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2 years ago

An American tourist visits South Africa with $3000. The exchange rate when she arrives is

Mathematics

1 answer:

algol [13]2 years ago

8 0

9514 1404 393

Answer:

$2505.80

Step-by-step explanation:

After the first exchange, the tourist has ...

$3000(12.90 R/$) = R38,700

After 7 days, she has ...

R38,700 -7(R900) = R32,400

After the second exchange, she has ...

R32,400 × ($1/R12.93) = $2505.80

She gets $2505.80 at the second exchange.

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Solve mathematics problem in photo please!

laila [671]

Hello,

8/(x-7)=7/2
==>(x-7)*7=8*2
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==>7x=65
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Answser A

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3 years ago

2x + 3 =-7 Match equation to its solution

Blizzard [7]

Answer:

X= -5

Step-by-step explanation:

You must move all constants to one side of the equation (one side of the equal sign) and away from 2x. To do so, you must do the inverse operation, which would be subtraction in this case because 3 is a positive number. (Inverse of addition is subtraction, Inverse of subtraction is addition, Inverse of multiplication is division, and inverse of division is multiplication) If you squish a constant and variable together (2x) it means multiplication.
What you must do to one side, you must do to the other. So, since you subtracted 3 from the 3, you must subtract 3 from -7, too(subtracting from a negative is just addition- but you keep the negative sign). Once this is done, your equation will be 2x=-10
Now, you must do the inverse operation to 2x to separate the 2. The inverse operation will be division. So, you divide both sides by 2. 2x divided by 2 will give you x. -10 divided by 2 will give you -5. (When you divided negative and positive numbers, the signs are different, meaning it's negative. If they had the same sign, it would be positive.)
Therefore, your answer is x= -5

Hope I helped! :)

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2 years ago

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mario62 [17]

Step-by-step explanation:

Since angles in the same segment are equal, Angle ABC (x) = Angle AOC.

Since Angles AOC and COD are supplementary, Angle AOC = 180° - 130° = 50°

Therefore x = 50°.

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3 years ago

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Your answer is C . good luck.

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Answer:

Step-by-step explanation:

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