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kondaur [170]
2 years ago
14

Anaya swims 10 miles at eachof her practice sessions. how long is a practice session if she swims at an average speed. 2 miles p

er hour, 2 1/2 miles per hour, m miles per hour, 2 miles per hour more than m miles per hour, three times slower than m miles per hour.
Mathematics
2 answers:
Verizon [17]2 years ago
8 0

Answer:

6

Step-by-step explanation:

i dont know how to do this im sry, but i want points

Trava [24]2 years ago
4 0

Answer:

If 2 mph) 5 hours

If 2.5 mph) 4 hours

If m mph) 10/m hours

If m+2 mph) 10/(m+2) hours

If m/3 mph) 30/m hours

Step-by-step explanation:

To find the time divide the distance (10) by the speed.

10/2=5

10/2.5=4

10/m

10/(m+2)

10/(m/3)=10(3/m)=30/m

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Answer:

D

Step-by-step explanation:

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2 years ago
Alexandra has 36 coins valued at $6.00. She has only nickels and quarters. Which equation can be used to solve for the number of
grandymaker [24]
0.05n + 0.25(36 – n) = 6
5 0
3 years ago
Read 2 more answers
Simplify the expression, only odds 9-17
Elodia [21]

All exercises involve the same concept, so I'll show you how to do the first, then you can apply the exact same logic to all the others.

The first thing you need to know is that, when a certain quantity multiplies a parenthesis, you can distribute that number to every element in the parenthesis. This means that

a(b+c) = ab+ac

So, a is multiplying the parenthesis involving b and c, and we distributed it: a multiplies both  b and c in the final result.

Secondly, you have to know how to recognize like terms, because they are the only terms you can sum. Two terms can be summed if they have the same literal expression. So, for example, you cannot sum 3x+2y, and neither 5x^2-4x exponents count.

But you can su, for example,

5x-3x = (5-3)x = 2x

or

23xy^2z^6 - 17xy^2z^6 = 6xy^2z^6

So, take for example exercise 9:

1.2(7x-5y) - (10y-4.3x)

We distribute the 1.2 through the first parenthesis:

1.2(7x-5y) = 1.2 \cdot 7x - 1.2 \cdot 5y = 8.4x-6y

And you can distribute the negative sign through the second parenthesis (it counts as a -1 to distribute):

- (10y-4.3x) = -10y+4.3x

So, the expression becomes

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Now sum like terms:

(8.4+4.3)x + (-6-10)y = 12.7x - 16y

7 0
3 years ago
A) Determine which amounts of postage can be formed using just 3-cent and 10-cent stamps.
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wait i will take screen shot please bran-list

8 0
3 years ago
A 32 foot tall tree casts a shadow that is 48 feet long. How far away from the tree is a
sveticcg [70]

Answer:

39 feet

Step-by-step explanation:

take the tree as AB , the distance between the man and the tree as BC, the distance between the man and the tip of the shadow CD and the point intersecting the hypotenuse CE

since CE parallel to AB we can BPT

CE/AB = CD/BD

6/32= CD/48

CD = 9 feet

since CD is feet

BC is 48-9 = 39 feet

3 0
2 years ago
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