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zaharov [31]
3 years ago
13

Y = A system of equations. y equals StartFraction one-half EndFraction x minus 6. x equals negative 4.x – 6

Mathematics
2 answers:
Yuliya22 [10]3 years ago
8 0

Answer:=-9.9x10/1

Step-by-step explanation:-99

krek1111 [17]3 years ago
3 0

Answer:

-4,-8

Step-by-step explanation:

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What does the E in an electrode code stands for?​
dalvyx [7]

Answer:

The “E” indicates an arc welding electrode. The first two digits of a 4-digit number and the first three digits of a 5-digit number stand for tensile strength.  So, “1” stands for an all position electrode, “2” for a flat and horizontal electrode, and “4” for a flat, horizontal, vertical down and overhead electrode

3 0
2 years ago
Read 2 more answers
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
A road sign casts a shadow that is 4 feet long.At the same time a 6 foot man standing next to the sign casts a shadow that is 2.
lawyer [7]
The road sign would be 10ft tall.
3 0
3 years ago
Help me plz ASAP help help pls
spayn [35]

Answer:

x\geq -8

Step-by-step explanation:

4 0
2 years ago
Camilla has four more books when Jane has Camilla has 15 books how many books does Jane have
STatiana [176]

Answer:

Jane has 11 books

Step-by-step explanation:

If Camilla has 15 and she has 4 more than Jane just subtract 15 - 4 = 11

5 0
3 years ago
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