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2 years ago

Please help me. I will make Brainliest

Mathematics

1 answer:

miv72 [106K]2 years ago

7 0

I believe the correct answer is D

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You deposit $50 in your saving account. One week later, you withdraw $20. Write each amount as an integer.

Tju [1.3M]

Answer:

Depositing means that you added 50$ to your account. This means that you account increased by an amount of 50.

The integer describing this is +50.

Then, withdrawing means that you took money from the account. This means that your account decreased by an amount of 20.

This can be expressed as a -20 integer.

3 0

3 years ago

Solve for 5^3????????

Archy [21]

Answer:

125

Step-by-step explanation:

5*5*5

7 0

3 years ago

Help fast pls I need to pass

ella [17]

Answer:

help with what? you can tell me and I would be glad to answer.

Step-by-step explanation:

5 0

3 years ago

In a class of P students, the average of test scores is 70. In another class the average test scores is 92. When scores of the t

Basile [38]

So, since averages are defined as:

$\frac{\sum_{k=1}^{P} P_k}{P}=70$

So, since P are the total number of elements and P_k is the P_kth student. This is saying if we sum over each student's score and divide it by the number of students, we should get P, which is true.

So, using that logic, the other class can be represented as:

$\frac{\sum_{k=1}^{N} N_k}{N}=70$

We can take both of these equations and multiply them by N:

$\sum_{k=1}^{P} P_k=70P$

$\sum_{k=1}^N N_k=92N$

So, if we want to find the average of this we should add both our equations then divide by P+N, which is the number of all the students.

$\frac{\sum_{k=1}^{P} P_k+\sum_{k=1}^{N}N_k}{N+P}=\frac{70P+92N}{N+P}$

To make this simpler we can replace our LHS with 86, since that's the average of both classes combined.

$86=\frac{92N+70P}{N+P} \implies\\ 86N+86P=92N+70P \implies \\ 16P=6N \implies \\ \frac{16P}{N}=6 \implies \\ \frac{P}{N}=\frac{6}{16}$

Simplified we would have P/N=3/8.

7 0

3 years ago

3/7×4 find the product in simplest form

Veronika [31]

It cant simplest form

7 0

3 years ago

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