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anygoal [31]
3 years ago
12

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x

Mathematics
1 answer:
cricket20 [7]3 years ago
6 0

Answer:

The test contains 10 three-point questions and 14 five-point questions.

Step-by-step explanation:

x + y = 24

3x + 5y = 100

Try elimination.

-3x - 3y = - 72

2y = 28

y = 14

Then x = 10

So, we have 10  3-point problems  and 14 5-point problems.

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If a pen and a pencil cost 1.10$ but the pen cost is 1$ more than pencil​
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Answer:

The pencil cost $0.05 and the pen cost $1.05.

Step-by-step explanation:

Let, the price of the pencil is $ .

Given that the pen costs a dollar more than the pencil,

So, the price of the pen=$+1.

Therefore, ++1=1.10

, 2+1=1.10

, 2=1.10–1

, 2=0.10

, =0.10/2

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The pencil cost $0.05 and the pen cost $1.05.

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2 years ago
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Answer:

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This banana is 8 inches long. How many 0.4 inches slices of banana can be cut from this banana?
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