Which two lines are perpendicular?

A
2x−6y=−12

and

3x−y=−5

B
6x−15y=−60

and

2x−5y=10

C
2x+5y=7

and

−6x−15y=−21

D
y=2

and

2x−3y=10

E
2x−3y=12

and

3x+2y=10

Answer:

X=-3 y=-8

Step-by-step explanation:

[tex]5x - 6y = 33 \\ y = - 14 - 2x \\ [/tex]

Put the second one in first

[tex]5x - 6( - 14 - 2x) = 33 \\ 5x + 84 + 12x = 33 \\ 17x = - 51 \\ x = - 3[/tex]

[tex]y = - 14 - 2 \times ( - 3) \\ y = - 8[/tex]

Answer:

because the answer of 0.3 times 0.9 is 0.27

Step-by-step explanation:

Answer: 0.27

Step-by-step explanation: When you multiply 0.3 x 0.9 you get 0.27

Answer:

[tex]f[/tex] = 78

[tex]g[/tex] = 3.5

Step-by-step explanation:

First we need to find [tex]f[/tex].

We can use the equation [tex]72 + (f + 30) = 180[/tex] to solve for [tex]f[/tex].

We can then change that equation to [tex]72 + f + 30 = 180[/tex], since the Commutative Property of Addition says that you can have any addition in any order.

Now, we can solve the equation.

[tex]102 + f = 180\\(102 - 102) + f = 180 - 102\\f = 78[/tex]

Now that we solved [tex]f[/tex], we can now solve for [tex]g[/tex].

Since 25 equals [tex]8g -3[/tex], we can solve the equation [tex]8g - 3 = 25[/tex].

Here is how you solve it:

[tex]8g - 3 = 25\\8g + (-3 + 3) = 25 + 3\\8g = 28\\g = \frac{28}{8}[/tex]

Since [tex]\frac{28}{8}[/tex] equals 3.5, which is the simplest form, that is the answer.

Hope this helps, and please mark me brainliest! :)

Answer:

-20.59=40

+20.59  +20.59

$60.69

hope this helps

Answer: She would need to deposit $60.59

Step-by-step explanation:

She has: -20.59

She needs: 40

-20.59 + x = 40

+ 20.59 on each side

x = 60.59

Answer:

Kindly check explanation

Step-by-step explanation:

Given that :

Initial cup of salt = 3/4 cups ; divided into small jars

Fraction of salt in small jars = 1/10 cup

Fraction left over = 1/7 cup

Number of jars filled?

The fraction divided into the jars :

Initial amount - left over

3/4 - 1/7

(21 - 4) / 28

17 / 28

Fraction of salt per jar = 1/10

Number of jars filled :

Total fraction divided into jars / fraction of salt per jar :

(17 / 28) ÷ (1 /10)

(17 / 28) * (10 / 1)

170 / 28

= 6.0714

= 6 jars

Answer:

27 is your answer

Step-by-step explanation:

if 2;3 is your ratio and u have 18 peppermint gum then divide 18 by 2 and u get 9 then u multiply 9 by 3 and u get 27

The total number of spearmint gums will be 27

Given is that a container has peppermint gum and spearmint gum. There are 18 pieces of peppermint gum in the container and the ratio of peppermint gum to spearmint gum is 2 : 3.

Let the number of spearmint gum be {x}. So, we can write -

2/3 = 18/x

{x} = (18 x 3)/2

{x} = 27

Therefore, the total number of spearmint gums will be 27.

To solve more questions on algebraic expressions, visit the link below -

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Answer:

Step-by-step explanation:

We are given the expression

[tex]y = 7.2x[/tex]------- expressing the relationship between y and x

one way to know if the expression shows a direct proportionality is to answer the question, does y increase if x increases?

let us plug two values for x and see what happens to y

for x=3

y=7.2(3)

y=21.6

for x=4

y=7.2(4)

y=28.8

for x= 2

y=7.2(2)

y=14.4

From our observations when  x increases the value of y increases and vice versa, hence there exist a direct proportionality

Answer:

Yes the answer is 12.

Step-by-step explanation:

6c + 11 = 2c + 59

6c - 2c = 59 - 11

4c = 48

dividing both sides by 4:

c = 12.

Answer:

∠ Y = 34°

Step-by-step explanation:

Since XY = ZY then the triangle is isosceles and the base angles are congruent, thus

∠ X = ∠ Y , that is

6x - 23 = 4x + 9 ( subtract 4x from both sides )

2x - 23 = 9 ( add 23 to both sides )

2x = 32 ( divide both sides by 2 )

x = 16

Thus

∠ Z = 4x + 9 = 4(16) + 9 = 64 + 9 = 73° = ∠ X

Hence

vertex angle Y = 180° - (73 + 73)° = 180° - 146° = 34°

Answer:

If you find the middle of any side of a triangle, you have found its midpoint. From that midpoint, you can construct a line segment to the opposite interior angle. That constructed line from the midpoint of a side to the opposite interior angle is a median.

Step-by-step explanation:

Answer:

its -3

Step-by-step explanation:

my explanation is in your comments whoops

Answer:

Step-by-step explanation:

to find out the coresponding sides and angles draw 2 triangles that are the same and label them in same ORDER (I did counterclock wise) will help you see better the parts

  L.                  T

  Δ                  Δ

J.     K.         C.    O

JK≅ CO, JL≅CT, KL≅OT

∠J≅∠C, ∠L≅∠T, ∠K≅∠O

ΔTRI≅ΔAGN because corsponding parts are congruent

∠I≅∠N because are coresonding angles

Answer:

i cant do the graph rn but the slope would be y=4x-2

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

3x = -38 + 5x

3x + -5x = -38 + 5x + 5x

3x + -5x = -2x

-2x = -38 + 5x + -5x

5x + 5x =0

-2x = -38 + 0

-2x = -38

-2x / -12 = 38 / -2

x=19

Answer:

80 cups

Hope that helps! :)

Answer:

Therefore the answer is B)

Step-by-step explanation:

so we have to find the inverse function.

g(x) = -1/(x-2) +3

y = -1/(x-2) +3

x = -1/(y-2)+3

x - 3 = -1/(y-2)

(x - 3)^-1 = -(y-2)^-1*-1

1/(x-3) = -y+2

1/(x-3) -2 = -y

-1(-y) = -1[1/(x-3) -2]

y = -1/(x-3) + 2

or y = 1/(-x+3) + 2

Matches B)

Answer:

B, C, and D

Step-by-step explanation:

B

C

D

Answer:

IT B, C, and D

Step-by-step explanation:

B, C, and D are the right answers. Mark me brainliest please.

Answer:

k=0.5

Step-by-step explanation:

Answer:

D+0.21

Step-by-step explanation:

Answer:

7/5

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

hbhbkbbhhkbhbhkjk

Answer:

The dvd rentals cost more than the viddeo game rentals

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

9514 1404 393

Answer:

  process: substitute the given point values into the 2-point form of the equation for a line

Step-by-step explanation:

There are more than a half-dozen different forms of the equation for a line. They are useful for different purposes. One of them is the "two-point form".

Using x as the independent variable, and y as the dependent variable, the equation can be written as ...

  y -y1 = (y2 -y1)/(x2 -x1)/(x -x1)

where (x1, y1) and (x2, y2) are the two points.

__

Here, your two points are ...

  (t, s) = (10, 337) and (30, 349)

Using s in place of y, and t in place of x, these two points go into the formula like this:

  s -337 = (349 -337)/(30 -10)(t -10)

Simplifying the fraction, this is ...

  s -337 = (12/20)(t -10)

And writing it as a decimal, we get ...

  s -337 = 0.6(t -10)

_____

Additional comments

Adding y1 to both sides of the above form gives you ...

  y = (y2 -y1)/(x2 -x1)/(x -x1) +y1

This is the form I usually prefer to use, because it can lead directly to slope-intercept form. For this problem, the form shown above gets you to the answer you're looking for.

__

This "two-point form" is an expansion of the "point-slope form", which is ...

  y - k = m(x -h) . . . . . . . line with slope m through point (h, k)

where the equation for slope is ...

  m = (y2 -y1)/(x2 -x1)

and (x1, y1) is used instead of (h, k).

Answer:

The actual linear equation is s= 0.6t + 331 which can be rearranged to make s-337 = 0.6( t-10 ).

Step-by-step explanation:

Any linear equation has the formula y=Mx + c , where x is the independent variable , y is the dependent variable , m is the slope of the line and c is the y-intercept .

here y is replaced by “s” which stands for speed of sound and x is replaced by “t” which stands for temperature.

To find the slope , we divide gain  of “s” by gain of “t “

i.e. [tex]m= \frac{349-337}{30-10}= \frac{12}{20} = 3/5[/tex]

So the slope of the equation is 3/5 Or 0.6

lets plug s=337 and t= 10 into the equation s= 0.6t+ c

[tex]337= \frac{3}{5} (10) + c\\337 = 6 + c\\C= 331\\Hence the equation becomes s= 0.6t+ 331 \\Rearranging the equation , s-331 = 0.6t \\ subtracting 6 from both sides, s-331-6 = 0.6t-6\\S-337 = 0.6 ( t- 10 ) , which is given in your book.\\\\[/tex]

The last line is s-337 = 0.6t - 6 = 0.6(t-10 ) , which is given in your book.

Hope it helps

Answer:

I put  7/8 - 1/4 in a calculator and got 5/8

Step-by-step explanation:

Answer: the answer is d :)

The equation to represent the total cost of printing the calendars is y=500+2.50x.

The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept.

The standard form of the slope intercept form is y=mx+c.

1) Given that, the cost of printing is $500, plus $2.50 per calendar.

Let the number of calendars be x and let the total cost be y.

So, the equation is y=500+2.50x

2) Each calendar will sell for $5.00 each.

The total income, y, for selling x calendars.

So, the total income is y=5.00x

Cameron estimates that the math class will sell 200 calendars.

So, the total cost = 5.00×200

= $1000

Now, y=500+2.50x

Substitute x=200 in y=500+2.50x, we get

y=500+2.50×200

y=1000

Hence, option D is the correct answer.

Therefore, the equation to represent the total cost of printing the calendars is y=500+2.50x.

To learn more about the slope intercept form visit:

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Answer:

-6y+15

is the answer yeeeeeeee

Answer:

39

Step-by-step explanation:

- a^2 + b^2 = c^2 (hypotenuse)

- (80)^2 + b^2 = (89)^2

- rearrange to get

[tex]\sqrt{(89)^2-(80)^2} = b\\b= 39[/tex]