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alukav5142 [94]

3 years ago

7

Y is what percent of (w+y-x)

1 answer:

vova2212 [387]3 years ago

4 0

W equals 5 and yequals 6 what is the answer of y that's the total of W Y

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The sum of the roots of 2x squared + 8x -3=0 is?

Helen [10]

According to Vieta's formula, if $x_1,x_2$ are solutions of quadratic equation $ax^2+bx+c=0$ , then:

$\displaystyle x_1+x_2=- \frac{b}{a}$

In our case:

$\displaystyle x_1+x_2=- \frac{8}{2} =-4$

4 0

3 years ago

BRAINLIESTTTTTTTTTTTT!! :)

skad [1K]

Your answer here would be letter A because for each year it is multiplied by 5 and so year 6 was 31,250 and 31,250 * 5 is 156,250

Have A Good Day :)

3 0

4 years ago

Read 2 more answers

Tony rounded each of the numbers 1210 and 1148 to the nearest hundred. Which choice correctly compares the rounded numbers

lara31 [8.8K]

1210 rounded to the nearest hundred is 1200
1148 rounded to the nearest hundred is 1100

7 0

4 years ago

Read 2 more answers

Ava wants to draw a parallelogram on the coordinate plane. She

wolverine [178]

Answer:

$k =(2,1)$

$JK = 2$

Step-by-step explanation:

Given

$J = (0,1)$ ---- $(x_1,y_1)$

$H = (1,-2)$ --- $(x_2,y_2)$

$I = (3,-2)$ --- $(x_3,y_3)$

See attachment for grid

Solving (a): The coordinates of K

The parallelogram has the following diagonals: IJ and HK

Diagonals bisect one another. So:

Midpoint of IJ = Midpoint of HK

This gives:

$\frac{1}{2}(I + J) = \frac{1}{2}(H+K)$

$\frac{1}{2}(x_3+x_1,y_3+y_1) = \frac{1}{2}(x_2+x,y_2+y)$

$\frac{1}{2}(3+0,-2+1) = \frac{1}{2}(1+x,-2+y)$

$\frac{1}{2}(3,-1) = \frac{1}{2}(1+x,-2+y)$

Multiply through by 2

$(3,-1) = (1+x,-2+y)$

By comparison:

$1 + x = 3$

$-2 + y = -1$

Solve for x and y

$x = 3 - 1 =2$

$y = -1 +2 = 1$

So, the coordinates of k is:

$k =(2,1)$

The length of JK is calculated using distance (d) formula

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

$J = (0,1)$ ---- $(x_1,y_1)$

$k =(2,1)$ ---- $(x_2,y_2)$

So:

$d = \sqrt{(0 - 2)^2 + (1 - 1)^2$

$d = \sqrt{(- 2)^2 + (0)^2$

$d = \sqrt{4 + 0$

$d = \sqrt{4$

$d = 2$

Hence:

$JK = 2$

8 0

3 years ago

Add (6х2 – 3x) + (5х – 7).

AleksAgata [21]

Answer:

B. 6x^2+2x-7

Step-by-step explanation:

Ok so

(6x^2-3x) + (5x-7)

Then add the like terms

Theres no like terms for 6x^2

Add -3x + 5x which = 2x

Theres also no like terms for -7

SO

Your final answer is 6x^2 + 2x -7

Hope I helped! Have a good day :)

4 0

3 years ago

Read 2 more answers