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3 years ago

PLEASE HELP!! Image Attached! find the value of y, rounded to the nearest tenth

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

7 0

Answer: y is equal to 3.89,

Step-by-step explanation: This question can be solved using the theorem of the power of a point.

The power of a point Theorem states that if a two lines intercept at a point that is intersect with the center of the circle, the lines will create either one segment (S) or two segments (s1 and s2). And the multiplication of each segment equal, which is s1s2 for line one is equal to s1s2 for line two.

Therefore for the diagram.

Using the power of a point Theorem;

9 ×y = 5 × 7

9y = 35

Therefore;

y = 35 ÷ 9 = 3.88889

y = 3.89

m_a_m_a [10]3 years ago

5 0

5 * 7 = 9y
35 = 9y
 3.8888888889 
y = 3.9

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In a study of the accuracy of fast food drive-through orders, one restaurant had 34 orders that were not accurate among 371 ord

postnew [5]

Answer:

The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level

Step-by-step explanation:

Given that in a study of the accuracy of fast food drive-through orders, one restaurant had 34 orders that were not accurate among 371 orders observed.

Sample proportion $p=0.092\\q=1-p = 0.908\\n = 371$

$H_0: p =0.10\\H_a: p \neq 0.10$

(Two tailed test at 5% significance level)

p difference = $0.092-0.100\\=-0.0084$

Std error if H0 is true = $\sqrt{\frac{0.1(0.9)}{371} } \\=0.016$

Test statistic Z = p diff/std error

=0.539

p value = 0.5899

Since p > 0.05 accept null hypothesis

The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level

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3 years ago

Pls pls help me with this essay. I don’t know how to start pls help me I have other homework to do. Just read the question

Pavel [41]

Answer:

First consider the original amount.

Then consider the rate of tax or markup

To find the tax or markup, multiply the rate by the original amount.

To find the total cost, add the tax or markup to the original amount.

Step-by-step explanation:

Example

A phone has a listed price of $790 before tax. If the sales tax rate is 6.5% find the total cost of the phone with sales tax included. Round your answer to the nearest cent as required.

Solution

Step 1:

List price of the phone = $790

Sales tax rate = 6.5%

Step 2:

Sales tax = 6.5% of 790=0.065×790=51.35

Step 3:

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2 years ago

mr. rogers gave his students a test that was worth 100 points erika earned an 84%, joe earned 5/6 of the total points, malcolm e

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Hey!

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Find the amount of points each student earned!

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Malcolm: √7225 = 85 points earned out of 100.

Stephanie: 83/100 = 83 points earned out of 100.

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3 years ago

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Naya [18.7K]

Answer:

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2 years ago

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sweet [91]

So to work this out we need to find the 4th root of each of those and pick the one that gives an integer.

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B: $\sqrt[4]{1.6*10^1^2} =1124.682...$ Again a decimal, therefore not an integer.

C: $\sqrt[4]{1.6*10^1^3} =2000$ This is a whole number, so it is an integer.

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E: $\sqrt[4]{1.6*10^1^5} =6324.555...$ Again a decimal, not an integer.

The only one that gives an integer when put to the 4th root is C, therefore:

$1.6*10^1^3$ could be A^4, as the 4th root of it is an integer.

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3 years ago