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3 years ago

A teacher wrote this experssion on the board (-6)(2)+(-8÷4) what is the vaule of this expression

Mathematics

1 answer:

VLD [36.1K]3 years ago

3 0

Answer:

-14

Step-by-step explanation:

(-12)+(-2)

You solve using Pemdas, doing the (-8/4) first, and then doing (-6)(2)

The answer is the two values added together.

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Which choice is equivalent to the expression below ? sqrt -12

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3 years ago

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A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h,

Vlad1618 [11]

Answer:

Reaches a maximum height of 235.00 feet in 3.75 seconds.

Step-by-step explanation:

The height of the boulder, h, in feet after t seconds is given by the function is given by :

$h=-16t^2+120t+10$ .....(1)

For maximum height, put $\dfrac{dh}{dt}=0$

i.e.

$\dfrac{d(-16t^2+120t+10)}{dt}=0\\\\-32t+120=0\\\\32t=120\\\\t=3.75\ s$

Put t = 3.75 in equation (1). So,

$h=-16(3.75)^2+120(3.75)+10\\\\h=235\ \text{feet}$

So, the boulder's maximum height is 235 feets and it takes 3.75 s to reach to its maximum height.

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3 years ago

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ipn [44]

Point Form:
(2, 4), (1, 1)

Equation Form:
x = 2, y = 4
x = 1, y = 1

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4 years ago

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Can someone please help me :) !!!!

Gwar [14]

Answer:

Step-by-step explanation:

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3 years ago

Questions:<br>1) 2x2 + 5x + 2 = 0

xz_007 [3.2K]

Answer:

x = -1/2 and -2

Step-by-step explanation:

Solve for <em>x</em>: Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Using the quadratic formula: Solve the equation for x by finding a, b, and c of the quadratic then applying the quadratic formula.

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3 years ago

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