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zvonat [6]
3 years ago
9

Write a phrase as a algebraic expression.4 times the sum of a number and 20.

Mathematics
1 answer:
Deffense [45]3 years ago
4 0

4(20 + x)

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

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If the base of a triangle is represented by 2x+5 and the height is represented by 4x which expression represents the area of the
madreJ [45]

Answer:

The answer is D

Step-by-step explanation:

You use base times height

1/2bh

=1/2(2x+5)(4x)

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2 years ago
Expand to write an equivalent expression: 4(-8x+6y)
Naddika [18.5K]

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-32x + 24y

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3 years ago
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Tilda is growing herbs from seeds. The heights of the herbs after one week are shown. Which plant is the tallest at the end of t
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2 years ago
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Of 560 marbles in a bag, 65% are red and the rest are blue. After 28 red marbles are replaced with blue ones, how many blue marb
jonny [76]

Answer:  The answer is 400  blue marbles.


Step-by-step explanation: Given that there are 560 marbles in a bag, out of which 65% are red and rest are blue.

So, number of red marbles is

n_r=65\%\times 560=\dfrac{65}{100}\times 560=364,

and number of blue marbles is

n_b=560-364=196.

Now, if 28 red marbles are replaced by blue marbles, the the new number of red and blue marbles will be

n_r^\prime=364-28=336~~~\textup{and}~~~n_b^\prime=196+28=224.

Now, to get 65% of the marbles blue, we need to add some more blue marbles to the bag. Let 'x' number of blue marbles are added to the bag, then

65\%\times (560+x)=224+x\\\\\Rightarrow \dfrac{65}{100}\times (560+x)=224+x\\\\\Rightarrow 13(560+x)=20(224+x)\\\\\Rightarrow 7280+13x=4480+20x\\\\\Rightarrow 7x=2800\\\\\Rightarrow x=400.

Thus, 400 blue marbles need to be added to the bag.


5 0
3 years ago
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I NEED HELP PLEASEEEEEEEEEEE I CANT DO IT PLEASE JELP ASAP
Ksivusya [100]

Answer:

D: its 18

Step-by-step explanation:

I yeeted it into a calculator

6 0
3 years ago
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