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Anna007 [38]
3 years ago
9

In a standard normal distribution, what percent of values are less than -0.23?​

Mathematics
1 answer:
Vika [28.1K]3 years ago
5 0

Answer:

0.4

Step-by-step explanation:

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If the lengths of the legs of a right angle are 5 and 7, what is the length of the hypotenuse?
Natalija [7]

Answer:

7^2 + 5^2 = 49 + 25 = 74

hypotenuse = square root of 74

Answer is B

Step-by-step explanation:

6 0
2 years ago
A parabola intersects the x-axis at x=3 and x=9 what is the x-coordinate of the parabola's vertex?
KiRa [710]

Here we are given the x intercepts at x=3 and x=9

So let us try to make quadratic equation for this using given information.

We have factors in the form (x-a)(x-b)

where a and b are x intercepts given to us.

So rewriting in factored form:

y=(x-3)(x-9)

Now let us simplify it:

y=x^{2}-12x+27

Let us find the vertex now,

For a quadratic equation of the form:

y=ax^{2}+bx+c

For x coordinate , we have the formula,

x=\frac{-b}{2a}

So using this formula for our equation,

x=\frac{-(-12)}{2(1)}

So x = 6

Answer: The x-coordinate of the parabola's vertex is 6.


7 0
3 years ago
Read 2 more answers
Factor using x method and foil to prove
Olegator [25]
Answer:
Step by step:
8 0
3 years ago
What are the next 3 numbers in the number sequence?
PSYCHO15rus [73]

Answer:

B

Step-by-step explanation:

31-23=8

41-31=10

53-41=12

So next number should be 53+14, that is 67.

Follow the rule:

67+16=83

83+18=101

3 0
3 years ago
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Classify the number -3 into as many categories as it belongs: Natural number, whole number, integer, or rational number.
Effectus [21]
-3 is an integer and a rational number.


Natural numbers and while numbers refer to positive numbers, so -3 cannot be either of those.
3 0
3 years ago
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