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ValentinkaMS [17]

3 years ago

13

I am a parent, i am trying to put together some math notes for my son. He is allowed to use them for the unit 2 math test for 6t

h grade

1 answer:

yuradex [85]3 years ago

5 0

Ok so what can we at Brainly do for you ?

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PLEASE HELP ME PLEASE

SCORPION-xisa [38]

Answer:

5

Step-by-step explanation:

3 0

2 years ago

<img src="https://tex.z-dn.net/?f=%28%20-4%20-%20%20%5Csqrt%7B%20-%206%29%20%7B%3F%7D%5E%7B2%7D%20%7D%20" id="TexFormula1" title

DerKrebs [107]

$\bf -4-\sqrt{(-6)^2}\implies -4-(-6)\implies \stackrel{\textit{recall minus times minus is \underline{plus}}}{-4+6\implies 2}$

3 0

3 years ago

A group of 8 friends (5 girls and 3 boys) plans to watch a movie, but they have only 5 tickets. If they randomly decide who will

Eddi Din [679]

Answer:

D. 0.821

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The combinations formula is important to solve this question:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes

The order is not important. For example, Elisa, Laura and Roze is the same outcome as Roze, Elisa and Laura. This is why we use the combinations formula.

At least 3 girls.

3 girls

3 girls from a set of 5 and 2 boys from a set of 3. So

$C_{5,3}*C_{3,2} = 30$

4 girls

4 girls from a set of 5 and 1 boy from a set of 3. So

$C_{5,4}*C_{3,1} = 15$

5 girls

5 girls from a set of 5

$C_{5,5} = 1$

$D = 30+15+1 = 46$

Total outcomes

5 from a set of 8. So

$T = C_{8,5} = 56$

Probability

$P = \frac{D}{T} = \frac{46}{56} = 0.821$

So the correct answer is:

D. 0.821

6 0

3 years ago

Read 2 more answers

How can -6.75+(10.25) be expressed as the sum of its integer and decimal parts

Bess [88]

Answer:

4 + - 0.50 = 3.50

Step-by-step explanation:

-6 +10 = 4

-0.75 + 0.25 = - 0.50

7 0

3 years ago

Question 11 options:

Lana71 [14]

Answer:

112

Step-by-step explanation:

The volume is 448 $cm^{3}$

You are asked to dilate it to a scale factor of 1/4

All you are doing is multiplying: 448/1 × 1/4

7 0

3 years ago