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3 years ago

I need help, plz help

Mathematics

1 answer:

MatroZZZ [7]3 years ago

4 0

Answer:

pretty sure its D or B

Step-by-step explanation:

You might be interested in

What is the probability of getting a spade or a red card?

Verdich [7]

Answer:

3/4

Step-by-step explanation:

1/2 the deck is red cards.

1/4 of the deck is spades.

There are no spades that are red cards, so the probability of drawing a red card or a spade at random from a well-shuffled deck is ...

1/2 + 1/4 = 3/4

5 0

3 years ago

An airplane is flying on a bearing of 265° at 420 mph. a wind is blowing with a bearing of 210° at 30 mph. find the actual speed

photoshop1234 [79]

In both cases, y and x components are solved and added. The resulting hypotenuse is then computed and its direction calculated.

Airplane:
Ф = 270 - 265 = 5°
Hypotenuse, h = 420 mph
y component = 420 Sin Ф = 420 Sin 5 = 36.61 mph
x component = 420 Cos Ф = 420 Cos 5 = 418.40 mph

Wind
Ф = 270 -210 = 60°
Hypotenuse, h = 30 mph
y component = 30 Sin 60 = 25.98 mph
x component = 30 Cos 60 = 15 mph

Total y = 36.61+25.98 = 62.59 mph
Total x = 418.40+15 = 433.40 mph

Resulting speed of airplane = Sqrt (y^2+x^2) = Sqrt (62.59^2+433.40^2) = 437.9 mph
Direction = 270 -[tan^-1 (y/x)] = 270 -[tan^-1(62.59/433.40)] = 261.78°

8 0

4 years ago

Use the fraction bar interactive to find the difference:<br> 1/3-5/6

mestny [16]

Answer:negative 1/2

Step-by-step explanation:

5 0

3 years ago

What is the answer to this?

Salsk061 [2.6K]

Answer:

30 square feet

Step-by-step explanation:

area= length times width

5 0

4 years ago

Bobby wants to go on a school trip that will cost him $250. He comes up with an equation that represents how much he needs to sa

monitta

Yes, Bobby will have enough money if he saves for 9 weeks. You can find this through either substituting w for 9 in the equation, or solving the equation itself.

Substituting:

$25(9)+30$
Substitute w for 9.

$225+30$
Simplify.

$225+30=255$
Solve.

255 is greater than 250, so yes, he will have enough money saved.

Solving the equation:

$25w+30=250$
Original Equation

$25w=220$
Subtract 30 from both sides.

$w=8.8$
Divide both sides by 25.

The number of weeks he needs is 8.8. When rounding it up, you get 9.

4 0

4 years ago