3 years ago

Verify that a+b=b+a by taking a=6 and b=3/6

Mathematics

1 answer:

Klio2033 [76]3 years ago

4 0

Answer:

Step-by-step explanation:

substitute all the numbers in

6+3/6+3/6+6=13

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A bank teller knows that she received 34 dimes and nickels from a customer. If the change totaled $2.05, how many dimes and nick

ivanzaharov [21]

D = # of dimes
n= # of nickles

d + n = 34 so d = 34 - n
.10d + .05n = 2.05

substitute d = 34 - n into .10d + .05n = 2.05

.10d + .05n = 2.05
.10( 34 - n) + .05n = 2.05
3.4 - .1n + .05n = 2.05
-.05n = -1.35
n = 27

d = 34 - n
d = 34 - 27
d = 7

answer

<span>she received 7 dimes and 27 nickels</span>

7 0

2 years ago

Use a model to solve 13 x 4/9 . Leave your answer as an improper fraction.

ivanzaharov [21]

Step-by-step explanation:

13×4/9=52/9

answer as improper fraction is 52/9

3 0

2 years ago

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PLS ANSWER, ALL THE QUESTIONS IN THE PICTURE. ITS DUE SOON PLS HELP, SHOW WHO U SET UP EACH PROBLEM .

saul85 [17]