4 years ago

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Mathematics

1 answer:

lesya692 [45]4 years ago

4 0

Answer:

what?

Step-by-step explanation:

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Simplify the expression 6×2/(-14) + 9 × 2

Ksenya-84 [330]

Use order of operations from left to right
• and / first
+ and - second

[6•2/(-14)]. +(9•2)=
(12/-14)+18=
(-6/7)+ 18•7/7=
(-6+126)/7=
120/7

7 0

3 years ago

Jessica spent 2/5 of her money going to the movies. Then she babysat her brother and earned fifteen more dollars. If she ended u

yanalaym [24]

Answer:

37.50

Step-by-step explanation:

2/5x + 15 = 30

2/5x = 15

x = 15 ( 5/2)

x = 37.50

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3 years ago

Help me please! These are due today.

IrinaVladis [17]

Answer:

${x}^{2} + 3x$

Step-by-step explanation:

Area of shaded region = Area of external rectangle - Area of internal rectangle

$= 4x(x + 2) - x(3x + 5) \\ = 4 {x}^{2} + 8x - 3 {x}^{2} - 5x \\ = 4 {x}^{2} - 3 {x}^{2} + 8x - 5x \\ = {x}^{2} + 3x \\$

Let the width of the rectangle be x inches.

Therefore, length of the rectangle = (x + 3) inches

Area of rectangle

$=(x + 3)\times x\\=x^2 + 3x\\$

Width of rectangle = 4 inches

Length of rectangle = 4 + 3 = 7 inches

Area of rectangle = 7*4 = 28 square inches.

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3 years ago

Michael is constructing and selling birdhouses for a school fundraiser. In order to pay 12b − 120 ≥ 2, 400 b

Pachacha [2.7K]

Answer:

The answer is 120

Step-by-step explanation:

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3 years ago

Observa la siguiente tabla que muestra los precios de un libro de cuentos y sus

QveST [7]

Answer:

No conozco este pero puedo ayudarte con otros

Step-by-step explanation:

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3 years ago