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2 years ago

Express 9 -² using positive exponents. Do not simplify.

Mathematics

1 answer:

Leokris [45]2 years ago

3 0

1/9^2 if that makes sense?

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HELP ASAP DUE RIGHT NOW THANK YOU

bagirrra123 [75]

Answer:

the answer is a (75%)

Step-by-step explanation:

its pretty easy,

u have to make 2 hours into minutes = 120 minutes

then start subtracting

120 - 20 (reading assignment)

= 100

100-25 (working on craft) = 75

make 75 into a percent which is

75%

4 0

3 years ago

If ΔABC is an equilateral triangle with, AB = 2x + 17, BC = 6x - 19, AC = 4x-1, find x and the measure of each side

Soloha48 [4]

Answer:

$x=9, AB=BC=AC=35$

Step-by-step explanation:

Equilateral triangles have 3 congruent sides, so all 3 sides have the same length. Therefore, we know that $AB=BC=AC$ . We are given the lengths of all 3 sides in terms of $x$ , but we only need to set two of them equal to each other to solve for $x$ . Let's use $AB$ and $BC$ to solve for $x$ . We know that $AB=BC$ , $AB=2x+17$ , and $BC=6x-19$ . Therefore, we can write the following equation to solve for

$AB=BC\\2x+17=6x-19$ (Substitute given values into equation)

Solving for $x$ , we get:

$2x+17=6x-19\\2x+17-17=6x-19-17$ (Subtract $17$ from both sides of the equation to isolate constants)

$2x=6x-36$ (Simplify)

$2x-6x=6x-36-6x$ (Subtract $6x$ from both sides of the equation to isolate $x$ )

$-4x=-36$ (Simplify)

$\frac{-4x}{-4}=\frac{-36}{-4}$ (Divide both sides of the equation by $-4$ to get rid of $x$ 's coefficient)

$x=9$ (Simplify)

Therefore, $AB=2x+17=2*9+17=18+17=35$ , and $AB=BC=AC=35$ . Hope this helps!

3 0

3 years ago

Use linear combination <br><br> 4x-9y=1<br> -2x+3y=-1

kirill [66]

Answer:

(x, y) = (1, 1/3)

Step-by-step explanation:

The x-coefficient in the first equation is -2 times that in the second equation, so adding twice the second equation to the first will eliminate x:

(4x -9y) +2(-2x +3y) = (1) +2(-1)

-3y = -1 . . . . simplify

y = 1/3 . . . . . divide by -3

The y-coefficient in the first equation is -3 times the y-coefficient in the second equation, so adding 3 times the second equation to the first will eliminate y:

(4x -9y) +3(-2x +3y) = (1) +3(-1)

-2x = -2 . . . . . . simplify

x = 1 . . . . . . . . . divide by -3

The solution is (x, y) = (1, 1/3).

8 0

4 years ago

FIRST TERM IS 3 and COMMOND DIFFERENCE IS 5

pochemuha

Answer:

WHY IS THIS IN CAPS

Step-by-step explanation:

AAAAAAAAAAAAAAARRRRRRRGGGGHHHHH

4 0

3 years ago

Helppp I’m having problems with fractions

AysviL [449]

Answer:

The fourth one

Step-by-step explanation:

I know that is correct

6 0

3 years ago