Help please ;(

1 answer:

8 0

1. A
2. B
3. C

Commutative property;

x + y = y + x

x • y = y • x

Associative property

(x+y) + z = x + (y + z)

Identity property

X + 0 = X

You might be interested in

018 10.0 points

Elina [12.6K]

Answer:

what grade

Step-by-step explanation:

7 0

3 years ago

Scientists researching the effect of dietary supplements such as multivitamins and supplements of folic acid, magnesium or zinc

yarga [219]

Answer: Null hypothesis : $H_0: p_1=p_2$

Alternative hypothesis : $H_a: p_1\neq p_2$

Step-by-step explanation:

Let $p_1$ be the proportion of women using supplements and $p_2$ be the proportion of women who did not to have died during that period .

Then the set of hypothesis for testing if the proportion of women elderly women who use dietary supplements is different than those who do not will be :-

Null hypothesis : $H_0: p_1=p_2$ [∵ it takes equality sign]

Alternative hypothesis : $H_a: p_1\neq p_2$ [∵ it takes ≠ sign to show difference]

6 0

2 years ago

Why do you multiply by a power of 10 when writing a repeating decimal as a rational number

stira [4]

1.28 = 128 * 10^-2

128 * (1/10^2)

128 / 10^2

128 / 100

1.28

Because, it's literally the same thing mathematically if you worked it out. Though, as I'm sure you're aware, it's just a much shorter and cleaner way of writing out large or small numbers.

8 0

3 years ago

Read 2 more answers

Make a number line and mark the points that represent the following values of x. 10∙x=0

djyliett [7]

The point on a number line is the location of the point.

<h3>How to draw the number line</h3>

The points are given as:

x = 10 and x = 0

This means that we mark a point at the point 10 on the number line, and another point at the point 0 on the same number line

However, the point 0 would come before point 10 because 0 is less than 10

See attachment for the number line