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melamori03 [73]
3 years ago
10

Please help vvvvvvvvvvv

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

17

Step-by-step explanation:

since you are subtracting a negative number it reverses, so you actually ADD the two together

so, 12 1/2 + 4 1/2

add the whole numbers first;

12+4=16

then fractions:

1/2 + 1/2= 1

then all together;

16+1=17!

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8. For all pairs of real numbers P and Q where<br> P = 2Q + 9, Q = ?
Gnom [1K]

Answer:

Q = (P-9)/2

Step-by-step explanation:

5 0
2 years ago
How many matches are needed to form figure number 9 and 17? explain​
saveliy_v [14]

Answer:

Please find the complete question in the attached file.

Step-by-step explanation:

For point 1:

At this point we make up triangles for the first one makes up by 3 matches figure 2 make up by 5 matches figure 3 makes up by 7 matches.

For point 2:

 4 \ \ 5\ \   6\ \   7\ \   8  you can try to  

9 \ \  11\ \ 13 \ \ 15 \ \ 17 draw to find  values  

For point 3:

number of matches= 1+2 \times \ figure\  number\\\\

For point 4:

1+2 \times 9=19 \ \ (use \ law \ of\  (iii)) \\\\1+2 \times 17=35

3 0
3 years ago
Proof Pythagorean identities:
dimulka [17.4K]
<h2>Sorry, But I don't know!!</h2>
4 0
3 years ago
Paul's math teacher has several workbooks she wants to place them on a bookshelf but needs to know if they were all fit in one s
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Answer:

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7 0
3 years ago
Read 2 more answers
If one of the roots of the equation x²- 4x + k=0exceeds the other by 2, then find the roots and determine the value of k
BaLLatris [955]

Answer:

roots: 1 and 3

k = 3

Step-by-step explanation:

2 roots: p and p+2

(x-p) (x-p-2) = x² - 4x + k

x² -2px -2x + p² + 2p = x² - 2 (p+1)x + (p² + 2p) = x² -4x + k

-2 (p+1) = -4

p+1 = 2

p = 1   ... root 1

p' = 1+2 = 3   ... root 2

k = p² + 2p = 3

check: (x-1) (x-3) = x² - 4x + 3 = x² - 4x + k

6 0
3 years ago
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