Directions: Evaluate each rational expression using the indicated values of the variable.

1. [tex] \frac{5x}{2y} [/tex]
a. when x = 8 and y = 10
b. when x = 1/2 and y = 2/3

2. [tex] \frac{ {ab}^{3} }{c} [/tex]
a. when a = 4, b = 3, and c = 2
b. when a = -2, b= -2, and c = 2
3. [tex] \frac{e \: + \: 5}{4f \: - \: 4} [/tex]
a. when e = 11 and f = 7
b. when e = -1 and f = -4

Pls answer it perfectly, so there will be no reported answers, thank u :)

Answers

Answer 1

Answer:

[tex]1) \: \: \frac{5x}{2y} \\ a) \: \: x = 8 \: \: and \: \: y = 10 \\ \frac{5x}{2y} \\ \frac{5(8)}{2(10)} \\ \frac{40}{20} \\ 2 \: ans \\ b) \: \: \frac{5x}{2y} \\ \frac{5( \frac{1}{2}) }{2( \frac{2}{3}) } \\ \frac{2.5}{1.3} \\ \frac{25}{13} \\ 1.92 \: \: ans \: \\ \\ 2) \: \: \frac{a {b}^{3} }{c} \\ \\ a) \: \: a = 4 \: .\: b = 3 \: . \: c = 2 \\ \\ \frac{a {b}^{3} }{c} \\ \frac{(4) {(3)}^{3} }{2} \\ \frac{4(27)}{2} \\ \frac{108}{2} \\ 54 \: \: ans \: \\ \\ b) \: \: a = - 2 \: . \: b = - 2 \: . \: c = 2 \\ \\ \frac{a {b}^{3} }{c} \\ \frac{( - 2) {( - 2)}^{3} }{2} \\ \frac{ - 2 { (- 2)}^{3} }{2} \\ \frac{ - 2( - 8)}{2} \\ \frac{16}{2} \\ 8 \: \: ans \: [/tex]

Step-by-step explanation:

question 3 is already answered by me in your question..or you can see attachment.

$Directions: Evaluate Each Rational Expression Using The Indicated Values Of The Variable.1. [tex] \frac{5x}{2y}$

Related Questions

find value of each variable and the measure of each label (2x+32) (3x-5)

Answers

Answer:

Step-by-step explanation:

(2x+32) (3x-5)

(2x+3x) (32-5)

(5x*27)

hope this helps

How do I calculate (⅔)³×(4/9)⁴ with powers properties?

Answers

Notice that

4/9 = 2²/3² = (2/3)²

so that

(2/3)³ (4/9)⁴ = (2/3)³ ((2/3)²)⁴

… = (2/3)³ (2/3)⁸

… = (2/3)¹¹

Even more picrews of mine............... THIS IS THE LAST ONE I WILL MAKE K? (not to be mean)

i have a lot of picrew

Answers

Answer:

Honestly you should enter the art show or something in your city/country

Step-by-step explanation:

It is good.

Segment AB measures 3 cm.
How long is the image of AB after a dilation with scale factor 1/5

Answers

Answer:

The answer is 3/5cm

Step-by-step explanation:

To find:

3 x 1/5.

3 x 1/5 = 3/5.

Therefore the answer is 3/5cm

Someone help :(( thank youuuu so much if u do

Answers

Answer:

-10

Step-by-step explanation:

The equation would be -8 - (-10) = 2. When subtracting a negative, you are actually just adding a positive. It's like the two negative signs cancel each other out, so it would look more like -8 + 10 = 2. For the answer box, just put -10.

5/8-(1/4) to the power of 2

Answers

Answer:

[tex]\frac{9}{16}[/tex]

Step-by-step explanation:

[tex]\frac{5}{8}[/tex] - [tex](\frac{1}{4}) ^{2}[/tex]

= [tex]\frac{5}{8}[/tex] - [tex]\frac{1}{16}[/tex]

= [tex]\frac{10}{16}[/tex] - [tex]\frac{1}{16}[/tex]

= [tex]\frac{9}{16}[/tex]

Fill in the blank: 4(3x + ?) = 12x + 16
A) 4, B) 16, C) 12, D) 4x

Answers

Answer:

A) 4

Step-by-step explanation:

4(3x + ?) = 12x + 16

12x + ? = 12x + 16

What times 4 is 16?

So our answer is A) 4

how would you compare the sizes of two balls

Answers

Answer:

You could compare the mass of each ball and volume, You could also find the height of each ball or diamiter. I really hope this isnt satire.

PLS HELP WILL MARK BRAINLIEST, NO FAKE ANSWERS OR WILL BE REPORTED.

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

The Correct choice is ~

A. [tex]-{x}^{2}+x+3[/tex]

[tex] \large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}[/tex]

The solution is in attachment ~

Simplify by collecting like terms
r^+5r+3r^-2r

By the way
^= square

Ill also attach a photo, thankssss!

Answers

Answer:

Step-by-step explanation:

Like terms have same variable with same power.

r² + 5r + 3r² - 2r = r² + 3r² + 5r - 2r

= 4r² + 3r

a shop only buys bananas with length between 13cm and 20cm. Estimate the fraction of the 80 bananas that the shop buys

Answers

Answer:

[tex]\frac{44}{80}[/tex]

Step-by-step explanation:

We know that the shop only buys Banana with lengths between 13 cm and 20 cm.

So, the fraction of the 80 bananas is actually a ratio between the y-values of each length (13 and 20 cm) and the total 80. First, let's see which y-values belong to each length.

Notice that 13 below to 20 at Cumulative Frequency. And 20 belongs to 62. So, the pairs are (13,20) and (20,62).

[tex]\frac{62-20}{80} =\frac{42}{80}[/tex]

Therefore the shop only buys 42 bananas out of 80, because those are between 13 cm and 20 cm.

Answer:

44/80

Step-by-step explanation:

8.90 x 3.12 will give brainlist

Answers

27.768

Multiply 890 and 312

This equals 277680

We know that there were 4 numbers behind a decimal point

Therefore the last four numbers of 277680 need to be behind a decimal point as well

So you're answer is 27.7680 or 27.768

hi please help :)????

Answers

there's not information for me to help. what are the choices in the word box?

Which expression is equivalent to 5 to the power of 6

5^6

Answers

Answer:

5^6

5^6 is the same thing as

5^6=5×5×5×5×5×5

=5×5=25×5=125×5=625×5=3125×5=15625

5^6= 15625

Answer:

125 * 125

Step-by-step explanation:

do 125 x 125 = 15625

I need help with this math

Answers

Answer:

Step-by-step explanation:

∠1 + ∠2 = 180 {Supplementary angles}

6x + 15 + 3x + 3 = 180

6x + 3x + 15 + 3 = 180

Combine like terms

9x + 18 = 180

Subtract 18 from both sides

9x = 180 - 18

9x = 162

x = 162/9

x = 18

∠2 = 3x +3

= 3*18 + 3

= 54 + 3

∠2 = 57°

Answer:

Answer is option D) 57°

Here is the explanation...

If the mean of the numbers 8, 9, 10, 11, and x is 12, then what is the value of x?

A. 7

B. 12

C. 22

D. 38

Answers

Answer:

C=22

Step-by-step explanation:

8+9+10+11+x divided by 5 gives 12

38+x divide by five gives 12

12×5=60

38+x=60

x=22

brainlist please

Determine the value of the expression 2(x - 3) when x = 2.

Answers

Answer:

-2

Step-by-step explanation:

2(x-3), x=2

Since we know what x equals, plug it into the equation

2(2-3)

2(-1)

-2

Answer:

2(2-3)

4-3

Step-by-step explanation:

[tex]2(2 - 3) \\ 4 - 3 \\ 1[/tex]

Help me show my work on 13.

Answers

Answer:

Just show basic multiplication skills that we learned in 3th grade i suppose since your teacher dosen't have a brain to figure this out

what is [70+(-30)]+[2+(-9)]+[0.3+(-0.1)]

Answers

Answer:

33.2

Step-by-step explanation:

When you add the left side of the equation, you get 33.2 because 70-30 is 40, 40+2 is 42, 42-9 is 33, 33+0.3 is 33.03, 33.3-0.1 is 33.2.

When you add the right side of the equation, you get 33.2, because they are the same problem but on side has brackets.

Hope this helps you.

Pls help
bobik: yes, or no

Answers

Answer:

yes

Step-by-step explanation:

Answer:

?? Yes??

Step-by-step explanation:

please do this for me

Answers

Answer:

Nznxnsnxjjskskksjs

Step-by-step explanation:

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Nxs

For the reaction 2Fe + O2 → 2FeO, how many grams of iron oxide are produced from 42.4 mol of iron?

Answers

In the balanced reaction

2 Fe + O₂ → 2 FeO

2 moles of iron (Fe) react with 1 mole of molecular oxygen (O₂) to produce 2 moles of iron oxide (FeO). The ratio of Fe to FeO is 1-to-1, so if one starts with 42.4 mol of Fe, one will end up with the same amount of FeO, 42.4 mol.

Look up the molar mass of Fe and O:

• Fe = 55.845 g/mol

• O = 15.999 g/mol

Then the molar mass of FeO is approximately 71.835 g/mol, and so the mass of 42.4 mol of FeO is

(42.4 mol) × (71.835 g/mol) ≈ 3050 g

FEAR OF CLOWNS When you see a clown, what do you feel? You feel happy and ready to laugha, right? That's because we know that clowns make jokes, do funny antics and perform tricks to make us laugh. But did you know that there are people who tremble with fear when they see a clown?
These people have an unnatural fear of clowns. To know what this phobia is called:
Directions: Encircle the CORRECT LETTER. Then write the correct letter on the blank below. Determine the equation of a line passing through the following points. Use another sheet of paper for the solution.

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Answer:

Coulrophobia

Step-by-step explanation:

Coulrophobia

the line through (6, 1) and (-3,5) in
slope-intercept form

Answers

Answer: y = -4/9x + 11/3

Step-by-step explanation:

how much is 40+ 12= and 34=23=34=45=4=

Answers

Answer:

52 and 150?

Step-by-step explanation:

40+12=52

34+23+34+45+4

Simplify: 57+34+49

Simplify: 91+49

Add: 140

5 = t + 12
please help me for this

Answers

Answer:

t = -7

Step-by-step explanation:

You have to get t by itself. Just take the 12 and subtract it from both sides. 5-12 on the left and 12-12 on the right. You then end up with -7 = t or t = -7.

Write a unit rate for each situation . 20$ saved in 4 weeks

Answers

Answer:

so the answer is 5

Step-by-step explanation:

20/4=5

Solve the math problem

Answers

2 a. positive b. positive c. zero
3 a. positive- 3/2 slope b. negative -3/4

Answer:

Step-by-step explanation:

2a. Slope is positive

2b. Slope is negitive

2c. Slope is zero

3a. Slope is positive 1.

3b. Slope is [tex]\frac{-4}{3}[/tex]

Self explanatory solve porfavor

Answers

2(2/5) divided 2(-1/5)

we do PEMDAS meaning parenthesis first

2(2/5) = 4/5(calculator)

2/1x2/5=4/5

now

2/1x-1/5=-2/5

now we do division

4/5/-2/5 we get -2

-2

If the heights of a population of men are approximately Normally distributed, and the middle 99.7% have heights between 5'0" and 7'0", what is the standard deviation of the heights of the population?

a. 1"

b. 12"

c. 6"

d. 4"

e. 3"

Answers

Answer:

4 inches

Step-by-step explanation:

the middle number is 6 and the distance from 99.7 from the middle is 3 standard deviations. 12/3 =4

The value of 99.7% is the closest to the percentage of these heights that is within 3 standard deviations of the mean. The correct option is e.

What is the empirical rule?

If your distribution follows a normal distribution, the standard deviation and mean can tell you where the majority of the data are.

It is given that the heights of a large population of ostriches are normally distributed. The percentage of these heights is within 3 standard deviations of the mean.

As we know from the empirical rule:

It is the rule of 68-95-99.7.

From the data given in the question: The height of a large population of ostriches is normally distributed.

X ~ (u, б²)

Normal distribution.

P{u - 3б < X < u + 3б}

From the distribution table:

P{u - 3б < X < u + 3б} = 99.7%

Thus, the value of 99.7% is the closest to the percentage of these heights that is within 3 standard deviations of the mean.

Learn more about the empirical rule here:

brainly.com/question/5440679

#SPJ2

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