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Pepsi [2]
2 years ago
5

How you you factor this expression?

Mathematics
1 answer:
ioda2 years ago
4 0
You have to use factoring by grouping.. multiply by 8 and 15 and what factors add to -14.

The factors are 6 and -20

(2x-5)(4x+3)
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What is anothe way to write 5x754
I am Lyosha [343]
5(700)+(50)+(4)that’s how you write it
5 0
2 years ago
The age of some lecturers are 42,54,50,54,50,42,46,46,48 and 48 calculate the mean age and standard deviation
rjkz [21]

Answer:

Mean age: 48

Standard deviation: 4

Step-by-step explanation:

a) Mean

The formula for Mean = Sum of terms/ Number of terms

Number of terms

= 42 + 54 + 50 + 54 + 50 + 42 + 46 + 46 + 48+ 48/ 10

= 480/10

= 48

The mean age is 48

b) Standard deviation

The formula for Standard deviation =

√(x - Mean)²/n

Where n = number of terms

Standard deviation =

√[(42 - 48)² + (54 - 48)² + (50 - 48)² +(54 - 48)² + (50 - 48)² +(42 - 48)² + (46 - 48)² + (46 - 48)² + (48 - 48)² + (48 - 48)² / 10]

= √-6² + 6² + 2² + 6² + 2² + -6² + -2² + -2² + 0² + 0²/10

=√36 + 36 + 4 + 36 + 4 + 36 + 4 + 4 + 0 + 0/ 10

=√160/10

= √16

= 4

The standard deviation of the ages is 4

3 0
3 years ago
HHHHHHHHHHHEEEEEEEEEELLLLLLLLPPPPPPP FIRST RIGHT GITS BRAINLEST
deff fn [24]

Answer:

300

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Find the mean, median, mode, and range of the data below:
Inga [223]

Answer:

6.75

Step-by-step explanation:

Find the mean of the set {2,5,5,6,8,8,9,11} .

There are 8 numbers in the set. Add them all, and then divide by 8 .

2 + 5 + 5 + 6 + 8 + 8 + 9 + 118=548=6.75

3 0
3 years ago
State 7m to 250cm as a ratio in its lowest terms
madam [21]
First you have to convert the numbers to the same units.  Either m to cm or cm to m.
To go from meters to centimeters you multiply the number by 100.
7*100=700cm
Now you have 700cm/250cm.  This needs simplified
I divided each number by 50 to get 14 and 5
14cm/5cm or 14cm:5cm
3 0
3 years ago
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