solve the system of equations 2x+y+z=1 2x-y-3z=-3 x-2y-4z=-2

Answer:

x = 29.8

Step-by-step explanation:

x represents the unknown number

20.7 + x = 50.5

x + 20.7 - 20.7 = 50.5 - 20.7

x = 50.5 - 20.7

x = 29.8

Answer:

35

Step-by-step explanation:

x=3x-70

because corresponding angles are congruent

Solve the equation to find x.

Answer:

hey i would help you but i cant because my school computer blocked the image

Step-by-step explanation:

if you could tell me text wise i might be able to help you out :)

The answer is (-2,5.5)

Step-by-step explanation:

Hope this helps

Answer:

-30

Step-by-step explanation:

3*-10 = -30

The negative rules are simply:

negative*negative = positive

negative*negative*negative = negative

Hope I helped

Answer:

9.7

Step-by-step explanation:

The answer is 300 because 2 times 15 is 30 than you just add the zero

Answer:

$300

Step-by-step explanation:

i think you multiply 150 by 2 to get 300

Answer:

7.5

Step-by-step explanation:

The value of x = 7.5 when y = -30

The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.

Given that y varies directly with x, and y = -20 and x = 5,

To determine the value of x = 7.5 when y = -30

Direct variation equations can be written as:

y = kx where "k" is a constant.

Substitute the values of y = -20 and x = 5 in the direct variation equation and solve for k:

⇒ -20 = 5k

⇒ k = -20/5

⇒ k = -4

The direct variation equation :

⇒ y = -4x

Substitute the values of y = -30 in the above equation and solve for x:

⇒ -30 = -4x

⇒ 4x = 30

⇒ x = 30/4

⇒ x = 7.5

Thus, the value ofx = 7.5 when y = -30

Learn more about the equation here:

brainly.com/question/10413253

#SPJ2

Answer:

22 ft.

Step-by-step explanation:

First we can get the total change in elevation, which should be the final elevation minus the initial elevation:

(98ft)-(10ft)=88ft

Then, to get the change in 4 equal intervals, we can divide the total change in elevation by 4.

(88/4)ft=22ft

So during each of the four intervals, assuming they were four equal intervals, the diver descends 22ft.

Answer:

domain all real numbers

range all real numbers

the cost of his monthly cable is $40.50 when you plug in 4

Answer:

50

Step-by-step explanation:

Step 1:

40 + 10

Answer:

50

Hope This Helps :)

Answer:

I think Tony would be right, I THINK!!

Answer:

x + 5y -10 = 2x

or, 5y = 2x - x + 10

or, 5y = x + 10

or, y = (x + 10)/5

Angel nkl is congruent to what angle

Answer:

Angle NKL is congruent to angle XYZ.

Step-by-step explanation:

I took the test and it was right

Hope this helped

Answer:

Step-by-step explanation:

(4 + x)/2 = 6

4 + x = 12

x = 8

(3 + y)/2 = 5

3 + y = 10

y = 7

(8,7) for the endpoint C

Answer:

(0, - 6)

Step-by-step explanation:

The y- intercept is where the function crosses the y- axis.

This occurs when x = 0 , thus

From the table when x = 0, f(x) = - 6

The y- intercept is therefore (0, - 6 )

Answer:

(0, - 6)

Step-by-step explanation:

Answer:

13, 39

Step-by-step explanation:

H +J =52

H=3J

3J +J=52

4J=52

J=52 :4 =13 (Jane is 13

H =3 ×13 =39 (Harvey is 36

Answer:

54 Miles Per Hour

Step-by-step explanation:

162/3

Answer: d(distance) = [tex]\sqrt13\\[/tex]

Hope this help!

Step-by-step explanation:

To find the mean, or average, you add all of the numbers and divide the sum by how many there are.

In this case, you add 25,27,32,29, and 42 and then divide the sum by 5.

25+27=52+32=84+29=113+42=155.

Then divide.

155/5=31.

hope it helps!

Answer:

t=1

Step-by-step explanation:

7t-8t+4=5t-2

-1t+4=5t-2

-1t+6=5t

6=6t

1=t

Check

7t-8t+4=5t-2

7(1)-8(1)+4=5(1)-2

-1+4=5-2

3=3

please give brainlist

t=1/3

hope this helped

Answer:

KL= 63

Step-by-step explanation:

JK=7x+9 , JL=114 , KL=9x+9 ( if the points are on the same line and point J at the end point and K in the middle)

*J_______________________K___________________________L

JL=JK+KL

114=7x+9+9x+9

114-18=16 x

16x=98

x=98/16=6

KL= 9x+9

KL=9(6)+9

KL= 63

Answer:

16

Step-by-step explanation:

X = 16

Answer:

x = 75

Step-by-step explanation:

X/5=15

Multiply each side by 5

x/5 * 5 = 15*5

x = 75

Answer:

Step-by-step explanation:

15*5=75

therefore answer is x=75

Answer:

[tex]8i^{22}[/tex] - 1

Explanation:

It's actually quite easy to tell which simplifies to a real number without working out the problem.

[tex]i^{2}[/tex] = -1

Any imaginary number with an even exponent is simplified to a real number. If it has an odd exponent, it cannot be simplified to a real number.

Some tips for fully solving the expression:

If the exponent is divisible by 4, then don't change the sign of the coefficient. You're just multiplying it by 1 because [tex]i^{4}[/tex] = [tex](i^{2})^{2}[/tex] = [tex](-1)^{2}[/tex] = 1

If the exponent is divisible by 2, change the sign of the coefficient because you're multiplying it by -1.

Answer:

X = -4

Step-by-step explanation:

See image for explanation

Answer:

x=4

Step-by-step explanation:

x - 5 + 3x = -21

add 3x and x and add 5 to both sides of the equation

4x = -16

then divide both sides by 4

x = 4

ya answer is x = 4

Answer:

C. : Choosing a car that costs 10,000 instead of a car that costs 14,000 means that you'll have more money available for other purchases

Step-by-step explanation: