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1 year ago

14

HELP ME PLEASE!!!

2 answers:

bulgar [2K]1 year ago

7 0

Answer:11

Explanation: find the hypotenuse of the 1st triangle a^2 + b^2 = c^2 -> 9*9 + 5*5 = c^2
Which is 81+25 = c^2 -> 106 = c^2 now square root c = 10.3

Now you have the hypotenuse of the triangle on the left notice that the hypotenuse we just solved for is actually a leg for the triangle on the right. Now you can use the hypotenuse formula for x.

10.3^2 + 4^2 = x^2 -> 106.09 + 16 = x^2
Next, 122.09 = x^2 now we need to square root to isolate the square (2). x = 11.04 when rounded the closest radical is you answer x=11

devlian [24]1 year ago

6 0

Answer:

Step-by-step explanation:

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lakkis [162]

Answer:

D: (5 * 3)^3

D: 125 x 27

Step-by-step explanation:

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1 year ago

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The midpoint of a sègment is (6,-4) and one endpoint is (13,-2). Find the coordinates of the other endpoint.

gizmo_the_mogwai [7]

let other one be (x,y)

We know midpoint formula

$\boxed{\sf (x,y)=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)}$

$\\ \sf\longmapsto (6,-4)=\left(\dfrac{13+x}{2},\dfrac{-2+y}{2}\right)$

$\\ \sf\longmapsto \dfrac{13+x}{2}=6$

$\\ \sf\longmapsto 13+x=12$

$\\ \sf\longmapsto x=12-13$

$\\ \sf\longmapsto x=-1$

And

$\\ \sf\longmapsto \dfrac{-2+y}{2}=-4$

$\\ \sf\longmapsto -2+y=-8$

$\\ \sf\longmapsto y=-8+2$

$\\ \sf\longmapsto y=-6$

3 0

2 years ago

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What percent of 30 is 16.5

Lynna [10]

Answer:

Its 55

Step-by-step explanation:

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5 0

2 years ago

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20 POINTS !!!!!!!!!

mezya [45]

Answer:

x = x = 9 ± $\sqrt{13}$ or x ≈ 12.61 or x ≈ 5.39

Step-by-step explanation:

x² - 18x + 68 Solve by completing the square.

x² - 18x = - 68

Now complete the square and add that number to both sides of the equation.

1/2 (of the coefficient of the x term)² = (1/2 · -18)² = 81 .

x² - 18x + 81 = -68 + 81

(x - 9) (x - 9) = 13 Now find the square root of both sides

$\sqrt{(x - 9)(x - 9)}$ = $\sqrt{13}$ Solve

x - 9 = ± $\sqrt{13}$ Solve for x

x = 9 ± $\sqrt{13}$

x = 9 + $\sqrt{13}$ or x = 9 - $\sqrt{13}$

x ≈ 12.61 or x ≈ x 5.39

6 0

2 years ago

0.35x4<br> please help me

WITCHER [35]

Answer:

0.35*4=1.40

Step-by-step explanation:

Think of doing 35*4 but dividing the result by 100, or 2 decimal places to the left:

35*4 = 35*2*2 = 70*2 = 140

140/100 = 1.40

So, 0.35*4=1.40

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1 year ago

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