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Tems11 [23]
3 years ago
9

SOMEONE PLEASE HELP ME.

Mathematics
1 answer:
dimaraw [331]3 years ago
3 0
Probability is like 50% or 1/2 like If you flip a coin the probability is 1/2,
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Factor: m^2 - 20m - 21
Anton [14]

Answer: (m-21)(m+1)

Step-by-step explanation:

To factor this trinomial, find two numbers that multiply to -21 and add to -20:

(-21)(1)=-21

-21+1=-20

They are -21 and 1.

Add -21 and 1 to m to get both factors:

(m+(-21)) and (m+1)

(m-21) and (m+1)

Multiply them to get the answer:

(m-21)(m+1)

4 0
2 years ago
A family of five people has $200 to spend on fishing rods and fishing licenses. They spend a total of $20 on licenses. Assuming
dusya [7]

Answer:

36

Step-by-step explanation:

200-20=180

180/5=36

8 0
3 years ago
Read 2 more answers
Please help me I don’t understand it’s number 2<br> 2. Select all the pairs that are<br> equivalent.
kenny6666 [7]
Answers 3 and 4! since there is a negative power, that’s the only time the 0’s are added to the front :)
6 0
2 years ago
Tomas wrote the equation y = 3x +y equals 3 x plus StartFraction 3 over 4 EndFraction.. When Sandra wrote her equation, they dis
BaLLatris [955]

Answer:

-6x+2y=\frac{3}{2}

Step-by-step explanation:

The equation Thomas wrote is:

y=3x+\frac{3}{4} ...equation 1

Let us subtract 3x from both sides to get:

-3x+y=\frac{3}{4}

We now multiply through by 2 to get:

-6x+2y=\frac{3}{2} ....equation 2

We can see that equation one and two are equivalent and hence have the same solution.

Therefore Sandra's equation is -6x+2y=\frac{3}{2}

6 0
3 years ago
Read 2 more answers
In a survey, of the voters support a particular referendum. If 40 voters are chosen at random, find the mean and variance for th
Katyanochek1 [597]

This question is incomplete, the complete question is;

In a survey, 55% of the voters support a particular referendum. If 40 voters are chosen at random,

find the mean and variance for the number of voters who support the referendum.

Answer:

a) The Mean is 22

b) Variance is 9.9

Step-by-step explanation:

Given that;

55% of the voters support a particular referendum p = 0.55

q = 1 - p = 1 - 0.55 = 0.45

sample size n = 40

a)

Mean = sample size n × p

Mean = 40 × 0.55

Mean = 22

Therefore the Mean is 22

b)

Variance = n × p × q

so we substitute

Variance = 40 × 0.55 × 0.45

Variance = 9.9

Therefore the Variance is 9.9

3 0
3 years ago
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