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Mrrafil [7]
3 years ago
8

9,2 and 4,9 simplify answer

Mathematics
1 answer:
EleoNora [17]3 years ago
7 0
If your talking about fraction just find a common number the tow fractions have and divide
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Homer wants to identify the center and radius of the circle defined by the equation x2 + y2 - 14x +
Klio2033 [76]

Homer has made mistake in step 2

When you complete the square, you need to add the values to both sides of equation

<em><u>Solution:</u></em>

<em><u>Given equation of circle:</u></em>

x^2 + y^2 -14x + 2y -25 = 0

Let us first calculate center and radius and find out where he did the mistake

<em><u>Step 1:</u></em>

Group the terms

x^2 -14x + y^2 + 2y = 25\\\\(x^2 -14x) + (y^2 + 2y) = 25

<em><u>Step 2:</u></em>

(x^2 -14x + 49) + (y^2 + 2y + 1) = 25 + 49 + 1

But homers step 2 is:

(x^2 -14x + 49) + (y^2 + 2y + 1) = 25

So homer has made mistake in this step

When you complete the square, you need to add the values to both sides of equation

But homer did not add 49 and 1 to right side of equation

Correct steps are:

(x^2 -14x + 49) + (y^2 + 2y + 1) = 75\\\\(x-7)^2 + (y+1)^2 = 75

Comparing general equation of circle,

(x-h)^2 + (y-k)^2 = r^2

Therefore, center is ( 7, -1) and radius is 8.66

8 0
3 years ago
Im struggling on this can someone explain it to me
AleksandrR [38]

Answer:

B. 31°; 106° and 43°.

Step-by-step explanation:

1) the rule is:

(5x-7)+(3x+1)+(11x-4)=180°;

2) if to solve this equation, then x=10°;

3) if x=10, then after the substitution the answer is 43;31;106.

6 0
3 years ago
3. What are the factors in this expression 9+ (x-7)(Y+6)
stepladder [879]
Try 6578 :) I think that may be right,
7 0
3 years ago
What is the value of 6n-2
ad-work [718]
<span>Factor <span><span>6n</span>−2
</span></span><span><span>6n</span>−2
</span><span>=<span>2<span>(<span><span>3n</span>−1</span>)
</span></span></span><u>Answer: </u><span>2<span>(<span><span>3n</span>−1</span><span>)</span></span></span>
5 0
3 years ago
A tree in John's backyard has been growing for 4 1/2 years. The tree is 4/5 meters tall. What is the unit rate in meters per yea
STatiana [176]

Answer:

<u>5 127/200 meters</u>

Step-by-step explanation:

4 1/2 = 4 5/10 | 4/5 = 8/10

--------------------------------------

4 5/10 = 4.5 | 8/10 = 0.8

--------------------------------------

4.8 divided by 0.8 = 5.625

--------------------------------------

5.635 = 5 635/1000

635/1000 divided by 5 = 127/200

--------------------------------------

5 + 127/200 = <u>5 127/200</u>

4 0
3 years ago
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