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Aliun [14]
3 years ago
15

Pls help me with My math I need the ans rn, Tysm.​

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0

Answer:

35 degrees

30 degrees

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Pleaseeee help meeeee
Veseljchak [2.6K]

Answer:

x=-8

Step-by-step explanation:

1) remove the constant(number without variable) to do this, we must use the opposite operation(in our case, subtraction)

so

4x+1=-31

a) 4x+1-1=-31-1

4x=-32

b) remove the coefficient by doing the opposite operation(division in our case)

x=-8

7 0
3 years ago
3. Suppose that you draw two cards from a standard 52 card deck. You replace the first card and shuffle thoroughly before you dr
Kruka [31]

Answer:

\text{a)} \frac{1}{17} \text{b)} \frac{1}{221}\text{c)}\frac{12}{13}\text{d)}\frac{188}{221}

Step-by-step explanation:

GIVEN: You draw two cards from a standard 52 card deck. You replace the first card and shuffle thoroughly before you draw the second.

TO FIND: a) What is the probability that the first card is 7 b) What is the probability that both cards are

SOLUTION:

Let \text{A} and \text{B} be two events such that

\text{A}=\text{first card drawn is 7}

\text{B}=\text{Second card is 7}

\text{probability that first card is 7 =P(A)}

<h3> \text{P(A)}=\frac{\text{total 7 numbered cards}}{\text{total cards in deck}}</h3><h3> \text{P(A)}= \frac{4}{52}=\frac{1}{13}</h3>

a)

      \text{probability that first card is 7 =P(A)}

<h3>      \text{P(A)}=\frac{1}{13} </h3>

b)

     \text{probability that both cards are 7}=\text{first card is 7}\times\text{second card is 7}

     \text{probability that both cards are 7}=\text{P(A).P(B)}

     \text{P(B)}=\frac{\text{total number of 7 numbered cards left}}{\text{total number of cards in deck left}}

     \text{P(B)}=\frac{3}{51}=\frac{1}{17}    

     \text{probability that both cards are 7}=\frac{1}{13}\times\frac{1}{17}

     \text{probability that both cards are 7}=\frac{1}{221}

c)

    \text{probability that first card is not 7}=1-\text{probability that first card is 7}

    \text{probability that first card is not 7}=1-\text{P(A)}

    \text{probability that first card is not 7}=1-\frac{1}{13}

    \text{probability that first card is not 7}=\frac{12}{13}

d)

 \text{probability that both cards are not 7}=(\text{first card is not 7}).(\text{second card is not 7})

    \text{probability that both cards are not 7}=\text{[1-P(A)].[1-P(B)]}

    \text{P(B)}=\frac{\text{total 7 numbered cards}}{\text{total cards left in deck}}

    \text{probability that both cards are not 7}=(1-\frac{1}{13})\times(1-\frac{4}{51})

    \text{probability that both cards are not 7}=\frac{12}{13}\times\frac{47}{51}

 

     

8 0
3 years ago
Use the box method to distribute and simplify (-3x-6)(-2x-2)
erastova [34]

Answer:

6x²+18x+12

Step-by-step explanation:

(-3x-6)(-2x-2)

=-3x(-2x-2)-6(-2x-2)

=6x²+6x+12x+12

=6x²+18x+12

7 0
3 years ago
Jenny has been saving quarters in a piggy bank since she was born. She currently has 192 quarters in her piggy bank. She decides
Mrac [35]

Answer:

D) She has a total of $62 in the piggy bank.

Step-by-step explanation:

Jenny has been saving quarters in a piggy bank since she was born.

She decides to add 56 more quarters so that she can buy a $65 phone.

So she has 192 + 56 = 248 quarters currently.

1 quarter is equivalent to $0.25

248 quarters equals;

\frac{248}{1} × $0.25 = $62

So Jenny has a total of $62 in the piggy bank.

5 0
3 years ago
Find an equation in slope-intercept form of the line that has slope 9 and passes through point A(-9, -1).
Step2247 [10]

Answer:

y = 9x+80

Step-by-step explanation:

We can use the slope intercept form of a line

y = mx+b where m is the slope and b is the y intercept

y = 9x+b

Substitute the point in for x and y

-1 = 9(-9) +b

-1 = -81 +b

Add 81 to each side

-1+81 = b

80 =b

The equation is y = 9x+80

3 0
3 years ago
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