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3 years ago

PLESSSS HELP MEEEE ANSWER ALL THANKSSSS!!!!! MUCH LOVEeee!!

Mathematics

1 answer:

seraphim [82]3 years ago

7 0

Answer:

Omg my oth acc is gone

Step-by-step explanation:

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Anna said that the product of 7/8 · 1 1/2 = 7/2 How can you tell that her answer is wrond?

Mazyrski [523]

Here is your answer:

1 1/2 = 3/2

7 × 3 = 21

8 × 2 = 16

Divided to equal $1\frac{5}{16}$ <--- Real answer:

The reason why she multiplied her answer wrong, she also "kept her original numerator and denominator."

Hope this helps!

5 0

3 years ago

What does the open circle and closed circle mean??

TEA [102]

The open circle is greater than or less than, closed circle is less than or equal to or greater than equal to

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3 years ago

Read 2 more answers

(23.01) In a randomized comparative experiment on the effect of dietary calcium on blood pressure, researchers divided 58 health

Paul [167]

Answer:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

Step-by-step explanation:

Information given

$\bar X=113.7$ represent the sample mean

$\mu$ population mean (variable of interest)

s=9.1 represent the sample standard deviation

n=29 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=29-1=28$

The Confidence is 0.96 or 96%, the significance is $\alpha=0.04$ and $\alpha/2 =0.02$ , and the critical value would be $t_{\alpha/2}=2.154$

Replacing the info we got:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

5 0

3 years ago

Complete the equation (4,-8) and (8,5)

LekaFEV [45]

4 is the x1 value, -8 is the y2 value, 8 is the x2 value, and 5 is the y2 value.

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3 years ago

Find x in this 45°-45°-90° triangle. x =

Zielflug [23.3K]

Use a^2 + b^2 = c^2

the triangle must be isosceles because the two angles are the same

1.2^2 + 1.2^2 = x^2
1.44 + 1.44 = x^2
2.88 = x^2
x=6√2/5
or
x ≈1.69706

7 0

3 years ago