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Lera25 [3.4K]
4 years ago
9

Help me please I done understand

Mathematics
1 answer:
KonstantinChe [14]4 years ago
6 0
I don’t understand either
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The original price of a movie is $18.the sale price is20% off the original price. what is the amount off the original price?
anygoal [31]
Discount = 20 over 100 x 18
                =$3.60
8 0
3 years ago
Example of when you would use the friendly numbers strategy to subtract
Yuliya22 [10]
Really big numbers that can easily be estimated.
like 
9,998 - 2,999
4 0
3 years ago
Calculate the distance between (4,9) and (-2,6) using the distance formula.
MAVERICK [17]

Answer:

\large\boxed{d=3\sqrt5}

Step-by-step explanation:

\text{the formula of a distance between two points}\ A(x_1,\ y_1)\ \text{and}\ B(x_2,\ y_2):\\\\|AB|=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\=========================\\\\\text{We have}\ (4,\ 9)\ \text{and}\ (-2,\ 6).\ \text{Substitute:}\\\\d=\sqrt{(-2-4)^2+(6-9)^2}=\sqrt{(-6)^2+(-3)^2}=\sqrt{36+9}=\sqrt{45}\\\\\sqrt{45}=\sqrt{9\cdot5}=\sqrt9\cdot\sqrt5=3\sqrt5

6 0
3 years ago
the angle of elevation from the bottom of a scenic gondola ride to the top of a mountain is 31 degrees. if the vertical distance
Eduardwww [97]

Answer:

The ride lasts 10 minutes.

Step-by-step explanation:

The triangle that is formed is attached.

In order to find out how long the ride lasts, we need to figure out the horizontal distance d.

From trigonometry we have:

tan(31^o)=\frac{902}{d}.

Therefore

d=\frac{902\:feet}{tan(31^o)}=1501\:feet.

Now the amount of time t the gondola ride lasts is equal to the distance d divided by the speed of the gondola:

t=\frac{1501ft}{155ft/sec} =\boxed{9.69\:minutes.}

To the nearest minute this is 10 minutes.

7 0
3 years ago
If anyone wants to help me it would be greatly appreciated
valkas [14]

Answer:

19. x=28°

<E = 67°

20. x= 9°

<L = 25°

Step-by-step explanation:

19. Supplementary means that the angles will add to make a straight line, or they will add to = 180

<L+<E = 180°

4x+1°+3x-17°=180°

7x-16°=180°

7x=196°

x=28°

Measure of Angle E

<E = 3x-17° = 3(28°)-17° = 67°

20. Vertical angles are congruent, or equal to each other.

<L = <E

2x+7° = 4x-11°

2x+18° = 4x

18° = 2x

9° = x

x = 9°

<L = 2x+7° = 2(9°)+7° = 18°+7° = 25°

4 0
4 years ago
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