3 years ago

Are the equations 3x=−9 and 4x=−12 equivalent? Explain.

Mathematics

1 answer:

pochemuha3 years ago

4 0

Answer:

Step-by-step explanation:

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Help please my teacher is putting in grade TODAY so i really need help

IRINA_888 [86]

Answer: 130 ft^2

Step-by-step explanation:

Area= 2(wl+hl+hw)

Area= 2(5•10+1•10+1•5)

Area= 2(50+10+5)

Area= 2(65)

Area= 130

5 0

3 years ago

Read 2 more answers

You are situated 300 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building

nordsb [41]

Answer:

18.66 ft/s

Step-by-step explanation:

The distance between you and the elevator is given by:

$h=\sqrt{x^2+y^2}$

The rate of change for the distance between you and the elevator is given by:

$\frac{dh}{dt}=\frac{dh}{dy}*\frac{dy}{dt}$

$-16=\frac{dh}{dy}*\frac{dy}{dt}$

$\frac{dh}{dy}=\frac{d}{dy} (\sqrt{x^2+y^2})\\$

Applying the chain rule:

$u=x^2+y^2\\\frac{dh}{dy}=\frac{d\sqrt u}{du} *\frac{du}{dy}\\\frac{dh}{dy}=\frac{1}{2\sqrt u} *2y\\\frac{dh}{dy}=\frac{y}{\sqrt {(x^2+y^2)}}$

Therefore, at x=300 and y = 500, dy/dt is:

$-16=\frac{y}{\sqrt {(x^2+y^2)}}*\frac{dy}{dt}\\-16=\frac{500}{\sqrt {(300^2+500^2)}}*\frac{dy}{dt}\\\frac{dy}{dt}=-18.66\ ft/s$

The elevator is descending at 18.66 ft/s.

7 0

3 years ago

3.625 x 10−4 Question 2 options: .3625 36,250 0.0003625

disa [49]

Answer:

0.0003625

:) Hope that helps :)

3 0

3 years ago

Trevor is making 2/3 of a recipe for chicken noodle soup. He adds ½ cup of chopped celery. The equation 2/3 c = 1/2 can be used

Nikitich [7]

Answer:

Cups of chopped celery in original recipe = $\frac{3}{4}\ cups$

Step-by-step explanation:

Given that:

Trevor is making 2/3 of a recipe

Number of cups of chopped celery used = 1/2 cup

The following equation can be used to find the original number of cups of chopped celery used in recipe.

$\frac{2}{3}c=\frac{1}{2}$

Multiplying both sides by 3/2

$\frac{3}{2}*\frac{2}{3}c=\frac{1}{2}*\frac{3}{2}\\\\c= \frac{3}{4}\\$

Hence,

Cups of chopped celery in original recipe = $\frac{3}{4}\ cups$

8 0

3 years ago

Kimberly currently has a balance of -$20.59 and her checking account. Her bank requires her to maintain a minimum balance of $40

jeka94

Answer:

-20.59=40

+20.59 +20.59

$60.69

hope this helps

3 0

3 years ago

Read 2 more answers