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ValentinkaMS [17]
3 years ago
15

(Another question would be “You are supposed to use order of operations where there are multiple sets of operations inside paren

theses, true or false?”)

Mathematics
1 answer:
stellarik [79]3 years ago
4 0

1 because using your order of operations you start parenthesis and inside that parenthesis is an exponent so you start with that. So 2^3 is 8. Now you have 20-(3x8-5). Now you do the multiplication in the parenthesis. So you get 20-(24-5). Finishing what is in the parenthesis you subtract 5 from 24 to get 20-19 or 1.

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: Logan is driving a boat that has a speed of 18 mph in standing water (no current). She drives the boat up and down a river to
nadya68 [22]

Answer: the speed of the current is 6 mph

Step-by-step explanation:

Let x represent the speed of the current.

Logan is driving a boat that has a speed of 18 mph in standing water.

Assuming the current slowed down the boat while she was going up(upstream), it means that his total speed was (18 - x) mph

Also, if the current helped the boat while she was going down(downstream), it means that his total speed was (18 + x) mph

Time = distance/speed

The boat travels 4 miles each way. The time taken to travel upstream is

4/(18 - x)

Time taken to travel downstream is

4/(18 + x)

The round trip took 0.5 hour. It means that

4/(18 - x) + 4/(18 + x) = 0.5

Multiplying through by (18 - x)(18 + x), it becomes

4/(18 - x) + 4/(18 + x) = 0.5(18 - x)(18 + x)

4(18 + x) + 4(18 - x) = 0.5(18 - x)(18 + x)

72 + 4x + 72 - 4x = 0.5(324 + 18x -

18x - x²)

144 = 0.5(324 - x²)

144 = 162 - 0.5x²

0.5x² = 162 - 144

0.5x² = 18

x² = 18/0.5 = 36

x = √36

x = 6

8 0
3 years ago
The image shows the distances in miles between three cities. How much closer is it to travel from Aurora to Clifton directly tha
murzikaleks [220]

Answer:

First we need to calculate the distance between Clifton and Burlington by using Pythagorean theorem:

    x² + 65² = 97²

=> x²           = 97² - 65²

=> x²           = 5184

=> x             = √5184 = 72 (m)

The total distance from Aurora to Clifton through Burlington is: 65 + 72 = 137 (m)

We have: 137 - 97 = 40 (m)

So it is 40 m  closer to travel from Aurora to Clifton directly than from Aurora to Clifton through Burlington

7 0
3 years ago
Which of the following four items is the least like the other three ? A, H, I, E
gizmo_the_mogwai [7]
H, due to the fact it is a consonant; while A, I, and E are all vowels. 
3 0
3 years ago
Can someone please help me?
Molodets [167]

Answer: (2.3)

Step-by-step explanation:

8 0
3 years ago
What's the simplified form of this expression? 3-[-2/3 x (7 +2) =11]
svetoff [14.1K]

Answer:

x = 4/3

Step-by-step explanation:

7 0
3 years ago
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