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Svetradugi [14.3K]
2 years ago
15

Please if someone can help me

Mathematics
1 answer:
Travka [436]2 years ago
8 0

\huge\underline\gray{✏ANSWER}

<u>\frac{6}{7}</u>

<u>I</u><u> </u><u>hope</u><u> </u><u>it</u><u> </u><u>helps</u><u>!</u><u> </u>

<u>#BrainliestBunch</u>

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A dog weighs 44 pounds and the veterinaria
Bumek [7]
Both equations are correct. x= 37. plugging in 37 for x gets the right answer for both. 44-(37)=7 and (37)+7=44. Another equation you could use is 44-7=x... which makes x = 37. does that make any more sense than my last response? I hope so.
7 0
3 years ago
Prove the identity.<br> tan(x − y) + tan(z − x) + tan(y − z) = tan(x − y) tan(z − x) tan(y − z)
Viktor [21]

Step-by-step explanation:

This is known as the triple tangent identity.  Start with the fact that the three angles add up to 0.

(x − y) + (z − x) + (y − z) = 0

Subtract two terms to the other side and take the tangent:

x − y = -((z − x) + (y − z))

tan(x − y) = tan(-((z − x) + (y − z)))

Use reflection property:

tan(x − y) = -tan((z − x) + (y − z))

Now use angle sum identity:

tan(x − y) = -[tan(z − x) + tan(y − z)] / [1 − tan(z − x) tan(y − z)]

tan(x − y) = [tan(z − x) + tan(y − z)] / [tan(z − x) tan(y − z) − 1]

tan(x − y) [tan(z − x) tan(y − z) − 1] = tan(z − x) + tan(y − z)

tan(x − y) tan(z − x) tan(y − z) − tan(x − y) = tan(z − x) + tan(y − z)

tan(x − y) tan(z − x) tan(y − z) = tan(x − y) + tan(z − x) + tan(y − z)

4 0
3 years ago
4. The annual salaries of employees in a large company are approximately
svetoff [14.1K]

a. What percent of people earn less than $40000?

Solution: Let S be the random variable of a salary of employee (in $), S ~ N(50000,20000). Then the random

variable X =−50000

20000

~N(0,1).

( < 40000) = ( <

40000 − 50000

20000 ) = ( < −0.5) = (−0.5) = 0.3085375.

Here Φ(x) denotes the cumulative distribution function of a standard normal distribution.

Answer: 31%.

b. What percent of people earn between $45000 and $65000?

Solution:

(45000 < < 65000) = (

45000 − 50000

20000 < <

65000 − 50000

20000 ) = (−0.25 < < 0.75)

= (0.75) − (−0.25) = 0.7733726 − 0.4012937 = 0.3720789.

Answer: 37%.

c. What percent of people earn more than $70000?

Solution:

( > 70000) = ( >

70000 − 50000

20000 ) = ( > 1) = 0.8413447.

Answer: 84%.

5 0
2 years ago
What is a number less than 130 that rounds to 130 when rounding to the nearest ten
lilavasa [31]

Answer:

129.99

Step-by-step explanation:

129.99 rounds to 130 because the 9 in the hundredths place causes the 9 in the tenths place to round up, making the number 130.0.

7 0
2 years ago
Read 2 more answers
10×3 tens in standard form
tamaranim1 [39]

The answer to that would be 30

5 0
3 years ago
Read 2 more answers
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