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2 years ago

Which of the following is the solution set of the problem?

Mathematics

2 answers:

expeople1 [14]2 years ago

7 0

Answer: b

Step-by-step explanation: got it right

timofeeve [1]2 years ago

6 0

2 less than a number n is (n - 2 ) and 3 times this is 3(n - 2 ), thus

3(n - 2) ≥ 5n ( greater than or equal to 5 times n )

3n - 6 ≤ 5n ( subtract 3n from both sides )

- 6 ≥ 2n ( divide both sides by 2 )

- 3 ≥ n or n ≤ - 3

Since n is less than or equal to - 3 use bracket ]

n ∈ ( - ∞, - 3 ] ← solution set

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The point (3,2) reflected in the x-axis is (

ioda

Answer:

reflected across the x-axis is 3,-2 and the y axis is -3,2

Step-by-step explanation:

When you reflect over the X axis it will stay the same numbers but change the Y axis sign. the same thing happens to the y -axis but the x changes siogns instead

8 0

2 years ago

Two drivers, Alison and Kevin, are participating in a drag race. Beginning from a standing start, they each proceed with a const

Vilka [71]

Answer:

Alison wins against Kevin by 0.93 s

Step-by-step explanation:

Alison covers the last 1/4 of the distance in 3 seconds, at a constant acceleration $a_a$ , we have the following equation of motion

$s/4 = a_at_a^2/2$

where s (m) is the total distance, ta = 3 s is the time

$s = 4a_a3^2/2 = 18a_a$

$a_a = s/18$

Similarly, Kevin overs the last 1/3 of the distance in 4 seconds, at a constant acceleration $a_k$ , we have the following equation of motion:

$s/3 = a_kt_k^2/2$

tk = 4 s is the time

$s = 3a_k4^2/2 = 24a_k$

$a_k = s/24$

Since $a_a = s/18$ we can conclude that $a_a > a_k$ , so Alison would win.

The time it takes for Alison to cover the entire track

$s = a_aT_a^2/2$

$T_a^2 = 2s/a_a = 2s/(s/18) = 36$

$T_a = \sqrt{36} = 6 s$

The time it takes for Kevin to cover the entire track

$s = a_kT_k^2/2$

$T_k^2 = 2s/a_k = 2s/(s/24) = 48$

$T_a = \sqrt{48} = 6.93 s$

So Alison wins against Kevin by 6.93 - 6 = 0.93 s

4 0

2 years ago

Solve for x<br> 9x= 1/2(20x-8)

LenKa [72]

Answer:

Step-by-step explanation:

9x=10x-4

x=4

3 0

3 years ago

Read 2 more answers

The nth term of a sequence is 5n.<br> Work out the 10th term of this sequence.

Lilit [14]

Answer:

The 10th term is 50

Step-by-step explanation:

5(10) = 50

6 0

2 years ago

Sorry for asking so much;(

Bingel [31]

Length of line RS is probably 20 because it’s not smaller than the line it’s parallel to but it’s not equal either so the answer has to be c unless there’s a d that’s between 10-20

8 0

2 years ago

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