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Sunny_sXe [5.5K]
3 years ago
8

Can someone help me please

Mathematics
1 answer:
artcher [175]3 years ago
6 0

Answer:

$22.75

Step-by-step explanation:

C = $30.25 - ($0.25/min)x, where x is the number of minutes spent on calls

Here, 30 minutes of calls result in this amount of $ left on the card:

C(30) = $30.25 - ($0.25/min)(30 min) = $22.75

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A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the
Liono4ka [1.6K]

Answer:

The wall is 10.5 foot far from the bottom of the ladder.

Step-by-step explanation:

Given:

Height of the ladder leaning against wall (Hypotenuse) = 20 foot.

Height from where the window is above from the ground (Leg1) = 17 feet.

To find the distance of the bottom of the ladder far from the wall (Leg2) = ?

Now, by using the pythagorean theorem:

Hypotenuse^{2} = (Leg1)^{2} + (Leg2)^{2}

20^{2} =17^{2}+(Leg2) ^{2}

400=289+(Leg2)^{2}

400-289=(Leg2)^{2}

111=(Leg2)^{2}

by squaring both sides

Leg2=10.535

10.535 foot rounded nearest tenth is 10.5 foot.

Therefore, the wall is 10.5 foot far from the bottom of the ladder.  

6 0
3 years ago
Which graph does not represent a function ?
baherus [9]

Answer: the the 2nd circular one

Step-by-step explanation: Functions can't just go in a circle, they will repeat the x value

4 0
3 years ago
What is 333x2+999-999 divided by 2 =
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<u>Answer:</u>

<u>333×2+999-999÷2= 333</u>

<u>Step-by-step explanation:</u>

8 0
3 years ago
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Answer:

Step-by-step explanation:

y - y₁ = m ( x - x₁)

y - 5  = - 3 (x - 12)

y - 5 = -3x + 36

3x + y = 36 + 5

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Please help me quickly -5 - 6a = -59
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Answer:

a=9

Step-by-step explanation:

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