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3 years ago

8

Permutations and Combinations : wake up cereal comes in 2 types, crispy and crunchy. If a researcher has 10 boxes of each, how m

any ways can he select three boxes of each for a quality control test?

1 answer:

pantera1 [17]3 years ago

6 0

Answer:

I'm pretty sure theres 11 ways

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Describe how (2 ^ 3)(2 ^ - 4) can be simplified . Multiply the bases and add the exponents. Then find the reciprocal and change

tigry1 [53]

Answer:

Add the exponents and keep the same base Then find the reciprocal and change the sign of the exponent .

Step-by-step explanation:

Given the expression (2^3)(2^- 4), we will apply the law of indices below to solve the equation;

$a^m \times a^n = a^{m+n}\\a^{-m} =\frac{1}{a^m}$

Applying this on the given expression;

$(2 ^ 3)(2 ^{-4})$

Step 1: Add the exponents and keep the same base as shown;

$= (2 ^ 3)(2 ^{-4})\\\\= 2^{3+(-4)}\\\\ = 2^{3-4}\\\\= 2^{-1}$

Step 2: Find the reciprocal and change the sign of the exponent

$= 2^{-1} \\= \frac{1}{2^1}\\= \frac{1}{2}$

4 0

3 years ago

I need help with 23 and 21 please it’s due today!

azamat

Answer:

21 is A and 23 is D

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A parallelogram with a base of x units and a height of y units is changed

suter [353]

Answer:

868 (third option)

Step-by-step explanation:

we know that the area of original is $xy=31$ .

the new parallelogram will has area $4x\times 7y = 28xy=28\times 31=868$

6 0

3 years ago

Can somebody help me with this please!!

saul85 [17]

1. -21

2. −39

3.−42

4. -5

5. −3

for the other question u can use calculator :)

8 0

2 years ago

Simplify<br> -6 + 2a + 1 + 2a

sveta [45]

Answer:

- 5 + 4a

Step-by-step explanation:

- 6 + 2a + 1 + 2a

- 6 + 1 + 4a

- 5 + 4a

6 0

3 years ago