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gayaneshka [121]
3 years ago
15

Which expression can be used to check the answer to 56 divided (-14) = 4

Mathematics
1 answer:
nalin [4]3 years ago
8 0

Answer:

I think the answer is O 56 × (-14)

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zaharov [31]

Answer:

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Step-by-step explanation:

7 0
3 years ago
How many times does the graph of 4x = 32 - x2 cross the x-axis?
garik1379 [7]

Answer:

The graph crosses the x-axis 2 times

The solutions are  x = -8  &  x = 4

Step-by-step explanation:

Qaudratics are in the form ax^2 + bx+ c

Where a, b, c are constants

Now, let's arrange this equation in this form:

4x=32-x^2\\x^2+4x-32=0

Where

a = 1

b = 4

c = -32

We need to know the discriminant to know nature of roots. The discriminant is:

D=b^2-4ac

If

  • D = 0 , we have 2 similar root and there is 2 solutions and that touches the x-axis
  • D > 0,  we have 2 distinct roots/solutions and both cut the x-axis
  • D < 0,  we have imaginary roots and it never cuts the x-axis

Let's find value of Discriminant:

D=b^2-4ac\\D=(4)^2 -4(1)(-32)\\D=144

Certainly D > 0, so there are 2 distinct roots and cuts the x-axis twice.

We get the roots/solutions by factoring:

x^2+4x-32=0\\(x+8)(x-4)=0\\x=4,-8

Thus,

The graph crosses the x-axis 2 times

The solutions are  x = -8  &  x = 4

6 0
3 years ago
Read 2 more answers
I'm sorry but I have another one!
SIZIF [17.4K]
No mode or 43 i know the 43 sounds crazy but with math now days you never know.
8 0
3 years ago
a record store is having a sale during which all items will be sold at 25% less then marked prices. How much will a CD marked $1
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Answer:

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Step-by-step explanation:

If you're taking off 25% of the regular cost, "taking off" means subtracting.  So if we subtract 25% OF 16, the word "of" means to multiply here.  So our expression then becomes:

16 - .25(16)

16 - 4 = 12

So the CD will sell for $12.

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3 years ago
ASAPPP HURRY 25 POINTS!!!
puteri [66]

Answer:

They are equal to each other, because one vertical angle is a reflection of the other. True

They are not equal to each other, because one vertical angle is not a reflection of the other. False

They are equal to each other, because one vertical angle is supplementary to the other. False

They are not equal to each other, because one vertical angle is not supplementary to the other. False

8 0
3 years ago
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