20/4+8/3 answer? I don’t get the question

Answers

Answer 1

Answer:

Step-by-step explanation:

if you need to add 2 fractions

20/4+ 8/3

common denominator is 12

60/12+32/12=92/12= 7 8/12  =7 2/3


Related Questions

6x1/6 gente me ajudaaaa kakakkw e pra um teste de matematica
RESPONDE EM PORTUGUES PFV​

Answers

6x1/6=6/6=1

---

hope it helps

Why rotation, reflection, and translation are rigid motion?

Answers

Answer:

Reflections, translations, rotations, and combinations of these three transformations are "rigid transformations". ... A reflection is called a rigid transformation or isometry because the image is the same size and shape as the pre-image.

Hope it helps!!!

Because the image is the same size as the pre-image

If 15 people can fit comfortably in a 5 ftby 5 squarewhat is the ratio of the people to the rectangle's area ?

Answers

Answer: 15:25

Step-by-step explanation: the number of people is 15 and the area would be 25

ill mark brainlist plss help

Answers

Answer:

A rectangle

Step-by-step explanation:

A rectangle is a quadrilateral ( 4 sided shape) and the opposite sides are always congruent therefore the answer is rectangle

HELP ASAP I NEED HELP WITH THIS

Answers

Answer: 10/27

               

Step-by-step explanation:

Your multiplying the top and bottom yw :)

Answer:

I GOT YOU I GOT YOU

THE ANSWER IS 10/27

4(A) The table given shows the change in price in a sale.
TV
Laptop
Normal
Dhs 2000
Dhs 1800
price
Sale price
Dhs 1750
Dhs 1440
(a) Calculate the percentage increase or decrease for
(0) TV and
) Laptop
(b) Which item has the best reduced price?
Cho can anyone help me ​

Answers

Answer:

(a)

[tex]\%Decrease= 12.5\%[/tex] --- TV

[tex]\%Decrease= 20\%[/tex] --- Laptop

(b) Laptop

Step-by-step explanation:

Given

Normal                       Sales

[tex]TV = 2000[/tex]                  [tex]TV = 1750[/tex]

[tex]Laptop = 1800[/tex]             [tex]Laptop = 1440[/tex]

Solving (a): Percentage increase of decrease for both

Percentage change is calculated as:

[tex]\%Change = \frac{New - Old}{Old} * 100\%[/tex]

For TV

[tex]\%Change = \frac{1750 - 2000}{2000} * 100\%[/tex]

[tex]\%Change = \frac{-250}{2000} * 100\%[/tex]

[tex]\%Change = -0.125* 100\%[/tex]

[tex]\%Change = -12.5\%[/tex]

It is a decrease because it is negative

[tex]\%Decrease= 12.5\%[/tex]

For Laptop

[tex]\%Change = \frac{1440 - 1800}{1800} * 100\%[/tex]

[tex]\%Change = \frac{-360}{1800} * 100\%[/tex]

[tex]\%Change = -0.2* 100\%[/tex]

[tex]\%Change = -20\%[/tex]

It is a decrease because it is negative

[tex]\%Decrease= 20\%[/tex]

Solving (b):

Laptop has the best reduced price  because it has a larger percentage decrease

What is the feet....

Answers

Answer: 29 feet from across the kitchen to one hole to the other.

What is the measure of CED?

Answers

The measure of CED is p degree. By AA rule of similarity, Corresponding angles of similar triangles are same. Therefore the measure of CED is p degree.

PLEASE MARK BRAINLIST

Pea plants contain two genes for seed color, each of which may be Y (for yellow seeds) or G (for green seeds). Plants that contain one of each type of gene are called heterozygous. According to a theory of genetics, if two heterozygous plants are crossed, each of their offspring will have probability 0.75 of having yellow seeds and probability 0.25 of having green seeds.
A) Out of 10 offspring of heterozygous plants, what is the probability that exactly 3 have green seeds?
B) Out of 10 offspring of heterozygous plants, what is the probability that more than 2 have green seeds?
C) Out of 100 offspring of heterozygous plants, what is the probability that more than 30 have green seeds?
D) Out of 100 offspring of heterozygous plants, what is the probability that between 30 and 35 inclusive have green seeds?
E) Out of 100 offspring of heterozygous plants, what is the probability that fewer than 80 have yellow seeds?

Answers

Answer:

a) 0.2503 = 25.03% probability that exactly 3 have green seeds.

b) 0.4744 = 47.44% probability that more than 2 have green seeds.

c) 0.1020 = 10.20% probability that more than 30 have green seeds.

d) 0.1414 = 14.14% probability that between 30 and 35 inclusive have green seeds.

e) 0.8508 = 85.05% probability that fewer than 80 have yellow seeds

Step-by-step explanation:

For questions a and b, the binomial probability distribution is used. For questions c, d and e, the binomial distribution is approximated to the normal.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

The expected value of the binomial distribution is:

[tex]E(X) = np[/tex]

The standard deviation of the binomial distribution is:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]

Normal probability distribution

Problems of normally distributed distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that [tex]\mu = E(X)[/tex], [tex]\sigma = \sqrt{V(X)}[/tex].

A) Out of 10 offspring of heterozygous plants, what is the probability that exactly 3 have green seeds?

10 offspring of heterozygous plants means that [tex]n = 3[/tex]

Probability 0.25 of having green seeds means that [tex]p = 0.25[/tex]

This probability is P(X = 3). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 3) = C_{10,3}.(0.25)^{3}.(0.75)^{7} = 0.2503[/tex]

0.2503 = 25.03% probability that exactly 3 have green seeds.

B) Out of 10 offspring of heterozygous plants, what is the probability that more than 2 have green seeds?

This is

[tex]P(X > 2) = 1 - P(X \leq 2)[/tex]

In which

[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)[/tex]

So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 0) = C_{10,0}.(0.25)^{0}.(0.75)^{10} = 0.0563[/tex]

[tex]P(X = 1) = C_{10,1}.(0.25)^{1}.(0.75)^{9} = 0.1877[/tex]

[tex]P(X = 2) = C_{10,2}.(0.25)^{2}.(0.75)^{8} = 0.2816[/tex]

[tex]P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.0563 + 0.1877 + 0.2816 = 0.5256[/tex]

[tex]P(X > 2) = 1 - P(X \leq 2) = 1 - 0.5256 = 0.4744[/tex]

0.4744 = 47.44% probability that more than 2 have green seeds.

C) Out of 100 offspring of heterozygous plants, what is the probability that more than 30 have green seeds?

Now

[tex]n = 100[/tex]

[tex]\mu = E(x) = np = 100*0.25 = 25[/tex]

[tex]\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{100*0.25*0.75} = 4.33[/tex]

Using continuity correction, this is [tex]P(X > 30 + 0.5) = P(X > 30.5)[/tex], which is 1 subtracted by the pvalue of Z when X = 30.5. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{30.5 - 25}{4.33}[/tex]

[tex]Z = 1.27[/tex]

[tex]Z = 1.27[/tex] has a pvalue of 0.8980

1 - 0.8980 = 0.1020

0.1020 = 10.20% probability that more than 30 have green seeds.

D) Out of 100 offspring of heterozygous plants, what is the probability that between 30 and 35 inclusive have green seeds?

Using continuity correction, this is [tex]P(30-0.5 \leq X \leq 35 + 0.5) = P(29.5 \leq X \leq 35.5)[/tex], which is the pvalue of Z when X = 35.5 subtracted by the pvalue of Z when X = 29.5.

X = 35.5

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{35.5 - 25}{4.33}[/tex]

[tex]Z = 2.42[/tex]

[tex]Z = 2.42[/tex] has a pvalue of 0.9922

X = 29.5

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{29.5 - 25}{4.33}[/tex]

[tex]Z = 1.04[/tex]

[tex]Z = 1.04[/tex] has a pvalue of 0.8508

0.9922 - 0.8508 = 0.1414

0.1414 = 14.14% probability that between 30 and 35 inclusive have green seeds.

E) Out of 100 offspring of heterozygous plants, what is the probability that fewer than 80 have yellow seeds?

0.75 probability of yellow seeds, so [tex]p = 0.75[/tex]. So

[tex]\mu = E(x) = np = 100*0.75 = 75[/tex]

[tex]\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{100*0.75*0.25} = 4.33[/tex]

This probability is [tex]P(X < 80 - 0.5) = P(X < 79.5)[/tex], which is the pvalue of Z when X = 79.5.

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{79.5 - 75}{4.33}[/tex]

[tex]Z = 1.04[/tex]

[tex]Z = 1.04[/tex] has a pvalue of 0.8508

0.8508 = 85.05% probability that fewer than 80 have yellow seeds


Write the recurring decimal 0.67
as a fraction

Answers

2/3 I hope this helps!! :3

X^(2)+8=5 exponent of variable in this equation is​

Answers

Answer:

The exponent of the variable of this equation is 2.

And here's the solution to the equation:

[tex]x^{2} +8=5[/tex]

[tex]x^{2} = 5 - 8[/tex]

[tex]x^{2} = -3[/tex]

[tex]x[/tex] ∉ R

What is the greatest common factor of all the terms: 6m and 18

Answers

6 because you can take 6 out of 6m (you get m) and take 6 out of 18 (you get 3) but there is no greater factor to take out

Answer: 6

Step-by-step explanation:

if anyone know the answers to this question i really need help.

Answers

Answer:

b.) 6

Step-by-step explanation:

2^6 = 64 because 2 * 2 * 2 * 2 * 2 * 2 = 64.

need help geometry question central angles and arcs???pls

Answers

Answer:

84.96 G

Step-by-step explanation:

cuz im connected to einstine and im smart like him

Solve the exponential equations: 2^3x =11

Answers

Answer:

x = 3

Step-by-step explanation:

2 + 3x = 11

3x = 11 - 2

3x = 9 (divide both sides by 3 to get x)

3x/3 = 9/3

x = 3

In the given exponential equations: [tex]2^3x[/tex] = 11, the value of x is [tex]\frac{log_211}{3}[/tex].

Mathematically, an equation is a statement that asserts the equivalency of two expressions. It consists of two hands, the left-hand side( LHS) and the right-hand side( RHS), separated by an equal sign( =). The LHS and RHS can be numbers, variables, constants, or further complex fine expressions.

Equations can be classified based on their degree, which corresponds to the highest power of the variables involved. For example, linear equations have a degree of 1, quadratic equations have a degree of 2, and so on.

Given the equation:

[tex]2^3^x[/tex] = 11

Take the logarithm of both sides,

log [tex]2^3^x[/tex] = log 11

3x log2 = log 11

3x = [tex]\frac{log 11}{log2}[/tex]

3x = [tex]log_211[/tex]

x = [tex]\frac{log_211}{3}[/tex].

So, the value of x is [tex]\frac{log_211}{3}[/tex].

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Which inequality represents: 3 is less than y minus 2

Answers

Answer:

3>y-2

Step-by-step explanation:

your welcome i think

4. Marcos wants to paint his skateboard ramp shown below. What is the total surface area of the skateboard ramp?​

Answers

Answer:

yshshhshs

Step-by-step explanation:

shhshshsbbs

A jewelry store offers its own brand of customizable charm bracelets. You are able to choose from 9
different charms for your bracelet.
How many different charm bracelets is it possible to create?

Answers

Answer:

It depends on the number of charms that your bracelet can have.

here we need to count the number of selections that we have, and the number of options for each one of these selections.

So if we can have only one charm, we have only one selection, and for that selection, we have 9 options, then there are 9 different one-charm bracelets.

If each bracelet can have 2 charms then we have two selections.

For the first selection, we have 9 options,

If each charm can be selected only one time, then for the next selection we will have 8 options, now the total number of combinations is equal to the product between the numbers of options for each selection, so here the total number of combinations is:

C = 9*8 = 72

If we can select 3 charms, then:

first charm = 9 options

second charm = 8 options

third charm = 7 options

Total number of combinations = 9*8*7 = 504 combinations.

Notice that we can not give an exact answer because we do not know the number of charms in each bracelet and we do not know if a charm can be selected multiple times or only one, but here you could see the general way to solve this kind of problems.

Mindy is playing a game. She notices that the ratio of red tokens to purple tokens is 2 to 3. She counts 6 red tokens. Draw numbers to complete the diagram to the number of purple tokens. Numbers may be used once, more than once, or not at all.

Answers

Do you is playing games notices that the ratio of red tokens to purple tokens is 2 to 3 to count six red tokens John numbers to complete the diagram to the number of purple tokens numbers may be used once more than once or not at all.

Answer:

Make a conjecture. How are rigid transformations and congruent figures related? Check all that apply.
Rigid transformations preserve segment lengths and angle measures.
Rigid transformations produce congruent figures.
If two figures are congruent, then there is a rigid transformation or a combination of rigid transformations that will
map one onto the other.

Answers

Map one onto the other rigid transformations preserve segments

PLZZZ HELP
Triangle GHI is similar to triangle JKL. Find the measure of side KL Round your
answer to the nearest tenth if necessary.
8
L
H
K

Answers

So you would do first is look for a scale factor between KJ and HG sake J is 48 and HG is 11 now we can see that the triangle to the right is after transformation for just the dilation is greater than 1. You’re going to divide 48/11=4.36 but when rounded the answer is 4.4 now that’s your scale factor so now multiply the scale factor by 8 giving the answer of 35.2

Please answer quick just super small explanation pls hurry quick for brainlessly

Answers

The answer is D. because the diameter would be doubled aswell

Question 5 of 10
Which of the following graphs represents the equation y- 4 = 3(x - 1)?
А
B
C
5+(2,5)
5
(-1,2)
P(1,4
(1,2)
/(2, 1)
.5
.
5
15
1.2.1)
(1.-2)
(-1.-2)
-5

Answers

Answer:

a

Step-by-step explanation:

PLEASE HELP ME!!!! HOW DO I GRAPH THIS??????

Answers

Answer:

draw the picture then put a box around it and label the body parts and that fun stuff

MULTIPLE CHOICE PLS ANSWER THANKS

Answers

Answer:

I think answer is B

B.10x+150=180

The table shows the rates for sending text messages. Are the rates proportional? Explain.

Answers

Answer:

Yes

Step-by-step explanation:

Remember in order for the rates to be proportional it has to have a constant rate of change and it has to go through the origin if graphed

For one this has a constant rate of change which is 3 dollars per 25 messages

Now we just have to find out if it would go through the origin (0,0)

To do so we subtract 3 dollars and then 25 messages

6-3=3

50 - 25 =25

then again 25-25=0

3-3=0

concluding that (0,0) is a solution

Thus meaning that this is a proportional relationship

If a rectangle has length x and width x+3, what is the perimeter of the rectangle in terms of x?

Answers

Answer:

[tex]4x+6[/tex] units

Step-by-step explanation:

Skills needed to solve: Order of Operations, Distributive Property, Perimeter Formula, Like Terms

1) To solve this problem, you need to understand the perimeter formula, and that is:

--> [tex]P = 2(L+W)[/tex]

P = Perimeter

L = Length

W = Width

2) Based on that, we are given that:

[tex]L = x[/tex] (since the length is x)

[tex]W = x+3[/tex] (since the width is x+3)

3) After that, we substitute in the values:

[tex]P = 2(L+W)[/tex]

[tex]P = 2(x+(x+3))[/tex]

[tex]x + (x+3) = x+x+3 = 2x+3[/tex] (with like terms and addition)

so: [tex]P=2(2x+3)[/tex]

Use distributive property, which is [tex]a(b+c) = ab+ac[/tex]

get: [tex]2(2x+3) = 2(2x) + 2(3)[/tex]

[tex]2(2x) = 4x[/tex]

[tex]2(3) = 6[/tex]

So: [tex]P = 4x+6[/tex]

Hope this helps and have a nice day!! :) :]

giving brainliest *easy*

Answers

Answer:

pi

Step-by-step explanation:

to convert angles to radians you must multiply the angle measurement by the formula pi/180

180 x pi/180

the 180s cancel out and you are left with pi

Answer:

3.14159 Radian

Step-by-step explanation:

3.142rad × 180/π = 180°

the illustration below shows the graph of y as a function of x complete the following sentences based on the graph of the function

Answers

Answer:

*This is the graph of a [NON-LINEAR].

*The y-intercept of the graph is the function value y=[0]. *The smallest positive x-intercept of the graph is located at x=[π/2]. *The greatest value of y is y=[2]. *For x between x= -π and x= -π/2, the function value y[>]0.

This is the graph of a sin function.

The y-intercept of the graph is the function value y = 0

The smallest positive x-intercept of the graph is located at x = π/2

The greatest value of y is y = 2

For a between x = -π and x = -π/2 the function value y > 0

How to identify sin functions

A sine function graph represents the behavior of the sine function over a specific interval. The graph of a sine function has the following characteristics:

Shape: The graph of a sine function resembles a wave. It consists of a series of repeated crests (peaks) and troughs (valleys) that oscillate above and below a central line called the midline.

Period: The graph repeats itself over a specific interval called the period. The standard period of the sine function is 2π radians or 360 degrees. This means that the graph completes one full wave cycle in this interval.

Amplitude: The amplitude determines the vertical distance between the midline and the maximum or minimum points of the graph. It represents the maximum deviation of the function from the midline. The amplitude of the sine function is always positive.

Midline: The midline is the horizontal line that the sine function oscillates around. It is located between the maximum and minimum points of the graph and has a constant y-value.

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A piece of rope 6.54 metres long is cut
into two pieces. One piece is twice as
long as the other. What is the length of
the longest piece?

Answers

X=shorter piece of rope
2X=longest piece of rope
X+2X=6.54 m
3X=6.54 m
X=6.54/3
X=2.18 m

Shorter piece is 2.18 m long
Longest piece is 2•2.18=4.36 m long
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