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Sholpan [36]
2 years ago
14

How do you solve this ?

Mathematics
1 answer:
Salsk061 [2.6K]2 years ago
6 0

Step-by-step explanation:

similR triangles

so

x/(x+16) = 20/32= 5/8

8x = 5x+80

3x = 80

x = 80/3

You might be interested in
Show all four symbols of multiplication using the variables a/b
OlgaM077 [116]

Answer:

Multiplication Symbols:

<u>1.</u><u> Times</u> ×

<u>2.</u><u> Dot</u>  ⋅

<u>3.</u><u> Parentheses</u> ()

<u>4.</u><u> Variables next to each other</u> <em>ab</em>

Step-by-step explanation:

The symbols can be used like this...

Times: <em>a</em> × <em>b</em> = <em>c</em>

Dot: <em>a</em> ⋅ <em>b</em> = <em>c</em>

Parentheses:<em> </em>(<em>a</em>)(<em>b</em>) = <em>c</em>

Variables next to each other: <em>ab </em>= <em>c</em>

5 0
3 years ago
1) If the alpha level is changed from α = .05 to α = .01, what happens to boundaries for the critical region?
Alexxandr [17]

Answer:

1) a. Move farther into the tails

2) a. Decreases

Step-by-step explanation:

Hello!

1)

Let's say for example that you are making a confidence interval for the mean, using the Z-distribution:

X[bar] ± Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Leaving all other terms constant, this are the Z-values for three different confidence levels:

90% Z_{0.95}= 1.648

95% Z_{0.975}= 1.965

99% Z_{0.995}= 2.586

Semiamplitude of the interval is

d= Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

Then if you increase the confidence level, the value of Z increases and so does the semiamplitude and amplitude of the interval:

↑d= ↑Z_{1-\alpha /2} * \frac{Sigma}{\sqrt{n} }

They have a direct relationship.

So if you change α: 0.05 to α: 0.01, then the confidence level 1-α increases from 0.95 to 0.99, and the boundaries move farther into the tails.

2)

The significance level of a hypothesis test is the probability of committing a Type I error.

If you decrease the level from 5% to 1%, then logically, the probability decreases.

I hope this helps!

5 0
3 years ago
Which triangle has hypotenuse Side A E?
ira [324]
Triangle GAE is correct
8 0
3 years ago
Read 2 more answers
6x(x − 4) − 16x2 − (9x − 1)?
krek1111 [17]

Answer:

\large\boxed{A.\ -10x^2-33x+1}

Step-by-step explanation:

6x(x-4)-16x^2-(9x-1)\qquad\text{use the distributive property}\\\\=(6x)(x)+(6x)(-4)-16x^2-9x-(-1)\\\\=6x^2-24x-16x^2-9x+1\qquad\text{combine like terms}\\\\=(6x^2-16x^2)+(-24x-9x)+1\\\\=-10x^2-33x+1

7 0
3 years ago
Translate<br> Twice a number is smaller than 42.<br> Help please
vekshin1
I need a picture sorry
6 0
3 years ago
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