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evablogger [386]
3 years ago
7

Suppose an airplane climbs 15 feet for every 40 feet it moves forward. What is the slope of this airplanes ascent?

Mathematics
1 answer:
Goryan [66]3 years ago
8 0

Answer:

3/8

Step-by-step explanation:

Slope is the same as rise over run, or y/x. In this case, rise over run is 15 over 40, or 15/40. Simplified, this is 3/8.

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Hurry!! Worth 10 points
Solnce55 [7]

Answer:

7 - 2x

Step-by-step explanation:

We start with

-2x + 7

And we can separate the terms

(-2x) (+7)

and move them around

(+7) (-2x)

7 - 2x is an equivalent expression.

7 0
3 years ago
Which is the 2nd term when 3+2x^2-3x^4+x^3 is Arranged in descending order.
AlladinOne [14]
I think the answer is B.
4 0
3 years ago
33762 to the nearest thousand?
Reil [10]

Answer:

34,000

179,400

39,900

Step-by-step explanation:

In the number 33,762, the 3 is in the thousands place, so we look to the number behind it. If it is less than 5, we round down, and if it is more than 5 we round up.

Since 7 is more than 5, we round up, so our rounded number would be

34,000

Let’s use this logic for the rest of these numbers

179,406

4 is in the hundreds

Previous number in 0 which is less than 5, so it rounds down

179,400

39,994

9 is in the tens place

Previous number is 4 which is less than 5, so it rounds down

39,990

8 0
3 years ago
Read 2 more answers
Noah spend $63 on souvenirs during his vacation.That is 35% of the money he bought with him.How much money does Noah have left t
Daniel [21]

Answer:

$81

Step-by-step explanation:

Hello, this is the logic:

If $63 ---> 35%

  $X -----> 100%

then,

X = [(100)*(63)]/35

X = $18

Then his total money was 63 + 18 = $81

Best regards

5 0
3 years ago
If x+y = 1, and x^2 + y^2 = -1, what is x^7 + y^13?<br> 1) 0<br> 2) 1<br> 3) -2<br> 4) 2<br> 5) -1
damaskus [11]

Solve for <em>x</em> and <em>y</em> :

<em>x</em> + <em>y</em> = 1   →   <em>y</em> = 1 - <em>x</em>

<em>x</em> ² + <em>y</em> ² = -1

<em>x</em> ² + (1 - <em>x</em>)² = -1

<em>x</em> ² + (1 - 2<em>x</em> + <em>x</em> ²) = -1

2<em>x</em> ² - 2<em>x</em> + 1 = -1

2<em>x</em> ² - 2<em>x</em> + 2 = 0

<em>x</em> ² - <em>x</em> + 1 = 0

<em>x</em> ² - <em>x</em> + 1/4 = -3/4

(<em>x</em> - 1/2)² = -3/4

<em>x</em> - 1/2 = ±√(-3/4)

<em>x</em> - 1/2 = ±√3/2 <em>i</em>

<em>x</em> = 1/2 ± √3/2 <em>i</em>   →   <em>x</em> = exp(± <em>iπ</em>/3)

<em>y</em> = 1 - (1/2 ± √3/2 <em>i</em> )   →   <em>y</em> = -1/2 ± √3/2 <em>i</em>   →   <em>y</em> = exp(± 2<em>iπ</em>/3)

Then

<em>x </em>⁷ + <em>y </em>¹³ = exp(± 7<em>iπ</em>/3) + exp(± 26<em>iπ</em>/3)

… = exp(± <em>iπ</em>/3) + exp(± 2<em>iπ</em>/3)

since 7<em>π</em>/3 is equivalent to <em>π</em>/3, and 26<em>π</em>/3 is equivalent to 2<em>π</em>/3 (both modulo 2<em>π</em>).

In either case, we get

<em>x </em>⁷ + <em>y </em>¹³ = <em>x</em> + <em>y</em> = 1

so the answer is (2) 1.

8 0
3 years ago
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