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vodomira [7]
3 years ago
6

Which expression has a value different from the others?

Mathematics
1 answer:
Alexxandr [17]3 years ago
5 0

Answer:

I think B

Step-by-step explanation:

A. -108+105

-3

B. 9.9+(12.9)

22.8

C. -7 2/9 -(-4 2/9)

-3

D. 637 - 641

-4

Is the last one written wrong because if that one is 637-640 or 638-641 than it would equal -3. Then the answer would be B.

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3 years ago
Read 2 more answers
Justin is marking a border for a garden. He walks 200 feet to the east, then turns and
ELEN [110]

Answer:

d = 233.23 feet

Step-by-step explanation:

Given that,

Justin walks 200 feet to the east, then turns and  walks 120 feet due south.

We need to find the total distance walked by Justin. Let the distance be d.

We can use the Pythagoras theorem to find it such that,

d=\sqrt{d_1^2+d_2^2} \\\\d=\sqrt{200^2+120^2} \\\\d=233.24\ feet

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3 0
3 years ago
What is the SUM of the angle measures in a nonagon (9 sides)?
GenaCL600 [577]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Put in simplest form 8/15 × 5/6
algol13
8/15 x 5/6
•multiply across the numerator and denominator.

= 40/90
• then find a common factor that will go into both the numerator and denominator equally.

Common factor: 5

= 8/18
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Simplified:

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6 0
4 years ago
X+2y=8 x-2y=-4 solve by system of equations
Vsevolod [243]

Answer:

Step-by-step explanation:

x + 2y = 8 -----------(I)

x - 2y  = -4 -----------(II)

Add equation (I) & (II) and thus y will be eliminated and we can get the value of 'x'

(I)           x + 2y = 8

(II)          <u>x - 2y  = -4</u><u>      </u>{Now add}

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x = 2

Substitute x =  2 in equation (I)

2 + 2y = 8

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    2y = 6

      y = 6/2

y = 3

3 0
3 years ago
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