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swat32
4 years ago
9

Lawrence buys his friends candy in the morning for $4 a box, but forgot some of his friends, so he went back to the candy shop a

nd purchased the same candy but they had increased in price. He paid $5 a box. Let t represent the number of boxes of candy Lawrence purchased. Write an expression that represents these purchases.
Mathematics
1 answer:
Alex787 [66]4 years ago
6 0

He purchased "t" boxes for $4 and then went back later and purchased "t" boxes for $5.

4t + 5t

4t +5t = 9t

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Kyra is traveling to Canada and will exchange $250 into Canadian dollars. The current exchange rate of $1 US is equal to $1.03 C
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Answer:

She will get $275.50 in return

Step-by-step explanation:

250 x 1.03 = 257.50

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3 years ago
Tammy deposited $520 in the bank account that earns simple interest every year after 5 years she had earned $156 and interest if
aleksley [76]

Answer:

6%.

Step-by-step explanation:

We have been given that Tammy deposited $520 in the bank account that earns simple interest every year after 5 years she had earned $156.

To find the interest rate we will use simple interest formula.

I=P*r*T

I= Interest.

P= Principal amount.

r=Annual interest rate (in decimal form).

T= Time in years.

We have been given that I=156, T=5, P=520

Upon substituting our values in above formula we will get,

156=520*r*5

156=2600r

r=\frac{156}{2600}

r=0.06

Let us multiply 0.06 by 100 to convert annual interest rate in percentage.

0.06*100=6 \text{ percent}

Therefore, the annual interest rate was 6%.

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4 years ago
What is the area of a triangle that has a
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Answer:

A. 45 in

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3 years ago
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3 years ago
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Answer:

A - 0%

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Step-by-step explanation:

Cystic fibrosis is inherited in an autosomal recessive form, meaning that a person has to inherit two abnormal genes for the disease to manifest. In the case of this question, one parent is a gene carrier, so his genotype is Aa, while the other does not have the cystic fibrosis gene, so AA.

Performing the cross of Aa x AA, we can see that:

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c.) The probability of a child would not have cystic fibrosis and is not a carrier is 50%, as 50% of the child's genotype is AA.

d.) The probability of a child would be healthy is 100%, as of all possible phenotypes none is affected.

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3 years ago
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