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Andreyy89
3 years ago
8

A town hosts an Arbor Day celebration. Each of the 105 families attending gets to choose a sapling to take home as they leave. M

ichelle and Ari each design surveys in order to determine the average height of the saplings. Michelle samples the first 20 families leaving the celebration. Ari samples every fifth family leaving the celebration. Which best explains which student’s sample is likely to produce more valid results?
Mathematics
2 answers:
nekit [7.7K]3 years ago
5 0

Answer:

michelles

Step-by-step explanation: hope you get it right have a great day and may i have brainlyest

gtnhenbr [62]3 years ago
5 0

Answer:A - Michelle’s because she sampled the saplings of every family in her group

Step-by-step explanation:Edge2021 just finished :)

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Solve for the value of k. (k+8) 400​
pashok25 [27]

Answer:

value of k = 6

Step-by-step explanation:

sum of all angles forming a straight line = 180°

so,

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hence the value of k = 6

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Match each equation to its equivalent equation in slope-intercept form.
Bumek [7]
1.) y+6=3(x+2)    C
     y+6=3x+6
     y=3x+6-6
     y=3x+6
2.) y=1/2(x+8)-2    B
     y=1/2x+4-2
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3.) y+1=1(x-3)    E
     y+1=x-3
     y=x-3-1
     y=x-4
4.) -4x+y=-2    A
     y=-4x-2
5.) 2x-4y=-4     F
     -4y=-2x-4
     y=-2/-4x-4/-4
     y=2/4x+4/4
     y=1/2x+1
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What is 7% tax on a $9.79 purchase
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Let a, b, c, and d be real numbers with a, c 6= 0. Prove that the lines y = ax+b and y = cx + d have the same x-intercept if and
Monica [59]

Step-by-step explanation:

We have got the lines :

y=ax+b\\y=cx+d

Both lines intercept the x-axis in the point :

I = (i_{1} ,i_{2})

In all point from x-axis the y-component is equal to 0.

I=(i_{1},o)

We replace the I point in the lines equations:

0=a(i_{1})+b \\0=c(i_{1})+d

From the first equation :

0=a(i_{1})+b \\-b=a(i_{1})\\i_{1}=\frac{-b}{a}

From the second equation :

0=c(i_{1})+d\\ -d=c(i_{1})\\i_{1}=\frac{-d}{c}

Then i_{1}=i_{1}

Finally :

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y = ax + b and y = cx + d have the same x-intercept ⇔ad=bc

8 0
3 years ago
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