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3 years ago

PLS AWNSER FAST I WILL GIVE BRAILIEST

Mathematics

1 answer:

Dovator [93]3 years ago

7 0

Answer:

Step-by-step explanation:

200x 100 = 20000

house 40x40 = 1600

garage = 24x30 = 720

20000-1600-720= 17680

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A sphere of radius 3 inches is sliced with two parallel planes: one passes through the equator and the other is H inches above t

Leni [432]

Answer:

V = (π/3)H(27 – H2) : Please see attachment

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b.rate of change of the volume with respect to H = 8π

c.H=0.0114 inch

Step-by-step explanation:

Please see attachment

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3 years ago

Two less than y is subtracted from x

hram777 [196]

Answer: x- (y-2)

Step-by-step explanation:

Two less than y would be y-2,

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2 years ago

If y=8 when x=3 when x=45

Veronika [31]

Answer:

The value of y for x = 45 is 120 .

Step-by-step explanation:

Given as :

Let The variables y and x are proportional to each others

I,e y ∝ x

Now , y = k x

So, for x = 3 , y = 8

I.e 8 = k × 3 ........1

∴ k = $\frac{8}{3}$

<u>Similarly </u>

for x = 45 , y = k × 3

I.e y = k × 45 ..........2

Now, putting the value of k in eq 2

So, y = $\frac{8}{3}$ × 45

I.e y = $\frac{8\times 45}{3}$

Or, y = 8 × 15

∴ y = 120

So, for x = 45 , y = 120

Hence The value of y for x = 45 is 120 . Answer

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3 years ago

A bookstore can purchase several calculators for a total cost of $120. If each calculators cost $1 less, the bookstore could pur

Tresset [83]

$x-number\ of\ calculators\ sold\ in\ regular\ price\\\\
y-\ \ first\ price\\\\
(y-1)\ \ -second\ price\\\\x=\frac{120}{y}\\
x+10=\frac{120}{y-1}\\\\Substitude\ x=\frac{120}{y}\ into\ the\ second\\\\\
\frac{120}{y}+10=\frac{120}{y-1}\ \ |-\frac{120}{y-1}-10\\\\
\frac{120}{y}-\frac{120}{y-1}=-10\\\\Make\ a\ common\ denominator\\\\
\frac{120(y-1)}{y(y-1)}-\frac{120y}{(y-1)y}=-10
\frac{120y-120)}{y(y-1)}-\frac{120y}{(y-1)y}=-10\\\\
\frac{120y-120-120y}{y(y-1)}=-10$ <u /> $Assumptions:\\y \neq 0\ \ \ and\ \ y \neq 1\\\\ \frac{-120}{y(y-1)}=-10\ \ \ | *y(y-1) \\\\
-120=-10y(y-1)\\\\
-120=-10y^2+10y\\\\
10y^2-10y-120=0\ \ \ |:10\\\\
y^2-y-12=0\\\\Factor\ equation\\\\ y^2+3y-4y-12=0\\\\
(y-4)(y+3)=0\\\\Solutions:\ \ y=4\ \ and\ \ y=-3$

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4 years ago

Captain Renner is sailing the ocean, and his ship is low on supplies. He needs to reach land and restock before his crew mutinie

vazorg [7]

Answer:

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3 years ago

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