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Len [333]
3 years ago
15

A hovercraft takes off from a platform.

Mathematics
1 answer:
grigory [225]3 years ago
4 0

Answer:

  11 seconds

Step-by-step explanation:

The value of h(x) is zero when either of the factors is zero:

  x -11 = 0   ⇒   x = 11

  x +3 = 0   ⇒   x = -3

The solution x = -3 is not in the practical domain of the model, so the only reasonable solution is x = 11.

The hovercraft will land 11 seconds after takeoff.

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40 percent of the area
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4 years ago
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Can someone please help me and explain this to me ! Thanks !
Korolek [52]
Imagine first splitting 6 wholes up into fourths. That means that, for each whole (each 1) in 6, we're creating 4 equal slices. This gives us 4 x 6 = 24 total slices, which we call <em>fourths</em>. How many groups of <em>3 fourths </em>(3/4) can you make out of those <em>24 fourths </em>(24/4)? If we throw aside the label <em>fourths</em> for a minute, in general, if we have 24 <em>things</em>, how many groups of 3 <em>things</em> can we make out of those? Well, our answer there would just be 24 ÷ 3 = 8 groups.

The same thing applies to fourths. If we have 24/4, and we divide it by 3/4, we get 24 ÷ 3 = 8 groups again, so our answer is <em />8 3/4-pound packages.
5 0
4 years ago
Question 25
AysviL [449]

Answer:

120

Step-by-step explanation:

First, you have to calculate the money that Seth would spent if he goes to 30 movies if his father gets the summer movie pass by adding up the cost of the pass plus the result of multiplying the cost per movie with the pass for the number of movies:

30+(3*30)=30+90=120

Second, you need to calculate the money that Seth would spent if he goes to 30 movies without the pass by multiplying the normal price per movie for the number of movies:

8*30=240

Third, you need to find the difference between both costs:

240-120=120

According to this, the answer is that if Seth plans to go to 30 movies this summer, he would save 120.

8 0
3 years ago
Which point is the solution to the following system of equations?
Naya [18.7K]

The point (3, 2) is the solution to given system of equations

<em><u>Solution:</u></em>

Given that system of equations are:

x^2 + y^2 = 13    ------ eqn 1

2x - y = 4    ------- eqn 2

From eqn 2,

y = 2x - 4

Substitute y = 2x - 4 in eqn 1

x^2 + (2x - 4)^2 = 13\\\\x^2 + 4x^2 + 16 - 16x = 13\\\\5x^2 -16x + 3 = 0

Let us solve the above equation by quadratic formula,

\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0\\\\x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}

Using the Quadratic Formula for 5x^2 -16x + 3 = 0 where  a = 5, b = -16, and c = 3

\begin{aligned}&x=\frac{-(-16) \pm \sqrt{(-16)^{2}-4(5)(3)}}{2 \times 5}\\\\&x=\frac{16 \pm \sqrt{256-60}}{10}\\\\&x=\frac{16 \pm \sqrt{196}}{10}\end{aligned}

The discriminant b^2 - 4ac>0 so, there are two real roots.

\begin{aligned}&x=\frac{16 \pm \sqrt{196}}{10}=\frac{16 \pm 14}{10}\\\\&x=\frac{16+14}{10} \text { or } \frac{16-14}{10}\\\\&x=\frac{30}{10} \text { or } x=\frac{2}{10}\\\\&x=3 \text { or } x=0.2\end{aligned}

Substitute for x = 0.2 and x = 3 in 2x - y = 4

<em><u>when x = 3</u></em>

2(3) - y = 4

6 - y = 4

y = 2

<em><u>when x = 0.2</u></em>

2(0.2) - y = 4

0.4 - y = 4

y = 0.4 - 4

y = -3.6

Thus Option D is correct The point is (3, 2)

7 0
3 years ago
PLEASE HELP I AM TIMES ON A FINAL U DONT NEED TO SHOW WORK AND ANSWER IF 100% SURE
sattari [20]

Answer:

214.34

Step-by-step explanation:

.95^3=.857375

.857375(250)= 214.34375

7 0
2 years ago
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