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3 years ago

Write "3 x 3 x 5 x 5" in exponential form.

Mathematics

2 answers:

Ronch [10]3 years ago

6 0

$\huge\boxed{\mathfrak{Answer}}$

In exponential form :-

$3 \times 3 \times 5 \times 5 \\ = {3}^{2} \times {5}^{2}$

Tomtit [17]3 years ago

4 0

Answer:

225xxx 3

Step-by-step explanation:

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Sarah and her friends laid down two beach blankets. The blankets are the same length but of different widths. The distributive p

Masja [62]

Answer:The width of the orange blanket is 23 inches.

Step-by-step explanation:

The total of both lengths is 75.We know that the green blanket is 52 so 75-52 = 23 which is the width of the orange blanket

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jasenka [17]

Answer:

See attached images.

Step-by-step explanation:

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3 years ago

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erma4kov [3.2K]

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3 years ago

bette drives at 60 mph for 2 and a half hours and 75 mph for 1 and a half hours. What is her average rate of speed?

andrezito [222]

There are a couple of ways to think about this.

1) Weight the speed by the time and compute the weighted average.
(60*2.5 + 75*1.5)/(2.5 + 1.5) = 65.625
Her average rate of speed is 65.625 mph.

2) Consider distance and time.
distance = speed * time
distance₁ = speed₁ * time₁
distance₂ = speed₂ * time₂
total distance = distance₁ + distance₂
total time = time₁ + time₂
And the average speed is given by
average speed = (total distance)/(total time)

Using the above formulas, we have
distance₁ = 60 mi/h * 2.5 h = 150 mi
distance₂ = 75 mi/h * 1.5 h = 112.5 mi
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total time = 2.5 h + 1.5 h = 4.0 h

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Bette's average rate of speed is 65.625 mph.

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3 years ago

Solve the following system of equations using matrices.

Alecsey [184]

It is convenient to let a calculator do the math.
.. (x, y) = (0, 3) . . . . . your 3rd selection

_____
I prefer using the RREF function to put the augmented matrix into reduced row-echelon form. If the equations are dependent or inconsistent, using that method tells you so without giving a matrix inversion error.

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3 years ago