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3 years ago

100 POINTS!

Mathematics

1 answer:

Debora [2.8K]3 years ago

8 0

Answer:

A, B, D

Step-by-step explanation:

A random sample is one in which every member of the population has an equal chance of being chosen.

If employees are chosen out of a hat, or balls are drawn from a bowl, each has an equal chance of being chosen.

Samples selected through volunteering, or where not everyone has an equal chance of being selected, is not random.

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Points M and N are both on ZB with M between Z and N. ZM = 10

maxonik [38]

Answer:

Your answer is 40%

Step-by-step explanation:

It is 20 units between Z and B.

We add 2 more points, and one of them is at the the halfway point of the entire line.(M)

One of them is only 2 units away from B.(N)

That means our line is halved, so from 20/20 possible places a point could go and land in the right area is now 10/20.

Minus 2 from that; to take into count of the N to B, and you have 8/20

8/20 is just 40%

5 0

3 years ago

Find the product 7/10 x 3/6 (please help!) fractions

hichkok12 [17]

Answer:

7/10 x 3/6 = 21/60

21/60 in its simpliest form = 7/20

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1 year ago

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94% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a sing

professor190 [17]

Answer:

Step-by-step explanation:

7 0

3 years ago

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This item is $9000 dollar and it is 90% off how much is the item? Step by step?

Daniel [21]

Answer:

The item costs $900 after the 90% off.

Step-by-step explanation:

After the 90% off discount, the item costs (100% - 90%) the cost of the original price.

Hence, $\$9000 \cdot (100\% - 90\%)$

$= \$9000 \cdot 10\%$

$= \$900$

Hope this helped!

5 0

3 years ago

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Rewrite the expression $6j^2 - 4j 12$ in the form $c(j p)^2 q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$

solniwko [45]

$Rewrite the expression 6j^2 - 4j + 12$ in the form $c(j + p)^2 + q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$$

The ratio of $\frac{q}{p}$ = - 34

How to solve such questions?

Such Questions can be easily solved just by some Algebraic manipulations and simplifications. We just try to make our expression in the form which question asks us. This is the best method to solve such questions as it will definitely lead us to correct answers. One such method is completing the square method.

Completing the square is a method that is used for converting a quadratic expression of the form $ax^{2} + bx + c$ to the vertex form

$a(x - h)^{2} + k$ . The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square: $a(x + m)^{2} + n$ , such that the left side is a perfect square trinomial