Decide whether the triangles are similar. If so, determine the appropriate expression to solve for X.
PLEASE HELP 10points plus Brainlyest if correct

Answer:

4x³ - 4x² - 4x - 8

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define expression

(4x³ - 12x² - 5) - (-8x² + 4x + 3)

Step 2: Simplify

The distance between points AB at A(2, 5) and B(2, 10) is 5 units

An equation is an expression that shows the relationship between two or more numbers and variables.

The distance between two points A(x₁, y₁) and B(x₂, y₂) on the coordinate plane is:

[tex]AB=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]

Let us assume that AB has coordinate at A(2, 5) and B(2, 10), hence:

[tex]AB=\sqrt{(10-5)^2+(2-2)^2}=5\ units[/tex]

The distance between points AB at A(2, 5) and B(2, 10) is 5 units

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Answer:

x=75

Step-by-step explanation:

[tex]We\ are\ given\ that:\\AD\ is\ the\ altitude\ of\ \triangle ABC\\Hence,\\ADC=90[As\ altitudes\ intersect\ the\ base\ side\ at\ 90]\\Hence,\\As\ ADC=(x+15)\ and\ ADC=90\\x+15=90\\x=90-15\\x=75[/tex]

This is only the value of x in terms of AD being an altitude, and is independent off the sides.

Answer:

9

Step-by-step explanation:

substitute the value

Answer:

He will save $300

Hope this helps

Answer:

[tex] RT = 1.1 [/tex]

Step-by-step explanation:

Distance between R(3, 1.3) and T(3, 2.4):

[tex] RT = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

[tex] RT = \sqrt{(3 - 3)^2 + (2.4 - 1.3)^2} [/tex]

[tex] RT = \sqrt{(0)^2 + (1.1)^2} [/tex]

[tex] RT = \sqrt{0 + 1.21} = \sqrt{1.21} [/tex]

[tex] RT = 1.1 [/tex]

Answer:

s = 1

Step-by-step explanation:

7 = -10s - 3

=> 7 + 3 = 10s

=> 10 = 10s

=> 10/10 = s

=> 1 = s

Answer: s= -1

Step-by-step explanation:

Answer:

6 to the power of 3 means your base number is 6 and the 3 is how many times you multiply 6 by itself (6×6×6). the answer is 216

Answer:

Step-by-step explanation:

What you are being told is that 3x - 7 is twice as big as x. You can see that because ST (for example) is cut into 2 equal parts. So is UT (cut into two equal parts). So the parts of the Big Triangle (SUT) are twice as Big as the parts of the small triangle DET

So multiply x by 2

3x - 7 = 2x                                Add 7 to both sides

3x - 7  + 7 = 2x + 7

3x = 2x + 7                               Subtract 2x from both sides

3x-2x = 7

x = 7

Answer:

1. 50℅

2. 25℅

3. 60℅

hope it helps.

Answer:

Below.

Step-by-step explanation:

1. Divide 15 by 30 which is  1/2.

Then multiply 1/2 by 100 = 50%.

2.  3/12 = 1/4

1/4 * 100 = 25%

3.  6/10 = 0.6

0.6 * 100 = 60%.

Answer:

A) Mean = 135 Variance = 62 Standard Deviation = 8

Step-by-step explanation:

Given that :

Proportion (p) = 54%

Sample size (n) = 250

Using Normal approximation :

Mean = np

Mean = 250 * 0.54 = 135

Variance = npq ; q = 1 - p = 1 - 0.54 = 0.46

Variance = (250 * 0.54 * 0.46) = 62.1 = 62

Standard deviation = √variance = √62.1

Standard deviation = 7.8803553 = 8

Answer:

h - g goes with 3, gh goes with 2, g squared minus h goes with 5, g - h goes with 1, g + h goes with 3, and g + h squared goes with 6. The numbers are the options.

Step-by-step explanation:

Not much to say. Just remember that squared numbers can't be negative.

Answer:

21 / 143

Step-by-step explanation:

Given that:

Number of Eastern conference reps = 8

Number of western conference rep = 7

Probability of selecting 3 from Eastern reps and 2 from western reps

Probability = required outcome / Total possible outcomes

Total possible outcomes:

selection to be made = 3+ 2 = 5

Total Number of players = 8 +7 = 15

Total possible outcomes

Using combination formula :

nCr = n! / (n-r)!r!

15C5 = 15! / 10!5! = (15 * 14 * 13 * 12 * 11) / (5*4'3*2*1) = 360360 / 120 = 3003

Total possible outcomes = 3003

Required outcome :

8C3 * 7C2

8C3 = 56 ; 7C2 = 21

8C3 * 7C2 = 56 * 21 = 1176

required outcome / Total possible outcomes

= 1176 / 3003

= 21 / 143

Using the hypergeometric distribution, it is found that the probability is:

c. 56/143

The players are selected from the sample without replacement, hence, the hypergeometric distribution is used.

Hypergeometric distribution:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

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

The parameters are:

In this problem:

The probability is P(X = 3), hence:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 3) = h(3,15,5,8) = \frac{C_{8,3}C_{7,2}}{C_{15,5}} = 0.3916[/tex]

For which the equivalent fraction is option c.

A similar problem is given at https://brainly.com/question/24826394

Answer:

5y + 8

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

this is basic algebra so it's important to understand this concept now. you need to combine like terms so 3x-6=9 becomes 3x=15 (you add the 6 to add like terms). You then divide the 3 from 3x on both sides to get x=5

The value of x makes the equation 3x - 6 = 9 true is: x = 5.

Here, we have,

given that,

the equation is: 3x - 6 = 9

so have,

3x-6=9

We need to combine like terms

=> 3x = 9 + 6

(we add the 6 to add like terms).

becomes, => 3x=15

we then divide the 3 from on both sides

=> 3x/3 = 15/3

we get

=> x=5

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Answer:

14 or 11

Step-by-step explanation:

because 14 is more than 11 and the question asks how many people it feeds not how many people can it feed out the people there

Answer:

I Believe It Will Feed 154 People

Step-by-step explanation:

Because 1 Fruit Cake feeds 11 people so I did 11*14

She said a delicious FRUITCAKE that

serves 11 people. Then she said there are 14 FRUITCAKES.

Please Mark Brainliest!!!!

Answer:

32

Step-by-step explanation:

let the space be x

x + 27 + x + 27 + x = 150

3x + 54 = 150

3x = 96

x= 32

Answer:

pretty sure the answer is 11

Answer:

x = 11

Step-by-step explanation:

5 + 3x - 37 = 6x + 23 - 8x

3x - 6x + 8x = 37 - 5 + 23

11x - 6x = 60 - 5

5x = 55

x = 55/5

x = 11

Thus, the value for x is 11

-TheUnknownScientist

Answer:

440

Step-by-step explanation:

I learned with parenthesis if its like this 4(7)

It usually means to multiply

soo

88 times 5

=440

soo

88

1.) Choice B

p= b+h+c

SA= bh + pl

p=15+20+25 = 60

SA= 15(20) + 60(30) = 2100

2.) Choice D

V= lwh

V= (40)(22)(23.5)

V= 20680

1 liter = 1000cm^3

   1L       =     x    

1000cm      20680

x= 20.7 liters

3.) Choice B

V= (1/3)a^2(h)

V= (1/3)9^2(6.5)

V= 175.5

4.) I don't know this

Incomplete question. Repost the complete problem.

Answer:

I think it would be C.

Step-by-step explanation:

One is positive Four is negative so is 1+(-4)

Answer:

A: 0.1003

Step-by-step explanation:

We are given;

Population mean; μ = 56.8

Population size; n = 51

Population standard deviation; σ = 12.3

We want to find; P(x > 59)

We will use the z-score formula.

z = (x - μ)/(σ/√n)

z = (59 - 56.8)/(12.3/√51)

z = 1.28

From z-distribution table attached, we have; P(z < 1.28) = 0.8997

Thus;

P(z > 1.28) = 1 - 0.8997 = 0.1003

See attachment for the scatter plot created using the graphing calculator

The table of values is given as

Time, t         0        1      1.5       2.5    3  

Height, h    280   264   244    180   136

Next, we enter the above values in a graphing calculator to create the scatter plot

See attachment for the scatter plot created using the graphing calculator

From the graphing calculator, we have

h = -16t^2 + 280

This means that

h = 0

So, we have

-16t^2 + 280 = 0

Divide through by -16

So, we have

t^2 - 17.5 = 0

This gives

t^2 = 17.5

Take the square roots

t = 4.18

Hence, the sponge will hit the ground after 4.18 seconds

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Complete question

The table shows the heights h(in feet) of a sponge t seconds after it was dropped by a window cleaner on top of a skyscraper

Time, t         0        1      1.5       2.5    3  

Height, h    280   264   244    180   136

A. Use a graphing calculator to create a scatter plot

B. Find the best fitting quadratic model for the data

C. Use your model to predict when the sponge will hit the ground

Answer:

a. C

b. A

c. B

d. D

Step-by-step explanation:

[tex]a.\ \ \frac{x}{m} < -1 \Longleftrightarrow x < -m[/tex]

Then

The graph that represents the inequality is C.

[tex]b.\ \ \frac{x}{m} > 1 \Longleftrightarrow x > m[/tex]

Then

The graph that represents the inequality is A.

[tex]c.\ \ \frac{x}{m} < 1 \Longleftrightarrow x < m[/tex]

Then

The graph that represents the inequality is B

[tex]d.\ \ -\frac{x}{m} < 1 \Longleftrightarrow -x < m \Longleftrightarrow x > -m[/tex]

Then

The graph that represents the inequality is D.

Answer:

2 5/18

Step-by-step explanation:

It's the last choice

Answer:

yes 4000×48=192000

very clever....(dead serious)

Answer:

We can think in this situation as:

There is 10% (or a probability equal to 0.1) where the citrus grower's profit will be reduced by $15,000

There is 10% (or a probability equal to 0.1) where the citrus grower's profit will be reduced by $25,000

And in the remaining 80% (or a probability equal to 0.8), the profit does not change.

Then the expected value for the total profit can be written as:

EV = $100,000 + ( 0.1*(-$15,000) + 0.1*(-$25,000) + 0.8*$0)

     =  $96,000

In the case where the citrus grower spends $5000 to protect the fruits against possible bad weather, there is a 100% that is profit will not change, but he must pay $5,000

Then his profit will be:

P = $100,000 - $5,000 = $95,000

So in this case, the profit is $1000 less than the expected profit in the prior case. So the scenario where he does not buy the protection has a larger expected profit, which may mean that is better to not buy it (in a straight mathematical point of view)

One also could think that  the values are really close together, so buying the protection does not mean a big change, and increases the security