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Elza [17]
3 years ago
9

When adding the numbers 4+9+7+6+3 you can make one group of 10.True or False

Mathematics
1 answer:
Keith_Richards [23]3 years ago
6 0

Answer:

false

Step-by-step explanation:

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7y-23 plus 23x-16 plus 8x -21 find x and Y show steps please
Solnce55 [7]
7y - 23 + 23x -16 + 8x - 21  
31x + 7y - 60  
What is the original problem equal to? You can't go any further unless you know.
6 0
3 years ago
A psychological researcher did a study with a sample of 84 boys and found that the meam length of time that they remained engage
Varvara68 [4.7K]
Sample size= n= 84
sample mean= x = 107 s
population standard deviation =σ= 11.7

As, population standard deviation is given so we use the estimate:
                             x(+/-) z(α/2)(σ/√n)

At 99% Confidence interval means significance level is α=1-0.99= 0.01
So,
α/2=0.005
Now, z at α/2=0.005 
z= 2.576
Now, by putting values 
                               107(+/-)((2.576)(11.7/√84)) 
              ( 107-((2.576)(11.7/√84)), 107+((2.576)(11.7/√84))  )    
               (103.7, 110.288)                      


                                         
4 0
3 years ago
Please help me anyone
dolphi86 [110]

Answer:

115

Step-by-step explanation:

When x = -11, x^2 = 121. y = 121 - 6 = 115.

Hope this helped,

~cloud

7 0
3 years ago
Read 2 more answers
If a quadratic function has an axis of symmetry of x = 2 and a zero of-1. Which of the
USPshnik [31]

The line of symmetry is the center/ middle of the parabola where the curve shifts. Since the line of symmetry is at x=2 and the zero is at x= -1, you have the find the difference between the values which is 3. So the other zero is three the right of the line of symmetry at x= 5.

5 0
3 years ago
Choose all of the equations that are equivalent to 8k = 20.
Klio2033 [76]

Answer:

D

Step-by-step explanation:

it's 100% I'm super sure

6 0
2 years ago
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