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valentinak56 [21]
2 years ago
13

a boy has 90 coins that are all dimes and quarters. if he has $14.55, how many quarters does he have?

Mathematics
1 answer:
GrogVix [38]2 years ago
3 0

Answer:

58

Step-by-step explanation:

remainder 2

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Are these equations infinite solution, no solution, or one solution?
Karo-lina-s [1.5K]

Answer:

1) one solution

2) Infinitely many solution

3) no solution

Step-by-step explanation:

The first equation is -14-8x=-2(-3x+7)

Let us expand the right hand side to get:

-14-8x=-2*-3x+-2*7

We multiply -14-8x=6x-14

We group similar terms to get:

-8x-6x=-14+14

Combine similar terms to get:

-14x=0

Divide through by -14 to get:

x=0

2) The second equation is 3+5x=5(x+2)-7

We expand to obtain:

3+5x=5x+5*2-7

Multiply to get:

3+5x=5x+10-7

This gives us

3+5x=5x+3

5x=5x

1=1

There is infinitely many solutions

3) The third equation is: 36-7x=-7(x-5)

We expand to get:

36-7x=-7x+35

Group similar terms;

-7x+7x=35-36

0=-1

This statement is not true so there is no solution.

5 0
2 years ago
See attachment for questions.
goldfiish [28.3K]
The solution is attached. I hope it helps

3 0
2 years ago
What is the f(n) runtime of the following pseudocode: sum = 0 for A = N/2 downto 1 for B = 1 to 4N increment sum by B
nikitadnepr [17]

Answer:

f(N) = 2+ N/2 + 6N² units of time.

Step-by-step explanation:

Assigning 0 to the variable sum takes one unit of time.

Each time you increment sum by B, you need to call the value of sum, sum it to B and assign it to sum, which takes three units of time in total. You are repeating this process for each value of B which ranges from 1 to 4n and for each value of A which ranges from 1 to n/2. Opening the FOR takes also another unit of time, so, as a result, we have

f(N) 1 + 1 (open the FOR in A)+ N/2*(1 (open the FOR in B) + 4N*3) = 2+ N/2 + 6N² units of time. It has order complexity O(N²).

5 0
3 years ago
You are the owner of a toy store and preparing to make a donation to a local children's hospital you must prepare 320 teddy bear
Nookie1986 [14]

Answer:

90 feet

Step-by-step explanation:

320 (1/8) = 40

3/4 (40) = 30 yards

1 yard = 3 feet

30 (3) = 90 feet

3 0
2 years ago
The congruent sides of an isosceles triangle are called ____, and the third side is called the _____.
In-s [12.5K]

Answer:


Step-by-step explanation:

Congruent sides are called legs.


Third side is called the base.

4 0
3 years ago
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