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Nikitich [7]
3 years ago
11

Pls help me I’m stuck

Mathematics
2 answers:
Korvikt [17]3 years ago
3 0
90 + 49 = 139

180 - 139 = 41

x = 41
svet-max [94.6K]3 years ago
3 0

\huge\boxed{x=41^{\circ}}

The angles of a triangle always add up to 180^{\circ}.

We know two of the angles — a right angle, which is 90^{\circ}, and a 49^{\circ} angle.

Write an equation.

90+49+x=180

Combine like terms.

139+x=180

Subtract 139 from both sides.

x=\boxed{41}

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Solve for y. y - 4 = -3(x - 3)​
Doss [256]

Answer:

y=-3x+13

Step-by-step explanation:

y- 4 = -3(x - 3)​

y-4=-3x+9

y=-3x+13

6 0
3 years ago
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Find the length of the chord made by 3x2 - y2 = 3 and y + x – 5 = 0.
MArishka [77]

Answer:

The correct answer is "9√2 units".

Step-by-step explanation:

The given equations are:

⇒ 3x^2-y^2=3...(equation 1)

⇒ y+x-5=0...(equation 2)

According to the 2nd equation, we get

⇒ y+x-5=0

⇒              y=5-x

On substituting the value of "y" in the 1st equation, we get

⇒  3x^2-y^2=3

     3x^2-(5-x)^2=3

     3x^2-(25+x^2-10x)=3

     2x^2+10x-28=0

On taking common, we get

     x^2+5x-14=0

On applying factorization, we get

     x^2+7x-2x-14=0

   x(x+7)-2(x+7)=0

           (x+7)(x-2)=0

                        x+7=0

                              x=-7

or,

                         x-2=0

                                x=2

Now,

The points are:

(-7, 12) = (x₁, y₁)

(2, 3) = (x₂, y₂)

By using the distance formula, the length of chord will be:

= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

On substituting the values in the above formula, we get

= \sqrt{(2-(-7))^2+(3-12)^2}

= \sqrt{(9)^2+(-9)^2}

= \sqrt{81+81}

= 9 \sqrt{2} units

8 0
3 years ago
Nolan's car used 2 gallons to travel 50 miles. How far can he travel on 3 gallons?
ElenaW [278]

Answer:

On 3 gallons, he could travel 75 miles

Step-by-step explanation:

50 / 2 = 25 miles per gallon

25 * 3 = 75miles

5 0
3 years ago
What is the coefficients of x² in (2-3x) (x²-5)​
aniked [119]

Answer:

+2

Step-by-step explanation:

=> (2-3x)(x^2-5)

=> (2x^2-10-3x^3+15x)

<em>Arranging it in descending order</em>

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<u><em>So, the coefficient of x² in this expression is +2</em></u>

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3 years ago
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Andreyy89

2 \sqrt{x + 9}

8 0
3 years ago
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