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4 years ago

How do I do solving systems of equations by substitution?

Mathematics

1 answer:

alexdok [17]4 years ago

5 0

Step 1:Solve one of the equations for either x = or y = .

Step 2:Substitute the solution from step 1 into the other equation.

Step 3:Solve this new equation.

Step 4:Solve for the second variable.

I hope this helps!

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A sandwich shop sells sandwiches for $5.00 each (tax included). On Friday afternoon, the shop received a total of $75.00 for the

matrenka [14]

Answer:

75/5=x

Step-by-step explanation:

take the total sales divided by the unit price to give you the number of units

4 0

3 years ago

Which graph represents a function

FromTheMoon [43]

Answer:

Not really an answer just warning you didn't actually attach a graph

4 0

3 years ago

Molly opened a savings account with a one‐time deposit of $100 that will be left in the account for at least 5 years. The saving

Anettt [7]

The amount of interest Molly will earn after 5 years on a deposit of $\$100$ compounded annually over 5 years is $\$27.63$

First, we need to find the future value of her investment, then we subtract the original deposit from it to get the amount of interest she will get at the end of 5 years.

The future value of an investment that is compounded annually is given by

$A=P(1+r)^t$

where

$A=\text{Amount of money in Molly's account after 5 years}\\P=\text{Molly's initial deposit into her account}=\$500\\r=\text{The annual interest rate as a decimal}=0.05\\t=\text{The time the money is invested (in years)}=5$

Substituting the available values into the formula and solving

$A=100(1+0.05)^5=100(1.05)^5 \approx \$ 127.63$

The interest Molly will earn after 5 years is

$A-P=\$127.63-\$100=\$27.63$

Therefore, the amount of interest Molly will earn after 5 years on a deposit of $\$100$ compounded annually over 5 years is $\$27.63$

Learn more about compound interest here: brainly.com/question/21270833

8 0

3 years ago

Round 0.172 to the nearest hundredth.

aleksandr82 [10.1K]

It is <span>Round 0.172 to the nearest hundredth.</span>

8 0

3 years ago

Read 2 more answers

Find the distance between the pair of points: (6,−3) and (1,0

rosijanka [135]

Hi there!

»»————-　★　————-««

I believe your answer is:

$\sqrt{34}$

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

$\text{\underline{The distance formula is:}}\\\\d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

⸻⸻⸻⸻

$\boxed{\text{Calculating the answer....}}\\\\d = \sqrt{(1-6)^2+(0-(-3))^2}\\--------------\\\rightarrow d = \sqrt{(-5)^2+(3)^2}\\\\\rightarrow d = \sqrt{(25+9)}\\\\\rightarrow d =\boxed{ \sqrt{34} }$

⸻⸻⸻⸻

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

6 0

3 years ago