3 years ago

I) If a, b, care in continued proportion then show that,(a+b)2/ab=(b+c)2/bc

Mathematics

1 answer:

natali 33 [55]3 years ago

5 0

Here is your perfect answer

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Please help me please

gizmo_the_mogwai [7]

Answer:

SA=390

Step-by-step explanation:

9*14=126

126+126=252

14*3=42

42+42=84

9*3=27

27+27=54

252+84+54=390

3 0

2 years ago

The sum of 5 consecutive integers is 100. What is the first number in this sequence?

yanalaym [24]

So we can call first number "n"

Then all five integers would be n, n+1, n+2, n+3, n+4

So sum of them would be 5n + 10 = 100

Now you can solve for n:

5n + 10 = 100

5n = 90

n = 18

Verify: 18 + 19 + 20 + 21 + 22 = 100. All good.

So answer is 18

5 0

2 years ago

There are two calculus classes at your school classes have a class average of 75.5 the first class as a standard deviation of 10

DENIUS [597]

To compare the two classes, the Coefficient of Variation (COV) can be used.

The formula for COV is this:
C = s / x

where s is the standard deviation and x is the mean

For the first class:
C1 = 10.2 / 75.5
C1 = 0.1351 (13.51%)

For the second class:
C2 = 22.5 / 75.5
C2 = 0.2980 (29.80%)

The COV is a test of homogeneity. Looking at the values, the first class has more students having a grade closer to the average than the second class.

8 0

3 years ago

What is the slope of the line on the graph?

maxonik [38]

Answer:

Slope = 1

Step-by-step explanation:

Rise over Run= 1/1

-I hope this helps have a great night

7 0

2 years ago

Angle 3 is equal to angle

Phoenix [80]

Angle 3 is equal to angle 5 because of vertical angles.

3 0

3 years ago

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I) If a, b, care in continued proportion then show that,(a+b)2/ab=(b+c)2/bc​

I) If a, b, care in continued proportion then show that,(a+b)2/ab=(b+c)2/bc