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WITCHER [35]
3 years ago
7

in a coin jar, there are 45 nickles. the number of pennies and nickles together equal the number of dimes. there are 2 quarters

for every 3 nickles and 2 dimes for every quarter. how many are there of each type of coin?​
Mathematics
1 answer:
fredd [130]3 years ago
3 0

Answer:

45 nickels

30 quarters

60 dimes

15 pennies

Step-by-step explanation:

Quarters:

45÷3=15

15×2=30

Dimes:

30×2=60

Pennies:

60-45=15

HOPE THIS HELPS!!!!!:)

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Solve 3x+2y=7 and x-4y=-21 by using any method
kupik [55]

Answer:

(- 1, 5 )

Step-by-step explanation:

Using the method of substitution.

Given the 2 equations

3x + 2y = 7 → (1)

x - 4y = - 21 → (2)

Rearrange (2) expressing x in terms of y by adding 4y to both sides.

x = 4y - 21 → (3)

Substitute x = 4y - 21 into (1)

3(4y - 21) + 2y = 7 ← distribute and simplify left side

12y - 63 + 2y = 7

14y - 63 = 7 ( add 63 to both sides )

14y = 70 ( divide both sides by 14 )

y = 5

Substitute y = 5 into (3)

x = (4 × 5) - 21 = 20 - 21 = - 1

Solution is (- 1, 5 )

8 0
3 years ago
Rita has a loan of $45,580. This loan has a simple interest rate 4% per year . What is the amount of interest that rRta will be
Feliz [49]

Answer:

$1,823.2

Step-by-step explanation:

Simple interest is calculated using the formula

I = P X R X T

where I is the interest amount

P is the principal amount: 45,580.  

R is the interest rate which is 4 %, or 0.04%

T is time, One year.

I = $45,580 x 0.04 x 1

I = $1,823.2 x 1

I = $1,823.2

7 0
3 years ago
Sometimes, a data set has two values that have the highest and equal frequencies. In this case, the distribution of the data can
Aliun [14]

Answer:

Option D is correct.

Bimodal (Having two modes)

Step-by-step explanation:

- Symmetric distribution is a situation in which the values of variables occur at regular frequencies, and the mean, median and mode occur at the same point.

- In a negatively skewed distribution, the mean is usually less than the median because the few low scores tend to shift the mean to the left.

- In a positively skewed distribution, the mode is always less than the mean and median.

- A bimodal distribution is a continuous probability distribution with two different modes, that is, two different values with the highest and equal frequencies.

8 0
3 years ago
Read 2 more answers
Which pair of angles are an example of supplementary angles?
patriot [66]

Answer:

<h3>A Angle 1 and Angle 7 </h3>

Step-by-step explanation:

<h3> I think the Answer is A...</h3>

If you like this answer then mark this answer as BRAINLIEST answer....

Thank you ☺️☺️

5 0
3 years ago
Read 2 more answers
PLS HELP!!! WILL GIVE A LOT OF POINTS!!! <br><br><br><br> dont forget the show your work pls
kolbaska11 [484]

Answer: it might be 8

Step-by-step explanation: Write a distance formula:  x^2  - x^1    

substituted -3.8, 4.2 into  x^2  - x^1   and u will get 4.2 + 3.8 and u will calculate and it gets 8

I hope its right

7 0
2 years ago
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