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max2010maxim [7]
3 years ago
6

During the financial crisis of 2008, the price of a barrel of Brent crude oil fell a high of $140 per barrel to around $50 per b

arrel. What is the percent decrease in the price of oil that occurred during this period.
Mathematics
1 answer:
Andrei [34K]3 years ago
7 0

Answer:

  decrease of 64.3%

Step-by-step explanation:

Percentage change can be calculated from ...

  pct change = ((new value)/(original value) -1) × 100%

  = (50/140 -1) × 100%

  = (-9/14)×100% = -64 2/7% ≈ -64.3%

The price of crude fell about 64.3% in that period.

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Sandra is cooking her famous brownies for her class. For her recipe, she needs 5/7 of a cup of sugar, and 1/8 as much salt as su
jarptica [38.1K]

Answer:

\frac{5}{56} salt does she need for her recipe.

Step-by-step explanation:

As per the statement:

For her recipe:

She needs = \frac{5}{7} of a cup of sugar.

It is also given that: 1/8 as much salt as sugar.

⇒ She needs salt for her recipe = \frac{1}{8} \cdot \frac{5}{7} = \frac{5}{7 \cdot 8} = \frac{5}{56}

Therefore, \frac{5}{56} salt does she need for her recipe.

7 0
3 years ago
A is a graph that is unbroken
vichka [17]

Answer:A function whose graph is an unbroken line or curve with no gaps or breaks. Direct Variation


Step-by-step explanation:

A function whose graph is an unbroken line or curve with no gaps or breaks. Direct Variation. A linear relationship between two variables, x and y, that can be written in the form y=kx, where k is a nonzero constant. Discontinuous Function. A function whose graph has one or more jump, breaks, of holes.


4 0
3 years ago
Can someone please help me with 2 and explain the steps to 3 thanks!
Gelneren [198K]

Answer:

#2 is a ratio so you gotta add.

#3 it’s just adding it for example 2p + 5a = 7pa

7 0
3 years ago
A cafeteria purchases milk from one of three providers each week, depending on what other items need to be purchased. The probab
Ivanshal [37]

Answer:

The cafeteria should budget $2.90 on average for one gallon of milk.

Step-by-step explanation:

5 0
3 years ago
Jane works as a tutor for $14 an hour and as a waitress for $11 an hour. This month, she worked a combined total of 93 hours at
daser333 [38]

Answer:

3t + 1,023

Step-by-step explanation:

The computation is shown below:

As a tutor it is $14 per hour

As a waitress it is $11 per hour

Total number of hours worked is 93

Now let us assume the number of hours worked as a tutor is t

So as a waiter is 93 - t

Now the equation is

= $14(t) + $11(93 - t)

= 14t + 1,023 - 11t

= 3t + 1,023

3 0
3 years ago
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