3 years ago

Please help I have two questions left :)

Mathematics

1 answer:

grandymaker [24]3 years ago

3 0

Answer:

120

Step-by-step explanation:

It us 120 because 100 us close to 120 the other numbers dont have anymore than more than 20

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What is x/3-10=12 (what is x please explain)

Mazyrski [523]

Answer:

X=66

Step-by-step explanation:

x/3-10=12

x/3=12+10

x/3=22 ||x3

x=66

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4 years ago

A random sample of 20 students from both the Science and Math club were surveyed about what supplies they would like to purchase

alekssr [168]

Answer:

<u>84 students </u>

Step-by-step explanation:

See the attached table

As shown there are 20 students from Math club, 7 of them would like to choose calculators.

so, the probability of students who choose calculators = 7/20

If there are 240 students in the Math club

So, the number of students expected to choose calculators = 240 * 7/20

<u>So, the number of students = 84 students </u>

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3 years ago

Milo walks 40 meters in 15 seconds.Mira walks 30 meters in 10 seconds. Whose walking rate are greater?and why

Musya8 [376]

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4 years ago

Which of the following graphs dont belong and why?

ahrayia [7]

Answer:

Upper Right

Step-by-step explanation:

All of them have different dips, therefore the one facing in a different direction must be the odd one out.

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3 years ago

Read 2 more answers

Prove that if d|m and d|n, then d|(m+n)

Mila [183]

$d\mid m$ means to say there is some $k_1$ such that $m=dk_1$ . Similarly, $d\mid n$ is equivalent to saying there exists $k_2[/te]x such that [tex]n=dk_2$ .

Now, $m+n=dk_1+dk_2=d(k_1+k_2)=dk_3$ , i.e. there is some $k_3$ such that $m+n$ is a multiple of $d$ , i.e. $d\mid(m+n)$ .

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4 years ago