1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
goldenfox [79]
3 years ago
15

Every evening jenna empties her pockets and puts the change in a jar at the end of the week she had 38 coins all of them dimes a

nd quarters when she added them up she had a totals of $6.95
Mathematics
2 answers:
ser-zykov [4K]3 years ago
8 0
I imagine the part you left out was "how many of each coin did she have?".  I'm going with that.  The thing is you have to relate the NUMBER of coins to each other, which is very different from the VALUE of the coins.  I could have 1 single quarter, but it's worth 25 cents.  Number vs. value.  If she had 38 coins made up of dimes and quarters, then d + q = 38.  That's the number of dimes and quarters, both still unknown.  A dime is worth .10 and a quarter is .25.  Therefore, .10d + .25q = 6.95.  That's the value of the coins.  Solve the first equation for dimes.  d = 38 - q.  Now we can sub in that value of d into the second equation, so we have only one unknown instead of 2.  .10(38-q)+.25q=6.95.  Distribute through the parenthesis to get 3.8-.1q+.25q=6.95.  Combine all the like terms on both sides to get.15q=3.15.  Solve for q and get that q = 21.  So we have 21 quarters.  38-21 = # of dimes, which is 17.  There you go!  Hope that's what you actually needed!  ;)
dedylja [7]3 years ago
7 0
A) d + q = 38
B)  .1d +.25q = 6.95
Multiply A) by -.1
A) -.1d + -.1q = -3.8The adding B)B)  .1d +.25q = 6.95
.15q = 3.15
21 quarters17 dime
Double-Check********************************************************
17 * .10 + 21 * .25 = 
1.70 + 5.25 = 
6.95

You might be interested in
What function was used to make that pattern​
Semenov [28]

Answer:

B

Step-by-step explanation:

The differences in the terms of f(x) are + 3, + 5, + 7

Since the differences are not constant the relationship is not linear

Note the differences in the differences are + 2, + 2,

The second differences are constant indicating a quadratic relationship

Note the relationship between x and f(x)

x = 1 → 1² = 1 ← require to add 5, that is 1 + 5 = 6 ← value of f(x)

x = 2 → 2²  = 4 ← require to add 5, that is 4 + 5 = 9 ← value of f(x)

x = 3 → 3² = 9 ← require to add 5, that is 9 + 5 = 14 ← value of f(x)

x = 4 → 4² = 16 ← require to add 5, that is 16 + 5 = 21 ← value of f(x)

Thus f(x) = x² + 5 → B

3 0
2 years ago
ILL GIVE BRAINLIEST TO QUICKEST AND BEST ANSWER!
Lana71 [14]

Answer:

A. x^{3} + 3x^{2} +5x+3

B. 2x^{3} -3x^{2} -5x+6

C. 3y^{3} - 4y^{2} -11y+4

D. x^{2} - 2xy+y^2+x - y

E.  3m^2-2mn-n^2+6m+2n

F.  4x^4+4x^3+5x^2+2x+1

4 0
2 years ago
Suppose m<3 = 105. find m<6
tatyana61 [14]
If you mean the m^3=105, then m^6 will be ( \sqrt[3]{105}) ^6 which is 105^2 which is 11025
7 0
3 years ago
A slope of -2 and a y-intercept of -7
rosijanka [135]
Y=-2x-7
Y=mx+b where m is the slope and b is the y-intercept
8 0
3 years ago
Read 2 more answers
If you have $23 and you spend $5 on a sandwich, drink, and chips, what fraction of your money did you spend?
Sliva [168]

Answer:

Step-by-step explanation:

23   -    100

5      -     X

23x= 500

x=21%

6 0
3 years ago
Read 2 more answers
Other questions:
  • Sympilfy 31/-8...........
    5·2 answers
  • Write five odd multiples of 3 between 10 and 40
    7·2 answers
  • Ashley bought 4 packages of juice boxs in each package. She. gave 2 juice boxs to each of her friends. How many juice boxes does
    12·1 answer
  • How do you write 31% as a fraction in simplest from
    13·2 answers
  • A math test is worth 100 points and has 30 problems.
    11·1 answer
  • Si un rombo tiene un lado con medida de 16 pulgadas. Cual es su perimetro . If a rhombus has a side measured 16 inches. What is
    13·1 answer
  • The second statement is the ___ of the first
    14·1 answer
  • PLEASE HELP IM STUCK
    11·1 answer
  • A design engineer is mapping out a new neighborhood with parallel streets. If one street passes through (4, 7) and (3, 3), what
    5·1 answer
  • An angle measures 138° less than the measure of its supplementary angle. What is the
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!