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ehidna [41]
3 years ago
9

Find a value of (2power-1*4power-1)

Mathematics
1 answer:
rosijanka [135]3 years ago
8 0

2^( - 1 ) × 4^( -1 ) =

2^( -1 ) × 2^( 2 × ( - 1) ) =

2^( - 1 ) × 2^( - 2 ) =

2^( - 1 - 2 ) =

2^( - 3 ) =

1/ 2^( 3 ) =

1/8

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A compact disc has an approximate Radius of 2 3/8 inches, what is the approximate area of a CD
professor190 [17]

Answer:

A≈12.57      

r Radius 2

Step-by-step explanation:

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3 years ago
In order to solve the system of linear equations, the coefficients of one of the variables must be the same number but opposite
Mashutka [201]

Answer:

Step-by-step explanation:

because both equations do not have matching numbers for the x or y variable, and both equations are positive you are going to have to multiply each equation by a number  so that there will be at least one variable with the same number but with opposite signs.

it does not matter which variable you choose.

lets use y because 2 and 3 are smaller then 2 and 5.

so lets multiply the first equation by 2 in order to get y equal to 6.

2(2x)+2(3y)=(2)6

(do not forget to multiply what the equation is equal to also)

4x+6y=12

now for the second equation we need y to equal negative 6

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-15x-6y=-12

now lets put the 2 new equations next to each other and see what we can cancel out

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now plug 0 in for x and solve for y (it does not matter which of the 4 equations you choose to solve.

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8 0
3 years ago
The sales tax on the model rocket shown is $1.92. What is the percent of sales tax?
fgiga [73]
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3 0
3 years ago
The Quan’s mother made a quilt for his bed. The quilt is 2.44 meters long And 1.83 meters wide. What is the area of the quilt in
Katarina [22]
Your answer is 48.11 sqft. 

3 0
3 years ago
Read 2 more answers
Can someone solve this! Need it done soon
Airida [17]

Answer:

117.5 ft²

Step-by-step explanation:

To find the area of the shaded area, we can find the area of the square, then subtract the areas of the two semicircles.

First, we will find the area of the given square, by using the formula lw, multiplying the length and width. The dimensions of this square are 14×14.

14 · 14 = 196

The area of the square is 196 ft².

We can now find the area of the two congruent half-circles. Since they are identical, we can simply find the area of one circle if it was whole. To find the area of a circle, we'll use the formula A=\pi r^2. With some simple deduction, we can see that the diameter of the circle is 10 ft, so the radius would be 5 ft long. Plug our values into the formula.

A = \pi5²

We will use 3.14 for \pi.

A = 78.5

The area of both the semicircles is 78.5 ft².

Now, we can subtract.

196 - 78.5 = 117.5

The area of the figure is 117.5 ft².

Good luck ^^

7 0
3 years ago
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