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Nikolay [14]
3 years ago
13

Can someone tell me why the answer is 2?

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
8 0

Answer:

If we put x=2 in the given equation, we get the answer for the equation as 2

Given:

      \sqrt{-3 x+10}=x

To find:

Why the answer is 2

Solution:

If we substitute the value x=2 in the given option, we get

        \sqrt{-3(2)+10}=2

          \sqrt{-6+10}=2

        \sqrt{4}=2

Result:

Thus we can say that when substitute the value of x=2

We get the answer as \sqrt{-3 x+10}=2

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Use slopes and y-intercepts to determine if the lines -5x – 4y = -3 and -5x – 5y = -3 are parallel
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Answer:

Not parallel.

Step-by-step explanation:

If the slopes are the same they are parallel.

So we convert each one to slope-intercept form:

-5x - 4y = -3

-4y = 5x - 3    Divide both sides by -4:

y = -5/4 x + 3/4.  

Slope = -5/4.

-5x – 5y = -3

-5y  = 5x - 3       Divide both sides by -5:

y = -1 x + 3/5.

Slope = -1.

The slope are different - so NOT parallel.

7 0
3 years ago
SAT scores (out of 1600) are distributed normally with a mean of 1100 and a standard deviation of 200. Suppose a school council
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I think the answer would be c
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3 years ago
A machine packs boxes at a constant rate of 2/3 of a box every 1/2 minute. What is the number of boxes per minute that the machi
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Answer:

Basicallly, if the machine packs 2/3 of a box every 1/2 min, then the machine will pack twice as many boxes for 1 min, since 1/2 multiplied with 2 is 1.  

2/3 multiplied with 2 is 4/3.  

Therefore, the machine can pack 4/3 boxes per minute.

(what my research says)

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4 years ago
Find a compound proposition involving the propositional variables p, q, and r that is true when exactly two of p, q, and r are t
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Answer:

Consider the proposition C=(p∧q∧¬r)∨(p∧¬q∧r)∨(¬p∧q∧r)

Step-by-step explanation:

This compound proposition C uses the outer disjunction (∨) then the proposition is true if and only if one of the three propositions (p∧q∧¬r),(p∧¬q∧r),(¬p∧q∧r) is true.

First, it is impossible that two or three of these propositions are simultaneously true. For example, if (p∧q∧¬r) and (p∧¬q∧r) are both true, then ¬r is true (from the first conjuntion) and r is true (from the second one), a contradiction. All the other possibilities can be discarded reasoning in the same way.

Since these propositions are mutually excluyent, C is true if and only if exactly one of the three propositions is true (and false otherwise). This can only happen if exactly two of p,q, and r are true and the other one is false. For example, (p∧q∧¬r) is true when p and q are true, and r is false.

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4 years ago
Tom earns $32,110 annually. What is the total amount of
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