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Marianna [84]
3 years ago
6

Round 123.1867 to the nearest thousandth​

Mathematics
2 answers:
zvonat [6]3 years ago
3 0

Answer:

123 is the nearest value

Radda [10]3 years ago
3 0
The answer is 123.187
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Solve for x: -3(x + 1)= -3(x + 1) - 5
Alex Ar [27]

Answer:

<h2>No solution : 0= -5</h2>

Step-by-step explanation:

-3\left(x+1\right)=-3\left(x+1\right)-5\\\\\mathrm{Add\:}3\left(x+1\right)\mathrm{\:to\:both\:sides}\\\\-3\left(x+1\right)+3\left(x+1\right)=-3\left(x+1\right)-5+3\left(x+1\right)\\\\\mathrm{Simplify}\\\\0=-5\\\\\mathrm{The\:sides\:are\:not\:equal}\\\\\mathrm{No\:Solution}

6 0
4 years ago
PLEASE HELP!!!!!! The line of symmetry for the quadratic equation y = ax 2 - 8x - 3 is x = 2. What is the value of "a"?
nataly862011 [7]
y= ax^{2} -8x-3

1.

the line of symmetry is x=2, means that the x coordinate of the vertex is x=2.

the point x=2 is the midpoint of the roots x_1 and x_2. 

so 
\frac{x_1+x_2}{2}=2&#10;
x_1+x_2=4

Remark: in the x-axis, if c is the midpoint of a and b, then c= \frac{a+b}{2}


2.
since x_1 and x_2 are roots 

a(x_1)^{2} -8(x_1)-3=0 and a(x_2)^{2} -8(x_2)-3=0

3.
equalizing:

a(x_1)^{2} -8(x_1)-3=a(x_2)^{2} -8(x_2)-3

a(x_1)^{2} -8(x_1)=a(x_2)^{2} -8(x_2)

a(x_1)^{2}-a(x_2)^{2} =8(x_1) -8(x_2)

in the left side factorize a, in the left side factorize 8:

a[(x_1)^{2}-(x_2)^{2}] =8(x_1 -x_2)

in the right side use the difference of squares formula:

a(x_1 -x_2)(x_1 +x_2) =8(x_1 -x_2)

simplify by (x_1 -x_2)

a(x_1 +x_2) =8

substitute (x_1 +x_2) with 4:

a*4 =8

a=2


Answer: C)2

5 0
4 years ago
Eduardo rides his bicycle for 6 hours. What was Eduardo's average speed if he rides a distance
Juli2301 [7.4K]

Answer:

14 mi per hour

Step-by-step explanation:

14x6 equals 84

5 0
3 years ago
How would the following graph look y=1/sin ?
seraphim [82]
Not necessarily the case, because the function tends to infinity when sin(x) approaches 0 and it is 1 (minimum value) when sin(x) = 1. Look at the picture to know what it looks like.

6 0
4 years ago
Solve.<br><br><br><br> −3(n + 8) = 15<br><br><br><br> The solution is n = <br><br> .
Vladimir [108]
First, we can do distributive property.

-3(n + 8) = 15

-3 x n = -3n, -3 x 8 = -24 

So we have, -3n + -24 = 15
 
Minus -24 on both sides of the equal sign.

-3n + -24 - -24 = 15 - -24 

-3n = 39

Divide 3 on both sides.

-3n/-3 = 39/-3

n = -13

Hope i helped!! :D
5 0
3 years ago
Read 2 more answers
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