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myrzilka [38]
3 years ago
14

Question 23 on this pictured math sheet please. Have a great day!

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
3 0

Answer:

+2x+15

Step-by-step explanation:

-3x+5x=+2x

(+2x-7) × (+8)

(+2x)(+15)

I THINK

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Step-by-step explanation:

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3 years ago
N² + 14 = 12n<br>how do I solve by quadratic formula ​
inysia [295]

Answer:

n = 6 + \sqrt{22}  or  n = 6 - \sqrt{22}

Step-by-step explanation:

We can solve this equation using the quadratic formula OR Completing the Square method.

n² + 14 = 12n

rearrange :  n² - 12n + 14  = 0  

here  a= 1 , b = -12,  c = 14

the quadratic formula says:   x =  - b/ (2a)  +  root(b^2 - 4ac) / (2a)

or  x =  - b/ (2a)  -  root(b^2 - 4ac) / (2a)

x =  - (-12)/ (2)  +  root((-12)^2 - 4*14) / (2)

x = 6  +  root (144 - 56) / 2

x = 6 + root(88)/2

x = 6 + root(4*22) / 2

x = 6 + 2*root(22)/2

x = 6 + root(22)  = 6 + \sqrt{22}

so   x =6 + \sqrt{22}   or  x = 6 - \sqrt{22}

In this case  x = n

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3 0
3 years ago
Read 2 more answers
Find the values of x and y. lines that appear to be tangent are tangent
Ket [755]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value of  y  =  122^o

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Step-by-step explanation:

Generally the total angle that make up a circle is

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From the diagram we see that

    \theta _T  =  y^o + 238^o

=>    y^o  =  360  -238

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Generally angle that is formed as a result of interception of a chord and a tangent is equal to the intercepted arc divided by 2

 This implies that

           x =  \frac{y}{2}

substituting values

          x =  \frac{122}{2}

          x = 61^o

4 0
3 years ago
If 32% of a number is 64, what is the number?
AlekseyPX
The correct answer is 200 .
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If x = 9, what is the value<br> of 7x + 4?
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Answer:

67

Step-by-step explanation:

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