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Gnoma [55]
2 years ago
9

Alyssa has 50 quarters and dimes. She has a total of $9.80. How many dimes does she have? Explain your steps.

Mathematics
1 answer:
Debora [2.8K]2 years ago
8 0

Answer:

t $9.50 of it is quarters and 30 cents of it is dimes so 3 dimes

Step-by-step explanation:

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g natasha is in a class of 30 students that selects 4 leaders. How many ways are there to select the 4 leaders so that natasha i
Papessa [141]

Answer:

<h2>3,654 different ways.</h2>

Step-by-step explanation:

If there are 30 students in a class with natasha in the class and natasha is to select four leaders in the class of which she is already part of the selection, this means there are 3 more leaders needed to be selected among the remaining 29 students (natasha being an exception).

Using the combination formula since we are selecting and combination has to do with selection, If r object are to selected from n pool of objects, this can be done in nCr number of ways.

nCr = n!/(n-r)!r!

Sinca natasha is to select 3 more leaders from the remaining 29students, this can be done in 29C3 number of ways.

29C3 = 29!/(29-3)!3!

29C3 = 29!/(26!)!3!

29C3 = 29*28*27*26!/26!3*2

29C3 = 29*28*27/6

29C3 = 3,654 different ways.

This means that there are 3,654 different ways to select the 4 leaders so that natasha is one of the leaders

5 0
3 years ago
Explain how solving 8+2 can help you solve 80+20.
katrin [286]
Becuase 80 is the same as 8 but has an extra 0 at the end (which makes it 80) and same for 20 to 2. 8 + 2 = 10 (now add a zero at the end). The answer should be 100.
5 0
3 years ago
Read 2 more answers
What is the radius and diameter of 7
Aleks04 [339]
<h3>Answer:</h3>

The radius would be <em>3.5 units</em>.

Step-by-step explanation:

This is because a radius is always half of a diameter.

By using that,

7 ÷ 2 = 3.5 units

Since there was no measurement listed in the question, the answer would be in "units."

8 0
3 years ago
Eighty-eight less than m is smaller than -176.<br> Answer in interval notation
IrinaK [193]

Answer:

(- ∞ , 88)

Step-by-step explanation:

1)  m - 88 < - 176

add 88 to both sides

2)  m < -88

3) interval notation: ( - ∞, 88)

8 0
3 years ago
1m=?cm what is it the question mark
svp [43]
The question mark is 100. It is a variable if you don't know
6 0
3 years ago
Read 2 more answers
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