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2 years ago

State the line of reflection. A B 2 C D'o Chri А" B Reflection across (type with no spaces) Espacio en Blanco 1:

Mathematics

1 answer:

zubka84 [21]2 years ago

3 0

Answer:

y = 0

Step-by-step explanation:

The image is reflected across the y-axis

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8* x + y + y; use x=9, and y = 10

katrin [286]

Answer:

Step-by-step explanation:

8* x + y + y

Where

x=9, and y = 10

Solution=8×9+10+10

=72+20

=92.

So the answer is 92

8 0

2 years ago

Read 2 more answers

Mary’s grade on her research paper counts for 20% of her final grade in english. if there are a total of 400 points possible how

sweet-ann [11.9K]

Answer:

80 points

Step-by-step explanation:

400 x 0.20% = 80

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3 years ago

A manufacturing company wants to use a sample to estimate the proportion of defective tennis balls that are produced by a machin

Kitty [74]

Answer:

The least number of tennis balls needed for the sample is 1849.

Step-by-step explanation:

The (1 - α) % confidence interval for population proportion is:

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

The margin of error for this interval is:

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

Assume that the proportion of all defective tennis balls is p = 0.50.

The information provided is:

MOE = 0.03

Confidence level = 99%

α = 1%

Compute the critical value of z for α = 1% as follows:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58$

*Use a z-table.

Compute the sample size required as follows:

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

$n=[\frac{z_{\alpha/2}\times \sqrt{\hat p(1-\hat p)} }{MOE}]^{2}$

$=[\frac{2.58\times \sqrt{0.50(1-0.50)} }{0.03}]^{2}\\\\=1849$

Thus, the least number of tennis balls needed for the sample is 1849.

8 0

3 years ago

Can anyone help me to sove it?

Mumz [18]

Iam not very sure but i think y=22.5

8 0

3 years ago

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In one year, online retail sales increased from $6 to $11 billion.

xeze [42]

83 percent.

Simply do 11-6, which is 5; then do 5/6, and multiply by 100 to get the percent. That equals out to be 83.3333 percent. Or 83 percent when rounding.

3 0

3 years ago

State the line of reflection. A B 2 C D'o Chri А" B Reflection across (type with no spaces) Espacio en Blanco 1: ​

State the line of reflection. A B 2 C D'o Chri А" B Reflection across (type with no spaces) Espacio en Blanco 1: