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irina1246 [14]
3 years ago
13

write an expression to model the following situation: when rafa woke up, the temperature was –9°c. by noon, the temperature had

increased by 7°c. what was the temperature at noon? a. –9 – 7 b. 9 7 c. –9 7 d. 9 – 7
Mathematics
1 answer:
Julli [10]3 years ago
7 0
The answer is -9+7 because it INCREASED which means adding ( + ).
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Use the figure to find n please.
ira [324]

Answer:

n = 5

Step-by-step explanation:

Since this is a right triangle, we can use trig

tan theta = opp /adj

tan 30 = n / 5 sqrt(3)

5 sqrt(3) tan 30 = n

5 sqrt(3) * 1/ sqrt(3) = n

5 = n

4 0
2 years ago
Read 2 more answers
5-52: the first card selected from a standard 52-card deck is a king. a. if it is returned to the deck, what is the probability
Ksivusya [100]

Calculating the likelihood of experiments happening is one of the branches of mathematics known as probability.

The probability of getting a king card is 1/13 or 0.077.

<h3>What is meant by probability?</h3>

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

Given: Total number of probability - 52

Now, the first selected card is king and it is returned to the deck.

So it contains no effect on the second selection card.

Then, we have to estimate probability to obtain a king

probability = favourable outcomes for a king / total possible outcomess

= 4 king cards / 52 cards in total

= 4 / 52 = 1 / 13

The probability of getting a king card is 1 / 13 or 0.077

Therefore, the correct answer is option B. 1/13, or 0.077.

The complete question is:

The first card selected from a standard 52-card deck was a king. It isreturned to the deck, what is the probability that a king will be drawn on the second selection?

A. 1/4 or 0.25

B. 1/13, or 0.077

C. 12/13, or 0.923

D. 1/3 or 0.33

E. None of the above​

To learn more about probability refer to:

brainly.com/question/13604758

#SPJ4

5 0
9 months ago
Pls help me with this:((​
BlackZzzverrR [31]

Answer:

9. A. One - to - One Correspondence

10. D. None of the above

5 0
2 years ago
Read 2 more answers
What is y – 3 = 7 (x – 5) in standard form?
yuradex [85]

Answer:

38=7x-y

Step-by-step explanation:

standard form= Ax+By+C

(y-3=7(x-5))

(y-3=7x-35)+3 to both sides

(y=7x-38) +38 to both sides

(y+38=7x) -y to both sides

38=7x-y

you have to move the 38 and y because if you moved the x value, than A becomes negative and it can't be in standard form

8 0
2 years ago
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Help please !!!!!!???
Alona [7]

Answer:

hiiiiiiiii

Step-by-step explanation:

3 0
2 years ago
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