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3 years ago

Evaluate 5^-4 A.1/625 B.-1/625 C.625 D.-625

Mathematics

1 answer:

Vaselesa [24]3 years ago

8 0

Answer:

Step-by-step explanation:

that's the right answer

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I know the answer but the calculator doesn't seem to give the right one

Diano4ka-milaya [45]

Answer:

Make sure the mode is on degree and not radian! Common mistake

6 0

3 years ago

The coldest day in ohio clocked in at 40 below zero. In one day though the temperature changed to 20 below zero How much tempera

Zolol [24]

40 below 0 would be -40 and 20 below 0 would be -20°. So there’s a change of (increase of) 20° that day. It would also make sense if you drew a number line. You would see the interval between -40 and -20 is 20.

6 0

3 years ago

Which equation finds the area of a square with a side length of 5n4 units?

AnnyKZ [126]

Answer:

25n^8

Step-by-step explanation:

Area of a square is length×length

Length=5n^4

Area=5n^4×5n^4

=(5×5)(n^4+4)

=(25)(n^8)

=25n^8

So the area of a square is 25n^8

6 0

3 years ago

Read 2 more answers

What is the value of a when we rewrite 8^x as a^-x/9

Andre45 [30]

Answer:

$a = \frac{1}{134217728}$

Step-by-step explanation:

Given

$8^x = a^{-x/9}$

Required

Find a

Take log of both sides

$log(8^x) = log(a^{-x/9})$

Apply law of logarithm

$x\ log(8) = (-x/9) log(a)$

Divide both sides by a

$log(8) = -\frac{1}{9} log(a)$

Multiply both sides by -9

$-9\ log(8) = log(a)$

Apply law of logarithm

$log(8^{-9}) = log(a)$

Cancel out log

$8^{-9} = a$

Rewrite as:

$a = 8^{-9}$

Apply law of indices

$a = \frac{1}{8^9}$

$a = \frac{1}{134217728}$

4 0

3 years ago

Juan wants to change the shape of his vegetable garden from a square to a rectangle, but keep the same area so he can grow the s

sergeinik [125]

The quadratic equation that would model this scenario is

$x^{2} = 2x(x-16)$

Let us take the side of the square = x

Area of the square = x²

Length of the rectangular garden = 2x

Width of the rectangular garden = x-16

So, the area of the new vegetable garden = length*width

Area of the new or rectangular vegetable garden = 2x(x-16)

<h3>What is a quadratic equation?</h3>

The polynomial equation whose highest degree is two is called a quadratic equation. The equation is given by $ax^2+bx+c$ coefficient $x^{2}$ non-zero.

Since it is given that

Area of square garden = area of the rectangular garden

$x^{2} = 2x(x-16)$

Thus, the quadratic equation that would model this scenario is

$x^{2} = 2x(x-16)$

To get more about quadratic equations refer to:

brainly.com/question/1214333

5 0

2 years ago