A system of equations is given. Equation 1: 4x-6y=10 Equation 2: 9x+2y=7

Answers

Answer 1

Answer: Solve for the first variable in one of the equations,
then substitute the result into the other equation.
x = 1 ; y = - 1

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Sequence 1,2,3,6,18,108 multiply the previous 2 terms to get the next term

Answers

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I need help choosing which multiple choice the answer would be ?

Answers

Add 6 to both sides
So answer B

HEEEEEELP

question in the attached picture

Answers

1) $x^(2) +2x-10=0$
a=1
b=2
c=-10
$x= \frac{-(2) +or- \sqrt{ 2^(2)+4(1)(-10) } }{2(1)}$
$x= (-2 + or - √(4+40) )/(2)$
$x= (-2 +or- √(44) )/(2)$
$x= (-2+or- 2√(11) )/(2)$
$x= -1+or- √(11)$
$√(11)=3.32$
-1+3.32 = 2.32
-1-3.32 = -4.32

2) $x^(2) -2x-9=0$
a=1
b=-2
c=-9
$x= \frac{-(-2)+or- \sqrt{ (-2)^(2)+4(1)(-9) } }{2(1)}$
$x= (2+or- √(4+36) )/(2)$
$x= (2+or- √(40) )/(2)$
$x= (2+or-2 √(10) )/(2)$
$x=1+or- √(10)$
$√(10) =3.16$
1+3.16 = 4.16
1-3.16 = -2.16

3) $x^(2) -9x+5=0$
a=1
b=-9
c=5
$x= \frac{-(-9)+or- \sqrt{(-9)^(2)-4(1)(5) } }{2}$
$x= (9+or- √(81-20) )/(2)$
$x= (9+or- √(61) )/(2)$
$x= (9)/(2) +or- ( √(61) )/(2)$
$√(61) = 7.81$
$(7.81)/(2) =3.91$
$(9)/(2)=4.5$
4.5+3.91 = 8.41
4.5-3.91 = 0.59

Simplify the expression. -3/8 - -1/102/9

-19/40

-3/8

19/40

Answers

Answer: 19/40

Step-by-step explanation: first we need the values in the numerator, so we can multiply in X where you multiply the denominators with numerator of the other value in the equation finally we resolve simple equation between both numerator, so the numerator equations will be.

(-10) * (-3) = 30

(-8) * ( -1) = 8

then we get this values in the numerator

30 + 8 = 38

in the denominator we only need to multiply both values.

(-8) * (-10) = 80

after we divide each result between 2

numerator 38/2 = 19

denominator 80/2 = 40

after this, we can place the numerator and the denominator into the equation and we get the following result

19/40

Solve algebraically
x-4y=-10
x+y=5

Answers

Answer:

if x+y=5, then x=5-y

so x-4y=-10

5-y-4y=-10

5-5y=-10

-5y=-15

y=3

x=5-y

x=5-3

x=2

x=2; y=3

If Ryan walks 3/4 miles each 1/3 hour, how many miles will Ryan walk in one hour?this is urgent!!

Answers

Answer: He will walk 2 1/4 miles in an hour

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