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3 years ago

Need help with this.

Mathematics

1 answer:

Debora [2.8K]3 years ago

4 0

Answer:

?= 105

Step-by-step explanation:

I saw the straight angle the two triangles formed, so I immediately knew that that is 180 degrees. I took 180-75 to get 105

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On a coordinate map of the school cultural festival, the information booth is located at (4,5). The ticket booth is located 4 un

monitta

Answer:

Step-by-step explanation:

6 0

3 years ago

Complete the equation of the line through ( 4 , -8 ) and ( 8 , 5 )

irinina [24]

Answer:

Therefore the equation of the line through ( 4 , -8 ) and ( 8 , 5 ) is

13x - 4y = 84.

Step-by-step explanation:

Given:

Let,

point A( x₁ , y₁) ≡ ( 4 ,-8)

point B( x₂ , y₂) ≡ (8 , 5)

To Find:

Equation of Line AB =?

Solution:

Equation of a line passing through Two points A( x₁ , y₁) and B( x₂ , y₂)is given by the formula

$(y - y_{1} )=(\frac{y_{2}-y_{1} }{x_{2}-x_{1} })\times(x-x_{1}) \\$

Substituting the given values in a above equation we get

$(y-(-8))=(\frac{5-(8)}{8-4})\times (x-4)\\ \\(y+8)=\frac{13}{4}(x-4)\\\\4(y+8)=13(x-4)\\4y+32=13x-52\\13x-4y=84...............\textrm{which is the required equation of the line AB}$

Therefore the equation of the line through ( 4 , -8 ) and ( 8 , 5 ) is

13x - 4y = 84.

4 0

3 years ago

Add. 4x−3x2−2x+−3x+3x2−2x

Gemiola [76]

Answer:

Step-by-step explanation:

4x+3x=7x

-3x-2x-3x-2x=-10x

2+2=4

-3x & 4

7 0

3 years ago

Read 2 more answers

What is the product of (3x^-4)(2y^-4)?

kap26 [50]

Answer:

6xy^-4

Step-by-step explanation:

we use the property

a^1×b^1=(ab)^1

4 0

3 years ago

X^2+14x-15=0 solve by completing square<br>

Softa [21]

Answer:

${x}^{2} + 14x - 15 = 0 \\ {x}^{2} - x + 15x -15 = 0 \\ x(x - 1) + 15(x - 1) = 0 \\ (x - 1)(x + 15) = 0 \\ \boxed{x = 1} \\ \boxed{x = - 15}$

<h3><u>x=1 and x=</u><u>-</u><u>15</u> is the right answer.</h3>

7 0

3 years ago

Need help with this.​

Need help with this.