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labwork [276]
3 years ago
5

Which expression is equivalent to 3 + 4y – y(9 – 2y) + 5?

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0

Answer:

C.


Step-by-step explanation:

Because the expression simplified is 2y^3-5y+8, so the answer is C.

Hope this helps! :)

~Angel


anygoal [31]3 years ago
8 0

Answer:

The expression 3 + 4y – y(9 – 2y) + 5 is equivalent to 2y² -5y + 8  .

Option (B) is correct .

Step-by-step explanation:

As the expression given in the question be

=  3 + 4y – y(9 – 2y) + 5

First open the bracket

=  3 + 4y – 9y +2y² + 5

= 2y² -5y + 8

Therefore the expression 3 + 4y – y(9 – 2y) + 5 is equivalent to 2y² -5y + 8  .

Option (B) is correct .

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#10: find angle x and y!<br> Im struggling so much with this question please help a gurl out!
hjlf

Answers:

x = 100

y = 25

==============================================================

Explanation:

Angle y and the 25 degree angle are corresponding angle. Because the lines are parallel, this means that y = 25

Check out the attached image. Using a red pen, I extended one of the lines to form a triangle. From the alternate interior angle theorem, we know that one of the angles of the triangle is 75 degrees (alternate interior angles are congruent). Again this stems from the fact that the lines are parallel.

I've also introduced the variable z to help find x. The angles x and z add up to 180 degrees since they form a straight line. So we need to find z before we can find x.

The triangle's angles 25, 75, z add up to 180. Let's solve for z

25+75+z = 180

100+z = 180

z = 180-100

z = 80

Use this to find x

x+z = 180

x+80 = 180

x = 180-80

x = 100

4 0
3 years ago
Find two numbers whose difference is 154 and whose product is a minimum.
Serggg [28]
Y - x = 154
let z = xy = x(154 + x) = x^2 + 154x

we need to find the minimum value of z

z' =   2x + 154  which = zero for minm or maxm value

x = -77   and y = 154 -77 = 77

so the 2 numbers are -77 and 77




7 0
3 years ago
Keep answer in fraction form. Use &lt; &amp;&gt; in your solution set. Solve for b.Give an exact answer in simplified form. 30b
Fed [463]
I do not know the answer but i need to answer a question in order to ask one,sorry,hope u understand:/
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3 years ago
The number - 12/16 can be reduced as​
liberstina [14]

Answer:

3/4

Step-by-step explanation:

<u>1</u><u>2</u> divide 4 <u>3</u>

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Step-by-step explanation:

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