Find the SA if this Square Pyramid:

(Don’t forget all 4 sides of the square are the same length which also means all four lateral triangles will be the same area)

Answer: i think the last one is the correct answer

hope this was correct

Step-by-step explanation:

Answer:

a (6,-3)

b (9,0)

c (5,1)

Step-by-step explanation:

Answer:

0.784 = 78.4% probability that there will be at least one failed graft in the next three done

Step-by-step explanation:

To solve this question, we need to understand the binomial probability distribution and conditional probability.

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.

Conditional Probability

We use the conditional probability formula to solve this question. It is

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which

P(B|A) is the probability of event B happening, given that A happened.

[tex]P(A \cap B)[/tex] is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: No failed grafts in the first seven

Event B: At least one fail in the next three.

Intersection of events A and B:

Since the probability of a graft failling is independent of other grafts, we have that:

[tex]P(A \cap B) = P(A)*P(B)[/tex]

So

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{P(A)*P(B)}{P(A)} = P(B)[/tex]

So we just have to find the probability of one fail in three trials.

Three trials means that [tex]n = 3[/tex].

The probability is

[tex]P(X \geq 1) = 1 - P(X = 0)[/tex]

In which

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

[tex]P(X = 0) = C_{3,0}.(0.4)^{0}.(0.6)^{3} = 0.216[/tex]

Then

[tex]P(X \geq 1) = 1 - P(X = 0) = 1 - 0.216 = 0.784[/tex]

0.784 = 78.4% probability that there will be at least one failed graft in the next three done

Answer:

20,24,28

Step-by-step explanation:

It is increasing by 4 each time

Mark me brainliest please :)

Answer:

20, 24, 28

Step-by-step explanation:

yeah

Answer:

Step-by-step explanation:

okay, so here are a few methods you can use.

___

1) +

x + 7 = 10 so because this is addition we use the reverse, subtraction. So

x - 7 = 10 - 7 and that equals to 3.

2) -

x - 2 = 10 so because this is subtraction we do the reverse, addition.

x + 2 = 10 + 2 and that equals to 12.

3) x

x times 3 = 21 because this is multiplying we divide.

x/3 = 21/3 and that would be 7.

4) /

x/2 = 10 same as above, reverse is multiplying.

x times 2 = 10 times 2 and thats 20.

GL!

Answer:

Step-by-step explanation:

41

Answer:

C. -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

-7x + 6 = 27

Step 2: Solve for x

Answer:

135 minutes

Step-by-step explanation:

The total number of minutes Tim needs to practice is 300 minutes.

We subtract the number of minutes he has already finshed:

300 - 127 - 38 = 135 minutes

Answer:

138 minutes

Step-by-step explanation:

so all we have to do is subtract the times he practiced for on sunday and tuesday by 300

300-127-38=138

he still has to practice 138 minutes to reach his goal

To raise the amount of $500 each member has to raise $50.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the 10 members of the Photography Club want to raise $500, so they will hold a raffle with donated prizes. Jesse proposes that to reach their goal, each member should sell 50 raffle tickets. Alexis proposes that each member should raise $50.

The amount for each person will be,

Amount = 500/10

Amount = $50

Therefore, to raise the amount of $500 each member has to raise $50.

To know more about an expression follow

https://brainly.com/question/28450640

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Answer:

37,500 and non recurring

Step-by-step explanation:

The Riley's will pay a total of $7,500 in costs for the closing costs and $30,000 down payment on their mortgage.

Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".

Given that, Rileys are buying a home that costs $250,000.

12% for a down payment

So, down payment is

12% of 250,000

= 12/100 ×250,000

= 12×2500

= $30,000

They are paying 3% in closing costs

3% of 250,000

= 3/100×250,000

= $7,500

Therefore, the Riley's will pay a total of $7,500 in costs for the closing costs and $30,000 down payment on their mortgage.

To learn more about the percentage visit:

brainly.com/question/24159063.

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Answer:

49 years old

Step-by-step explanation:

x + x + 5 = 103

2x + 5 = 103

2x = 98

x = 49

Answer:

Step-by-step explanation:

Thomas is 49 huilan is 54

Answer:

x = 15

Step-by-step explanation:

Assuming 3x and x-60 are in degrees, you can use:

cos(a) = sin(a+90)

To rewrite the equation as:

sin(3x) = sin(x-60+90)

sin(3x) = sin(x+30)

3x = x+30

2x = 30

x = 15

But, solving 3x = x+30 which simplifies to x=15 is not the only solution to this equation, as you can see in below picture. Finding all solutions is a bit more work, but maybe that is not required in your case.

Answer:

24

Step-by-step explanation:

Answer:

Two-Half Planes. Or, You can Call it a Boundary line.

Step-by-step explanation:

Answer:

half-planes or boundary region

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

because all diagonals are of the same lenght

answer: 3.8857

explanation:

Simplifying

-5k + 2.9 = -12k + 30.1

Reorder the terms:

2.9 + -5k = -12k + 30.1

Reorder the terms:

2.9 + -5k = 30.1 + -12k

Solving

2.9 + -5k = 30.1 + -12k

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '12k' to each side of the equation.

2.9 + -5k + 12k = 30.1 + -12k + 12k

Combine like terms: -5k + 12k = 7k

2.9 + 7k = 30.1 + -12k + 12k

Combine like terms: -12k + 12k = 0

2.9 + 7k = 30.1 + 0

2.9 + 7k = 30.1

Add '-2.9' to each side of the equation.

2.9 + -2.9 + 7k = 30.1 + -2.9

Combine like terms: 2.9 + -2.9 = 0.0

0.0 + 7k = 30.1 + -2.9

7k = 30.1 + -2.9

Combine like terms: 30.1 + -2.9 = 27.2

7k = 27.2

Divide each side by '7'.

k = 3.885714286

Simplifying

k = 3.885714286

hope this helped;))))

Answer:

it was $48

Step-by-step explanation:

$60X0.2

=$48

You welcome

Answer:

The number of 5-inch cuts if duct tape remainding is 14.

Step-by-step explanation:

1. 96 - 22.5 = 73.5

2.  73.5/5 = 14.7

3. .7 isnt a full piece of tape, so he has 14 5inch tapes

Answer:

-6

Steps:

solve for x=3

(3,5)

solve for X=7

(7,-19)

then find the slope using

[tex] \frac{y2 - y1}{x2 - x1} [/tex]

and it will be = -6

Answer:

its C

Step-by-step explanation:

ik

Answer:

D

Step-by-step explanation:

Since the total degrees of a circle is 360 and half of a circle is 180, 1/4 of a circle is 90 or less, D is the answer :)

Answer:

[tex]\displaystyle \frac{2(x + 3)}{5x - 2}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle \frac{2x^2 + 16x + 30}{5x^2 + 13x - 6}[/tex]

Step 2: Simplify

Answer:

In the equation y = mx + b for a straight line, the number m is called the slope of the line

Step-by-step explanation:

Answer: 3.1 or 3.10

Step-by-step explanation:

3 and 10 hundredths = 3 + 10/100 = 3 + 0.10

3.10 / 3.1

Answer:

7/100

Step-by-step explanation:

This is literally what the percent sign means: "per hundred".

Answer:

13.4%

Step-by-step explanation:

First year:

$10,000*6% = $600

New balance = $10,600

Second Year:

$10,600*7% = $742

$10,600+ $742 = $11,342

Total Return:

Final Balance - Initial balance

$11,342 - $10,000 = $1,342

$10,000*x ÷ $1,342

x = $1,342/$10,000

x = 0.1342

0.134 = 13.4%

Answer:

it's three hope it helps

Step-by-step explanation: