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ipn [44]
3 years ago
13

Variable a is 4 more than variable b. Variable a is also 1 less than b. Which of the following pairs of equations best models th

e relationship between a and b?
a = b + 4
a = b − 1
a = 4b
a = b + 1
b = a + 4
b = a − 1
b = 4a
b = a + 1
Mathematics
1 answer:
Elis [28]3 years ago
4 0
B=a+4 that is what the answer will be.
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The sum of two numbers is 39 and the difference is 3. What are the numbers?
frosja888 [35]

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

3+y+y=39

3+2y=39

2y=39-3

2y=36

Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

8 0
3 years ago
an art teacher has 28 students in her first period class and 24 in her second period class if almost 30 of the students in these
tatiyna

Answer:

im not sure if this answer is correct but i think its 22

6 0
3 years ago
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There are $1.95 worth of nickels and quarters in a piggy bank there are three more nickels than quarters how many of each are in
Gennadij [26K]

Answer:

6 quarters and 9 nickels

Step-by-step explanation:

6 quarters is equal to $1.50. 6 nickels is equal to $0.30. Those together equal $1.80, then add the three nickels bringing your total to $1.95.

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3 years ago
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Answer four of these question and you will be the brainliest. Answer this with solution please
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(1) -1.79, 2 1/4, 2.54 , -4

negative -> positive

reorder: -4. -1.79, 2 1/4 (or 2.25), 2.54

(2) -x

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BUT the larger after the minus the more you owe so Renae owes more.

(3)

sorry idk

(4)

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3 years ago
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uysha [10]
5 packages of spoons and and 4 packages of forks
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3 years ago
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