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Kazeer [188]
3 years ago
13

Please Help  Me With These QUESTIONS!!!!!!! I Give Thanks!!!!!!!

Mathematics
1 answer:
Bezzdna [24]3 years ago
8 0

1).  Total cost for a rental = $12 just to talk to them +  $8 per hour .

                     $44              =  12        + 8 (number of hours)

                       32              =                  8 (number of hours.
____________________

2).  333 = 6 x (number of students on each bus) + 9 mores students

       324 = 6 x (number of students on each bus) .
______________________________

3).  If all 3 numbers were the same number,
then each one would be  1/3 of 138.  That's 46 .

Take 1 away from one of the 46s and add it on to another 46 .
Their sum is still 138, but now you have 3 consecutive numbers.
________________________________

4).   $150 = cost of 6 books  +  $12 left over.

        $138 = cost of 6 books.
_________________________________

5).  If all three numbers were the same number,
then each of them would be  1/3 of 84.  That's  28.

Take 2 away from one of the 28s, and add it onto another one.  
Their sum is still 84, but now you have 3 consecutive even numbers.
_________________________________

6).  Keith has 45 cards today.
      This morning, before his dog ate any of them, he had 90.
       That was after he bought 6 new ones.
___________________________________

7).  Sandy has 14 comic books.
      Before she bought 6 new ones, she had 8 .
      That's the half she had left after she sold half of them.        
___________________________________

8).  Sally has $11 now.
       Before she earned $9 washing the car, she had $20 .
       That's the half she had left after she spent half at the movies.           
____________________________________

9).  Fred spent $31 for a soft drink and 7 candy bars.
      $3 of that was for the drink, so the 7 candy bars cost $28 .
_____________________________________

10). If all three numbers were the same number, then
each one would be  1/3 of 105.   That's  35 .
                  
Take 2 away from one of the 35s and
add it onto another one.

They still all add up to 105, but now you have
three consecutive odd numbers.

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Which of these functions has an inverse function? Select all that apply.
ElenaW [278]

ANSWER

y=x

y=x³

EXPLANATION

A function, f(x) has an inverse if and only if

f(a) = f(b)   \Rightarrow \: a = b

Thus, the function is one to one.

For y=x or

f(x) = x

f(a) = f(b)   \Rightarrow \: a = b

Hence this function has an inverse.

For the function y=x² or f(x)=x².

f(a) = f(b)   \Rightarrow \:  {a}^{2} =  {b}^{2} \Rightarrow \: a =  \pm \: b

This function has no inverse on the entire real numbers.

For the function y=x³ or f(x)=x³

f(a) = f(b)   \Rightarrow \:  {a}^{3} =  {b}^{3} \Rightarrow \: a = b

This function also has an inverse.

For y=x⁴ or f(x) =x⁴

f(a) = f(b)   \Rightarrow \:  {a}^{4} =  {b}^{4} \Rightarrow \: a =  \pm \: b

This function has no inverse over the entire real numbers.

5 0
2 years ago
Read 2 more answers
Mrs. Jordan participates in a math contest. She completes each question in 1/2
marysya [2.9K]

it takes mrs. jordan 24 minutes to complete 12 questions.

if she completes each question in 1/2 a minute, then:

1/2 / 12 questions = 24 minutes.

5 0
3 years ago
Resolver las siguientes desigualdades<br> 3y&lt;6<br> -x/2&gt;2<br> Y+8&gt;9<br> -3x &lt;15
Crazy boy [7]

Answer:ndbdnd ndbdnd 192

Step-by-step explanation:

BBB as haha

8 0
3 years ago
Please help me find the area
photoshop1234 [79]

Answer:

240 square units

Step-by-step explanation:

rectangle= 20x10=200

triangle= 1/2(4)(20)=40

200+40=240

8 0
2 years ago
Read 2 more answers
Solve the equation: 3(x - 2) = 36<br><br><br><br><br> X=-5<br> X=14<br> X=10<br> X=5
Paul [167]
3(x-2)=36
3x-6=36
3x=36+6
3x=42
x=42/3
x=14
Answer: 14
I hope this helped mate!
8 0
3 years ago
Read 2 more answers
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