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inna [77]
3 years ago
10

Okay here you go people help.

Mathematics
2 answers:
riadik2000 [5.3K]3 years ago
3 0

Answer:

30p-7

Step-by-step explanation:

combine like terms

slamgirl [31]3 years ago
3 0
30p-7 combine like terms!!!



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How to find the surface area
Stolb23 [73]

Answer:

158 in²

Step-by-step explanation:

<u>Surface area</u>

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= 2·(3in·8in + 8in·5in + 3in·5in)

= 2·(24in² + 40in² + 15in²)

= 2·(79in²)

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al3xis

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3 years ago
To indirectly measure the distance across a river, Carson stands on one side of the
galina1969 [7]

Answer:

30

Step-by-step explanation:

I just did this at school lol

7 0
2 years ago
A 5.1-ft-tall person walks away from a 12-ft lamppost at a constant rate of 3.9 ft/sec. What is the rate that the tip of the per
nekit [7.7K]

Answer:

6.78ft/sec

Step-by-step explanation:

From the question, dx/dt= 3.9 ft/sec

We are looking for Dy/dt

From geometry,vof this case the relationship between x and y is needed here, there is two similar triangle that exhibited by the man and the lamb

12/y= 5.1/(y-x)

Then ,cross multiply, we have

12(y-x)=5.1y

12y-12x=5.1y

12y-5.1y=12x

6.9y=12x

y=( 12/6.9)x

Differentiating implicitly the bother sides with respect to t, we have

Dy/dt= ( 12/6.9)dx/dt

But dx/dt= 3.9 ft/sec

Then Dy/dt= ( 12/6.9)× 3.9

Dy/dt=6.78ft/sec

Hence, the rate that the tip of the person's shadow moves away from the lamppost when the person is 9 ft away from the lampost is 6.78ft/sec

CHECK THE ATTACHMENT FOR THE FIQURE

6 0
3 years ago
determine the simple interest applied to a principle over 20 years if the total interest paid equals the borrowed principal​
Over [174]

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Step-by-step explanation:

You want to find r when ...

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The simple interest rate is 5%.

6 0
3 years ago
Find Malcolm’s debt-to-income ratio if his monthly expenses are $975 and his monthly salary is $1200.
hjlf

Answer: D. 0.8125

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The debt-to-income ratio is 0.8125.

7 0
3 years ago
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