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vlabodo [156]
2 years ago
9

I NEED TO KNOW WHAT THE ANSWER IS!!!!!! 2+2 A. 22 B.54 C.4 D.12

Mathematics
1 answer:
ale4655 [162]2 years ago
3 0
C. 4 the answer is 4
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Madison made her aunt a garden. The width is 6 5/6 ft and the length is 7 3/5 ft. What is the area of the garden and shown as a
Brums [2.3K]
Hello. How are you doing
5 0
2 years ago
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For what values of x is f(x) = |x + 1| differentiable? I'm struggling my butt off for this course
pav-90 [236]

By definition of absolute value, you have

f(x) = |x+1| = \begin{cases}x+1&\text{if }x+1\ge0 \\ -(x+1)&\text{if }x+1

or more simply,

f(x) = \begin{cases}x+1&\text{if }x\ge-1\\-x-1&\text{if }x

On their own, each piece is differentiable over their respective domains, except at the point where they split off.

For <em>x</em> > -1, we have

(<em>x</em> + 1)<em>'</em> = 1

while for <em>x</em> < -1,

(-<em>x</em> - 1)<em>'</em> = -1

More concisely,

f'(x) = \begin{cases}1&\text{if }x>-1\\-1&\text{if }x

Note the strict inequalities in the definition of <em>f '(x)</em>.

In order for <em>f(x)</em> to be differentiable at <em>x</em> = -1, the derivative <em>f '(x)</em> must be continuous at <em>x</em> = -1. But this is not the case, because the limits from either side of <em>x</em> = -1 for the derivative do not match:

\displaystyle \lim_{x\to-1^-}f'(x) = \lim_{x\to-1}(-1) = -1

\displaystyle \lim_{x\to-1^+}f'(x) = \lim_{x\to-1}1 = 1

All this to say that <em>f(x)</em> is differentiable everywhere on its domain, <em>except</em> at the point <em>x</em> = -1.

4 0
3 years ago
How is using partial products to find the product of two 2-digit factors different and similar
Ierofanga [76]
It is different because you are doing a different method to complete the problem.  It is the same because it ends up with the same answer, provided you complete the process correctly.
3 0
3 years ago
Mark save $258 more than Neil. In fact Mark saved $7 for every $4 Neil saved. How much money did Mark say?
olasank [31]

Let

x---------> amount of money saved by Mark

x---------> amount of money saved by Neil


we know that

x=y+258-------> equation 1

x/y=(7/4)-------> equation 2

substitute equation 1 in equation 2

(y+258) /y=7/4--------> 4*(y+258)=7*y------> 4y+1032=7y

7y-4y=1032--------> 3y=1032------> y=$344

x=344+258------>x=$602


the answer is

$602

6 0
3 years ago
Beth needs 1 2/3 cups of sugar to make a cake and 2 1/4 cups to make a pie. How much sugar does she need to make both?
Brut [27]
Beth needs 3 11/12 cups
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3 years ago
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