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notka56 [123]
3 years ago
5

What is the first step in evaluating the expression shown below?

Mathematics
1 answer:
ser-zykov [4K]3 years ago
8 0

The first step would be to A. Subtract 7.4 - 3.6.

You use the PEMDAS rule

Steps:

1. Parenthesis

2. Exponents

3. Multiplication

4. Division

5. Addition

6. Subtraction

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How do I complete this question on arc length?
tresset_1 [31]

Answer:

v ≈ 8.5 km/h

Step-by-step explanation:

Since the diameter of the wheel is 3 m the radius will be r = 1.5 m.

Use the radius of the water wheel to find it's circumference C:

C=2\pi r                                               [set r = 1.5 m]

⇒ C=2\pi (1.5)

⇒ C=3\pi m

One revolution of the water wheel corresponds to 3\pi meters so the angular velocity 15 rmp (revolutions per minute) corresponds to:

15(3\pi ) = 45\pi m/min

Using this result, the speed of the river in kilometers per hour will be:

v=\frac{45\pi m }{1 min} ×  \frac{1 km}{1000 m} × \frac{60 min}{1 h}

⇒ v=8.48230016469  km/h

⇒ v ≈ 8.5 km/h

5 0
2 years ago
Read 2 more answers
The weight of an object on the moon varies directly as its weight on earth. A person who weights 150.94lb on earth weighs 25.66l
Veronika [31]

109.93 lbs

since the quantities vary directly, then

w(moon) = kw(earth ) ← ( k is the constant of variation )

to find k use the given condition

k = w( moon ) / w( earth ) = \frac{25.66}{150.94}

given w(earth) = 218.24

w(moon) = \frac{25.66(218.24)}{150.94} = 109.93


8 0
3 years ago
Simplify (3a ^2)^ 3
Leya [2.2K]
The answer is 27a^6
Hope this helps.
7 0
3 years ago
What expression can you use to find 340 percent of 700?
Amiraneli [1.4K]
It is 3.40 * 700 and that is equal to 2380.
7 0
3 years ago
A factory processes 1,560 ounces of olive oil per hour. The oil is packaged into 24-ounce bottles. How many bottles dose the fac
lozanna [386]
Divide the total amount of olive oil by the amount packaged into an individual bottle.

1560 / 24 = 65 bottles per hour
5 0
3 years ago
Read 2 more answers
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