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stepladder [879]
3 years ago
15

What value of n makes the equation true?

Mathematics
1 answer:
djverab [1.8K]3 years ago
3 0
0.7n + 0.8n = 2.1
1.5n = 2.1 (add like terms(0.7+0.8=1.5))
n=2.1/1.5 (get en on its own)
n=1.40
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Determine the equation of the circle graphed below.
Diano4ka-milaya [45]

Answer:

(x - 6)^2 + (y - 2)^2 = 4

Step-by-step explanation:

Required

The equation of the circle

The equation of a circle is:

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

Where:

Center = (h,k)

radius \to r

From the graph, we have

(h,k) = (6,2)

r = 2

So:

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

(x - 6)^2 + (y - 2)^2 = 2^2

(x - 6)^2 + (y - 2)^2 = 4

6 0
3 years ago
Hich is an equation of a circle with center (-5, -7) that passes through the point (0, 0)?
Rzqust [24]
(a;\ b)-the\ coordinates\ of\ center\\r-the\ radius\\\\The\ equation\ of\ the\ circle:(x-a)^2+(y-b)^2=r^2\\\\The\ radius\ is\ equal\ the\ distance\ between\ points\ (-5;-7)\ and\ (0;\ 0)\\\\The\ distance\ between\ A(x_A;\ y_A)\ and\ B(x_B;\ y_B):\\d=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}\\\\subtitute:\\r=\sqrt{(0-(-5))^2+(0-(-7))^2}=\sqrt{5^2+7^2}=\sqrt{25+49}=\sqrt{74}\\\\\boxed{(x-(-5))^2+(y-(-7))^2=(\sqrt{74})^2\to(x+5)^2+(y+7)^2=74}
3 0
3 years ago
How could you model five students sharing four bags of popcorn equally how much will each student get
shutvik [7]
20 bags of popcorn they were sharing
8 0
3 years ago
Simplify.<br><br> |-10| + |5|
denis23 [38]
Hey there!

Here is your answer:

<u><em>The proper answer to this question is "10+5".</em></u>

Reason:

<u><em>I-10I=10</em></u>
<u><em>I5I=5 </em></u>
<u><em>Therefore this equation is simplified into 10+5!</em></u>

<em>Therefore the answer is 10+5=!</em>

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit
5 0
4 years ago
Read 2 more answers
Solve for x: 3(x + 1) = −2(x − 1) + 6
finlep [7]
<span>3(x + 1) = −2(x − 1) + 6
3x + 3 = -2x + 2 + 6
5x = 5
x = 1

answer
x = 1</span>
8 0
3 years ago
Read 2 more answers
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