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DENIUS [597]
3 years ago
15

Which values are solutions to the inequality below?

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Answer:

\sqrt{x } > 8  \\ x > {8}^{2}  \\ x > 64

Since the value of x must be bigger that 64 thus B. 66 and F. 65 are the answers.

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What is the area of 2 2/5 and 4 1/8
KengaRu [80]
The area is 9.9 or 9 9/10
4 0
2 years ago
Which expression is equivalent to 3(7x – 5)?
Mamont248 [21]

Answer:

21x - 15

Step-by-step explanation:

if this answer helped u and u liked it, pls mark as brainliest! thx!

3 0
3 years ago
Which expression should you simplify to find the 90% confidence interval,
bogdanovich [222]

Answer:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is \hat p=0.45

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025.

And the critical value is:z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the true population proportion is interest is given by this formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

Replacing the values provided we got:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

5 0
3 years ago
A gift box has a surface area of 6.25 square feet. What is the surface area of the box in square inches?
guapka [62]

The surface area of the box in square inches will be 39.0625 inches².

<h3>How to calculate the area?</h3>

From the information, the gift box has a surface area of 6.25 square feet.

Therefore, the surface area of the box in square inches will be:

= Side × Side

= 6.25 × 6.25

= 39.0625 inches²

Therefore, the surface area of the box will be 39.0625 inches².

Learn more about area on:

brainly.com/question/25292087

#SPJ1

4 0
1 year ago
What is the distance between the points (11 , -17) and (-11 , -17) in the coordinate plane?
liubo4ka [24]

Answer:

22 units

Step-by-step explanation:

11 - (-11) = 22

8 0
3 years ago
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