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3 years ago

describe how you know that (8 + 9) +3 is equilevant to 8+ (9 + 3). What is the benefit to using this property?

1 answer:

4 0

We know that it is equivalent because of the use of the associative property . The property is beneficial because it makes equations easier to compare .

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Which ratios form a proportion ? 1 / 6 & 3/8? 2/3 & 8/12? 2/5 or 5/2? or . 3/4 & 9/16?

lapo4ka [179]

2/3 & 8/12
3/4 & 9/16

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3 years ago

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RideAnS [48]

Answer: HI ^_^

your answer will be D. (2x+3)(4x^2-6x+9)

Step-by-step explanation:

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3 years ago

Read 2 more answers

When the sun has risen 32 degrees above the horizon, Sandy casts a shadow that is 9 feet 2 inches long. How tall is Sandy, to th

Makovka662 [10]

Answer:

The height of Sandy is 68.74 inches.

Step-by-step explanation:

It is given that the sun has risen 32 degrees above the horizon. It means the angle of elevation is 32°.

Let the height of Sandy be x.

Sandy casts a shadow that is 9 feet 2 inches long.

We know that 1 feet = 12 inches

Using this conversion, we get

Shadow = 9 feet 2 inches = 9(12)+2 = 110 inches

In a right angled triangle,

$\tan\theta =\frac{perpendicular}{base}$

In triangle ABC,

$\tan(\angle C)=\frac{AB}{BC}$

$\tan(32^{\circ})=\frac{x}{110}$

Multiply both sides by 110.

$110\tan(32^{\circ})=x$

$68.73562871=x$

$x\approx 68.74$

Therefore the height of Sandy is 68.74 inches.

8 0

3 years ago

What is the approximate volume of the sphere

NISA [10]

Answer:

523.33 mm³

Step-by-step explanation:

The general formula for the volume of a sphere is:

V = $\frac{4}{3}\pi r^{3}$

The radius for the given sphere is 5mm, so plugging that value into the equation and using 3.14 for π:

V = $\frac{4}{3}(3.14)(5^{3})$

V ≈ 523.33 mm³

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3 years ago

What are the coordinets?

liraira [26]

Answer:

numbers that are plotted on a graph

Step-by-step explanation:

examples:

(2,8) this is a coordinate

(4,16)

(5,25)

3 0

3 years ago