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cluponka [151]
4 years ago
13

Can you help me evaluate this: 7m + 14m - 6n - 5n + 2m

Mathematics
2 answers:
Aleksandr-060686 [28]4 years ago
7 0

Answer: 23m - 11n

Step-by-step explanation:

First, we combine all like terms

the like terms for m are: 7m, 14m, and 2m

7m + 14m + 2m = 23m

the like terms for n are: -6n and -5n

-6n + (-5n) = -11n

Then, we put them back.

23m - 11n is the final answer

Artist 52 [7]4 years ago
3 0

Answer:

23m - 11n

Step-by-step explanation:

7m + 14m - 6n - 5n + 2m = (7m + 14m + 2m) - (6n + 5n)

                                        = 23m - 11n

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Answer: Angle r is 60
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The measure of central angle ABC is radians.
mezya [45]

Answer:

9\pi\ units^{2}

Step-by-step explanation:

we know that

The measure of central angle ABC is \frac{\pi}{2} radians

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360\° subtends the complete circle

The area of the shaded sector is the area of a quarter circle

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The area of a quarter circle is equal to

A=\frac{1}{4}\pi r^{2}

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r=6\ units

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A=\frac{1}{4}\pi (6)^{2}=9\pi\ units^{2}

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4 years ago
Hannah will role a number cube,labeled 1 through 6,300 times.About how many times could Hannah expect to roll a number less than
Hitman42 [59]

Answer:

Maybe about 250 times because if it was just 6 times rolling it would be 4 time but since its 300, then this would be close

Step-by-step explanation:


5 0
4 years ago
. If a car can travel 38 miles on 2.4 gallons of gas, how many miles could the car travel on 6 gallons of gas?
lilavasa [31]

Answer:

About 95 miles

Step-by-step explanation:

Let's set up a proportion using the following set up:

miles / gallons = miles / gallons

We know the car can travel 38 miles on 2.4 gallons of gas.

38 miles / 2.4 gallons = miles/ gallons

We don't know how far the car can travel on 6 gallons. Therefore, we can say the car travels x miles on 6 gallons of gas.

38 miles / 2.4 gallons = x miles /6 gallons

38/2.4=x/6

We want to find x (miles for 6 gallons). Therefore, we must isolate x.

x is being divided by 6. The inverse of division is multiplication. Multiply both sides by 6.

6*(38/2.4)=(x/6)*6

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94.9999998=x

Let's round to the nearest whole number. The 9 in the tenth place tells us to round up.

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3 years ago
How to solve 2×4÷3+5
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You will need to follow order of operations, which states that operations must be completed in the following order: parentheses, exponents, multiplication and division, and then addition and subtraction.


In this case, there are no parentheses and no exponents, so we will start with the multiplication and division:

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\Bigg(\dfrac{8}{3} \Bigg) + 5


Now, we will finish by doing addition and subtraction:

\Bigg(\dfrac{8}{3} \Bigg) + 5 = \dfrac{8}{3} + \dfrac{15}{3}

\dfrac{8 + 15}{3}

\boxed{\dfrac{23}{3}}


Our answer is \boxed{\dfrac{23}{3}}.

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4 years ago
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