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2 years ago

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5 Vince draws the figures below. He says each figure has an area of 8 square units. Is he correct? Decide if each figure has an

area of 8 square units. Choose Yes or No for each figure.

1 answer:

igor_vitrenko [27]2 years ago

6 0

Answer:ok so it is 1 A 2C 3 F 4H

Step-by-step explanation:

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Celeste wants to have her hair cut and permed and also go to lunch. She knows she will need $68. The perm costs twice as much as

Nezavi [6.7K]

Let P=Perm cost
Let H = Haircut cost
Let L = Lunch cost

Perm costs twice as much as haircut so.. P = 2H
L = 5

H + P + L = 68 the total cost is $68

H + 2H + 5 = 68 since P = 2H and L=5

3H + 5 = 68

3H =63

H = 63/3

H = 21

A Haircut is $21
Perm = 2H = 2(21) = $42

6 0

3 years ago

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Two scuba divers, Jim and Tara, are 20m apart below the surface of the water. They both spot a shark that is below them. The ang

LenaWriter [7]

Answer:

Jim is 12.87 meters away from the shark.

Step-by-step explanation:

We are given that,

Distance between Jim and Tara = 20 meters.

The angle of depression of the shark from Jim and Tara is 47° and 40° respectively as shown in the figure below.

So, the third angle of the triangle formed is given by,

47° + 40° + ∠S = 180°

i.e. ∠S = 180° - 87°

i.e. ∠S =93°

So, now using the sine ratio formula, we have,

$\frac{20}{\sin 93}=\frac{x}{\sin 40}$

i.e. $x=\frac{20\times 0.6428}{0.9986}$

i.e. $x=\frac{12.856}{0.9986}$

i.e. x = 12.87 meters

Thus, Jim is 12.87 meters away from the shark.

4 0

4 years ago

Evaluate The Expression 3(× - 1)² +2× - 7 for × = 3

jeyben [28]

$\bf 3(x-1)^2+2x-7\implies \stackrel{\stackrel{x=3}{\cfrac{}{}}}{3[(3)-1]^2+2(3)-7}\implies 3[2]^2+6-7 \\\\\\ 3[4]+(-1)\implies 12-1\implies 11$

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4 years ago

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8(3 – 2x)+ 4(3x – 2)=-16 <br>Can someone solve for x? please

castortr0y [4]

Answer: x = 8

Step-by-step explanation:

8(3-2x) + 4(3x - 2) = -16

expanding the equation , we have

24 - 16x +12x - 8 = -16

16 - 4x = -16

collecting the like terms

4x = 32

x = 32/4

x = 8

4 0

4 years ago

Which one is it........

ruslelena [56]

$\begin{cases}4(x+y)=2x+12\\4x+y=x+8\end{cases}\\\\\\
\begin{cases}4x+4y=2x+12\quad|-2x\\4x+y=x+8\quad|-x\end{cases}\\\\\\
\begin{cases}4x+4y-2x=12\\4x+y-x=8\end{cases}\\\\\\
\boxed{\begin{cases}2x+4y=12\\3x+y=8\end{cases}}$

3 0

4 years ago