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3 years ago

50 POINTS !! PLEASE HELP ILL GIVE BRAINLIEST !!

Mathematics

2 answers:

dolphi86 [110]3 years ago

7 0

Answer:

The answer to your question is 3

Step-by-step explanation:

Colt1911 [192]3 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

Anyone know what is 7(8+x+2)

Komok [63]

Answer: 7x + 70

Step-by-step explanation:

6 0

2 years ago

Solve the system of equations 12x-5y=-20 y=x+4 x=_______ y=_______

pashok25 [27]

Answer:

x = 0

y = 4

Step-by-step explanation:

Given

12x - 5y = -20

y = x + 4

Substitute x + 4 for y in the first equation

12x - 5(x + 4) = -20

Expand the bracket

12x -5 X x - 5 x 4 = -20

12x - 5x - 20 = -20

7x - 20 = -20

Add 20 to both sides to eliminate -20 on the left side

7x - 20 + 20 = -20 + 20

7x = 0

Divide both sides by 7 to isolate x

7x/7 = 0/7

x = 0

Substitute 0 for x in either equation to get y

Using equation 2, we have

y = x + 4

= 0 + 4

= 4

x = 0

y = 4

3 0

2 years ago

To make 12 ounces of hot chocolate 3 tablespoons of cocoa are needed how many tablespoons of cocoa are needed to make 72 ounces

tiny-mole [99]

Answer:

you would need 18 tablespoons

Step-by-step explanation:

12--->72, so 3--->18

you are multiplying it by 6

6 0

3 years ago

Read 2 more answers

Select the correct answer.

zepelin [54]

Answer:

Answer is option c

Step-by-step explanation:

$given \: equations \: are \\ x - 2y = 15 \: \: and \: 2x + 4y = - 18 \\ divide \: by \: 2 \: in \: second \: equation \\ x + 2y = - 9 \: \: (equation \: 3) \\ adding \: 1and \: 3 \: we \: get \\ 2x = 6 \\ x = 3 \\ substitute \: x = 3 \: in \: equation \: 3 \\ 3 + 2y = - 9 \\ 2y = - 9 - 3 \\ 2y = - 12 \\ y = - 6$

x=3 and y=-6

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION. 

6 0

3 years ago

Read 2 more answers

Flip a coin three times. You will win $2 for each heads. What is the expected winning (expectation of your winning)

Romashka [77]

The three coins could land any these 8 ways:

HHH, HHT, HTH, HTT, THH, THT, TTH, TTT

P(3 heads) = 1 way out of 8 or 1/8

P(2 heads) = 3 ways out of 8 or 3/8

P(1 head) = 3 ways out of 8 or 3/8

P(0 heads) = 1 way out of 8 or 1/8

x=Winnings P(x) E(x)=x�P(x)

$3 1/8 $.375

$2 3/8 $.75

$1 3/8 $.375

-$10 1/8 -$1.25

---------------------------

Total expectation = $ .25

7 0

2 years ago