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galina1969 [7]
3 years ago
5

What is the value of the expression below ?-0.25-(3/5)+0.6+(-1/4)

Mathematics
1 answer:
bagirrra123 [75]3 years ago
4 0
I believe the answe is -0.5
Hope this helps :)
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What is the length of side BC of the triangle? explain how you did it please.
frozen [14]
I hope this helps you

3 0
3 years ago
Two urns both contain green balls and red balls. Urn I contains 6 green balls and 4 red balls and Urn II contains 8 green balls
34kurt

Presumably, whatever is drawn from Urn I is independent of what is drawn from Urn II. This means

P(\text{red from Urn 1 AND red from Urn 2})=P(\text{red from Urn 1})\cdot P(\text{red from Urn 2})

We have

P(\text{red from Urn 1})=\dfrac4{10}=\dfrac25

P(\text{red from Urn 1})=\dfrac7{15}

so the probability of drawing red balls from both urns is \dfrac25\cdot\dfrac7{15}=\dfrac{14}{75}

3 0
3 years ago
Is 5.78778778 a rational or irrational number? Explain
Bumek [7]
Hello There!

It is rational as it can be written as a fraction and had a pattern to it.

Hope This Helps You!
Good Luck :)
6 0
3 years ago
Calculate the mean given the frequency table
ratelena [41]

Answer:

15.6

Step-by-step explanation:

First, multiply the midpoint of each class by its frequency, as follows:

            Class      midpoint   frequency   midpoint*frequency  

            0-9         4.5             24                4.5*24 = 108

            10-19      14.5            20                14.5*20 = 290

            20-29    24.5           32                24.5*32 = 784

Total                                      76               1182

The mean is computed as the division between the addition of the "midpoint*frequency" column by the addition of "frequency" column.

mean = 1182/76 ≈ 15.6

 

5 0
3 years ago
a prayng mantis is an interesting insect that can rotate its head 180 degrees.Suppose the praying mantis at the right is 10.5 ce
cricket20 [7]
The fact that it can turn its head 180 degrees is just extra information. They tell us that it is 10.5 cm long. What they're asking for is the length in a mixed number, so 10.5 as a mixed number.
7 0
3 years ago
Read 2 more answers
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