3 years ago

Perform the indicated operation. (-9 + 21) - (-12 + 4) =

Mathematics

1 answer:

Trava [24]3 years ago

6 0

Answer:

Step-by-step explanation:

-9+21= 21

-12+4=-8

21-(-8)=29

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erastova [34]

60% is your answer. Good luck!!

7 0

3 years ago

Can someone please help me help me pls

lord [1]

This is easy onystly I think you should do it your self but the answer is number b

8 0

3 years ago

NEED HELP ASAP!!!!!!!!!!!

Arte-miy333 [17]

Answer:

Step-by-step explanation:

Let the no of cars be x and no of buses be y.

x + y = 60 -> y = 60 - x

6x + 30y = 600

with the available equations let us calculate the values of x and y.

6x + 30 * (60-x) = 600

6x + 1800 - 30x = 600

24x = 1200

x cars = 50

y buses = 10

maximum profit = 50 * 2.5 + 10 * 7.5 = $200

5 0

3 years ago

A bag of marbles has 3 red, 4 blue, and 5 white marbles in it. What is the probability of reaching in and selecting a blue marbl

goblinko [34]

Answer:

$P(B)=\frac{1}{3}$

Step-by-step explanation:

The number of red marbles in the bag is; $n(R)=3$ .

The number of blue marbles in the bag is; $n(B)=4$ .

The number of white marbles in the bag is; $n(W)=5$ .

The total number of marbles in the bag is: $n(S)=3+4+5=12$ .

The probability of selecting a blue marble is $P(B)=\frac{n(B)}{n(S)}$

We substitute the given information to obtain:

$P(B)=\frac{4}{12}$

We simplify to obtain:

$P(B)=\frac{1}{3}$

4 0

3 years ago

Allison counted 56 cars parked in the lot. Eight parking spaces remained empty Plan, solve, and check to find the ratio of empty

Alexeev081 [22]

The ratio is 1:8 for empty to full.

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3 years ago