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Softa [21]
3 years ago
14

The operation of addition is closed for the set of all integers. True or False?

Mathematics
1 answer:
shusha [124]3 years ago
4 0
This is a true statement! thank you!
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Write. the ratio 4/9÷5/9 in simpil
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4/9*9/5 you have to reciprocate the 5/9 since you want to change division to multiplication.
So 36/45 is the answer
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4 years ago
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joseph's cell phone service charges him $0.15 per text. write an equation that represents the cost of c of his cell phone servic
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C=$0.15T say he has 10 texts you replace the t with the ten, so $0.15 • 10= $1.5
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3 years ago
Special right triangle
Karo-lina-s [1.5K]

Answer:

Step-by-step explanation:

6) taking 45 degrees as the reference angle,

the adjacent side is √6

The opposite side is x

The hypotenuse is y

Therefore, we would apply trigonometric ratio.

Tan # = opposite side / adjacent side

Tan 45 = x/√6

1 = x/√6

x = 1 × √6 = √6

Cos # = adjacent side/hypotenuse

Cos 45 = √6/y

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5 0
3 years ago
An aircraft seam requires 24 rivets. The seam will have to be reworked if any of these rivets are defective. Suppose rivets are
kirill [66]

Answer:

Step-by-step explanation:

a)

p(d) - probability of a rivet being defective

p(r) - probability of seam needing to be reworked

The probability of the seem needing to be reworked is equal to the probability that ANY of 24 rivets is defective

Thus the probability that none of the 25 rivets is defective is 1-p(r)

p(r) = 16%, thus 1-p(r) = 84%

1-p(r) = (1-p(d))^24

0.84 = (1-p(d))^24

0.84^(1/24) = 1-p(d)

==> 1-p(d) = 0.9927615998

==> p(d) = 1-0.9927

==> p(d) = 0.0073

b) given p(r) = 8%, thus 1-p(r) = 92%

1-p(r) = (1-p(d))^24

0.92 = (1-p(d))^24

0.92^(1/24) = 1-p(d)

==> 1-p(d) = 0.99653179446

==> p(d) = 1-0.9965

==> p(d) = 0.0035

5 0
3 years ago
Dara has to solve 35 math problems for homework. She has completed 14 of them.what fraction of the problems does she have left t
RSB [31]

Answer: 3/5

Step-by-step explanation: thats your answer.

6 0
3 years ago
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