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krek1111 [17]
3 years ago
8

What is the difference (7² + 8² + 9²) - (6² + 5² + 4²)

Mathematics
1 answer:
prisoha [69]3 years ago
5 0

Answer:

199

Step-by-step explanation:

49 + 64 + 81 - 36 +25+16

194 - 36 +25 + 16

-36 + 25 + 16

= -11 + 16 = 5

194 + 5 = 199

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Can you please help me solve questions 1 and 2
Katyanochek1 [597]

Answer:

see explanation

Step-by-step explanation:

(1)

Given the perimeter then the third side is the perimeter subtract the sum of the 2 given sides, that is

third side

= 4x + 3y - (x - y + x + y)

= 4x + 3y - 2x ← collect like terms

= 2x + 3y

(2)

The area (A) of a triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h the height )

Here b = 2x + 6 and h = x - 2, thus

A = \frac{1}{2}(2x + 6)(x - 2) ← expand factors using FOIL

   = \frac{1}{2}(2x² + 2x - 12) ← distribute

   = x² + x - 6 ← in standard form

7 0
3 years ago
And can you also please show the work too !!!!
Goshia [24]

Answer:

A: 5 behind the line

Step-by-step explanation:

You can make an equation: 8 - 6 - 4 - 9 + 6

Then you can solve it a little at a time:

8 - 6 = 2

2 - 4 = -2

-2 - 9 = -11

-11 + 6 = -5

Negative 5 is the same thing as 5 behind the line.

<em>Hope this helps!    :)</em>

8 0
3 years ago
Read 2 more answers
The first term in a sequence is 3. the term to term rule is add 5. is 97 at term in the sequence? give a reason why.
Harlamova29_29 [7]

Answer: No it’s not.

Step-by-step explanation: So if to find the next number, you add five, then all of the numbers in the sequence will either end with 8 or 3. (5+3 or 0+3). Therefore 97 is not a term in the sequence.

7 0
3 years ago
What is the length of side BC? PLEASE HELP!
Luda [366]

The Correct Answer:

a.

7 0
3 years ago
PLEASE HELP WILL GIVE POINTS AND MARK BRAINLIEST PLEASE!!!!!!!!!!!!!
Usimov [2.4K]

Answer:

The point must be between 5 and 6, accurately in 5,4

Step-by-step explanation:

SQT[29] = 5,38

Best regards

4 0
4 years ago
Read 2 more answers
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