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givi [52]
3 years ago
15

Help please (ty to the people who know this) :)

Mathematics
2 answers:
notsponge [240]3 years ago
4 0

Answer:

C) 3c-5d

Step-by-step explanation:

-c+5d+7c-11d+d-3c

Group the similar terms together:

-c+7c-3c+5d-11d+d

Add/subtract the "c" variables:

3c+5d-11d+d

Add/subtract the "d" variables:

3c-5d

Lapatulllka [165]3 years ago
3 0

Answer:

The answer is C) 3c-5d

Step-by-step explanation:

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Pani-rosa [81]

Answer:

The answer is...

Step-by-step explanation:

45.169

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3 years ago
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Look at picture. Does anybody know the answer I’m lost?
masha68 [24]

Let x,y be the dimensions of the rectangle. We know the equations for both area and perimeter:

A=xy=36

P=2(x+y)=36 \iff x+y=18

So, we have  the following system:

\begin{cases}xy=36\\x+y=18\end{cases}

From the second equation, we can deduce

y=18-x

Plug this in the first equation to get

xy=x(18-x)=-x^2+18=36

Refactor as

x^2-18x+36=0

And solve with the usual quadratic formula to get

x=9\pm3\sqrt{5}

Both solutions are feasible, because they're both positive.

If we chose the positive solution, we have

x=9+3\sqrt{5} \implies y=18-x=18-9-3\sqrt{5}=9-3\sqrt{5}

If we choose the negative solution, we have

x=9-3\sqrt{5} \implies y=18-x=18-9+3\sqrt{5}=9+3\sqrt{5}

So, we're just swapping the role of x and y. The two dimensions of the rectangle are 9+3\sqrt{5} and 9-3\sqrt{5}

6 0
3 years ago
there are 2 cups of flour in a batch of pancakes. many is making 3/2 batches . how can many tell if he needs more or fewer than
Sedaia [141]

Answer: Manny is making 3/2 batches, which is equivalent to 1.5, it's more than one. So, Manny is making more than 1 batch. According to the problem, 2 cups of flour in a batch, if he's making 1.5 batch, he would need 3 cups of flour, which is more than 2 cups of flour.

Step-by-step explanation:

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3 years ago
An orchard produced 856.9 liters of fresh-squeezed orange juice over the course of 4 days. How much orange juice was produced ea
Tamiku [17]

Answer:

214.225

Step-by-step explanation:

865.9 / 4 = 214.225

you just divide it

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3 years ago
Are adding, subtracting, multiplying and dividing fractions part of Analytical Mathematics and Discrete Mathematics?
Kruka [31]
No they are part fundamental mathematics
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4 years ago
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