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Stells [14]
3 years ago
13

Solve, using the substitution method.

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
Y - 2x = 8 . . . . (1)
16 + 4x = 2y . . (2)

From (1), y = 2x + 8 . . . (3)

Putting (3) into (2) gives
16 + 4x = 2(2x + 8) = 4x + 16
0 = 0

Therefore, there are infinite number of solutions.
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dem82 [27]
Time taken is equal to distance divided by speed
So time is 50/5 = 10 seconds
5 0
4 years ago
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Briana bought 3 bottles of ketchup and 2 bottles of mustard and for $11.85. Logan bought 2 bottles of ketchup and 5 bottles of m
zheka24 [161]
<h2>Answer:</h2><h2>The cost of ketchup bottle, x = 2.89</h2><h2>The cost of mustard bottle, y = 1.59</h2>

Step-by-step explanation:

Let the ketchup be represented as x and mustard as y

Briana  bought 3 bottles of ketchup and 2 bottles of mustard and for $11.85

3x + 2y = 11.85 ...(1)

Logan bought 2 bottles of ketchup and 5 bottles of mustard for $13.73.

2x + 5y = 13.73 ...(2)

Multiplying eq (1) by 2, we get

6x + 4y = 23.7 ...(3)

Multiplying eq (2) by 3, we get

6x + 15y = 41.19 ...(4)

Subtracting eq (3) from (4),

we get 11y = 17.49

y = 1.59, substitute it in eq(1), we get

x = 2.89

Therefore, the cost of ketchup bottle, x = 2.89

The cost of mustard bottle, y = 1.59

3 0
3 years ago
1 3/8 ÷ 1 2/3 <br> quotient in lowest terms
Ivahew [28]

Answer:

=33/40

Step-by-step explanation:

Convert any mixed numbers to fractions.

Then your initial equation becomes:

118÷53

Applying the fractions formula for division,

=11×38×5

=33/40

=33/40

3 0
3 years ago
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zysi [14]
The ratio of 15 cars and 25 trucks is 15/25. If you need to simplify, then the answer is 3/5.
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3 years ago
Algebra question, i would really appreciate any help? :)
mixer [17]

Answer:

A. and C.

Step-by-step explanation:

Look at the point (0, 0) in graph A.

Now look for it in graph B. It has moved to the point (-2, -3).

Point (0, 0) moved 2 units left and 3 units down.

Answer: A. and C.

4 0
3 years ago
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