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Rufina [12.5K]
3 years ago
15

Which of the following sets of ordered pairs would be

Mathematics
2 answers:
Svetlanka [38]3 years ago
7 0
I think it’s D, cuz the numbers don’t repeat in that one but they do in everything else
luda_lava [24]3 years ago
6 0

Answer:

B & D his answer to the problem

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Kristen has 64 coins in her bank. She has $9.25 in dimes and quarters. How many dimes and quarters does she have?
Stella [2.4K]
D= # of dimes
q= # of quarters

QUANTITY EQUATION:
d + q= 64

COST EQUATION:
0.10d + 0.25q= $9.25


STEP 1:
multiply quantity equation by -0.10 to be able to eliminate the d term in step 2

(-0.10)(d + q)= (-0.10)(64)
-0.10d - 0.10q= -6.40


STEP 2:
add equation from step 1 to cost equation to eliminate the d term and solve for q

Add
0.10d + 0.25q= $9.25
-0.10d - 0.10q= -6.40

0.15q= 2.85
divide both sides by 0.15

q= 19 quarters


STEP 3:
substitute q value in step 2 into either original equation to find d value

d + q= 64

d + 19= 64
subtract 19 from both sides

d= 45 dimes


CHECK:
0.10d + 0.25q= $9.25
0.10(45) + 0.25(19)= 9.25
4.50 + 4.75= 9.25
9.25= 9.25


ANSWER: There are 45 dimes and 19 quarters.

Hope this helps! :)
7 0
3 years ago
HELP I DONT UNDERSTAND HOW TO DO THIS TYPE OF PROBLEM I FORGOT. please give a good explanation
Levart [38]

Answer:

i have no idea sry man lol

Step-by-step explanation:

no idea

7 0
2 years ago
PLEASE ASAP QUICK THX​
never [62]

Step-by-step explanation:

\bf \huge \red{Answer:-}

7 0
2 years ago
1/3 kilogram to 2/3 of a foot
HACTEHA [7]

Answer: idk dont know need more info

Step-by-step explanation:

5 0
3 years ago
Question 3: Which of the following constructions would help to construct a line passing through point C that is perpendicular to
lakkis [162]

Answer:

Construction of a perpendicular bisector through C

Step-by-step explanation:

i just did the problem and put in that answer on bakpax and got it right

3 0
3 years ago
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