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erik [133]
3 years ago
13

Please help with this simultaneous equation you can use any method(Only number 6)

Mathematics
1 answer:
igomit [66]3 years ago
4 0

Answer:

Pencil: $0.60 Rubber: $0.48

Step-by-step explanation:

Let the cost of a pencil be p and the cost of a rubber be r.

p+r=1.08  (Equation 1)

4p=5r  (Equation 2)

Divide both sides by 4:

p=\frac{5}{4} r

Substitute this into Equation 1:

\frac{5}{4} r+r=1.08

Multiply both sides by 4:

\frac{5}{4}r* \:4+r* \:4=1.08*4

5r+4r=4.32

9r=4.32

Divide both sides by 9:

\frac{9r}{9}=\frac{4.32}{9}

r=0.48

Since r + p = 1.08,

p=1.08=0.48=0.60

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WITCHER [35]

Answer:

Step-by-step explanation:

In y = mx + b form, the slope can be found in the m position and the y intercept can be found in the b position.

4x - 2y = -6

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y = (-4/-2)x -(6/-2)

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3 0
3 years ago
Please help with this problem ​
Svetlanka [38]
The answer should be 25.64$
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6 0
3 years ago
Read 2 more answers
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kirza4 [7]
Answer: $2.26
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4 0
3 years ago
A medication is 69 % effective against a bacterial infection. Find the probability that if 8 people take the medication at least
Sauron [17]

Answer:

5.52%

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3 0
2 years ago
What is the probability of choosing a
sladkih [1.3K]

Answer:

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Step-by-step explanation:

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you have 12 pennies, 19 nickles, 14 dimes, and 15 quarters. This adds up to a total of 60 coins. Twelve of those are pennies.

You have twelve possible pennies to choose at random from a total of 60 in a bag.

So 12/60/ This simplifies to a probability of 1/5. If you divide 1 by 5 than it would be 0.2

The probability of choosing a penny from a bag of coins is 1/5, or 0.2.

Hope this helps

3 0
2 years ago
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