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lukranit [14]
3 years ago
10

How do you solve the system of linear equation by multiplying? 5x - 2y = 11 3x + 5y = 19

Mathematics
1 answer:
uranmaximum [27]3 years ago
4 0
5x-2y=11 X=(11+2•2)#5
5x=11+2y X=15#5
X=(11+2y)#5 X=3

3x+5y=19
3•(11+2y)#5+5y=19
(33+6y)#5+5y=19
(33+6y+25y)#5=95#5
33+31y=95
31y=62
Y=2
#significa divisão
•significa multiplicação
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The county fair charges $1.25 per ticket for the rides. Jermaine bought 25 tickets for the rides and spent a total of $43.75 at
satela [25.4K]
The total cost is the dependant variable and the number of tickets along with flat out price is the independent variable.

The equation would be y = 1.25x + ?

You would insert 25 for x which equals 31.25 and insert 43.75 for y.

43.75 = 31.25 + ? Then subtract 31.25 from both sides of the equation and you would get....

12.5 = ?

That is your flat rate to get in to the fair 




7 0
4 years ago
What is the solution of 4 startroot 5 x 66 endroot = x 10? x = –10 x = 3 x = –10 or x = 3 no solution
eduard

Answer:

x=3

Step-by-step explanation:

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4 0
2 years ago
Simplify the following expression (30/45g+20)-(8/9g+7)
amid [387]

The answer is: 13-\frac{2}{9}g

The explanation is shown below:

1- You have the following expression given in the exercise:

(\frac{30}{45}g+20)-(\frac{8}{9}g+7)

2- When you multiply signs, you obtain:

\frac{30}{45}g+20-\frac{8}{9}g-7

3. Now, you must add like terms, as following:

-\frac{2}{9}g+13

4. Therefore, you have that the expression simplified is:

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8 0
3 years ago
classify the pair of angles. (supplementary, adjacent, vertical, or complementary) then find the value of x.
earnstyle [38]

Answer:

Supplementary angles; 148°

Step-by-step explanation:

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3 years ago
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Yo sup??

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

to find the x intercept put y=0

0=(x+4)(x-2)

so either x=-4 or x=2

Therefore the graph intersects the x axis at -4 and 2

Lenght of x intercept=|-4-2|=6 units

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

=x^2+2x-8

This is an upward opening parabola

To find the coordinates of the vertex we can apply the formula

(-b/2a,-D/4a)

b=2

a=1

D=b^2-4ac

=4-4*1*(-8)

=4+32=36

Vertex=(-2/2*1,-36/4*1)

=(-1,-9)

Hope this helps.

3 0
3 years ago
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