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3 years ago

Please help me! Can someone explain it

Mathematics

2 answers:

sashaice [31]3 years ago

8 0

Answer:

Step-by-step explanation:

il faut que tu calcul le perimetre du carré de 9sur9 et que tu lui soustrait le perimetre du rectangle de 4cm sur 6cm

OlgaM077 [116]3 years ago

3 0

Answer:

Step-by-step explanation:

The unknown side of the shape is 4+6=10

3+4+6+9+10=32

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Divide m2n3/p3 by mp/n2

kipiarov [429]

The answer is (B). I hope this helps!

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3 years ago

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An airplane begins its descent. After 4 minutes, it is 22,000

Blababa [14]

Answer:

2,000 feet/minute

Step-by-step explanation:

After four minutes the plane has descended to 22,000 feet, and after seven minutes it has descended to 16,000 feet, so the plane lost 6,000 feet of altitude in three minutes. Assuming it lowers at a constant rate of change, the rate of change of the airplane would be $\frac{6000}{3}$ or 2,000 feet/minute.

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3 years ago

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What is 4/20 simplified

frozen [14]

4/20 simplified would be 1/5. You must know what simplify means first. It means to break down a fraction to its simplest form. So, to simplify 4/20, you must divide 4 from the denominator and numerator. A numerator is a number that is the number above the line. A denominator is the number on the bottom of the line.
Dividing 4 from the denominator and numerator would make it 1/5. Therefore, the answer in simplest form is 1/5. Good luck!

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4 years ago

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Find the coordinates of the midpoint for the line with endpoints; A(-1, 5) and B(2, -3). Use the midpoint formula.

pashok25 [27]

Answer:

(0.5, 1)

Step-by-step explanation:

The midpoint formula says that the midpoint between two points (a, b) and (c, d) is:

$(\frac{a+c}{2},\frac{b+d}{2})$

Here, a = -1, b = 5, c = 2, and d = -3, so the midpoint is:

$(\frac{a+c}{2},\frac{b+d}{2})$

$(\frac{-1+2}{2},\frac{5-3}{2})=(\frac{1}{2} ,\frac{2}{2} )=(0.5,1)$

The answer is thus (0.5, 1).

5 0

3 years ago

H varies directly to the cube of c.<br> When H = 40, C = 2.<br> (a) Express H in terms of c.

Alecsey [184]

Answer:

H in terms of c is H = 5c³.

Step-by-step explanation:

Given that:

H = 40 and c = 2

H varies directly to the cube of c.

Which means that,

H ∝ c³

Let,

k be the proportionality constant.

H = kc³

Putting H=40 and c=2

$40=k(2)^3\\40=k(8)\\40=8k\\8k=40$

Dividing both sides by 8,

$\frac{8k}{8}=\frac{40}{8}\\k=5$

Now,

H in terms of c.

H = 5c³

Hence,

H in terms of c is H = 5c³.

4 0

4 years ago