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Ugo [173]
3 years ago
7

From Midnight to 6 am the temperature rose 8 degrees C. At 6 am the temperature was -21 degrees C. What was the temperature at m

idnight? Please explain your answer.
Mathematics
2 answers:
Alika [10]3 years ago
7 0
Hello!

We know that from midnight to 6am the temperature went up 8° and at 6am it was -21°

To find what it was at midnight we have to work backwards

Since it went up we have to subtract 8 from -21

-21 - 8 = -29

The answer is -29°C

Hope this helps!
artcher [175]3 years ago
3 0
The answer would be -29C. If you have a negative number and i ROSE, or added, the negative number would change to a number closer to zero. So -21+8=-29
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A restaurant chef ordered 4 pounds of beef at $3.25 per pound, 6 pounds of potatoes at $1.96 a pound, and 5 pounds of carrots at
zhenek [66]

Answer:

Profit = $18.8 per meal

Step-by-step explanation:

Chef ordered beef = 4 pounds

Cost of beef = $3.25 per pound

Total cost of beef = 4 × 3.25 = $13

Amount of potatoes ordered = 6 pounds

Cost of potatoes = $1.96 per pound

Total cost of potatoes = 6 × 1.96

                                     = $11.76  

Amount of carrots ordered = 5 pounds

Cost of carrots = $1.81 per pound

Total cost of carrots = 5 × 1.81 = $9.05

Total amount of beef, potatoes and carrots = $13 + $11.76 + $9.05

                                                                        = $33.81

Number of meals prepared with material purchased = 28

Per meal cost = \frac{33.81}{28} = $1.2075

Selling price of one meal = $20

Profit per meal = Selling price - Cost price

                         = 20 - 1.2075

                         = 18.7925

                         ≈ $18.8

Therefore, he will make $18.8 for each meal.

3 0
3 years ago
Which expression is equivalent to (5 x 6)*(3 * 2)?
castortr0y [4]

Answer:

A=16

B=55

C=336

Ta Answer.orect

3 0
2 years ago
If (a+b) / (x−y) = 3/5 then (10a + 10b) / (9x−9y) = ?
lbvjy [14]

Answer:

2/3

Step-by-step explanation:

Look at what you are getting on the right hand question. 10a +10b has a common factor that can be pulled out. It is 10

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Now look at the denominator

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There are a lot of possible answers.

Mine would be to multiply 3/5 * 10/9

\dfrac{3}{5}*\dfrac{10}{9} = \dfrac{30}{45} = \dfrac{2}{3}

so

(10a + 10b)/(9x - 9y) = 2/3

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