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3 years ago

Just do part a how do I solve it?

Mathematics

1 answer:

VikaD [51]3 years ago

5 0

Answer: -6 is greater than the left side. So the answer will be less than -6

Step-by-step explanation: for example. The answer could be -7 or -8, (those arent calculated answers)

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Only answer if you are 100% positive <br><br> Simplify these expressions

raketka [301]

(13x+10)/(2x^2-5x-25)

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4 years ago

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at

vitfil [10]

Complete question

A 29-meter ladder is sliding down a vertical wall so the distance between the top of the ladder and the ground is decreasing at 7 meters per minute. At a certain instant, the bottom of the ladder is 21 meters from the wall.

What is the rate of change of the distance between the bottom of the ladder and the wall at that instant(in meters per minute)

Answer:

$\frac{dx}{dt}=11.94m/min$

Step-by-step explanation:

From the question we are told that

Slant height $z=29m$

Change in Vertical height $\triangle y=7m/s$

Horizontal length $x=21$

Generally in finding the distance form the top to the bottom of the wall it is mathematically given by

$x^2+y^2=z^2$

$21^2+y^2=29^2$

$y^2=29^2+21^2$

$y=35.81$

Generally solving for the differential equation is mathematically represented as

$x^2+y^2=29^2$

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

$x*\frac{dx}{dt} +y*\frac{dy}{dt} =0$

$(21)*\frac{dx}{dt} +(35.81)*(-7) =0$

$(21)*\frac{dx}{dt} -250.64 =0$

$\frac{dx}{dt}=\frac{250.64}{21}$

$\frac{dx}{dt}=11.94m/min$

5 0

3 years ago

How do you mutiply fractions

puteri [66]

Answer: The first step when multiplying fractions is to multiply the two numerators. The second step is to multiply the two denominators. Finally, simplify the new fractions. The fractions can also be simplified before multiplying by factoring out common factors in the numerator and denominator.

8 0

3 years ago

Read 2 more answers

Pls help i need to get 100% in khan acdemy

Dominik [7]

Answer:

A B and D

Step-by-step explanation:

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3 years ago

Read 2 more answers

Plz help with this page

gregori [183]

Answer:

19. C

Step-by-step explanation:

The sale only applies to two pairs of shoes at a time. So there are two sets of the sale.

Sale 1: $35 + $(35/2) = $52.5

Sale 2: ^^

Total cost = $105

Sales tax = 0.065 x $105 = $6.83

Total cost of purchase = $111.83

8 0

3 years ago