3 years ago

I really need help with this:

Mathematics

2 answers:

tigry1 [53]3 years ago

8 0

Answer:20

Step-by-step explanation:

i wrote 10 for some reason

kogti [31]3 years ago

5 0

20 most likely multiply it and see

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Suppose AB ≅ AE. Can you use the SSS Postulate or the SAS Postulate to prove ABC ≅ AED?

Fed [463]

Answer:yes by the Isos triangle thm

Step-by-step explanation:

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3 years ago

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This is the first year Janis is playing softball. She has been practicing her batting. On her last swing the bat made an arc wit

Aleksandr-060686 [28]

Answer:

a) 60π inches

b) 5π feet

Explanation:

The arc length of a circular sector is related to the swept angle by the proportion:

$\dfrac{arc\text{ }length}{2\pi \cdot radius}=\dfrac{angle}{360\º}$

Here you have:

arc length: ?
radius: 48 inches
angle: 225º

Substitute and solve for the arc length:

In inches:

$arc\text{ }length=\dfrac{225\º}{360\º}\times 2\pi (48in)}=60\pi$ inches

Convert to feet:

Use the conversion factor: 1 feet = 12 inches

$60\pi\text{ }in\times\dfrac{1ft}{12in}=5\pi ft$

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3 years ago

Find the probability of at least 2 girls in 8 births. assume that male and female births are equally likely and that the births

Afina-wow [57]

At least two girls means either 2, 3 ... or 8 girls.
Using the binomial law, we can write the probability in the form:
B(2,0.5)+B(3,05)+...+B(8,0.5)= $0.0039(C_8^2+...+C_8^8)$
Continue simplifying:
$C_8^2+...+C_8^8=2^8-C_8^1=2^8-8=248\\\text{We deduce the probability of the event "at least two girls in birth ":}\\0.0039\times248=0.96\\\text{The above probability (0.96) means that the event is very likely}$

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3 years ago

How do you divide a decimal?

tigry1 [53]

I hope this will help you.