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2 years ago

if a model airplane is built at a scale of 1 inch to 6 feet. If the plane is 8 inches long how many feet is the airplane?

Mathematics

1 answer:

Lyrx [107]2 years ago

5 0

Answer:

The real plane is 48 ft long.

Step-by-step explanation:

Since the model airplane was built at a scale of 1 inch to 6 feet, this means that for every 1 inch on the model there is 6 feet on the real plane. We know that the model is 8 inches longs, therefore we need to multiply it's length by 6 and we will have the correct answer. We have:

real length(ft) = [model lengh (in)]*6

real length(ft) = 8*6 = 48 ft

The real plane is 48 ft long.

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A store is having a 40% off sale! If an item is originally priced at $20, what will be the sale price?

Ray Of Light [21]

Original Price = $20

Discount = 40%

First Calculate the discount amount by multiplying the original price (20) by the percentage discount in decimal form ( divided by 100)

20 x (40/100) = 20 x 0.4 = 8

Then subtract the discount amount to the original price:

20-8 = 12

Sale price : $12

4 0

8 months ago

What is -3(-6+8)^3-2(1-3)^3

marin [14]

Assignment: $\bold{Solve \ Equation: \ -3\left(-6+8\right)^3-2\left(1-3\right)^3}$

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Answer: $\boxed{\bold{-8}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Follow PEMDAS Order Of Operations; Calculate Within Parenthesis

Note: $\bold{PEMDAS: \ Parenthesis, \ Exponents, \ Multiply, \ Divide, \ Add, \ Subtract}$

$\bold{-6+8: \ 2}$

[ Step Two ] Rewrite Equation

$\bold{-3\cdot \:2^3-2\left(1-3\right)^3}$

[ Step Three ] Calculate Within Parenthesis

$\bold{1-3: \ -2}$

[ Step Four ] Rewrite Equation

$\bold{-3\cdot \:2^3-2\left(-2\right)^3}$

[ Step Five ] Calculate Exponents

$\bold{2^3: \ 8}$

[ Step Six ] Rewrite Equation

$\bold{-3\cdot \:8-2\left(-8\right)}$

[ Step Seven ] Multiply

$\bold{2\left(-8\right): \ -16}$

[ Step Eight ] Rewrite Equation

$\bold{-24-\left(-16\right)}$

[ Step Nine ] Subtract

$\bold{-24-\left(-16\right): \ -8}$

[ Step Ten ] Rewrite Equation

$\bold{-8}$

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$\bold{\rightarrow Mordancy \leftarrow}$

8 0

3 years ago

Paige measured 4/9 cup of onions, 3/4 cup of celery, and 2/7 cup of carrots. How many cups of vegetables did Paige measure out f

lozanna [386]

1whole 121/252
sorry if it's wrong

3 0

3 years ago

Read 2 more answers

Could someone help me rnnn?

GuDViN [60]

Answer:

vertex = (0, -4)

equation of the parabola: $y=3x^2-4$

Step-by-step explanation:

Given:

y-intercept of parabola: -4
parabola passes through points: (-2, 8) and (1, -1)

Vertex form of a parabola: $y=a(x-h)^2+k$

(where (h, k) is the vertex and $a$ is some constant)

Substitute point (0, -4) into the equation:

$\begin{aligned}\textsf{At}\:(0,-4) \implies a(0-h)^2+k &=-4\\ah^2+k &=-4\end{aligned}$

Substitute point (-2, 8) and $ah^2+k=-4$ into the equation:

$\begin{aligned}\textsf{At}\:(-2,8) \implies a(-2-h)^2+k &=8\\a(4+4h+h^2)+k &=8\\4a+4ah+ah^2+k &=8\\\implies 4a+4ah-4&=8\\4a(1+h)&=12\\a(1+h)&=3\end{aligned}$