All categories

4 years ago

Plz help me really really fast 2 mins left

Mathematics

1 answer:

deff fn [24]4 years ago

6 0

Answer:

Step-by-step explanation:

The diagonal of the square creates 2 right triangles with the diagonal as the hypotenuse.

Using Pythagoras' identity in either of the right triangles.

The square on the hypotenuse is equal to the sum of the squares of the other 2 sides.

Let x be the side of the square, then

x² + x² = 40², that is

2x² = 1600 ( divide both sides by 2 )

x² = 800 ( take the square root of both sides )

x = $\sqrt{800}$

= $\sqrt{100(8)}$

= = 10 $\sqrt{8}$

= 10 × $\sqrt{4(2)}$

= 10 × 2 $\sqrt{2}$ = 20 $\sqrt{2}$ → C

You might be interested in

Round to the nearest tenth 4.1553

Len [333]

Answer:

4.2

Step-by-step explanation:

4.1553

15 -> 2

4.2

7 0

3 years ago

Read 2 more answers

4. Escribe<br> 5. Escribe la ecuación 3x + 4y - 20 = 0 en su forma simétrica.<br> 62

navik [9.2K]

Answer:

which principle prevents a brach from abusing its power

Step-by-step explanation:

7 0

4 years ago

Please help me I don’t remember how to do it

icang [17]

In this problem, you must change the signs of everything in the parenthesis, which will come to 3x^2 + x - 5x^2 - x + 4. Add like terms, and you will end up with -2x^2 + 4, which is answer choice A. Hope this helped

6 0

3 years ago

Read 2 more answers

(Plz, im desperate!)A certain bakery has found that the daily demand for bran muffins is 7700/p, where p is the price of a muffi

melisa1 [442]

Answer:

P = 70 cents per muffin

Step-by-step explanation:

It says to find the price when the supply and demand are equal, so you have to set the two equations equal to each other.

7700/p = 3p-100.

It seems to me that the best way to solve this would be to set up a quadratic equation.

If you multiply both sides by p and then subtract 7700, you get the following:

0=3p^2 -100p -7700

I wrote a program to solve this, and I got the answers p= 70 and -36.67.

Obviously, a negative number doesn’t work in this situation, so the answer is 70 cents per muffin. To check this, you can plug it back into the equation:

7700/70=3(70)-100

110=110

8 0

3 years ago

points E,F and G are plotted on a number line at -1, 2 and 6 respectively. Find the coordinate o f the point that represents the

Maslowich

Answer: 3 is the weighted average

Step-by-step explanation:

A weighted average is sort of like it sounds. - Different data-points are given different weights as far as how much they affect the answer. It's like you had 4 people on a corporation's board and all four get to vote, but their votes count differently. Person A has a vote that counts as 3. Person B has a vote that counts as 2 votes. Persons C & D each have a vote that counts as just one vote. For peron A to get outvoted, all the others must gang up against him.

Okay, back to our actual problem ...

point E measures (-1) and has weight 2x weight of F
point F has a measure of 2 and no particular stated weight
point G measures 6 and has a weight of 3x weight of F

Since we can assign a weight to point F and the other weights will be based on that, let's just keep it simple and give point F a weight of 1.

That gives E a weight of 2, and G a weight of 3.

So, ...

E value times E weight is (-1) x 2 = -2

F value times F weight is 2 x 1 = 2

G value times G weight is 6 x 3 = 18

Sum of (value x weight) = 18

Sum of the weights = 2 + 1 + 3 = 6

WE get the weighted average by taking the sum of (value x weight) products (18) and then dividing by the sum of the weights (6).

18/6 = 3, the weighted average

The point at coordinate 3 represents the weighted average.

4 0

2 years ago