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2 years ago

Help! Got it wrong after trying first time and need helppp !

Mathematics

1 answer:

finlep [7]2 years ago

5 0

We are given the equation:

DA - 2qA = B³

Taking 'A' common on the LHS

A(D - 2q) = B³

Dividing both sides by (D - 2q)

A = B³ / (D - 2q)

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Please hurry i will mark brainliest

Ksivusya [100]

Answer:

Q (8,0)

R (8,9)

S (5,0)

Step-by-step explanation:

I counted how many places is each point away from the line and then I counted the same amount of places on the other side in order to find the reflected angle.

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3 years ago

A researcher wishes to estimate, with 9090% confidence, the proportion of adults who have high-speed Internet access. Her es

Sunny_sXe [5.5K]

Answer: a) Required minimum sample size= 219

b) Required minimum sample size= 271

Step-by-step explanation:

As per given , we have

Margin of error : E= 5% =0.05

Critical z-value for 90% confidence interval : $z_{\alpha/2}=1.645$

a) Prior estimate of true proportion: p=28%=0.28

Formula to find the sample size :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.28(1-0.28)(\dfrac{1.645}{0.05})^2\\\\=218.213856\approx219$

Required minimum sample size= 219

b) If no estimate of true proportion is given , then we assume p= 0.5

Formula to find the sample size :-

$n=0.5(1-0.5)(\dfrac{z_{\alpha/2}}{E})^2\\\\=0.25(\dfrac{1.645}{0.05})^2\\\\=270.6025\approx271$

Required minimum sample size= 271

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2 years ago

What is the ratio of cosine of C? A 24/7 B 24/25 C 7/25 D 25/24

Alecsey [184]

Answer:

Cos C = adjecent/hypotenuse

Cos C = 14/50

divide the numerator and the denominator by 2

Cos C = 7/25

The answer is C

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2 years ago

Whats the relationship between fractions and decimals?

kogti [31]

They are both equal to below zero

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3 years ago

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Solve the following expression: -3+10 - -4 • -5+-6

serg [7]

Answer:

-19

Step-by-step explanation:

-3+10- (-4) × (-5)+(-6)

-3+10+4 × (-5)-6

4×(-5) = -20 -3+10-20-6 = -19

♡ There's this app called Photomath. It will help you with problems like these. I hope this helps. Please mark me as BRAINLINESS....

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3 years ago

Read 2 more answers