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Komok [63]
2 years ago
12

Calculate the area of a circle whose diameter is 7cm.​

Mathematics
1 answer:
Tema [17]2 years ago
4 0

Answer:

49π (or ~154) cm²

Step-by-step explanation:

A = area

A = πr²

r = radius

r = 7

A = π(7)²

= 49π

= 153.938040026 → 154 cm²

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Find the mean and the median of the data set..... 200,167,185,212,195,193,188,140
astraxan [27]
You Will Add Up All The Number Then Divide By The Total Number You Have In All
The Mean Is 185
You Put All The Number In Order For The Median 
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So You Have Two Number Which Are 188 and 195 
You Will Add 188 + 195=383
Now You Divide 383 By 2 Which Is 191.5
4 0
4 years ago
a line is perpendicular to y=-2x+5 and intersects the point (-4,2). what is the equation of this perpendicular line?
german

Answer:

y = 1/2x + 4

Step-by-step explanation:

If the line is perpendicular to y = -2x + 5 then the new line has a slope of 1/2.

So solve for b: using y = mx + b

2 = 1/2(-4) + b

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Put it all together

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6 0
3 years ago
The product of a number and -3 increased by 8 is no less than 35
Tems11 [23]
-3x + is greater than or equal to 35

hope this helps!
8 0
3 years ago
David wants to complete a hypothesis test with the least amount of probability for error. If he sets the significance level to 1
Brrunno [24]

Answer:

He could increase the sample size

Step-by-step explanation:

In hypothesis testing, the error associated with the test is affected by a number of factors. The first factor is the level of significance, alpha. This is the probability of type 1 error. The probability of rejecting the null hypothesis when it is indeed true.

The second factor is the size of the sample used. The larger the sample, the smaller the error since the characteristics of the sample will be closer to those of the entire population on which inference is being made

8 0
3 years ago
Read 2 more answers
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Bad White [126]

Answer:

-7,-4,-3,+1,+8

Step-by-step explanation:

The bigger the negative number, the less it's worth

3 0
3 years ago
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