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Gnoma [55]
3 years ago
6

Simplify the expressioh 6.9-(-5)+4.1

Mathematics
1 answer:
barxatty [35]3 years ago
6 0
This would be 16. When you subtract a negative number, it’s really like adding. Once this part is done, the expression would be 11.9+4.1. 11+4=15 and 0.9+0.1= 1. 15+1= 16.
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In a class in which the final course grade depends entirely on the average of four equally weighted 100-point tests, David has s
jasenka [17]

Answer:

The answer in interval notation is ( 73 ,  100 )

Step-by-step explanation:

If we call x and y the lower and upper values for David to get an average of 80 and 89 respectively, we can calculate these two values solving a pair of equations:

(81  +  92  + 74  +  x ) / 4  = 80     ⇒   (247  +  x  )/4 = 80

247  +  x  =  320    ⇒    x  =  320 - 247

x  =  73

And

(81  +  92  + 74  +  y ) / 4  = 89     ⇒   ( 247  +  y ) / 4  =  89

247   +  y  =   356

y  =  356  -  247

y  =  109

But tests are a 100-point test

Then the answer in interval notation is ( 73 ,  100 )

4 0
3 years ago
I need help finding the answer
mezya [45]
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7 0
3 years ago
Help this is due today!!!!!!!
oee [108]
The answer I believe is 5 because 2 vases hold 10 red roses and 5 yellow roses. But since the person has 3 vases but it has to be the same amount as the first person. They would both have 30 flowers in their vases. But then each of the vases has 6 red roses so you just do 30 divided by 6 and you get 5.
4 0
3 years ago
F(x)=-9x^2-7x+8, x=5
VashaNatasha [74]
F(x) = -9x^2 - 7x + 8
f(5) = -9(5^2) - 7(5) + 8
f(5) = -9(25) - 35 + 8
f(5) = - 225 - 35 + 8
f(50 = - 252 <==
4 0
3 years ago
Which interval for the graphed function contains the local maximum?
Nonamiya [84]

Answer:

[0,2]


Step-by-step explanation:

local maximum is a maximum within some region of x values

6 0
3 years ago
Read 2 more answers
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