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3 years ago

7

The length and breadth of a rectangular room are 5m and 3.2m. Find the cost carpeting the room at the rate of $500 per square me

tre

1 answer:

ollegr [7]3 years ago

6 0

The answer is 800 bc it is

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2y = x + 3 5y = x - 7 What is the solution set of the given system?

prohojiy [21]

<span>2y = x + 3 then x = 2y - 3
5y = x - 7 then x = 5y + 7

so
</span>2y - 3 = 5y + 7
2y - 5y = 7 + 3
-3y = 10
y = -10/3
y = -3 1/3

<span>2y = x + 3
</span>2 (-10/3) = x + 3
-20/3 - 3 =x
-29/3 = x
-9 2/3 =x
or
x = -9 2/3

solutions: x = -9 2/3 and y = -3 1/3

5 0

3 years ago

Read 2 more answers

Simplify:9-1÷2÷27^2÷3

sammy [17]

<u>First let's calculate the exponents.</u>

$27^2 : 729 = 9-1\div \:2\div \:729\div \:3$

<u>Now we should multiply and divide.</u>

<u /> $1\div2\div729\div3:\frac{1}{4374} = 9-\frac{1}{4374}$ <u />

<u>Now we should add and subtract.</u>

<u /> $9-\frac{1}{4374} :\frac{39365}{4374} = \frac{39365}{4374}$ <u />

<u>Convert the improper fractions into mixed numbers.</u>

<u /> $8\frac{4373}{4374}$ <u />

<u />

<u>Answer : </u>

<u /> $8\frac{4373}{4374}$ <u />

<u />

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2 years ago

Water has a freezing point of 32 degrees. Murcury has a freezing point that is 70 degrees lower. What is the freezing point of m

Mekhanik [1.2K]

Answer:

-38 degrees

Step-by-step explanation:

32-70

= -38

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2 years ago

sand falls from an overhead bin and accumulates in a conical pile with a radius that is always four times its height. suppose th

blagie [28]

Answer:

$\frac{dv}{dt} =7239.168 cm/sec$

Step-by-step explanation:

From the question we are told that:

Rate $\frac{dh}{dt}=1cm$

Height $h=12cm$

Radius $r=4h$

Generally the equation for Volume of Cone is mathematically given by

$V=\frac{1}{3}\pi r^2h$

$V=\frac{1}{3}\pi (4h)^2h$

Differentiating

$\frac{dv}{dt} =\frac{16}{3}\pi3h^2\frac{dh}{dt}$

$\frac{dv}{dt} =\frac{16}{3}*3.142*3*12^2*1$

$\frac{dv}{dt} =7239.168 cm/sec$

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2 years ago

Sam opened a money account that pays 3 % simple interest. He started the account with 7000$ and made no further deposits. When h

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He kept his account open for 3 years

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