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Andrei [34K]
3 years ago
9

Find the value of x. 42° (5x + 2)

Mathematics
1 answer:
kifflom [539]3 years ago
5 0

Answer:

x=8

Step-by-step explanation:

assuming this is what you mean:

(5x+2)=42

try to

isolate the variable by subtracting 2 from both sides

5x=40

continue to isolate the variable

divide by 5 on both sides

5x/5=40/5

x=8

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What two numbers can multiply to get -84 but can add up to get -17?
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Answer:

<em>-21 and 4</em>

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They multiply to a negative number, so you need a positive number and a negative number.


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Jonathan and Tim want to predict how many quarters are in a large jar containing 120 coins. Jonathan randomly selects a sample o
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 the larger the sample the more accurate the prediction

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If a computer network has 60 switching nodes, in how many ways can 2 or 3 nodes fail?___________
notka56 [123]

Answer:

There are 35990 ways in which 2 or 3 nodes fail

Step-by-step explanation:

Given : A computer network has 60 switching nodes.

To Find : In how many ways can 2 or 3 nodes fail?

Solution:

We are supposed to find no. of ways can 2 or 3 nodes fail.

So, we will use combination here .

No. of ways can 2 or 3 nodes fail=^{60}{C_2 +^{60}C_3

Formula : ^nC_r =\frac{n!}{r!(n-r)!}

No. of ways can 2 or 3 nodes fail=\frac{60!}{2!(60-2)!}+\frac{60!}{3!(60-3)!}

                                                       =35990

Hence there are 35990 ways in which 2 or 3 nodes fail

5 0
3 years ago
A lawyer has found 60 investors for a limited partnership to purchase an inner-city apartment building, with each contributing e
Zinaida [17]

Answer:

39 investors contributed $6,000, and 21 investors contributed $12,000.

Step-by-step explanation:

Let's say that x investors contributed $6,000, and y investors contributed $12,000.

x + y = 60

6,000x + 12,000y = 486,000

x + 2y = 81

x + y = 60

y = 21

x + 21 = 60

x = 39

So, 39 investors contributed $6,000, and 21 investors contributed $12,000.

Hope this helps!

5 0
3 years ago
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