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Darya [45]
2 years ago
8

John has $2 in nickels and dimes in his drawer. The number of nickels is three times the number of dimes. How many of each are i

n the drawer?
Mathematics
2 answers:
Otrada [13]2 years ago
7 0

Answer:

The number of nickles in drawer is 20  and

The number of dimes in drawer is 10  

Step-by-step explanation:

Given as :

Total money in nickels and dimes = $ 2

Let The number of nickels = n

And The number of dimes = d

According to question

The number of nickels is three times number of dimes

I.e  n = 3 times d

Or ,  n = 3 d

∵  n + d = $ 2

and 20 nickles = 1 dollar

      10 dimes = 1 dollar

So, 20 nickles + 10 dimes = $ 1 + $ 1

or, 20 nickles + 10 dimes = $ 2

So, number of nickles is 20, and number of dimes is 10

Hence The number of nickles in drawer is 20  and

The number of dimes in drawer is 10   answer

asambeis [7]2 years ago
5 0

Answer:

8 dimes and 24 nickles

Step-by-step explanation:

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Natalija [7]

Answer:

The equation of the function: y = mx + b

  • m = slope = (y₂ - y₁)/(x₂ - x₁) = [5 - (-3)]/(4 - 0) = (5 + 3)/4 = 8/4 = 2
  • b = y-intercept = -3

Therefore, the equation is <u>f(x) = 2x - 3</u>

When x = 0, f(x) = 2(0) - 3 = <u>-3</u>

When x increases by 1, f(x) increases by <u>2</u> (slope = the rate of change)

5 0
2 years ago
a jogger ran 3 miles due east of his house. then he ran 5 miles at a heading of 30 east of north. how far is he from his house a
Jobisdone [24]
Let's say her speed was x miles/hour during the first 3 miles runThen, time = distance/speedt1 = 3/x       eq1 In the next 4 miles run, her speed = x-1 miles/hourTime taken:t2 = 4/(x-1)      eq2 Now, total time:t1 + t2 = 1 3/5 hourssubstitute t1 and t2 from eqs. 1 and 2 3/x + 4/(x-1) = 1 3/5=> 3/x + 4/(x-1) = 8/5
=> 3(x-1) + 4x = 8x(x-1)/5=> 35x - 15 = 8x2 - 8x=> 8x2 - 43x + 15 = 0=> (8x-3)*(x-5) = 0=> x = 3/8 or 5 miles/hourx can not be 3/8 miles/hour because in that case, the speed during 4 miles run would be 3/8-1 = negative numberi.e. speed during 3 miles segment = 5 miles/hourand speed during 4 miles segment = 5-1 = 4 miles/hour
5 0
3 years ago
Rosa earns $120 per week tutoring math. Each week, she puts $36 from her paycheck in her bank account to save for college. Rosa
natita [175]

Answer:

36/120 x 100

= 30%

..............

3 0
2 years ago
Which equation could represent a circle with a center located at (11,-5)
Anon25 [30]
The standard equation of a circle is:

(x-h)^2-(y-k)^2=r^2 where (h,k) is the center and r is the radius.

We need to make an equation of a circle, whose center is (11,-5) with any radius. Therefore, substitute the value.


(x-h)^2-(y-k)^2=r^2 \\ (11,-5)=(h,k) \\ (x-11)^2-(y-5)^2=64

The bolded part is your answer. Since the radius is not given, we can put any value.

6 0
3 years ago
Find the slope of the line that would pass
Leno4ka [110]

Answer:

10

Step-by-step explanation:

Here we go!

Slope Formula:

\frac{ {y}^{2} -  {y}^{1}  }{ {x}^{2} -  {x}^{1} }

What we know: (-4, -52) and (-1, -22)

Plug in the numbers!

\frac{ - 52 - ( - 22)}{ - 4 - ( - 1)}

Fix it!

\frac{ - 52 + 22}{ - 4 + 1}

Add

\frac{ - 30}{ - 3}

Divide

(negative divided by a negative is a positive!!)

Slope is 10

Hope this helps!

4 0
2 years ago
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