am terrible at these kinds of questions!

wlad13 [49]

Answer:

The fraction of the beads that are red is

Step-by-step explanation:

Algebraic Expressions

A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:

r:y = 2:3

y:b = 5:4

We are required to find r:s, where s is the total of beads in the bag, or

s = r + y + b

Thus, we need to calculate:

$\displaystyle \frac{r}{r+y+b} \qquad\qquad [1]$

Knowing that:

$\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2]$

$\displaystyle \frac{y}{b}=\frac{5}{4}$

Multiplying the equations above:

$\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}$

Simplifying:

$\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3]$

Dividing [1] by r:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}$

Substituting from [2] and [3]:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}$

Operating:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}$

The fraction of the beads that are red is $\mathbf{\frac{10}{37}}$

8 0

2 years ago

HELP ASAP A.11cm B.8 cm C. 22 cm D.2 cm

Westkost [7]

Answer C cause I remember

5 0

2 years ago

There were 55 questions on your chemistry exam , your score was a 94.5 %. how many questions did

pav-90 [236]

Answer:

You got about 52 (~51.975) questions right on your chemistry exam

You got a 93.1% on your biology exam

Step-by-step explanation:

55 multiplied by 0.945 gives you about 52

And for the second part just divide 54/58 to get the percentage

6 0

2 years ago

How do you write 7 a mixed number in the simplest form

Aleonysh [2.5K]

What does this even mean?

7 0

2 years ago

Kate paid $27 for a dress that was on sale for 10% off. What was the original price of this dress?

Luba_88 [7]

The best way to go about this questions is to write out a formula in which x represents the original price of the dress: x*0.90=27. To see where the 0.90 came from, if Kate's dress was 10% off, she must have paid 90% of the original price (100%-10%=90%). Then, to convert a percentage to a decimal, move the decimal point twice to the left so 90% becomes 0.90. Then, our formula essentially means that 90% of some number (x) is equal to 27. To solve for x, divide both sides of the formula by 0.90 to get x=$30 which is the final answer.

I hope this helps.

8 0

2 years ago

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