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Sever21 [200]
2 years ago
9

Simplify the expression: 7r–3r+9r

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
8 0

Answer:

13r

Step-by-step explanation:

all like variables so add the coefficient

7+(-3)+9

7-3+9

13

=13r

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Answer:

the angle of elevation is 2 because it is going up

Step-by-step explanation:

there really isn't an explanation needed

5 0
3 years ago
The price of one gallon of milk has increased from $3.24 to $4.05. What us the percentage in increase?
dalvyx [7]
The percentage increase is 25%


8 0
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1. Michelle Obama helped design the 3,520 - piece china set that was used
devlian [24]

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Step-by-step explanation:

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5 0
3 years ago
Find the value of xxx in the triangle shown below.
Ganezh [65]

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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Of the cartons produced by a company, 5% have a puncture, 8% have a smashed corner, and 0.4% have both a puncture and a smashed
Vladimir [108]

The probability that a randomly selected carton has a puncture or a smashed corner is 12.6%.

In this problem, the events are:

Event A: Puncture.

Event B: Smashed corner.

The "or" probability is given by:

P(AUB)=P(A)+P(B)-P(A∩B)

5% have a​ puncture, hence P(A)=0.05

8% have a smashed​ corner, hence P(B)=0.08

0.4% have both a puncture and a smashed corner, henceP(AUB)=0.004

Then:

P(AUB)=0.05+0.08-0.004= 0.126

Therefore, The probability that a randomly selected carton has a puncture or a smashed corner is 12.6%.

Learn more about probability here brainly.com/question/20344684

#SPJ4

5 0
1 year ago
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