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tia_tia [17]
4 years ago
15

Which of the following expressions do not have a result of zero? Why don't they? If not zero, what is their result? Express your

answer in complete sentences.
0 x (-7)
-8 - (-8)
0/(-4)
6/0
Mathematics
1 answer:
ludmilkaskok [199]4 years ago
5 0

Answer:

6/0

Step-by-step explanation:

1. 0

2. 0

3.0

4. it can't divide

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Sylvie is 3 years older than twice edders age if sylvie is 27 years old how old is edder
Mama L [17]
Edder is 12
2x+3=27
-3
2x=24
/2
x=12
3 0
3 years ago
Let f(x)= 8/(1+3e^−0.7x)
Nataly [62]

Answer:

  0.31

Step-by-step explanation:

This is a good question to ask your calculator. Be sure to use appropriate parentheses. You need them around the exponent of e as well as around the denominator.

8 0
3 years ago
a 16 inch wire is to be cut. one piece is to be bent into the shape of a​ square, whereas the other piece is to be bent into the
Lyrx [107]
1. Let x be a length of square side, then the square perimeter is 4x (you need to cut 4x from 16 in. to make a square with side x in.). Then 16-4x is remained length of wire and you have to make form this piece a rectangle with sides one of which is twice bigger than another. If y is length of the smaller side, then 2y is length of the bigger side and rectangle perimeter is y+2y+y+2y=6y. You have 16-4x in. of wire left, so 6y=16-4x and y= \frac{16-4x}{6}.

2.
 A_{square}=x^2 \\ A_{rectangle}=y\cdot 2y=\frac{16-4x}{6}\cdot2\cdot\frac{16-4x}{6}= \frac{(16-4x)^2}{18}  \\ A(x)=A_{square}+A_{rectangle}=x^2+\frac{(16-4x)^2}{18}.

3. Find the derivative of the function A(x): 
A'(x)=2x+ \dfrac{2(16-4x)\cdot(-4)}{18} =2x- \dfrac{4(16-4x )}{9}.

4. Solve the equation A'(x)=0: 
2x- \dfrac{4(16-4x )}{9}=0 \\ 18x-64+16x=0 \\ 34x=64 \\ x= \frac{32}{17}

5. Since y= \frac{16-4x}{6} you have

y= \dfrac{16-4 \frac{32}{17} }{6} = \dfrac{16\cdot17-4\cdot32}{6\cdot 17} = \dfrac{24}{17}.

Answer: <span>the width of the rectangle is \frac{24}{17}</span>




6 0
3 years ago
Lily read 4 books in December and read 7 books in January. What percent did she increase the number of books she read?
OLEGan [10]

Answer: 175%

Step-by-step explanation:

7/4 x 100 = 1.75

5 0
3 years ago
The median of the data set is 18 what number is missing 12,17,21,13,25
marta [7]

Answer:

19

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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