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Mathematics

2 answers:

UNO [17]3 years ago

7 0

Answer:

The answer is D

Step-by-step explanation:

BCD is a right triangle. On BCD triangle hypotenuse theorem can be applied. From the hypotenuse theorem below equation can be written:

$a^2=x^2+h^2$

If we change the side of x the equation will be:

$h^2=a^2-x^2$

Naddika [18.5K]3 years ago

4 0

Using Pythagoras' theorem (a² + b² = c²), the correct answer is:

D. h² = a² - x²

Because a would be the hypotenuse, but h is not, so you have to rearrange the equation.

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1. Given the below sequence: -1, -3, -5, -7, . . . (a) What are the next 3 terms? (b) Is this an arithmetic or geometric sequenc

valentinak56 [21]

Answer:

(a) -7 , - 9 , - 11

(b) Arithmetic sequence

(d) -53

Step-by-step explanation:

(a) To find the next three terms , we must firs check if it is arithmetic sequence or a geometric sequence . For it to be an arithmetic sequence , there must be a common difference :

check :

-3 - (-1) = -5 - (-3) = -7 - (-5) = -2

This means that there is a common difference of -2 , which means it is an arithmetic sequence.

The next 3 terms we are to find are: 5th term , 6th term and 7th term.

$t_{5}$ = a + 4d