3 years ago

PLZ DONT LEAVE IN BLANK I WILL DO ANYTHING!!!! PLZ

Mathematics

1 answer:

miv72 [106K]3 years ago

6 0

Huh explanation Judd’s

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The lengths of one-year-old baby girls can be described using a normal distribution with a mean of 29 inches and a standard devi

crimeas [40]

The '68-95-99.7' rule says

-About 68% of values fall within one standard deviation of the mean.

-About 95% of the values fall within two standard deviations from the mean.

-Almost all of the values — about 99.7% — fall within three standard deviations from the mean.

Here $31.4=29+2*1.2 26.6=29-2*1.2$

Therefore, the probability

$P(26.6$

The required probability

$P(L$

6 0

3 years ago

Use the quadratic formula to find the solutions for..<br> y = 2x^2 - 9x + 5.

Yakvenalex [24]

Answer: $x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

Step-by-step explanation:

$2x^2-9x+5$

a=2

b=-9

c=5

$x=\frac{-b\frac{+}{}\sqrt{b^2-4ac} }{2a}$

$x=\frac{-(-9)\frac{+}{}\sqrt{(-9)^2-4(2)(5)} }{2(2)}$

$x=\frac{9\frac{+}{}\sqrt{81-40} }{4}$

$x=\frac{9\frac{+}{}\sqrt{41} }{4}$

$x=\frac{9}{4}-\frac{\sqrt{41} }{4} \\x=\frac{9}{4}+\frac{\sqrt{41} }{4}$

4 0

3 years ago

I need some help with geometry.

motikmotik

Answer:

x = 17, angle 1 and 2 = 45

Step-by-step explanation:

7 0

3 years ago

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Olga collected 13 seashells and Katrin collected 4 shells. How many total shells did Olga and Katrin collect all together?

Gelneren [198K]

Answer:

17 seashells

Step-by-step explanation:

13+4=17

I hope this works :)

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3 years ago

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Write a recursive formula for the explicit formula.

Setler79 [48]

Answer: A

Step-by-step explanation:

$A_n=9+(n-1)*(-4)\\\\A_1=9+(1-1)*(-1)=9+0=9\\\\A_{n-1}=9+((n-1)-1)*(-4)\\\\A_n-A_{n-1}=9+(n-1)*(-4)-(9+(n-2)*(-4))=-4n+4+4n-8=-4\\\\\boxed{A_n=A_{n-1}-4}\\\\\\Answer\ A$

5 0

3 years ago