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hjlf
3 years ago
6

solve this system of linear equations separate the x- and y- values with a comma 6x=-32-10y 11x=8-10y

Mathematics
1 answer:
Evgen [1.6K]3 years ago
5 0
Hello :
<span>6x=-32-10y  ...(1)
11x=8-10y ....(2)
by (1) : x = -32/6 -(10/6)y  .....(*)
 x = -16/3-(5/3)y
subst in (2) : 11(</span>-16/3-(5/3)y)-10y  .......calculate y....then x by : (*)
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Lemon goes to the store and buys a game station for $25. The store is running a discount of 15%. What is the price of the game s
TEA [102]

Answer:

$21.25

Step-by-step explanation:

1. Convert the 15% to a decimal by dividing by 100.     15 ÷ 100 = 0.15

2. Multiply the $25 by the decimal of 15%.                    25 × 0.15 = 3.75

3. Subtract your previous answer (3.75) from the original price of the game station.        25 - 3.75 = 21.75

4. Therefore the price of the game station after the discount is $21.75.

7 0
3 years ago
Determine which statements are true about the extrema of the graphed fourth degree polynomial. Select all that apply.
dusya [7]

C and D are the answers


7 0
3 years ago
Read 2 more answers
IF U ANSWER THIS U ARE SWAG
Andrews [41]
Equilateral: "equal"-lateral (lateral means side) so they have all equal sides. Isosceles: means "equal legs", and we have two legs, right? Also iSOSceles has two equal "Sides" joined by an "Odd" side. Scalene: means "uneven" or "odd", so no equal sides.
8 0
2 years ago
Law of cosines.Anyone good in Trigonometry?​
marin [14]

Answer:

c=11.8\ units

Step-by-step explanation:

we know that

The formula of law of cosines is equal to

c^2=a^2+b^2-2(a)(b)cos(C)

where

a, b and c are sides. C is the angle opposite side c

In this problem we have

a=3\ units\\b=10\ units

C=120^o

substitute the given values

c^2=3^2+10^2-2(3)(10)cos(120^o)

c^2=109-(60)cos(120^o)

c^2=109-(60)(-0.5))

c^2=109+30

c^2=139

c=11.8\ units

3 0
3 years ago
Two more than the square of a number is 123 what is the number? Can someone please explain to me how to do this
max2010maxim [7]

Give the number a label.  That can be anything you want.  A lot of people will use 'x' every single time they do a math problem,but there's no reason to do that and it's boring.  Let's call our number ' M ' for 'Mystery number'.  OK ? 

                                             The number . . . M
                       The square of the number . . . M²
Two more than the square of the number . . . M² + 2

You said that this is equal to 123,  so we can write    <u> M² + 2 = 123</u>

That's the equation we have to take and solve for ' M '.

Subtract  2  from each side of the equation, and you have    M² = 121 .

Take the square root of each side:    M = √121 .

The Mystery number is the square root of  121.

If you don't happen to know what that is, then you can use your pocket
calculator, or the calculator that comes with your computer (if you know
how to find it).  They will all tell you that the square root of  121  is  <em>11</em> .

That's a fine and wonderful answer, but technically, it's only half of the
answer.  Any equation that has something squared in it almost always
has two solutions, and this one does.

The square root of  121  is a number that gives you  121  when you
multiply it by itself.  ' 11 ' does that:  (11 x 11) = 121 .  Is there <em><u>another</u></em>
number that does the same thing ?

How about ' -11 ' ?  Look at this:  ( -11 x -11 ) = 121 .  (Remember that
if both numbers being multiplied have the <em>same sign</em>, then their product
is positive.)

The bottom line is:  The mystery number is<em>  +11</em>  and also<em>  -11</em> .
Either one does what you want . . . When you square it and then
add  2  more, you get  123  either way.


6 0
3 years ago
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