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3 years ago

○a 25°○b 31°○c 23°○d 59°

Mathematics

2 answers:

Kamila [148]3 years ago

7 0

Answer:

Step-by-step explanation:

∠ BDC + ∠ ADC = ∠ ADB , substitute values

- 6x + 53 - 9x + 22 = 90

- 15x + 75 = 90 ( subtract 75 from both sides )

- 15x = 15 ( divide both sides by - 15 )

x = - 1

Then

∠ ADC = - 9x + 22 = - 9(- 1) + 22 = 9 + 22 = 31° → b

Vaselesa [24]3 years ago

5 0

Answer:

i think it would be B

Step-by-step explanation:

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Adult female height is normally distributed with a mean of 65.3 inches and a standard deviation of 2.32 inches. a) If an adult f

emmasim [6.3K]

Answer:

0.0423 is the probability that the adult female has a height less than 61.3 inches.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 65.3 inches

Standard Deviation, σ = 2.32 inches

We are given that the distribution of adult female height is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(adult female has a height less than 61.3 inches)

$P( x < 61.3) = P( z < \displaystyle\frac{61.3 - 65.3}{2.32}) = P(z < -1.7241)$

Calculation the value from standard normal z table, we have,

$P(x < 61.3) =0.0423 = 4.23\%$

0.0423 is the probability that the adult female has a height less than 61.3 inches.

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3 years ago

What is the value of log 7 343?–3 -1/3 1/3 3

xeze [42]

Answer: 3

Step-by-step explanation:

Given :

$Log_{7}$ 343

We need to write 343 in index form of 7.

343 is the same as $7^{3}$ , replacing 343 with $7^{3}$ , we have

$Log_{7}$ $7^{3}$

Recall one on the law of Logarithm :

$Log_{a}$ $b^{c}$ can be written as c $Log_{a}$ b

So, $Log_{7}$ $7^{3}$ can be written as ;

3 $Log_{7}$ 7

Also from the laws of Logarithms , $Log_{a}$ a = 1

so , Log_{7}[/tex] 7 = 1

The solution then becomes

3 x 1 = 3

Therefore :

$Log_{7}$ 343 = 3

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3 years ago

Solve. Show all of your steps. 3.) 3(5 + 2) - 2 cubed

Aleonysh [2.5K]

Answer:

4 3=64

Step-by-step explanation:

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2 years ago

Read 2 more answers

Consider the sets below.

otez555 [7]

B = CA

....hope this helps

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3 years ago

To write the polynomial 5x^4+8x^5-2x+3 in standard form, which term is the leading term?

NARA [144]

Leading term is the term with the highest power (first term from left to writewhen arranged in decreasing power order)

8x^5 is higher power than 5x^4 (5>4)

so leading term is 5th degree
constant=0 degree (x^0=1)
linear=1st degree (x^1)
quartic=4th degree (x^4)
quintic=5th degree (x^5)

answer would be B

7 0

3 years ago

○a 25°○b 31°○c 23°○d 59°​

○a 25°○b 31°○c 23°○d 59°