Use the Echelon Method
1. Solve
x + 3y = 7
3x + 4y = 11

9514 1404 393

Answer:

  d  no

Step-by-step explanation:

The equation of direct variation is a linear (1st-degree) equation. This is a quadratic (2nd-degree) equation, so is not direct variation.

Answer:

difference is that at night temperature automatically increase so it's -6°F and at afternoon beacuse of sun temperature is high. and overall 12°F.

Step-by-step explanation:

Answer:

The second and third boxes. m=-10/4 & -5/2 & the last one

Step-by-step explanation:

We know the answer is negative so we need to add a larger number to get the 3/4 to the negatives. 3-10= -7, so -10/4 and -5/2 is equal to -10/4

Answer:

The second one m= -10/4, the third one m= -5/2, and the last one -5/4+m= -15/4

Step-by-step explanation:

You find m by solving -7/4 - 3/4 = m. Thats the second option -10/4.

When you simplify, you get -5/2, the third option.

Finally, -5/4+m= -15/4 is equal to -15/4 -(-5/4)=m. Subract and you get -10/4. That makes the original equation equal to the last option.

Answer: x = 115/2 and 119/6

You can simplify the answer.

Step-by-step explanation:

(2x + 5)(6x -1)= 120

120 = (2x +5) and (6x -1) = 120

120 - 5 = 2x and 6x = 120 - 1

115 = 2x and 6x = 119

115/2 = x and x = 119/6

Answer:

=>(2x+5)(6x-1)=120

=>2x(6x-1)+5(6x-1)

=>12x>2-2x+30x-5=120

=>12x>2+28x-5-120=0

=>12x>2+28x-125=0

Step-by-step explanation:

please make me brailliest

Answer: The lower trail is 0.45km longer then the upper trail.

Step-by-step explanation: So all you need to do is find the difference between the two lengths. To do that your just going to subtract the greater length by the smaller length. So in this case:

7.25-6.8=0.45

so the lower trail is 0.45km longer then the upper trail.

Answer:

4,000

Step-by-step explanation:

Answer:

4,000

Step-by-step explanation:

4 is in thousands place value; therefore, the digit 4 represents the number 4,000 in the number 84,230.

Hope this helped you out...have an amazing day! :)

Answer:

-21 degress f

in the morning hope this helped bestie!!

Answer:

x = 5

Step-by-step explanation:

The axis of symmetry is the vertex x coordinate

13)3302 (254

2600

________

702

702

________

× × × ×

Answer:

54

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

if x=4 and y=-3

4²-4(-3)/2

16+12/2

28/2

14

Answer:

Point G

Step-by-step explanation:

Interior is the inside of the geometric shape, which is Point G.

Point H is the exterior of DEF.

Answer:

Around 5.73. The exact answer is 18/pi. Why? The diameter is twice the radius (2r) The formula of the circumference if 2 pi R

if we divide 18, the circumference by pi, we get the diameter.

Step-by-step explanation:

Answer:

18/π

Step-by-step explanation:

Since 2 × π × r is the circumference of the circle,

2πr = 18

πr = 9

r = 9/π

Since the diameter is 2x the radius,

2r = d

2 × 9/π = d

18/π = d

Answer:

A

A is your answer

A is your correct answer

Answer:

not so sure but I guess that's the answer there

Answer:

D. 0.0000000654

Step-by-step explanation:

The exponent determines which way the decimal moves. If the exponent is positive the decimal moves to the right, and negative means it moves to the left.

Since the exponent, in this case, is -8, the decimal moves 8 places to the left.

6.539058 E -8 --> 0.00000006539058

This can be rounded up to 0.0000000654

Answer:

D

Step-by-step explanation:

6.539058 E -8 means 6.539058x10^-8

Which is equivalent to Option D when transformed into its normal form.

Answer:

yes

Step-by-step explanation:

it's irrational cuz it's negative

Answer:no

Step-by-step explanation:

74,820 < 103,115

······

Answer:

<

Step-by-step explanation:

Answer:

Even numbers are integers that have 2 as a factor; odd numbers are all the other integers. Prime numbers are integers that have only themselves and 1 as factors. Perfect numbers are integers whose factors add up to the number. The smallest perfect number is 6 and its factors, 1, 2 and 3 add up to 6.

Step-by-step explanation:

Answer:

-17 + 12x + 2x

Step-by-step explanation:

[tex] - 7 - y + 2x + 13y - 10[/tex]

[tex] - 7 - 10 = - (7 + 10) = - 17[/tex]

[tex] - 17 - y + 2x + 13y[/tex]

[tex] - y + 13y = - 1y + 13y = ( - 1 + 13)y = 12y[/tex]

[tex]\boxed{\green{= - 17 + 12y + 2x}}[/tex]

Answer:

26

Step-by-step explanation:

All you have to do is add up all the sides and lengths of the rectangle. 7+6+5+8=26

Answer:

People turn to alcohol when they desire to get relief from their anxiety.

Answer:

Start by writing an equation with a a variable (call it X) to represent the number Dan started with.

He started with X, added 5 more, then his dog took half or divide by 2. He then ended up with 32. Solve:

(X +5)/2 = 32 Multiply each side by 2

X+5 = 64 Subtract 5 from both sides

X = 59

Answer:

59

Step-by-step explanation:

Let the Dan's baseball be x

When 5 added

(x + 5)

Dog ate half

(x + 5)/2

(x + 5)/2 = 32

(x + 5) = 32(2)

x + 5 = 64

x = 64 - 5

x = 59

Answer:

Step-by-step explanation:

If a triangle has two legs of equal length

Then the bisector of the angle between those legs is perpendicular to the third side.

Answer:

17

Step-by-step explanation:

If L and M are parallel then the angles will add up to 180 (a straight line), so:

6x+8+4x+2=180

10x+10=180

10x=170

x=17

Answer:

2x - 4 = 14

When x = 9

Step-by-step explanation:

Use PEMDAS order of operations to solve:

2(9) - 4

= 18 - 4

= 14

Answer:

13.375 miles

Step-by-step explanation:

Hope this helps :)