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just olya [345]
3 years ago
9

What is the value of the expression below? (3 1/2 - 9 3/4) ÷ (-2.5)

Mathematics
1 answer:
Alexandra [31]3 years ago
5 0

Answer:

2.5

Step-by-step explanation:

3 1/2 - 9 3/4 =

3 2/4 - 9 3/4 = -6 1/4

-6 1/4 = -6.25 ÷ (-2.5) = 2.5

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Systems of Linear Equations with Infinitely Many Solutions
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4 years ago
If a man take one and a half mins to paint a door how much doors can he paint in seven half hour
sashaice [31]

Answer:

300 doors.

Step-by-step explanation:

1.5 minutes for 1 door.

7.5 hours for 300 doors.

7.5 hours = 450 minutes.

\frac{450}{1.5}=300

7 0
3 years ago
Please help ASAP it’s due in a few minutes
grigory [225]

Answer: l think it's none of the others

Step-by-step explanation:

7 0
4 years ago
A used car dealer has 30 cars and 10 of them are lemons (i.e.~ mechanically faulty used cars), and you don't know which is which
Triss [41]

Answer: Hence, the probability that he will get at least one lemon is 0.70.

Step-by-step explanation:

Since we have given that

Number of cars = 30

Number of lemon cars = 10

Number of other than lemon cars = 30-10 = 20

According to question, he bought 3 cars,

we need to find the probability that you will get at least one lemon.

So, P(X≤1)=1-P(X=0)=1-P(no lemon)

Here, P(no lemon ) is given by

\dfrac{20}{30}\times \dfrac{20}{30}\times \dfrac{20}{30}=(\dfrac{20}{30})^3

so, it becomes,

P(X\geq 1)=1-(\dfrac{20}{30})^3=1-(0.67)^3=0.70

Hence, the probability that he will get at least one lemon is 0.70.

5 0
3 years ago
Then,fill in the blank to add these numbers below
Aleksandr [31]

Answer:

the 1st number line and 29

Step-by-step explanation:

The second one starts at 21 and takes away which gives 13. which isnt the answer. When adding numbers, you go forward

3 0
3 years ago
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