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andrew11 [14]
3 years ago
10

Where can we put parenthesis in 21 + 21 divided by 7 to make it equivalent to 6?

Mathematics
2 answers:
timurjin [86]3 years ago
7 0

Answer:

1.) \frac{(21+21)}{7}

2.)(\frac{21+21}{7} )

Step-by-step explanation:

\frac{21+21}{7}

If you just solve it like this, you get 6.

So, the parenthesis would go on the whole thing, or where 21+21 is.

1.) \frac{(21+21)}{7}

2.)(\frac{21+21}{7} )

DiKsa [7]3 years ago
4 0

(21+21)÷7

Step-by-step explanation:

21+21=42 42÷7=6 I'm not good at explaining lol

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Step-by-step explanation:

(X+2)(x-3)4211334433434

8 0
3 years ago
Please help me with this !!
Sergio [31]

Answer: AC = 7√3

tan 30° = \frac{BC}{AC}

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Step-by-step explanation:

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Please help me write an equation.
vekshin1

Answer:

k=6

Step-by-step explanation:

Line partition formula

1/b(x2-x1)+x1, 1/b(y2-y1)+y1

Where b is the number partitions.

We know the x values so Subsitue 17 for x2 and 2 for x1. and we know this value must equal 7.

1/b(17-2)+2=7

1/b(15)=5

1/b=1/3

b=3

so the partition is 1/3

\frac{1}{3} (17 - 2) + 2 = 7

So let find the y coordinate

\frac{1}{3} (8 - 5) + 5 = 6

So our y coordinate is 6.

4 0
2 years ago
After flying between two black holes, our engines have been a bit janky. The probability of one of any of our 8 power couplings
otez555 [7]

Answer:

Step-by-step explanation:

We would apply the formula for binomial distribution. It is expressed as

P(x = r) = nCr × q^(n - r) × p^r

Where

p represents probability of success

q represents probability of failure.

n represents number of sample.

From the information given,

p = 10% = 10/100 = 0.1

q = 1 - q = 1 - 0.1 = 0.9

n = 8

1)The probability that none fails is

P(x = 0) = 8C0 × 0.9^(8 - 0) × 0.1^0

P(x = 0) = 0.43

2) The probability that one fails is

P(x = 1) = 8C1 × 0.9^(8 - 1) × 0.1^1

P(x = 1) = 0.38

3) The probability that four fails is

P(x = 4) = 8C4 × 0.9^(8 - 4) × 0.1^4

P(x = 4) = 0.0046

3) The probability that six fails is

P(x = 6) = 8C6 × 0.9^(8 - 6) × 0.1^6

P(x = 6) = 0.00002268

4) The probability that eight fails is

P(x = 8) = 8C8 × 0.1^(8 - 8) × 0.1^8

P(x = 8) = 0.00000001

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2 years ago
What is the circumference of a 45 m circle
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<span>to solve circumference of a circle is diameter times pi.
C=141.3 cm</span>
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