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egoroff_w [7]
3 years ago
12

Anyone know this one I’m kinda bad at math lol

Mathematics
2 answers:
swat323 years ago
8 0

Answer:

1/ 9^5

Step-by-step explanation:

When dividing exponents with the same base, subtract the exponents

9^2 / 9^7

9 ^ (2-7)

9^ -5

We know that a^ -b = 1/ a^b

1/ 9^5

jenyasd209 [6]3 years ago
8 0

You can rewrite it as:  (using the law of dividing exponents)

9^(2-7) = 9^(-5) = 1/(9^5)

The fourth one

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help me is my third time posting this can anyone please help me 2 questions can at least answer 1 please
Nimfa-mama [501]

Answer:

For 11, x=18

Step-by-step explanation:

Use a ratio to solve for x since the triangles are similar

16/20=(16+12)/(20+x-3), first simplify both sides

4/5=28/(17+x), cross multiply

4(17+x)=5*28

17+x=5*7

x=35-16

x=18

3 0
3 years ago
In a square, the sum of the lengths of three sides is 45 and in a rectangle the difference between a length and a width is 5 in.
stira [4]
Square:
We know all sides of a squares are equal in length.
s= the length of one side of the square.
45= s+s+s
45= 3s
s=15 inches
Each side of the square is 15 inches.

Rectangle:
length(l)= ????
Width(w)= s = 15 inches

l -w= 5inches
l- (15 inches)= 5 inches
l = 20 inches


Answer:
A length of the rectangle is 20 inches long.
5 0
3 years ago
How do you round off 639,121 to the nearest ten thousand?
maxonik [38]
You want to find the closest ten thousand that there is to 639,121.

So a ten thousand is basically anything that ends with four or more zeros.

For example:

530000 would be a ten thousand because it has four zeros at the end.

So you can see what the closest ten thousands are to 639,121 would be.

They would be:

630,000 and 640,000

Since they both have four zeros at the end.

Now you can just tell that 639,121 is closer to 640,000 because the digit in the thousands place, 9, is closer to 10 than 0.

Hope this helped :)

8 0
4 years ago
Read 2 more answers
If r(x) = 2 – x2 and w(x) = x – 2, what is the range of (w*r)(x)
Ainat [17]

A

(-infinity and 0)      

just took test      

8 0
3 years ago
Read 2 more answers
Write 2 as a complex number.
balandron [24]

Answer:

2 + 0i

Step-by-step explanation:

Our real number in this scenario would be 2. And since we don't need an imaginary part because we are just converting 2 by itself, we plug in 0 for the imaginary number.

8 0
3 years ago
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