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3 years ago

Solve each equation. X – 10 = 4 Math

Mathematics

2 answers:

garik1379 [7]3 years ago

7 0

Answer:

x=14

Step-by-step explanation:

suter [353]3 years ago

6 0

Answer:

x=14

Step-by-step explanation:

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Enter the phrase as an algebraic expression.

zysi [14]

Answer:

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3 years ago

zlopas [31]

The answer would be C. 5(5) + 2(2) = 29
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3 years ago

A 10 foot ladder is leaning against a wall. Call x the distance from the top of the ladder to the ground, and call y the distanc

liq [111]

$-5.3\:\text{ft/s}$

Step-by-step explanation:

We start by applying the Pythagorean theorem to the ladder, with its length L as the hypotenuse:

$L^2 = 100\:\text{ft}^2 = x^2 + y^2$

where x is the vertical distance from the top of the ladder to the ground and y is the horizontal distance from the bottom of the ladder to the wall. Taking the derivative of the above expression with respect to time, we get

$0 = 2x\dfrac{dx}{dt} + 2y\dfrac{dy}{dt}$

Solving for dx/dt, we get

$\dfrac{dx}{dt} = -\left(\dfrac{y}{x}\right)\dfrac{dy}{dt} = -\left(\dfrac{\sqrt{L^2 - x^2}}{x}\right)\dfrac{dy}{dt}$

We know that

$\dfrac{dy}{dt} = 4\:\text{ft/s}$

when x = 6 ft. So the rate at which the top of the ladder is going down is

$\dfrac{dx}{dt} = -\left(\dfrac{\sqrt{100\:\text{ft}^2 - (6\:\text{ft})^2}}{6\:\text{ft}}\right)(4\:\text{ft/s})$

$\:\:\:\:\:\:\:= -5.3\:\text{ft/s}$

The negative sign means that the distance x is decreasing as y is increasing.

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3 years ago

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algol [13]

F..k the hell you don't know

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3 years ago

Sand and gravel are mixed in the ratio 5:3

IrinaK [193]

Answer:

a) 450 gravel b)1250 sand

Step-by-step explanation:

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3 years ago