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2 years ago

6

Molly's hair was 20 inches long. Three years later it was 53 inches long. What was the percent increase, to the nearest hundredt

h, of Molly's hair length.

1 answer:

Georgia [21]2 years ago

4 0

Find how much it grew:

53 - 20 = 33 inches.

Divide the amount it grew by the original length

33/20 = 1.65

Subtract 1:

1.65 - 1 = 0.65

Multiply by 100 for percent:

0.65 x 100 = 65%

The percent increase is 65%

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timurjin [86]

Answer:

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2 years ago

What is the equation of the axis of symmetry for this function? H(x) = -X2 + 10x - 11 x = -5 0 x= -10 x = 5 x = 10

siniylev [52]

Given:

The equation of a quadratic function is:

$H(x)=-x^2+10x-11$

To find:

The equation of the axis of symmetry for the given function.

Solution:

If a quadratic function is $f(x)=ax^2+bx+c$ , then the equation of the axis of symmetry is:

$x=-\dfrac{b}{2a}$ ...(i)

We have,

$H(x)=-x^2+10x-11$

Here, $a=-1,b=10,c=-11$ . So, the equation of axis of symmetry by using (i), is

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$x=-\dfrac{10}{-2}$

$x=5$

Therefore, the correct option is C.

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2 years ago

Mrs. Nelson has a rectangular flower box that is 5 feet long and 2 feet tall she wants the width of the box to be no more than 5

Marina CMI [18]

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2 years ago

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What is the measure of < BCD ? Justify your answer.

Likurg_2 [28]

Answer:

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Step-by-step explanation:

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2 years ago

A farmer has 3/4 acre of land. He will use all the land and plant different vegetables in 1/16 -acre sections. How many sections

kati45 [8]

Answer: 12 sections of 1/16 acre

Step-by-step explanation:

We want to find how many sections of 1/16 acre we can have in a total area of 3/4 acre.

This is equal to the quotient between 3/4 and 1/16

Remember that if we have two rational numbers (a/b) and (c/d) the quotient can be writen as:

(a/b)/(c/d) = (a/b)*(d/c) = (a*d)/(b*c)

The quotient we want to solve is:

(3/4)/(1/16) = (3/4)*(16/1) = (3*16)/4 = 12

Then you can have 12 sections of 1/16 acre

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2 years ago