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olganol [36]
4 years ago
11

How to do? Can anyone help me please? I will appreciate that a lot!

Mathematics
1 answer:
Nitella [24]4 years ago
4 0
Triangle ABD is i<span>nscribed in circle and </span>has hypotenuse as circle's diameter so angle ABD must be 90°

Since it is parallelogram, ∠ABD = ∠BDC = 90° and it is given that ∠ADB = 30°

So we have ∠CDO = ∠CDB + ∠ADB = 30° + 90° = 120°

Final answers: ∠CDO = 120° and ∠ABD = 90°
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Does anyone mind helping me with this? It seems simple enough.
Yanka [14]

Answer:

x = 4

Step-by-step explanation:

It is given that \sqrt{(x - 3)} = \sqrt{x} + 3, and we have to solve the given equation for x.

Now, we have \sqrt{(x - 3)} = \sqrt{x} + 3

Squaring both sides we get  

[\sqrt{(x - 3)}] ^{2} = [\sqrt{x} + 3]^{2}

⇒ x - 3 = x + 6√x + 9 {Since we know the formula of (a + b)² = a² + 2ab + b²}

⇒ 6√x = - 12

⇒ √x = -2

Again squaring both sides we get  

⇒x = 4 (Answer)

3 0
3 years ago
Acellus
LekaFEV [45]

Answer:

1 and 5 out of 12

Step-by-step explanation:

Katie:9/12

Tori:8/12

9+8 =17/12 = 1 and 5/12 and this is already in the simplest form

6 0
3 years ago
a pollster wishes to estimate the proportion of united states voters who favor capital punishment. how large a sample is needed
olasank [31]

The sample size must be 543 so the sample proportion is will not differ by 5%

We are given the following in the question:

Margin of error = 5%

Confidence interval:

p ±z√(p'(1 - p')/n)

Margin of error =

p = ±z√(p'(1 - p')/n)

Since no particular proportion is given, we take

p' = 0.5

Z critical at α 0.02 is ± 2.33

Putting values, we get,

p = ±z√(p'(1 - p')/n)

2.33 x √(0.5(1 - 0.5)/n)

√n = 2.33x 0.5/0.05

n = 542.89 = 543

Thus, the sample size must be 543 so the sample proportion is will not differ by 5%

To learn more about confidence interval refer here

brainly.com/question/15712887

#SPJ4

3 0
1 year ago
Your soccer team is holding a silent auction dinner as a fundraiser to pay for the team uniforms. The list shows all the expense
Naddik [55]

Answer:

The answer to this problem would be 900$.

WHY?:

I already did this question myself!!

3 0
3 years ago
Read 2 more answers
How can you write the expression (28 + 70) as a multiple of a sum of whole numbers with no common factor? ОА. 1 x (28 + 70) O B.
My name is Ann [436]

Answer:

14 x (2 + 5)

Step-by-step explanation:

This is because 2 and 5 do not have a factor greater than 1

7 0
2 years ago
Read 2 more answers
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