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Savatey [412]
2 years ago
9

Solve for x. enter you answer below as a fraction ​

Mathematics
2 answers:
Alex777 [14]2 years ago
8 0

Answer:

x=9/80

Step-by-step explanation:

Andrew [12]2 years ago
4 0

Answer:

9/80

Step-by-step explanation:

1)\ x + \frac{9}{20} = \frac{9}{16}

2)\ x = \frac{9}{16} - \frac{9}{20}

3)\ x = \frac{9}{16} - \frac{9}{20}

4)\ x = \frac{45}{80} - \frac{36}{80}

5)\ x = \frac{9}{80}

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Given that QT is an altitude of triangle QRS, measure of angle QTS=(6x+36), and QR = 2x – 5, find QR.
Alexeev081 [22]
We know that
if <span>QT is an altitude of triangle QRS
then
</span><span>the measure of angle QTS is equal to 90</span>°
so
6x+36=90-----> 6x=90-36----> x=54/6
x=9
QR=2x-5-----> QR=2*9-5-----> QR=18-5-----> QR=13

the answer is
QR=13
6 0
3 years ago
Read 2 more answers
Suppose it is known that 60% of radio listeners at a particular college are smokers. A sample of 500 students from the college i
vladimir1956 [14]

Answer:

The probability that at least 280 of these students are smokers is 0.9664.

Step-by-step explanation:

Let the random variable <em>X</em> be defined as the number of students at a particular college who are smokers

The random variable <em>X</em> follows a Binomial distribution with parameters n = 500 and p = 0.60.

But the sample selected is too large and the probability of success is close to 0.50.

So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:

1. np ≥ 10

2. n(1 - p) ≥ 10

Check the conditions as follows:

 np=500\times 0.60=300>10\\n(1-p)=500\times(1-0.60)=200>10

Thus, a Normal approximation to binomial can be applied.

So,  

X\sim N(\mu=600, \sigma=\sqrt{120})

Compute the probability that at least 280 of these students are smokers as follows:

Apply continuity correction:

P (X ≥ 280) = P (X > 280 + 0.50)

                   = P (X > 280.50)

                   =P(\frac{X-\mu}{\sigma}>\frac{280-300}{\sqrt{120}}\\=P(Z>-1.83)\\=P(Z

*Use a <em>z</em>-table for the probability.

Thus, the probability that at least 280 of these students are smokers is 0.9664.

8 0
2 years ago
Given: 3x - 5 = 4 (2x – 15)<br> Prove: x = 11<br> Statement<br> Reason
Shalnov [3]

Step-by-step explanation:

3x-5=8x-60

55=5x

x=11

6 0
2 years ago
Help please with #3
Alenkasestr [34]

Answer: x = 2a over b + c

Step-by-step explanation:

1. Multiply both sides by two. This cancels out 2 and turns a into 2a. It should look like 2a = bx + cx

2) Since both b and c have x’s, we turn it into (b + c)x

3. Then divide both sides by b+c to get 2a over b + c = x

6 0
3 years ago
?<br> 5 in<br> Q 2 in R<br> PQ =
777dan777 [17]

Answer:

What is your specific question regarding Pq?

Step-by-step explanation:

4 0
2 years ago
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