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Lostsunrise [7]
2 years ago
14

May someone please help me with this ill give brainlyest if i figure out how to

Mathematics
2 answers:
Otrada [13]2 years ago
8 0

Answer: 5

Step-by-step explanation:

5x3+6=21

5x5=25

25-21=4

tresset_1 [31]2 years ago
7 0

Let "the number" = n

6 + 3n = 5n - 4

6 + 3n - 5n = -4

6 - 2n = -4

-2n = -10

n = 5

Check my work:

Six added to 3 times (5) is equal to 4 less than 5 times (5)

Six added to 15 is equal to 4 less than 25

21 is equal to 21

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What number must you add to complete the square x^-8x=39
notsponge [240]

Answer:

Given equation: x^2-8x =39

when we complete the square , we take half of the value of 8 , then square it, and added to the left sides, we get;

x^2-8x+4^2 = 39 +4^2

∵8 is the value (\frac{8}{2})^2

Notice that, we add this both sides so that it maintains the equality.

then;

x^2-8x+4^2 = 39 +4^2

(x-4)^2 = 39 + 16   [ (a-b)^2 = a^2-2ab+b^2 ]

Simplify:

(x-4)^2 =55

The number must be added to complete the square is, 4^2 = 16



3 0
3 years ago
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7 0
2 years ago
Ok part 2 hey hey it jassie can you answer all my parts and other people to ok here it is
MissTica
0.368 in expanded form would be...

0.000 + 0.300 + 0.060 + 0.008
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Answer:

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Step-by-step explanation:

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3 years ago
Work Out The Area Of The Shape:<br><br> (Picture is shown in attachment)
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Answer:

<h2><u>Solution</u><u> </u><u>:</u><u>-</u></h2>

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Area = ½ (3 + 6) × 4

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Area = 9 × 2

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2 years ago
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