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antoniya [11.8K]

3 years ago

12

I need a lot of help, I’m really confused on what we are learning currently.

1 answer:

Virty [35]3 years ago

3 0

7m+2=7n−5

Swap sides so that all variable terms are on the left hand side.

7n−5=7m+2

Add 5 to both sides.

7n=7m+2+5

Add 2 and 5 to get 7.

7n=7m+7

Divide both sides by 7.

7

7n

=

7

7m+7

Dividing by 7 undoes the multiplication by 7.

n=

7

7m+7

Divide 7+7m by 7.

n=m+1

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Thank you very much for your help!

Kobotan [32]

For a.
$x^2+y^2=25$

For b.
$(x-4)^2+(y-3)^2=25$

For c.
$(x-5)^2+(y-4)^2=9$

Hope that helps

5 0

3 years ago

What are the significant digits in 0.00025km?

brilliants [131]

Anything between the decimal and last non-zero digit
so 00025 are significant
the 0 in front is insignificant because it could be
00000.00025

zeroes after the 25 don't matter becasue it could be
0.000250000000 and it wouldn't change

the sig figs are 00025

4 0

3 years ago

Read 2 more answers

Find the product (b-2at^2)(3b-3at^2)

Maurinko [17]

Answer: $3b^2-9bat^2+6a^2t^4$

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

- Apply the Distributive property.

- Remember that, according the exponents properties, when you multiply two powers with equal base, you must add the exponents.

- Add the like terms.

Therefore, you obtain that the product is the following:

$(b-2at^2)(3b-3at^2)=3b^2-3bat^2-6bat^2+6a^2t^4=3b^2-9bat^2+6a^2t^4$

8 0

3 years ago

Read 2 more answers

A menu has three meat choices, three vegetable choices and two

Paha777 [63]

Answer:

18 ways

Step-by-step explanation:

The computation of the number of ways that could be choose your dinner as follows:

= 3 meat choices × 3 vegetable choices × 2 desserts

= 18 ways

By multiplying all the three things we can determined the number of ways

8 0

2 years ago

In your own words what is the difference between an 'Equation' and 'Inequality' ?

goblinko [34]

An equation is a math problem that must be solved to find out to find out a difference, quotient, sum, or product.

An inequality is a math problem that must be solved to find out what the difference is between two numbers.

6 0

2 years ago