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mrs_skeptik [129]
3 years ago
5

Solve the simultaneous equations.3x-y=1, 2x + 5y = 41​

Mathematics
1 answer:
inessss [21]3 years ago
3 0
Y=3x-1, Y=-2/5x + 41/5
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Find the coordinates of the midpoint of the line segment ab,where a and b have coordinates a(8.0),b(4.6)
umka2103 [35]
\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%  (a,b)
&({{ 8}}\quad ,&{{ 0}})\quad 
%  (c,d)
&({{ 4}}\quad ,&{{ 6}})
\end{array}\qquad
%   coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)
\\\\\\
\left( \cfrac{4+8}{2}~~,~~\cfrac{6+0}{2} \right)\implies (6~~,~~3)
4 0
3 years ago
Ava and Maria went shopping together. Eva spent $20 more than Maria. Together they spent $209.84. Write and solve an equation to
ad-work [718]

Answer:209.84 - 20.00 = 189.84 / 2 = 94.92

94.92 + 20.00 = 114.92 Eva spent and Martha spent $94.92

Step-by-step explanation:

5 0
3 years ago
Help pls this is my first question on here and I need help with this pls. I will give you the brainliest and a thanks!! :)) Can
docker41 [41]

Answer:

1. 18.85in

4. 25.13m

Step-by-step explanation:

I got you

So to find the circumference of any circle we use the equation 2pi(r)

2(3.1415)(3)= 18.85in for the first one because radius is half of the diameter which is 6 so half of 6 is 3

For 4. 4m is actually the radius so just plug that into the equation 2pi(4)=25.13m

4 0
3 years ago
Plz help- solve the inequality<br> -3(1 - z) &lt; 9<br> Use distributive property
Aleksandr [31]

Answer:

z

=

9

2

Step-by-step explanation:

anyway

good luck

5 0
3 years ago
The reciprocal of a number plus the reciprocal of three times the number equals 1/3. find the number.
Aleksandr-060686 [28]
1/x + 1/3x = 1/3
3+1=x
x=4
6 0
3 years ago
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