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marishachu [46]
3 years ago
14

Three times a number, x, increased by four is equal to five times the number, x. Which equation can be used to solve for x?

Mathematics
2 answers:
sesenic [268]3 years ago
5 0

Answer:

X = 2

Step-by-step explanation:

From the question we can gather some pretty important information. For starters, "three <u>times</u> a number x" would give us 3x. Secondly, "<u>increased</u> by 4" would give us +4. Lastly, "<u>equal</u> to five <u>times</u> x" would be = 5x. If we put this all together we have the following Algebraic Equation.

3x+4 = 5x

Now we can start solving the equation.

3x+4 = 5x

4 = 2x

2 = x

So we can see that the value of x in this equation is 2.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

Dimas [21]3 years ago
4 0
3x+4=5x
4=5x-3x
4=2x
X=2
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Identify the converse:<br> If an angle measures 90°, then it is a right angle.
aleksklad [387]

Answer:

Yes

Step-by-step explanation:

8 0
3 years ago
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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
BartSMP [9]

Answer:

The decision rule is  

Reject the null hypothesis  

Step-by-step explanation:

From the question we are told that

    The population mean is \mu =  5.6  \ pounds/inch^2

     The  sample size is  n =  160

      The sample mean is  \=  x =  5.7  \  pounds/ inch^2

     The variance is \sigma ^2 =  0.25

       The level of significance is  \alpha   =  0.01

The null hypothesis is  H_o  :  \mu  =  5.6

The alternative hypothesis is H_a :  \mu > 5.6

Generally the standard deviation is mathematically represented as

           \sigma =  \sqrt{\sigma ^2 }

=>         \sigma =  \sqrt{0.25  }  

=>         \sigma =  0.5  

Generally the test statistics is mathematically represented as

        z =  \frac{\= x  - \mu }{ \frac{\sigma}{\sqrt{n}  } }

=>     z =  \frac{5.7  - 5.6  }{ \frac{0.5 }{\sqrt{ 160 }  } }  

=>     z =  2.53

From the z table  the area under the normal curve to the left corresponding to  2.53   is

        p-value =  P(Z >  2.53 ) =0.0057

From the value obtained we see that the p-value  < \alpha hence

The decision rule is  

Reject the null hypothesis  

The conclusion is  

There is sufficient evidence to conclude that the believe  that the valve performs above the specifications is true

 

5 0
3 years ago
(1.1.8 in the book) Let P be the proposition ’I bought a lottery ticket this weekend’ and Q be the proposition ’I won the millio
Karolina [17]

Answer:

~ is for negation

^ is for "and"

v is for "or"

=> for "if then"

<=> for "if and only if"

Step-by-step explanation:

(a) ~P (negation of P)

I didn't buy a lottery ticket this weekend.

(b) P v Q (P is in disjunction Q)

I have either bought a lottery ticket this weekend or won the million dollar jackpot.

(c) P => Q (Q is a consequence of P)

I won the million dollar jackpot because I bought a lottery ticket this weekend.

(d) P ^ Q (P is in conjunction with Q)

I bought a lottery ticket this weekend, and I won the million dollar jackpot.

(e) P <=> Q (P and Q are dependent on each other)

If only I had bought a lottery ticket this weekend, I would have won the million dollar jackpot.

(f) ~P => ~Q (negation of Q is a consequence of negation of P)

I didn't win the million dollar jackpot because I didn't buy a lottery ticket this weekend.

(g) ~P ^ ~Q (negation of P is in conjunction with negation of Q)

I neither bought a lottery ticket this weekend nor won the million dollar jackpot.

(h) ~P v (P ^ Q)

This is logically equivalent to (~P v P) ^ (~P v Q) (negation of P is in disjunction with P, and also with disjunction with Q), and can be best expressed as:

It didn't matter that I bought a jackpot ticket or not, I won the million dollar jackpot.

8 0
3 years ago
Can you help me please?
wel
The correct answer is true because the number do not repeat
3 0
3 years ago
Someone please help me. ASAP
DENIUS [597]

Answer:

x = 6

Step-by-step explanation:

we both know you dont wanna know how you just want the answer

6 0
3 years ago
Read 2 more answers
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