PLZ ANSWER <3

Mathematics

2 answers:

Oksi-84 [34.3K]2 years ago

8 0

Answer:

hang on give me a sec to edit this

it is.

Alchen [17]2 years ago

6 0

Mean and standerd deviation to standardizing a value Other words to find the Z score , in a normally distributed data, the value of mean represent 50% of the population

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oksian1 [2.3K]

<h3>Answer: (-infinity, 7]</h3>

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Explanation:

The first interval (-infinity, 3) describes any number less than 3, so we can write x < 3 in short hand (where x is the unknown number).

The second interval (-1, 7] means we start at -1 and stop at 7. We do not include -1 but include 7. So we say that $-1 < x \le 7$ (ie x is between -1 and 7; exclude -1, include 7)

If you were to graph each ona number line, you would see that the too intervals have overlapping parts. The right most edge extends out as far as x = 7. There is no left most edge as it goes onforever that direction.

Therefore, the to intervals combine to get $x \le 7$ which turns into the interval notation answer of (-infinity, 7]

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It might help to think of it like this: x < 3 and $-1 < x \le 7$ say "x is some number that is less than 3, or it is between -1 and 7". So x could be anything less than 7, including 7 itself.

4 0

3 years ago

Sandra is 4 feet tall. Pablo is 10% taller than Sandra and Michaels is 8% taller than Pablo. What is Michael height in feet

taurus [48]

We first calculate Pablo's height .

4 = 100%

x = 1% (Where x is 1% of Sandra's height.)

cross multiplying the equation, we get:

100x = 4 → x = 4/100 → x = 0.04

If 1% = 0.04, then 10% will be 0.04 × 10 = 0.4

Pablo's height is 4 + 0.4 = 4.4 feet.

Now we repeat the above steps to get Michal's height from Pablo's height