2 years ago

Which problem could be solved by evaluating the expression 7 x (-3)?

Mathematics

2 answers:

Tasya [4]2 years ago

6 0

Answer:

The answer is -21

Step-by-step explanation:

To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)

NNADVOKAT [17]2 years ago

5 0

Answer:

C: A cold front comes in and causes the temperature to drop 3 degrees every hour. What is the change in temperature after 7 hours?

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Find the slope of the line that passes through (80, 300) and (70, 500).

olga2289 [7]

Answer:

m = -20

Step-by-step explanation:

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2 years ago

A box has 1 red marble, 3 blue marbles, and 4 green marbles. Maya draws a blue marble randomly from the box, replaces it, and th

allochka39001 [22]

Answer:

$\dfrac{9}{64}$

Step-by-step explanation:

Sampling with replacement means that we choose a marble, note its colour, put it back and shake the box, then choose a marble again.

There are $1+3+4=8$ marbles in total. The probability that the first chosen marble is blue is $\dfrac{3}{8}.$ then Maya replaces this marble and the probability of choosing the second blue marble is the same. Using the product rule, the probability of drawing 2 blue marbles in a row is