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
WARRIOR [948]
3 years ago
10

tess has 100 dimes and quarters , if the total of the coins is $21.40 how many of each of the coins does she have ?? Using subst

itution or elimination find the answer
Mathematics
1 answer:
Zanzabum3 years ago
4 0

Answer: 24 and 76

Step-by-step explanation:

{

d

+

q

=

100

10

d

+

25

q

=

2140

From the first equation, we have  

d

=

100

−

q

Substituting that into the second equation, we have

10

(

100

−

q

)

+

25

q

=

2140

⇒

1000

−

10

q

+

25

q

=

2140

⇒

15

q

=

1140

⇒

q

=

1140

15

=

76

Knowing that  

q

=

76

we can substitute that value into the first equation to obtain

d

+

76

=

100

∴

d

=

24

Thus, Sue has  

24

dimes and  

76

quarters.

You might be interested in
The sum of the percent frequencies for all classes will always equal:
PSYCHO15rus [73]
It will equal 12 or 13
8 0
3 years ago
Can somebody help me plz
STALIN [3.7K]

Answer:

adjectives

Step-by-step explanation:

There is more of the big number

4 0
3 years ago
the scale model of a skyscraper being built is 4.2 feet tall when it is finished the skyscraper will be 525 meters tall what sca
ss7ja [257]
To determine the scale both measurements must be in the same unit, either feet or meters. 1 meter = 3.28084 feet525 meters = 1722.441 feet Scale is 4.2 / 1722.441, or 0.00243839992 1 foot = 0.3048 meters4.2 feet = 1.28016 meters 1.2801 / 525 = 0.0024389992

Hope This Helped :)
4 0
4 years ago
Help me for this question
AlladinOne [14]
4 + 3 + 6 = 13 
therefore the money she got from selling the curry puffs  = 4/13 * 273 = $84

That = 84 / 0.65 = 129 curry puffs
As this is half of the total ,  she  made 258 curry puffs.  Answer.
4 0
3 years ago
The place value of 2 in 5.32 is​
kondor19780726 [428]

Answer: hundredths

Step-by-step explanation:

The second number past the decimal point is the hundredths place

8 0
3 years ago
Read 2 more answers
Other questions:
  • The sum of 2/5 of c and 1/5 of w - 9
    11·1 answer
  • A container shaped as a rectangular prism can hold 840 wooden cube blocks with edge lengths of 12 ft. What is the volume of the
    13·1 answer
  • What metric unit would be used to measure a baseball bat
    7·1 answer
  • How can you use your answer to problem to find the product of 7 × 6?​
    15·2 answers
  • What is 2/3+1/4 please answer immediately
    6·2 answers
  • Cuanto es la raíz cuadrada de 3
    11·1 answer
  • What is the equation of a line that passes through (4,3) and has a slope of 2?
    9·1 answer
  • Which Is NOt A function
    14·1 answer
  • Your class is in groups, working on a combinatorics worksheet. One of the questions asks how many possible ways 5 books out of a
    13·1 answer
  • Identify the statement that uses the verb mood in the interrogative. will give brainliest
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!