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VARVARA [1.3K]
3 years ago
15

Which functions have real zeros at 1 and 4? Check all that apply.

Mathematics
2 answers:
Vikentia [17]3 years ago
7 0
F(x) = x^2 -5x +4
f(x) = -2x^2 +10x-8
zalisa [80]3 years ago
3 0

Answer:

B and D

f(x) = x^2 -5x +4

f(x) = -2x^2 +10x-8

Step-by-step explanation:

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What is the simplified form of the following expression? 4/7^3
timofeeve [1]
If your question is :
\frac{4}{7^3}

Then the answer is:
\frac{4}{7*7*7} =  \frac{4}{343}

If your question is:
(\frac{4}{7}) ^{3}

Then the answer is:
\frac{4*4*4}{7*7*7} =  \frac{64}{343}
6 0
3 years ago
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Which statements describe negative integers? Check all that apply A ship sank to 25 meters below sea level. Josué climbed up 32
babunello [35]

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The first one and the last one

Step-by-step explanation:

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Ashlee would like to buy a sweater that cost 46.90. How much tax would she pay if the tax rate is 3%?
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Answer:

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Step-by-step explanation:

7 0
3 years ago
A restaurant sells only two desserts,pie and cake.A piece of pie cost $4.A piece of cake cost $5.The restaurant sells 100 desser
liraira [26]
Let p and c be the pieces of pie and cake respectively.

We have p+ c= 100 (because the total number of pieces of pie and cake is 100).

On the other hand, we have $4p+ $5c= $473
or 4p+ 5c= 473

p+c=100
4p+5c=473

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3 0
3 years ago
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What multiplies to -900 and adds to 5?
liq [111]
Xy = -900
x + y = 5

     x + y = 5
x - x + y = -x + 5
           y = -x + 5

                                                xy = -900
                                      x(-x + 5) = -900
                                  x(-x) + x(5) = -900
                                       -x² + 5x = -900
                             -x² + 5x + 900 = 0
               -1(x²) - 1(-5x) - 1(-900) = 0
                          -1(x² - 5x - 900) = 0
                                       -1            -1
                               x² - 5x - 900 = 0
                               x = -(-5) ± √((-5)² - 4(1)(-900))
                                                      2(1)
                               x = 5 ± √(25 + 3600)
                                                  2
                               x = 5 ± √(3625)
                                             2
                               x = 5 ± 5√(145)
                                           2
                               x = 2.5 ± 2.5√(145)

                          x + y = 5
   2.5 ± 2.5 √(145) + y = 5
- (2.5 ± 2.5√(145)       - (2.5 ± 2.5√(145)
                                y = 2.5 ± 2.5√(145)
                          (x, y) = (2.5 ± 2.5√(145), 2.5 ± 2.5√(145))

The two numbers that add up to 5 and multiply to -900 are 2.5 ± 2.5√(145).
6 0
3 years ago
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