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frutty [35]
3 years ago
9

Help me out I’m bad at this type of stuff

Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

the answer is 3 1/2 hours

Explanation: Just add all the fractions and numbers and subtract that by 9 1/4

You might be interested in
Given f(x) =x-7 and g(x) =x2 find g(f(4))
8090 [49]

Answer: g(f(4))=9

Step-by-step explanation:

To find g(f(4)), you first find f(4). Then, you plug it into g(x).

f(4)=4-7            [subtract]

f(4)=-3

Now, we know f(4) into g(x).

g(f(4))=(-3)²      [exponent]

g(f(4))=9

Now, we know that g(f(4))=9.

5 0
3 years ago
Two grandparents want to pick up the mess that their granddaughter had made in her playroom. One can do it in 15 minutes working
Crank

Answer:

  6 2/3 minutes

Step-by-step explanation:

Their rates in "jobs per hour" are ...

  (60 min/h)/(15 min/job) = 4 jobs/h

and

  (60 min/h)/(12 min/job) = 5 jobs/h

So, their combined rate is ...

  (4 jobs/h) + (5 jobs/h) = 9 jobs/h

The time required (in minutes) is ...

  (60 min/h)/(9 jobs/h) = (60/9) min = 6 2/3 min

Working together, it will take them 6 2/3 minutes.

5 0
4 years ago
Please I have my final now can someone help me with this fast
Mariana [72]

Answer:

option B

Step-by-step explanation:

Given :

y = \frac{2}{3}x + 3\\\\y = \frac{5}{2}x + \frac{7}{2}\\\\

Step 1 : simplify the equation :

3y = 2x + 9\\\\2y = 5x + 7\\

Step 2: Arrange the terms :

2x - 3y = - 9\\\\5x -2 y = -7

Step 3 : Solve for x and y :

                                2x - 3y = - 9 ------ ( 1 )

                                5x - 2y = - 7 --------- ( 2 )

                              _____________________

              ( 1 ) x 5 => 10x - 15y = - 45    ---------- (3 )

              ( 2) x 2 => 10x - 4y = - 14    ----------- (4 )

                             _______________________              

           ( 3 ) - ( 4 ) =>  0x - 11y = - 31

                                    - 11 y = - 31

                                        y = \frac{31}{11}

              Substitute y in ( 1 ) :

                     2x - 3y = - 9

                     2x - 3 (\frac{31}{11}) = - 9\\\\2x = -9 + 3(\frac{31}{11})\\\\2x = - 9 + \frac{93}{11}\\\\2x = \frac{-99 + 93}{11} \\\\2x = \frac{-6}{11} \\\\x = \frac{-6}{2 \times 11} = -\frac{3}{11}

Therefore the solution to the sytem is ( - \frac{3}{11} , \frac{31}{11})

The solution of the system of equation is a point which lies

on the both the lines.

Option A : False ,  It says the solution lies above one of the given line.

               But the solution of the system of equation always lies on

                both the line.

                     

Option B : True , says the solution is a point on the coordinate plane.

Option C : False, because if the solution is on the x-axis , then

                  the y coordinate in the solution would be zero.

                   But it  is not zero.

Option D : False , the solution is the point where both the lines intersect.

8 0
3 years ago
N=3 times 45 who many equations can you write it in
ale4655 [162]
Hi hope I can help, so first you do 45÷3 which = 15 so 15 is your answer
6 0
4 years ago
PLEASE NO LINKS Thanks :))
djverab [1.8K]

Answer:

C: 22 points.

Step-by-step explanation:

4 0
3 years ago
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