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What is the simplified form of the following expression?

StartFraction 10 y z over negative 2 z EndFraction

The simplified form of the expression is -5y.

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The temperature at the end of the day was 64 degrees. The temperature had increased twice during the day, once by 8 degrees and another time by 4 degrees.

Which expression shows what the temperature was at the start of the day?

To find the initial temperature at the start of the day, you need to subtract the total increase in temperature from the final temperature. In this case, the final temperature is 64 degrees, and the temperature increased twice during the day by 8 degrees and 4 degrees.

Therefore, the expression that shows what the temperature was at the start of the day is:

64 - 8 - 4

Simplifying this expression:

64 - 8 - 4 = 52.

Hence, the initial temperature at the start of the day was 52 degrees.

What is the value of xy over w if x = –3, y = 4 and w = –6.

To find the value of xy/w using the given values:

x = -3, y = 4, and w = -6

Substituting these values into the expression, we have:

xy/w = (-3)(4)/(-6)

Calculating the numerator:

(-3)(4) = -12

Calculating the denominator:

-6

Now we can simplify the expression:

xy/w = -12/(-6)

Dividing both numerator and denominator by -6 to simplify further:

-12/(-6) = 2

Therefore, the value of xy/w is 2.

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