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Travka [436]
2 years ago
13

Calculate the value of each expression. Type each value in the corresponding boxes below.

Mathematics
2 answers:
ivolga24 [154]2 years ago
8 0

Answer:

140

-2.6

0

Step-by-step explanation:

60 -(-80) if there is - - that means +

60 + 80 = 140

2.3 + (-4.9) if its + - it just means - ignore the plus

2.3 - 4.9

-2.6

4.5 + (-4.5)

0

Alika [10]2 years ago
8 0

Answer:

a.140

b. -2.6

c. 0

Step-by-step explanation:

a.60-(-80)= 60+80 because two negatives make a positive

=140

b. 2.3+(-4.9)= 2.3-4.9

= -2.6

c. 4.5+(-4.5)=0

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A small plane and a large plane are 6.8km from each other, at the same altitude (height). From an observation tower, the two air
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Answer:

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Step-by-step explanation:

(a)See attached for the diagram representing this situation.

(b)

In Triangle ABC

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Next, we determine the value of Angle B.

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Finally, we find b.

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