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bearhunter [10]
3 years ago
10

Pleas help me with this

Mathematics
1 answer:
ivann1987 [24]3 years ago
3 0

Answer:

B by Pythagorean theorem

Step-by-step explanation:

20² = 12² + 16²

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Can someone please help with this ?
creativ13 [48]

Answer:     -9n+20

This is the same as 20-9n

================================================

Explanation:

The jump from 11 to 2 is "minus 9"

The jump from 2 to -7 is also "minus 9".

Assuming this pattern continues on, we have an arithmetic sequence with

  • a = 11 = first term
  • d = -9 = common difference

The nth term can be found like so

a_n = a + d(n-1)\\\\a_n = 11 + (-9)(n-1)\\\\a_n = 11 -9n + 9\\\\a_n = -9n+20\\\\

Let's check the answer by trying n = 3

a_n = -9n+20\\\\a_3 = -9*3+20\\\\a_3 = -27+20\\\\a_3 = -7\\\\

This shows the third term is -7, which matches what the original sequence shows. The answer is partially confirmed. I'll let you check the other values of n. You should get 11 when trying n = 1, and you should get 2 when trying n = 2.

4 0
2 years ago
 What is 4/1 + 3/4 =  equal to?
kari74 [83]
4/1 is the same as 4.

So 4+3/4= 4 and 3/4

<u>Final Answer</u>= 4 and 3/4
3 0
3 years ago
Read 2 more answers
The points (-6, 5) and (r, 20) lie on a line with slope 5/4<br> Find the missing coordinate r.
mixas84 [53]
R = 6
(WORK SHOWN BELOW)

8 0
2 years ago
(2/3)^x-1=27/8, Find x. Please, a step-by-step explanation.​
Vaselesa [24]

Answer:

x=-2

Step-by-step explanation:

(2/3)^x-1=27/8

Rewriting the right hand side

(2/3)^x-1=(3/2)^3

We know that a^-b = 1/a^b  Hint: { 1/(3/2) = 2/3}

(2/3)^x-1=(2/3) ^-3

The bases are the same, so the exponents are the same

x-1 = -3

x -1+1 = -3+1

x = -2

8 0
3 years ago
PLEASE HELP! I WILL MARK YOU AS BRAINLIEST
Makovka662 [10]

Answer:

147.03 cm^2

Step-by-step explanation:

A= bh

16.9 cm x 8.7 cm

8 0
3 years ago
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