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3 years ago

Please answer I need help

Mathematics

2 answers:

MissTica3 years ago

8 0

Answer:

C) Hope I can Help

Step-by-step explanation:

oee [108]3 years ago

4 0

Answer:

Step-by-Step Find the difference, not what is 7 subtracting 21, or 7 minus 21. It's like finding the difference (distance) between two points. step explanation:

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If angle CFD = 12a + 45, find a so that FC is perpendicular to fd

LiRa [457]

12a+45=90
-45=90 
12a=45 
12 12 
Answer:
a=45\12

3 0

4 years ago

What is the circumference of the largest circle that can fit a rectangle with dimension 8 x 12?

Minchanka [31]

The number that will fit there is 93

8 0

4 years ago

Read 2 more answers

Quantavius took a hiking with some friends.The friend started early and walked a while before stoping to each lunch.After lunch

kifflom [539]

Answer:

$7\frac{3}{8} \ miles$

Step-by-step explanation:

Given:

After lunch the friends walked 6 3/4 miles before arriving at the end of the trail.

The trail is 14 1/8 miles long.

Question asked:

How long did the friends walk before lunch ?

Solution:

Let the friends walk before lunch in miles = $x$

As total length of trail is given $14\frac{1}{8}\ miles$ , we can conclude:

Total length of trail = The friends walk before lunch in miles + The friends walk after lunch in miles

$14\frac{1}{8} =x+6\frac{3}{4} \\ \frac{14\times8+1}{8}=x+\frac{6\times4+3}{4} \\\frac{113}{8} =x+\frac{27}{4}$

Subtracting both side by $\frac{27}{4}$

$\frac{113}{8} -\frac{27}{4} =x+\frac{27}{4}-\frac{27}{4}$

Taking LCM of 4 and 8 ,we get 8

$\frac{113-54}{8} =x\\\\\frac{59}{8} =x\\\ \\7\frac{3}{8} = x$

Therefore, the friends walk before lunch is $7\frac{3}{8} \ miles$ .

6 0

4 years ago

If f(x) is continuous on a closed interval, then it is enough to look at the points where f prime (x )equals0 in order to find

aivan3 [116]

This would be false

5 0

3 years ago

Find the average rate of change of f ( x ) = 3 x 2 − 9 on the interval [ 2 , b ] . Your answer will be an expression involving b

iVinArrow [24]

Answer:

$m = 3b+6$

Step-by-step explanation:

Given

$f(x)=3x^2 - 9$

Required

The average rate over $[2,b]$

Average rate (m) is calculated using:

$m = \frac{f(b) - f(a)}{b - a}$

Where

$[a,b] = [2,b]$

So, we have:

$m = \frac{f(b) - f(2)}{b - 2}$

Calculate f(b) and f(2)

$f(x)=3x^2 - 9$

$f(b)=3b^2 - 9$

$f(2)=3*2^2 - 9 = 12 - 9 = 3$

So, we have:

$m = \frac{f(b) - f(2)}{b - 2}$

$m = \frac{3b^2 - 9 - 3}{b - 2}$

$m = \frac{3b^2 - 12}{b - 2}$

Expand the numerator

$m = \frac{3b^2 + 6b-6b-12}{b - 2}$

Factorize

$m = \frac{b(3b + 6)-2(3b+6)}{b - 2}$

Factor out 3b + 6

$m = \frac{(b -2)(3b+6)}{b - 2}$

Cancel out b - 2

$m = 3b+6$

4 0

3 years ago