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adelina 88 [10]
3 years ago
6

Please help I'm desperate :(

Mathematics
1 answer:
zubka84 [21]3 years ago
8 0

Answer:

x=5

Step-by-step explanation:

<u>Similar Triangles</u>

By looking at the construction of the figure, we can safely assume both triangles are similar, i.e. their internal angles are equal and their sides are proportional. Following the proportion of the heights and bases of both triangles we can set this relationship:

\displaystyle \frac{45}{36}=\frac{5x}{20}

Simplifying both fractions

\displaystyle \frac{5}{4}=\frac{x}{4}

Solving for x

x=5

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A clinical psychologist is administering the Hamilton Rating Scale for Depression (Hamilton, 1967). The scale ranges from 0 to 5
Lera25 [3.4K]

Using the normal distribution, it is found that the girl's score of 10 is higher than 99.62% of the population.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 6, \sigma = 1.5.

Her z-score is given by:

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 6}{1.5}

Z = 2.67

Z = 2.67 has a p-value of 0.9962.

Hence her score is higher than 99.62% of the population.

More can be learned about the normal distribution at brainly.com/question/25800303

#SPJ1

7 0
2 years ago
Pieter wrote and solved an equation that models the number of hours it takes to dig a well to a level of 72 feet below sea level
jek_recluse [69]

Answer:

Step-by-step explanation:

Is this the entire question? Some of it makes no sense without a diagram or something.

To get rid of A you actually have to solve the equation.

7h – 5(3h – 8) = –72        Remove the brackets

7h - 15h + 40 = - 72          Combine the like terms

- 8h + 40 = - 72                Subtract 40 from both sides

- 8h = -112                        Divide by -8

    h = 14

Well the depth is a whole number so A is true.

We don't know anything about time. But the answer is positive.

C is false because B is true.

We don't know exactly what the depth of the well is.

I would pick A, but you need the entire question.

8 0
2 years ago
Help me please please
Serggg [28]

Answer:

-2,10

Step-by-step explanation:

fjcvbd,f.jf

5 0
3 years ago
Which calculation will give the total surface area of the solid figure?
KengaRu [80]

Answer:

Step-by-step explanation:

6.

3 0
3 years ago
Read 2 more answers
Someone please help. Thank u so much
Nonamiya [84]
1. $120.66+15.55=$136.21
2. $700.00-$136.21=?
3. The answer is in the 1st and 2nd question
7 0
3 years ago
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