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FinnZ [79.3K]
4 years ago
14

Given a polynomial f(x), if (x + 7) is a factor, what else must be true? Help plzzz im running out of time

Mathematics
1 answer:
solong [7]4 years ago
4 0
Answer: f(-7) = 0
For the factored form of f(x), if x = -7, then one of the factors will be equal to 0, since (-7 + 7) = 0. This will cause the entire y-value to be 0, because anything multiplied by 0 = 0.
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Use the rules for long division to divide 724 by11
zalisa [80]
                 __ ← that is a bar representing that it is ongoing. 
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    ______           2)72 goes in 11 6 times so u put 6 next to x
11 | 724.00           3)6 times 11 is 66
    -66↓ ↓ ↓           4)subtract 66 by 72 and get 6
     __↓ ↓ ↓           5)bring down the 4 and put it next to the 6 getting 64.
       64 ↓ ↓           6)64 goes into 11 5 times
      -55 ↓ ↓           7)put the five next to the x6
      ___↓ ↓           8)11 times 5 is 55        
          90 ↓           9)subtract 55 from 64 and get 9  
         -88 ↓           10)bring the decimal up
        ___ ↓           11)gring down the zero *remember*:*a zero has unlimited 
             20               zeros*
              -11           12)90 goes into 11 8 times so put a 8 next to x65.
             __            13)11 times 8 is 88
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                             15)bring down another zero
                             16)20 goes into 11 1 time so put a one next to x65.8
                             17)subtract 11 from 20 and get 9
                             18)it is not ongoing so put a bar over the answer
                            __ 
the answer is 65.81 or u can round it, 65.8182
5 0
3 years ago
I’m a bit confused does someone know how to help?
Firlakuza [10]

Answer:

its b

Step-by-step explanation:

3 0
3 years ago
Can someone plz help me with this problem and plz show work.
motikmotik

Answer:

C

Step-by-step explanation:

y = 2x + 5

the slope (m) of this line is 2 (which can be written as 2/1)

The slope of a perpendicular line is -1/m (the reciprocal of the slope with the opposite sign)

so m = 2/1 => -1/m = - 1/2 = the slope of a line perpendicular to y = 2x + 5

3 0
4 years ago
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LenKa [72]

Answer: how do you solve for this

Step-by-step explanation:

7 0
3 years ago
A spring has natural length 20 cm. Compare the work W1 done in stretching the spring from 20 cm to 30 cm with the work W2 done i
Ksju [112]

Answer:

W₂ is three times W₁ (W₂ = 3W₁)

Step-by-step explanation:

Applying,

W = ke²/2............. Equation 1

Where W = workdone in stretching the spring, k = spring constant, e = extension.

For W₁,

W₁ = ke₁²/2

Given: e₁ = 30-20 = 10 cm = 0.1 m

Substitute these value into equation 1

W₁ = k(0.1²)/2

W₁ = 0.005k Joules

For W₂,

W₂ = (ke/2)-W₁

Given: e = (40-20) = 20 cm = 0.1 m

Substitute these value into equation 1

W₂ = (k×0.2²/2)-0.005

W₂ = 0.015k Joules.

W₂/W₁ = 0.015k/0.005k

W₂/W₁ = 3

Therefore,

W₂ = 3W₁

3 0
3 years ago
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