Giving brainlist to who ever answers this

Answer:

see explanation

Step-by-step explanation:

Sami's error is in the second line of working

2x = 6x - 4  ← correct substitution ( subtract 6x from both sides, Sami has added 6x )

- 4x = - 4 ← correct second line ( divide both sides by - 4 )

x = 1

Substitute x = 1 into either of the 2 equations and evaluate for y

Substituting into the second equation

y = 2x = 2(1) = 2

solution is (1, 2 )

Answer:

1/8

Step-by-step explanation:

The probability of getting tails on a single flip is 1/2.

Each of the flips is an independent event so you must multiply the probability of getting tails on each flip together.

So, your answer will look like this

[tex]\frac{1}{2}[/tex] x [tex]\frac{1}{2}[/tex] x [tex]\frac{1}{2}[/tex] ; which equals;

1/8

Answer:

1/8

Step-by-step explanation:

To calculate the probability you have to name all possible results first. If you mark a result of a single coin flip as  H  for heads or  T  for tails all results of  3  flips can be written as:

Ω = { ( H , H , H ) , ( H , H , T ) , ( H , T , H) , ( H , T , T ) , ( T , H , H ) , ( T , H , T ) , ( T ,T , H ) , ( T , T , T ) }

Each triplet contains results on  1st,  2 nd and  3 rd coin. So you can see that in total there are  8  elementary events in  Ω.

| Ω |  =  8

Now we have to define event  A  of getting tails three times.

The only elementary event which satisfies this condition is  ( T , T , T )  so we can write that:

A  =  { ( T, T , T ) }

| A |  =  1

Now according to the (classic) definition of probability we can write, that:

P ( A )  =  | A|/  | Ω |  =  1 /8

So finally we can write the answer:

The Probability of getting 3 tails in 3 coin flips is  1 /8 .

Answer:

The slope is 2

The y-intercept is 3

The equation is y = 2x +3

Step-by-step explanation:

The equation goes up 2 squares and over 1 square. 2/1 = 2

For y-intercept, look at the y-axis

The equation is supposed to be written as y = mx + b

m being the slope and b being the y-intercept.

Answer:

Constant - A symbol having a fixed numerical value.

Proportionality - Equality between two ratios.

Answer:

6

Step-by-step explanation:

i hope its right and if not im sorry im not good with math

the domain of the function graphed above of

F,IF,B,5

Answer: 909.0

Answer:

B

Step-by-step explanation:

Answer:

Step-by-step explanation:

x = 20

Answer:

20

Step-by-step Explanation:

Answer:

A, B, E

Step-by-step explanation:

Answer:

The amount of money raised

Step-by-step explanation:

The amount of basket balls depends on the money rasied and is therefore dependant, that leaves the money, which is completely independent.

The amount of the money that they've raised.

A = 8

B = 7

C = -3

D = 6

E = 1

F = 2

Code: 2 (7 + 6) + 8 [1 -(-3)]

Code: 2 (7 + 6) + 8 (1 + 3)

Step-by-step explanation:

7.B

8.C

9.A

10.D

.......

Answer:

x = 4

Step-by-step explanation:

1. Write the equation

3/4x = 2x - 5

2. Get the variables on the same side

Let's subtract 2x! Now, since math is a veryyy jealous subject, you're going to do it on the other side too!

-1.25x = -5

3. Divide both sides by -1.25

x = 4

Thank you for the points!!!

Answer: $2200 is sold on sale for $1950.

Step-by-step explanation:

Answer:

21.98

Step-by-step explanation:

Answer: 34.54feet

Step-by-step explanation:

Thw circumference of the pool will be calculated by using the formula:

= 2πr

where

π = 3.14

r = 5.5

Therefore, circumference = 2πr

= 2 × 3.14 × 5.5

= 34.54feet

Therefore, the circumference of the pool to the nearest hundredth is 34.54feet.

Answer:

x = -3

Step-by-step explanation:

The vertex lies on the axis of symmetry, whose x-coordinate is halfway between -9 and 3:  x = -3

Answer:

43

Step-by-step explanation:

Answer:

see photo below

Step-by-step explanation:

This actual has a photo attached not a link

Answer:

25.64 in² per slice

Step-by-step explanation:

14 diameter = 7 radius

area of whole = π7² = 153.86 in²

153.86/6 = 25.64 in²

Answer:

the greatest common factor is 3

Answer:

8km

Step-by-step explanation:

The three points form a right-angled triangle with 15km as the height and 17km as the hypotenuse.

To find the distance between Lowell and the port which is the base use the pythagorean theorem.

=√17² - 15²

=8km

Answer: 150 cm2

Step-by-step explanation:

60x5 divided by 2 its pretty easy.

Answer:

180 in^2

Step-by-step explanation:

to find the height you need to look at the triangle and apply pythagorean theorem

5^2=x^2=13^2

25+x^2=169

x^2=144

x=12

now we can find the area of the parallelogram:

b*h=area

15*12=180 in^2

The area of the parallelogram is 180 in^2

Answer:

1A. acute. all of the angles are under 90%. acute is under 90%, right is 90%, and obtuse is over 90%

2A. scalene. isosceles is all sides are the same length, and equilateral is all sides are the same length AND all the angles are 60%. with scalene all sides can be different lengths, and angles can be different

3. no. the rule for making a triangle is that any 2 sides added up, must be more than the 3rd side. so 6+2, 6+4 work, but 2+4 is 6, which is not greater than 6, the third side

Step-by-step explanation:

Answer:

A=82

C=83

X+y=60

X=30+50+80

X=80

Answer:

The answer is y= -50x + 725 so (D)

Step-by-step explanation:

Itś not gone be D on yall side s, make sure yall pay attention to the answer choices before you put

Answer:

B (the second one)

Step-by-step explanation:

The thin yellow line in A only goes from 14-30. However, the correct numbers listed range from 12-30. Line B matches up with this data

Answer:

Twoja odpowiedź brzmi 23401.

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