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Sunny_sXe [5.5K]
3 years ago
15

PLZ HELP ME

Mathematics
1 answer:
Luda [366]3 years ago
8 0

Answer:

3x³y - 2x²y²+ xy³

Step-by-step explanation:

Distribute

<em>6xy</em> · 1/2x²

6 × 1/2 = 3

x · x² = x³

y = y

3x³y

<em>6xy</em> · - 1/3 xy

6 · 1/3 = 2

x · x = x²

y · y = y²

- 2x²y²    (do not forget sign)

<em>6xy</em> · 1/6 y²

6 · 1/6 = 1

x = x

y · y² = y³

xy³

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The length of a rectangle is three more than twice its width the perimeter of a rectangle is 42 cm what is the length of the rec
Maurinko [17]

Answer:

The length of the rectangle is 15 cm.

Step-by-step explanation:

breadth(b)=?

length(l)= 3+2b

perimeter(P)= 42 cm

Now,

  P = 2 ( l+b )

or, 42= 2 ( 3+2b+b)

or, 42 = 2 ( 3+3b)

or, \frac{42}{2} = 3+3b

or, 21 = 3+3b

or, 21-3 =3b

or, 18 = 3b

or, \frac{18}{3} = b

or, 6 = b

Here, Breadth(b)= 6 cm

Length (l) = 3 + 2*6

              = 3 + 12

              =15 cm

5 0
3 years ago
Solve the inequality<br><br> 1≥−y/4
scoundrel [369]

Answer:

y≥-4 or (-4,∞)

Step-by-step explanation:

6 0
3 years ago
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The record high temperature in Alabama is 112°F and the record low temperature is −27°F. What is the difference between the high
Minchanka [31]

The difference between the highest and lowest temperature is 85°F.

7 0
3 years ago
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PLEASE PLEASE PLEASE HELP ME
lubasha [3.4K]

Answer:

CE = 17

Step-by-step explanation:

∵ m∠D = 90

∵ DK ⊥ CE

∴ m∠KDE = m∠KCD⇒Complement angles to angle CDK

In the two Δ KDE and KCD:

∵ m∠KDE = m∠KCD

∵ m∠DKE = m∠CKD

∵ DK is a common side

∴ Δ KDE is similar to ΔKCD

∴ \frac{KD}{KC}=\frac{DE}{CD}=\frac{KE}{KD}

∵ DE : CD = 5 : 3

∴ \frac{KD}{KC}=\frac{5}{3}

∴ KD = 5/3 KC

∵ KE = KC + 8

∵ \frac{KE}{KD}=\frac{5}{3}

∴ \frac{KC+8}{\frac{5}{3}KC }=\frac{5}{3}

∴ KC + 8 = \frac{25}{9}KC

∴ \frac{25}{9}KC - KC=8

∴ \frac{16}{9}KC=8

∴ KC = (8 × 9) ÷ 16 = 4.5

∴ KE = 8 + 4.5 = 12.5

∴ CE = 12.5 + 4.5 = 17

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3 years ago
Rachel types
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Answer:

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Step-by-step explanation:

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