Use decimals to spray is 0.719 in expanded form

Mathematics

1 answer:

miss Akunina [59]3 years ago

6 0

The answer would be 0.+0.7+0.01+0.009 hope it helps

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The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side o

tino4ka555 [31]

Answer:

The rectangle is 10 cm by 18 cm.

Step-by-step explanation:

Let x represent the distance from the center of the rectangle to the longer side. Then the distance to the shorter side is x+4. The short side of the rectangle will have length 2x, and the long side will have length 2(x+4) = 2x+8.

The perimeter is twice the sum of the side lengths, so is ...

56 = 2(2x +(2x+8)) = 8x +16

40 = 8x . . . . . . . subtract 16

40/8 = x = 5 . . . divide by the coefficient of x

The side lengths are 2x=10 and 2x+8 = 18 centimeters.

5 0

3 years ago

How do you solve this question?

aliya0001 [1]

We can use the quadratic formula to solve this problem.

$\sf x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

You've already listed the values for 'a', 'b', and 'c', so just plug them into the formula:

$\sf x=\dfrac{-(-12)\pm\sqrt{(-12)^2-4(4)(9)}}{2(4)}$

Simplify:

$\sf x=\dfrac{12\pm\sqrt{144-4(4)(9)}}{8}$

Multiply:

$\sf x=\dfrac{12\pm\sqrt{144-144}}{8}$

Subtract:

$\sf x=\dfrac{12\pm\sqrt{0}}{8}$

Take the square root:

$\sf x=\dfrac{12\pm 0}{8}$

It doesn't matter if you add or subtract something with 0, you'll end up with the same thing, so we have:

$\sf x=\dfrac{12}{8}\rightarrow\boxed{\sf 1\dfrac{1}{2}}$

8 0

3 years ago

There are 8 boys in a class, and these boys make up 40% of the total students. How many students are in the class in total? *

hodyreva [135]

Answer:

Step-by-step explanation:

8 = 40%

4 = 20 %

8 + 8 + 4 = 20

20 students = 100%

3 0

3 years ago