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2 years ago

First good answer gets brainiest

Mathematics

2 answers:

matrenka [14]2 years ago

8 0

1/4

since there is 4 letters in the word math

so 1 out of 4

Hope it helps...

QveST [7]2 years ago

5 0

Answer:

but it's 1/4

Step-by-step explanation:

You are in miss hood class now bc this is on the test

mark me brainlest

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The lengths of pregnancies in a small rural village are normally distributed with a mean of 264.1 days and a standard deviation

KiRa [710]

Answer:

The range of the 95% data (X) = 238.3 days < X < 289.9 days

Step-by-step explanation:

Given;

mean of the normal distribution, m = 264.1 days

standard deviation, d = 12.9 days

between two standard deviation below and above the mean is 96% of all the data.

two standard deviation below the mean = m - 2d

= 264.1 - 2(12.9)

= 238.3 days

two standard deviation above the mean = m + 2d

= 264.1 + 2(12.9)

= 289.9 days

The middle of the 95% of most pregnancies would be found in the following range;

238.3 days < X < 289.9 days

5 0

2 years ago

Please help me with this:

Katen [24]

Answer:

She used 22 paper fans, 66 balloons, and 32 streamers.

Step-by-step explanation:

In order to solve this problem, we need to find out the value of the paper fans. Because we need to find out the balloon amount, which is 3 times as much. The amount of streamers is 12 fewer than two times. We can't find it out just yet since we don't know the value of the paper fans. To find it out:

First, let's call the amount of paper fan as "x".

Then, we need to find out the amount of balloons. It is 3 times x. Which is the same as 3x.

The equation is now x + 3x + (?) = 120

We need to find out the amount of the (?).

So, to do that, it says the value is 12 fewer than 2 times the value of x. (x, because it is the amount of paper fans.)

It should be 2x-12.

Now, the equation is x+3x+2x-12=120.

Once we solve it, we know "x" is 22.

Now, we can multiply 3 by 22. Which is 66.

Then we can multiply 22 by 2, which is 44, and subtract 12, which is 32.

To double check, 22 + 44 + 32 = 120.

That's your answer!