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3 years ago

I will mark brainliest

Mathematics

1 answer:

9966 [12]3 years ago

4 0

Answer:

Step-by-step explanation:

option c vertical BC it goes right through with the same amount on both sides

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What is the probability of tossing two fair coins and having exactly one land tails side up?

Pavlova-9 [17]

The answer will be 1/2 because in a coin there is heads and tails. So, its 50% chance to get either one. Now, for 2 coins there will be heads, tails, head, and tails. The question ask you for tails so there are 2 ways to get tails. Also, the total of the two coins to get either heads or tail is 4. You should get 2/4 which is 1/2.

8 0

3 years ago

Express the recurring decimal 0.142 recurring as a fraction in its simplest form.

kupik [55]

Answer:

7/165

Step-by-step explanation:

We take number after the decimal point 042

then we subtract the non repeating.In this case is 0 so we not subtract anything

This will be the numerator 42

For each repeating decimal we write a 9 (in this case 2 nines)

For each non repeating decimal we write a zero

Denominator is 990

42/990 = 7/165

7:165 = 0.0424242

I think this is what you do. Hope it helps!

5 0

3 years ago

Solve the systems of equations 9x+5y=41 and x+y=9 by combining the equations

Sholpan [36]

Step-by-step explanation:

multiplying the 2nd eqn by 9 we get,

9x+9y=81

then,subtracting 1st and 2nd eqn

9x+5y=41

9x+9y=81

- - -

__________

0. -4y=-40

we get y = 10

then we get x=9-y

x=9-10

x= -1

so x is -1 and y is 10

3 0

3 years ago

Laura babysat 8 nights during the month of July. She earned $22, $30, $35, $25, $25, $20, and $27 for seven nights. How much did

Svet_ta [14]

Answer:

$28

Step-by-step explanation:

Given:

data = [22,30,35,25,25,20,27]

For eight night, the new list is:

new_data = [22,30,35,25,25,20,27,x]

Mean = 26.50

Mean Formula:

$\displaystyle \large{m=\dfrac{x_1+x_2+x_3+...+x_n}{n} }$

Therefore:

$\displaystyle \large{26.50=\dfrac{22+30+35+25+25+20+27+x}{8}}$

Multiply both sides by 8:

$\displaystyle \large{26.50\cdot 8=\dfrac{22+30+35+25+25+20+27+x}{8} \cdot 8}\\\displaystyle \large{212=22+30+35+25+25+20+27+x}$

Solve for x:

$\displaystyle \large{212=22+30+35+25+25+20+27+x}\\\displaystyle \large{212=184+x}$

Subtract 184 both sides:

$\displaystyle \large{212-184=184+x-184}\\\displaystyle \large{28=x}$

Therefore, she will earn $28 in eighth night

The attachment below is the result of combining all eighth data as we get 26.5 through python language with numpy package.

7 0

2 years ago

Read 2 more answers

If each person takes up 2.5 square feet of space, how many people can fit in an elevator that is 8 feet by 6 feet? Round to the

Veronika [31]

First you would want to get the area of the elevator
To get that you would multiply 8x6=48
So now since each person takes 2.5 square feet you would divide 48 by 2.5
48/2.5=19.2
19.2 rounded to the nearest whole number is 19
Your final answer is 19..

7 0

4 years ago