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lisov135 [29]
3 years ago
5

1. Given: f(x)= x* - 6x² + 7x-6

Mathematics
1 answer:
Naya [18.7K]3 years ago
6 0
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How many two digit whole numbers can be written as the sum of two different single digit whole numbers? Lots of points, and will
klio [65]

You want x+y>9. We can go about this by casework. WLOG x=9, we have 8 digits: 1-8. With x=8 we have 2-9, but we already counted 8 and we already considered the 9 case, so we have 2-7 actually, which will give us 6 numbers. With x=7, with the same logic we are only looking for the numbers 3-6 which there are 4 of. With x=6, you are looking for the numbers 4-5 which are 2. With x=5 run out of numbers to pick. The numbers are indistinguishable and it does not matter whether we use x or y so we just have to ad up the cases we already have to get: 20.

4 0
3 years ago
Read 2 more answers
HELPPPPP
Maslowich

Answer:

  • B. g(t) = -16t² + 80t

Step-by-step explanation:

<u>Given function:</u>

  • g(t) = -16t² + vt + h

A model rocket is launched off the ground at an initial velocity of 80 feet per second.

<u>This gives us </u>

  • h = 0 and v = 80

<u>The function becomes:</u>

  • g(t) = -16t² + 80t

Correct option is B.

8 0
3 years ago
If AB = x+ 4, BC = 2x -10 and AC
lawyer [7]

Answer:

15

Step-by-step explanation:

By the diagram, you can see the sum of segment AB and segment BC is segment AC. Adding the given expressions for AB and B is 3x-6. Simplifying the equation 3x-6=2x+1, gives x=7. Substituting x=7 in the equation for segment AC gives 15.

8 0
3 years ago
The circumference of a circular field is 194.68 yards. What is the radius of the field? Use 3.14 for in and do not round your an
TEA [102]

Answer: 30.9842843211

Step-by-step explanation:

194.68÷3.14= 61.9685686423

61.9685686423÷2= 30.9842843211

8 0
4 years ago
Solve: x^4 + 2x^3 - x^2 - 4^x - 2 = 0.​
natta225 [31]

By defferentiating the about using product rule

vdyu/dx +udvdx

dy/dx 4×^3 +6×^2-4× -4=o

7 0
3 years ago
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