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3 years ago

2x + 3y = 9

Mathematics

2 answers:

Vinvika [58]3 years ago

7 0

Answer: 3

Step-by-step explanation:

d1i1m1o1n [39]3 years ago

5 0

Answer:

this hard idk lol

Step-by-step explanation:

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Which set of lengths are the side lengths of a right triangle? (9,15,17) (14,23,25) (20,30,40) (15,36,39)

goldfiish [28.3K]

Answer:

(15, 36, 39)

Step-by-step explanation:

Using pythagoreas formula: A^2 * B^2 = C^2

so a=15, b=36, c=39

15^2+36^2=39^2

6 0

3 years ago

Write a rule for the nth term of the arithmetic sequence: a11= 50, d = 7

ivolga24 [154]

Answer:

Required rule for $n^{th}$ is $a_{n}=7n-27$ .

Step-by-step explanation:

Given that,

$a_{11} = 50,\ \ d=7$

From the question: we have to write the $n^{th}$ term of Arithmetic sequence.

Arithmetic Sequence or Arithmetic progression (A.P) : It is a sequence which possess that difference between of two successive sequence is always constant.

$a_{1} ,a_{2},a_{3},a_{4}.....................a_{n-1},a_{n}$

where, $a_{1}$ is the first term of A.P

$d$ is the common difference.

$a_{n}$ is the last term or general term.

The above sequence to be in A.P then their common difference should be equal.

$d=a_{2}-a_{1} =a_{3}-a_{2}=a_{4} -a_{3} ..........................a_{n}-a_{n-1}$

Now, Formula of General Term is $a_{n}=a+(n-1)d$

So, $a_{11}= a+(11-1)d\\ a_{11} = a+10d$

Substituting the value of $a_{11} = 50,\ \ d=7$ we get,

$50=a+10\times7\\50=a+70\\a=-20$

Then General term ( $a_{n}$ ) of given data is

$a_{n}=-20+(n-1)7\\a_{n}=-20+7n-7\\a_{n}=7n-27$

Therefore, Required rule for $n^{th}$ is $a_{n}=7n-27$ .

5 0

3 years ago

If you answer all 4 i will give you brainliest please answer ASAP

marshall27 [118]

Answer:

9. The graph will shift down 2 units

10. The graph will be moved right by 4 units

11. The graph will be vertically stretched by 2 units

Step-by-step explanation:

PLEASE MARK AS BRAINLIEST! HOPE THIS HELPS! :)

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2 years ago

Need help quick simplify the expression (-4) power of 3

sveticcg [70]

Answer:

-64

Step-by-step explanation:

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3 years ago

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What value of x will make the triangles similar by the SSS similarity theorem?

Sophie [7]

Answer:

1,5

Step-by-step explanation:

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3 years ago