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2 years ago

What is the answer for x²+9x-10

Mathematics

2 answers:

Alexxandr [17]2 years ago

8 0

(x-1) (x + 10)

Step-by-step explanation:

I think it's this but I'm not sure if I did it right

masha68 [24]2 years ago

3 0

(X-1) (X+10) it should be correct

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Evaluate and solve <br> f(3)+f(0) when f (x) = 10x – 5

Monica [59]

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$f(x) = 10x - 5$

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$f(3) = 10(3) - 5$

$f(3) = 30 - 5$

$f(3) = 25$

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$f(0) = 10(0) - 5$

$f(0) = - 5$

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$f(3) + f(0) = 25 - 5$

$f(3) + f(0) = 20$

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6 0

2 years ago

Which expression is equivalent to 18x + 45?

ivolga24 [154]

B is the answer because 9 times 2x is 18x and 9 times 5 is 45.

4 0

2 years ago

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A hot-air balloon is 160 ftabove the ground when a motorcycle (traveling in a straight line on a horizontal road) passes dire

Charra [1.4K]

Answer:

73.77 ft/s

Step-by-step explanation:

Let's imagine this situation as a right triangle where the distance between the two points is the hypotenuse.

-Applying Pythagoras theorem:

$z^2=x^2+y^2\\\\z=\sqrt{x^2+y^2}\\\\x=dx*t+x_i, x_i=0\\\\y=dy*t+y_i\\\\y_i=160\ ft$

#Take the derivative of the first equation and solve for $dz$ :

$d(z^2=x^2+y^2)\\\\2z*dz=2x*dx+2y*dy\\\\dz=\frac{x*dx+y*dy}{z}\\\\dz=\frac{x*dx+y*dy}{\sqrt{x^2+y^2}}\\\\\\dz=\frac{dx^2*t+dy(dy*t+160)}{\sqrt{(dx*t)^2+(dy*t)}}$

#We then substitute the values given in the question to solve for $dz$ :

$dz=\frac{7*66^2+14(14*7+160)}{\sqrt{(66*7)^2+7*14+160}}\\\\=73.78$

Hence, the rate of change of the distance between the motorcycle and the balloon 7 seconds later is 73.77 ft/s

3 0

3 years ago

The point g (2,2) is translated 3units to the right and 4units up what are the coordinates of this resulting point, g?

Svetlanka [38]

Answer:

(5,6)

Step-by-step explanation:

<em>Generally, is the coordinate (x,y) is translated right by a units and up by b units, the resulting coordinate wil be;</em>

g(X, Y) = (x+a, y+b)

To the right is along the positive x axis while up is along the positive y axis

Given a = 3 and b = 4

g(X,Y) = (2 + 3, 2 + 4)

g(X, Y) = (5, 6)

Hence the resulting coordinate of g is (5,6)

7 0

2 years ago

Can someone help me, please?

weeeeeb [17]

Answer:

what does the picture say?

Step-by-step explanation:

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2 years ago

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