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3 years ago

Help me plz Find the area of the circle use 3.14 for pi

Mathematics

2 answers:

Fed [463]3 years ago

7 0

Answer:

530.93 cm thats what i got at least

Scorpion4ik [409]3 years ago

7 0

Answer:

A =530.66 cm^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

The radius is given by r =13

A = (3.14) (13)^2

A =530.66 cm^2

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Answer:

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Step-by-step explanation:

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2 years ago

Solve 6y2-5y-6 = 0 using the quadratic formula.

sergejj [24]

Answer:

Ay=3 over 2 or y=-2 over 3

Step-by-step explanation:

the quadratic formula: y={-b±√(b²-4ac)}/2a

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{-(-5)±√[(-5²)-4(6)(-6)}/2(6)

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2 years ago

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mel-nik [20]

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2 years ago

A software company decided to conduct a survey on customer satisfaction. Out of 564 customers who participated in the online sur

nikklg [1K]

Answer:

$z=\frac{0.0904 -0.1}{\sqrt{\frac{0.1(1-0.1)}{564}}}=-0.760 \approx -0.8$

$p_v =2*P(z$

Step-by-step explanation:

Information given

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X=51 represent the number of people who rated the overall services as poor

$\hat p=\frac{51}{564}=0.0904$ estimated proportion of people who rated the overall services as poor

$p_o=0.1$ is the value to compare

z would represent the statistic

Hypothsis to analyze

We want to analyze if the proportion of customers who would rate the overall car rental services as poor is 0.1, so then the system of hypothesis are:

Null hypothesis: $p=0.1$