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s344n2d4d5 [400]
4 years ago
9

Write an algebraic expression equivalent to 9x + 20 using only the commutative property of addition.

Mathematics
1 answer:
shusha [124]4 years ago
8 0
20+9x
The commutative property allows us to switch the numbers around and get the same answer
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HELP QUICK DUE TODAY
Scilla [17]
Area = S^2

S(S-3) =70

S^2 -3S = 70
S^2 - 3s-70 = 0

(s-10) (s+7) = 0

s = 10, s=-7

S=10

original dimension was 10cm x 10cm


3 0
3 years ago
Do you know the answer ??
bazaltina [42]

Answer: The answer is 6

7 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
A ladder leans up against the side of a house. The ladder is 5 m tall. If the foot of the ladder is 1 m from the side of the hou
USPshnik [31]

Answer:

= 2√6

Step-by-step explanation:

a² + b² = c²

1 + b² = 25

b² = 24

b = ±√24

b = ±2√6

We can forget about the minus answer because you cannot have a negative length. That does not make sense.

Please mark me brainliest.

7 0
3 years ago
So me and my friend were arguing about this earlier. Say that you bought a raffle ticket for $1 and the prize is $512. If you wo
allsm [11]

Answer: %512 increase.

Step-by-step explanation:

Soooo if you had $1 and the prize was $512, then youd be making $512 (because you lost/invested the $1), It would be a 512% increase. Now, if it was $51,200 youd win, then yes it would be a 51,200%, but its only $512.

7 0
3 years ago
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