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Paraphin [41]
3 years ago
9

Megan has 2 red marbles, 7 blue marbles, and 8 yellow marbles. What is the ratio of red marbles to blue marbles in rational numb

er form?
Mathematics
1 answer:
melisa1 [442]3 years ago
4 0
Gg bdnjfhfncjfkfkfmfmmf
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How to solve number 1?
Archy [21]
E(x)=5(x-1)(x+2)-(x+2)^2\\\\1)\ 5(x^2+2x-x-2)-(x^2+2x\cdot2+2^2)\\=5(x^2+x-2)-(x^2+4x+4)\\=5x^2+5x-10-x^2-4x-4\\=4x^2+x-14\neq4x^2+x+1\\\\2)\ E(x)=1\ for\ E(x)=4x^2+x+1\\\\4x^2+x+1=1\ \ \ \ |subtract\ 1\ from\ both\ sides\\4x^2+x=0\\x(4x+1)=0\iff x=0\ \vee\ 4x+1=0\\x=0\ \vee\ 4x=-1\\\boxed{x=0\ \vee\ x=-0.25}

3)\ H(x)=9x^2-(2x+1)^2\\\\a.\ H(x)=(3x)^2-(2x+1)^2=[3x-(2x+1)](3x+2x+1)\\=(3x-2x-1)(5x+1)=(5x+1)(x-1)\\\\b.\ H(x)=0\\\\(5x+1)(x-1)=0\iff5x+1=0\ \vee\ x-1=0\\5x=-1\ \vee\ x=1\\\boxed{x=-0.2\ \vee\ x=1}
5 0
3 years ago
Which compound inequality can be represented by the graph below?
steposvetlana [31]

Answer:

The answer to your question is: letter D

Step-by-step explanation:

The interval graph is (5, 9] , open five, nine close. As an inequality this interval is:

                                   5 < x ≤ 9

a) Letter A is incorrect because it suggests that two sections in the graph must be shaded and in this graph there is only one section shaded.

b) Letter B is incorrect because in the graph we observe that before 5 there must be a parenthesis because the point is open and the point in 9 is shaded so it must be follow by a ].

c) Letter c is alos incorrect because it suggests two sections shaded in the graph and it shows only one.

3 0
3 years ago
Read 2 more answers
H - 8 = 2; 28 tell whether the given number is a solution to the equation
murzikaleks [220]
H-8=2. The only solution to that equation is H=10. Any other number isn't.
8 0
3 years ago
What is the value of the expression below when x=10x=10 and y=4y=4? 8x-7y 8x−7y
noname [10]

Answer:

X=10x =10

means here value of X is 1

y = 4y = 4

means here value of y is also 1

now substitute the values of X and y in the equation

8×1-7×1×(8×1-7×1)

8-7(8-7)

64-49

15

8 0
3 years ago
Circle X is shown. Points W, Y, and Z are on the circle. Lines are drawn through each point on the circle.
Dimas [21]

Answer:

Its point X

Step-by-step explanation:

Just did it on edge 2020

6 0
4 years ago
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