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ZanzabumX [31]
4 years ago
10

Can you Please help me?

Mathematics
1 answer:
Alenkasestr [34]4 years ago
8 0

Answer:

131 and 49

Step-by-step explanation:

Supplementary angle means 180° when all angles are added together.

First angle: (x + 82)

Second angle: x

(x + 82) + x = 180

2x + 82 = 180

2x = 98

x = 49

First angle: 49 + 82 = 131°

Second angle: 49°

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Find the intercepts of 2x-y=-4
-Dominant- [34]

Answer:

Y intercept: y=2x+4

And x intercept: x=1/2y-2

Step-by-step explanation:

7 0
3 years ago
Sal has 3 of a sheet of poster board. Four friends are sharing the sheet equally. What fraction of the original sheet does each
Galina-37 [17]

Answer:

Step-by-step explanation:

3 sheets are shared between four friends.

Each friends will get = 3 ÷ 4

                                 = \frac{3}{4}

6 0
3 years ago
Find the equation of the tangent of x^2- xy + y^2 =7 at (-1, 2)
Citrus2011 [14]

Answer:

<u>It</u><u> </u><u>is</u><u> </u><u>3</u><u>y</u><u> </u><u>=</u><u> </u><u>4</u><u>x</u><u> </u><u>+</u><u> </u><u>1</u><u>0</u>

Step-by-step explanation:

Let's first get the slope of the curve.

[ slope is the derivative of the equation ]

{x}^{2}  - xy +  {y}^{2}  = 7

introduce dy/dx :

\frac{d}{dx} ( {x}^{2}  - xy +  {y}^{2} ) =  \frac{d}{dx} (7) \\  \\ 2x - (y +  \frac{dy}{dx} ) + 2y \frac{dy}{dx}  = 0

make dy/dx the subject:

2x - y -  \frac{dy}{dx}  + 2y \frac{dy}{dx}  = 0 \\  \\ 2y \frac{dy}{dx}  -  \frac{dy}{dx}  = y - 2x \\  \\  \frac{dy}{dx} (2y - 1) = y - 2x \\  \\  \frac{dy}{dx}  =  \frac{y - 2x}{2y - 1}

At point (-1, 2):

\frac{dy}{dx}  =  \frac{2 - 2( - 1)}{2(2) - 1}  \\  \\ slope =  \frac{4}{3}

but a tangent has the same slope as the curve:

y = mx + c

m is the slope

c is the y-intercept

At (-1, 2):

2 = ( - 1 \times  \frac{4}{3} ) + c \\  \\ c = 2 +  \frac{4}{3}  \\  \\ c =  \frac{10}{3}

equation:

y =  \frac{4}{3} x +  \frac{10}{3}  \\  \\ { \boxed{3y = 4x + 10}}

8 0
3 years ago
Read 2 more answers
Mike can plow a field in 12 hours and his brother Phil can plow it in 15 hours. How long will it take them to plow it if they us
Korvikt [17]

Answer:

6.66 hours, that is, 6 hours and 40 minutes.

Step-by-step explanation:

If Mike can plow a field in 12 hours, we plows 1/12 of the field each hour.

If Phil can plow a field in 15 hours, we plows 1/15 of the field each hour.

So if they are working together, they can plow (1/12) + (1/15) of the field each hour, that is:

(1/12) + (1/15) = (5 + 4) / 60 = 9 / 60 = 3 / 20 = 1 / 6.66

So if they work together, they can plow the field in 6.66 hours, that is, 6 hours and 40 minutes.

5 0
3 years ago
Help please, w-5-4= -8-6w+8w?​
balandron [24]

Answer:

w = -1

Step-by-step explanation:

  • w-5-4= -8-6w+8w                      ⇒ simplify
  • w - 9 = - 8 + 2w                          ⇒ add 9 - 2w to both sides
  • w - 2w = - 8 + 9                          ⇒ simplify
  • -w = 1                                           ⇒ multiply both sides by -1
  • w = -1                                           ⇒ answer
4 0
3 years ago
Read 2 more answers
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