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1 year ago

Helllllppppp I will give u BRAAAIINLIAAST

Mathematics

1 answer:

scoray [572]1 year ago

7 0

Step-by-step explanation:

fro the figure

2z = 68

z = 68/2

z =34

also

v + 68 = 180

v = 180 - 68

v = 112

also

v = x

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Julie multiplies 6.27 by 7 and claims the product is 438.9. Explain without multiplying how you know Julie’s answer is not corre

Karolina [17]

Answer:

SHe put the decimal point in the wrong spot, it's suppose to be 43.89

Step-by-step explanation:

4 0

2 years ago

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Help please I need 5 points total. i need 2 to left of vertex. i need vertex. i need 2 to right of vertex. Please, quickly, I am

zlopas [31]

We are given with a quadratic equation which represents a Parabola , we need to find the vertex of the parabola , But let's recall that , For any quadratic equation of the form ax² + bx + c = 0 , the vertex of the parabola is given by ;

${\quad \qquad \boxed{\bf{Vertex = \left(\dfrac{-b}{2a},\dfrac{-D}{4a}\right)}}}$

Where , D = b² - 4ac (Discriminant)

Now , On comparing the given equation with ax² + bx + c , we have

⇢⇢⇢ a = 1 , b = - 10 , c = 27

Now , Calculating D ;

${:\implies \quad \sf D=(-10)^{2}-4\times 1\times 27}$

${:\implies \quad \sf D=100-108}$

${:\implies \quad \bf \therefore \quad D=-8}$

Now , Calculating the vertex ;

${:\implies \quad \sf Vertex =\bigg\{\dfrac{-(-10)}{2\times 1},\dfrac{-(-8)}{4\times 1}\bigg\}}$

${:\implies \quad \sf Vertex = \left(\dfrac{10}{2},\dfrac{8}{2}\right)}$

${:\implies \quad \bf \therefore \quad Vertex = (5,2)}$

Hence , The vertex of the parabola is at (5,2)

Note :- As the Discriminant < 0 . So , the equation will have imaginary roots .

Refer to the attachment for the graph as well .

5 0

2 years ago

He lesson. If the first step in the solution of the equation -x + 6 = 5 - 3x is "subtract 5," then what should the next step be?

Xelga [282]

Answer:

add x

Step-by-step explanation:

The operation "subtract 5" has eliminated the constant from the right side of the equation, so the next step would be to eliminate the variable from the left side. You do that by adding the opposite of the variable term.

The opposite of the term -x is x, so we "add x" as the next step.

This makes the solution look like ...

-x +6 = 5 -3x

-x +1 = -3x . . . . . . subtract 5

1 = -2x . . . . . . . . . add x

-1/2 = x . . . . . . . . .divide by -2

_____

Comment on this solution

My preference is always to add the opposite of the variable term with the smallest coefficient. Here, that term is -3x, so I would add 3x as a first step. This leaves the only x-term with a positive coefficient, so can reduce errors in the solution.

8 0

3 years ago

I need some help please

Andreas93 [3]

Answer:

Step-by-step explanation:

-5,-13

I hope this helps

3 0

2 years ago

What is the y-intercept of the line that passes through (-6,2) and (4,-2) ?

LenKa [72]

Answer:

Step-by-step explanation:

Slope (m) =

ΔY

ΔX

-2

= -0.4

θ =

arctan( ΔY ) + 360°

ΔX

= 338.19859051365°

ΔX = 4 – -6 = 10

ΔY = -2 – 2 = -4

Distance (d) = √ΔX2 + ΔY2 = √116 = 10.770329614269

Equation of the line:

y = -0.4x – 0.4

y =

- 2 x

– 2

When x=0, y = -0.4

When y=0, x = -1

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2 years ago

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