MATHEMATICS
HIGH SCHOOL

Answer: Carol spends 52.5 hours practicing her culinary skills in a 5 week period.

17*2= 44 hours for 4 weeks

17/2= 8.5 for 1 week (half of 2 week period)

44+8.5= 52.5

17*2= 44 hours for 4 weeks

17/2= 8.5 for 1 week (half of 2 week period)

44+8.5= 52.5

COLLEGE

The random variable is the number of nonconforming solder connections on a printed circuit board with 970 connections. Determine the range (possible values) of the random variable.

Answer: X = {0,1,2,3,4,5,....970}

Explanation: Let X → random nonconforming solder connections on a printed circuit board. The number has to be a whole number to indicate the connections. This gives all possible range of X = {0,1,2,3,4,5,....970}

The number of solder connections would always be discrete, hence, a positive integer value. The range of possible values which the variable could have are {1, 2, 3,..., 970}

Number of solder connections would always be a whole number, as it cannot be negative or be a fractional value, hence, the possible range of values will be discrete.

Hence, the possible range can be expressed in the form :

- X = {1, 2, 3,..., 970}

Learn more : brainly.com/question/17225268

HIGH SCHOOL

Simplify the expression (17^1/7)^7

The expression (17^1/7) ^7 simplified is 498.26016735.

The given expression is (17^1/7)^7.

How to find out the simplified value of the expression?Just open up the powers one by one,

we get

(17^1/7)^7 = 498.26016735.

Learn more about the simplification of expressions on:

brainly.com/question/723406

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(17^1/7)^7 simplified is 498.26016735

MIDDLE SCHOOL

What is the value of 2y+3 when y=4?

2y+3 y=4

ok first you replace y with 4

2(4)+3

first you must do 2(4) based on order of operations

=8

ok now 8+3

=11

ok first you replace y with 4

2(4)+3

first you must do 2(4) based on order of operations

=8

ok now 8+3

=11

For y=4

(2)(4)+3

(2)(4)+3

=11

(2)(4)+3

(2)(4)+3

=11

MIDDLE SCHOOL

Lucie is 5 years younger than her brother. Three years ago, Lucie was twice younger than her brother. How old is each now?

Answer:

Lucie is 8 and her brother is 13

Step-by-step explanation:

Lucie is 5 years younger than her brother. Three years ago, Lucie was twice younger than her brother.

Let L be the Lucie age

and B be the brothers age

Lucie is 5 years younger than her brother

L= B-5

Three years ago, Lucie age is L-3

brother is B-3

Lucie was twice younger than her brother.

2(L-3)= B-3

Plug in B-5 for L

2(B-5-3)= B-3

2B - 16= B-3

Subtract B from both sides

B - 16 = -3

Add 16 on both sides

B= 13

Age of brother = 13

Age of Lucie = brother -5 = 13-5 = 8

Answer: Lucie is 8 and her brother is 13

Step-by-step explanation: the only possible way for Lucie to be half her brother's age while being 5 years younger at the same time, is if she's 5 and he's 10. that's how old they were 3 years ago. now you just add 3 to 5 and 10 to find their current ages; 5+3=8 so Lucie is 8, and 10+3=13 so her brother is 13.

:)