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Colt1911 [192]
2 years ago
9

Select all expressions that are equivalent to 5n-30

Mathematics
1 answer:
mamaluj [8]2 years ago
8 0

Answer: everything EXCEPT 5(n-30)

Step-by-step explanation:

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How many solutions does the equation −6a + 6a + 5 = 8 have? One Two No solution Infinite solutions
umka21 [38]
<span>−6a + 6a + 5 = 8 
5 = 8  False

So, </span><span>No solution.</span>
5 0
3 years ago
Who replaced circles with ellipses in a heliocentric model of the universe
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7 0
2 years ago
I made some brownies and cookies to sell for a local fundraiser. The cookies sold for $0.75 each and the brownies sold for $1.25
juin [17]

Answer:

Brownies made the most money

Step-by-step explanation:

Let c = cookies

b = brownies

We sold 51 items  so c+b = 51

Cookies are .75  and brownies are 1.25

.75c + 1.25 b = 53.25

We have 2 equations and 2 unknowns

c = 51-b

Substituting into the second equation

.75(51-b) + 1.25b = 53.25

Distribute

38.25-.75b +1.25b = 53.25

Combine like terms

38.25+.5b = 53.25

Subtract 38.25 from each side

38.25 +.5b -38.25 = 53.25 -38.25

.5b =15

Divide each side by .5

.5b/.5 = 15/.5

b = 30

Now find c

c =51-b

c = 51-30

c = 21

They sold 30 brownies and 21 cookies

30 brownies * 1.25 =37.50

21 cookies *.75 = 15.75

Brownies made the most money

3 0
3 years ago
I need help plss!! I don’t understand
MA_775_DIABLO [31]

Since it says what the area of the circle is, you need to work the problem backwards from finding the area. So it would be 100 ÷ 3.14 = 31.84 that is the radius. Next you need to find the diameter, so 31.84 × 2 = 63.68. Now you multiply 63.68 × 3.14 = 199.95, round that to 200, divide 200 ÷ 2 = 100 ÷ 2 = 50 miles

Answer= 50 miles

4 0
3 years ago
-37= n/23<br> what is n?
Vlada [557]
-37 = <u>n
</u>       23
<u>
</u>to solve for n, undo what is happening to the n. if the n is being divided by 23 to get -37, then multiply both sides by 23 to figure out what n is. 
<u>
</u>-37 * 23 = <u>n * 23 
</u>                   23
<u>
</u>-851 = n
3 0
3 years ago
Read 2 more answers
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