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jonny [76]
3 years ago
15

Need help step by step. Thanks

Mathematics
2 answers:
Alinara [238K]3 years ago
7 0

Answer:

3: x=1

4: x=8 AND -4

Step-by-step explanation:

3: x^2+12x+36=49

Subtract 36 from both sides

X^2+12x=13

X has to equal 1, because:

1^2+12=13

13=13

4:

x^2-4x-32=0

Multiply -32 by x^2

      -32x^2

       -4x

What number times another number equals -32?

What number plus another number equals -4?

         -32x^2

-8x                     4x

        -4x

Complete the square

 -8       -8x                 -32

 x       x^2              4x

           x                 4  

(Factors are in bold)

then, x-8=0, x=8

AND

x+4=0

x=-4

Tom [10]3 years ago
5 0

Step-by-step explanation:

All of these are quadratic formula problems. Remember to properly use the quadratic formula, ax^2+bx+c=0.

For 3:

x^2+12x+36=49

x^2+12x-13=0

Using quadratic formula:

(-12+/-(12^2-4(1)(-13))^.5)÷2(1)

(-12+(196)^.5)/2=(-12+13)/2=1/2

=(-12-13)/2=-25/2

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Answer:

Circle B

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Step-by-step explanation:

1. The diameter is twice the radius, so the diameter of Circle B is ...

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This diameter is greater than the 9 cm diameter of Circle A, so Circle B is larger and will have a larger circumference.

2. The circumference is the product of π and the diameter. Then the difference between the two circumferences is ...

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Answer:

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7 0
3 years ago
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3 0
2 years ago
Does the table describe x as a function of y?
kicyunya [14]

Answer:

C. No, more than one output value x is assigned to the input y-value

Step-by-step explanation:

Given

х      у

-3    -2

3     6

0      7

1       7

2      4

3     - 1

Required

State if the table shows x as a function of y

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x = f(y)

i.e. x represents the output while y represents the input of the function

Note that each value of y (input) must be assigned to separate values of x (output) for a function to be established

Having said;

Next step: We have to examine the x and y column

In the y column, the value 7 occurred twice (as shown below)

<em>х      у </em>

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<em>1       7 </em>

<em />

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7 0
3 years ago
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muminat

9514 1404 393

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We want to find t such that ...

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6 0
2 years ago
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