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wolverine [178]
3 years ago
14

Which expression is equivalent to 4^4 ⋅ 4^−9?

Mathematics
1 answer:
melomori [17]3 years ago
7 0
<span>4^4 ⋅ 4^−9 = 4^(4-9)
</span>= 4^-5
1 / (4^5)

Answer: fraction 1 over 4 to the power 5
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Is rectangle EFGH the result of a dilation of rectangle ABCD with a center of dilation at the origin
trapecia [35]

Yes, because both figures are rectangles and all rectangles are similar. Option B is correct option.

According to the statement

We have given that the two rectangles EFGH and ABCD and we have show that the these rectangles Are dilation at origin or not.

So, According to the given diagram

Yes, the rectangle EFGH is a result of dilation of rectangle ABCD with a center of dilation of rectangle at the origin.

Also The scale factor of the dilation is greater than one as the image is bigger than the pre-image i.e. there is a stretch.

The scale factor could be calculated by the ratio of the sides of the image to the pre-image rectangle.

According to the diagram In Rectangle ABCD:

Its vertices have coordinates A(-3,3), B(3,3), C(3,0) and D(-3,0).

Now consider rectangle EFGH:  

Its vertices have coordinates E(-4,4), F(4,4), G(4,0) and H(-4,0).

Hence the scale factor is becomes from these values is:

EF/AB = EH/AD = FG/BC = HG/DC = 4/3.

Hence the scale factor becomes 4/3.

Also

∠A=∠B=∠C=∠D=∠E=∠F=∠G=∠H=90°

( When a shape is dilated the two shapes are similar.And similar shapes have equal interior angles , corresponding sides are proportional ).

So, Yes, because both figures are rectangles and all rectangles are similar. Option B is correct option.

Learn more about center of dilation of rectangle here brainly.com/question/17986580

#SPJ4

4 0
2 years ago
A pair of parallel lines is cut by a transversal what is a measure of angle X
stepan [7]
The correct answer is c45 degrees because 75-30=45
5 0
4 years ago
Read 2 more answers
2-5|5m-5|=-73 absoute value
Wewaii [24]
Solutions i found was  m=4 or  m=-2<span>

</span>
6 0
3 years ago
Read 2 more answers
A pentagon has the following side lengths 5 inches 3 inches 7 inches 4 inches and 3.5 in what is the perimeter of the Pentagon?
Svetllana [295]

Answer:

22.5 inches

Step-by-step explanation:

Perimeter is simply the measure of all sides of a shape. Simply add.

5+3+7+4+3.5=22.5

8 0
4 years ago
Read 2 more answers
Which exponential function goes through the points (1, 16) and (4, 128)?
djyliett [7]

Answer:

Here is the complete question (attachment).

The function which represent the given points are f(x)=8(2)^{x}

Step-by-step explanation:

We know that a general exponential function is like,y=a(b)^{x}

We can find the answer by hit and trial method by plugging the values of (x,y) coordinates.

Here we are going to solve this with the above general formula.

So as the points are (1,16) then for x=1,\ y=16

Can be arranged in terms of the general equation.

ab^1=16...equation(1) and ab^4=128...equation(2)

a\times b=16, then\ a=\frac{16}{a}

Plugging the values in equation 2.

We have

\frac{16}{b} b^4=128,16\times b^3=128,b=\sqrt[3]{\frac{128}{16}} =\sqrt[3]{8}=2

Plugging b=2 in equation 1.

We have a=\frac{16}{b} =\frac{16}{2} =8

Comparing with the general equation of exponential a=8 and b=2

So the function which depicts the above points =y=8(2)^x

From theoption we have B as the correct answer.

7 0
4 years ago
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