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Setler79 [48]
4 years ago
8

Your teacher is giving a test worth 200 points. There is a total of 30 five-point and ten-point questions. How many five-point q

uestions are on the test?
Mathematics
1 answer:
densk [106]4 years ago
5 0

Answer: there would be 20, 5 point questions.


Step-by-step explanation:

There are 30 questions, all equaling out to 200 points.  you can't have 20, 10 point questions because that would equal 200 points all by its self.  So, you would do 10, 10 point questions, and 20, 5 point ones because 20 times 5 is 100, ad that 100 plus the other 100 from the 10 point questions would e 200.  I hope this helps :)

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I need this two questions
Setler79 [48]

Just solve.

(17-k)^3\\k=12 \\ \\ (17-12)^3 \\ \\ (5)^3 \\ \\ 125\\

\\\\(5+2n)^5 \\ n=-2 \\ \\ (5+2(-2))^5 \\ \\ (5-4)^5 \\ \\ (1)^5 \\ \\ 1

4 0
3 years ago
Which trigonometric functions are negative in the fourth (IV) quadrant?
anzhelika [568]
<h3>Answers are: sine, tangent, cosecant, cotangent</h3>

Explanation:

On the unit circle we have some point (x,y) such that x = cos(theta) and y = sin(theta). The sine corresponds to the y coordinate of the point on the circle. Quadrant IV is below the x axis which explains why sine is negative here, since y < 0 here.

Since sine is negative, so is cosecant as this is the reciprocal of sine

csc = 1/sin

In quadrant IV, cosine is positive as x > 0 here. So the ratio tan = sin/cos is going to be negative. We have a negative over a positive when we divide.

Because tangent is negative, so is cotangent.

The only positive functions in Q4 are cosine and secant, which is because sec = 1/cos.

7 0
3 years ago
An airplane travels 6903 kilometers against the wind in 9 hours and 8613 kilometers with the wind in the same amount of time. Wh
Rzqust [24]

Answer:

The rate of the plane is 862 miles per hour

Step-by-step explanation:

An airplane travels 6903 kilometers against the wind in 9 hours.

Speed = distance / time

Speed of the airplane while travelling against the wind is

6903/9 = 767 miles per hour

The airplane travelled 8613 kilometers with the wind in the same amount of time. This means that the speed while travelling with the wind will be

8613/9 = 957 miles per hour

Let x = speed of the airplane

Let y = speed of the wind

While travelling against the wind,

x - y = 767 - - - - - -- 1

While travelling with the wind,

x + y = 957 - - - - - - -2

Subtracting equation 2 from equation 1,

-y - y = 767 - 957

-2y = -190

y = -190/-2

y = 95 miles per hour

x = 957 - y

x = 957 - 95

x = 862 miles per hour

4 0
4 years ago
Acellus
Shalnov [3]

Answer:

24 in

Step-by-step explanation:

i donk know

its a guess

6 0
3 years ago
Please help with problem 19. (ONLY IF YOU KNOW) thanks
Stella [2.4K]
7 cars full and 5 people on the next car
8 0
3 years ago
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