A certain type of water lily doubles the area it covers every year. Ten years after being planted in our lake the water lilies cover a quarter of the lake's surface. How many more years will it be before they cover the entire surface of the lake?

Answers

Answer 1

Answer: 2 years. The first time it would go from a quarter of the lake to half. The next year it would double that, taking over the whole lake.

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Solve this equation -9-6+12h+40=22

A. h=24
B. h= -4/7
D. h= -4

Answers

Answer:

$h=-(1)/(4)$

Step-by-step explanation:

We have been given an equation $-9-6+12h+40=22$ . We are asked to solve our given equation.

First of all, we combine like terms as shown below:

$-15+12h+40=22$

$12h+25=22$

Now, we will subtract 25 from both sides of our equation.

$12h+25-25=22-25$

$12h=-3$

Upon dividing both sides of our equation by 12, we will get:

$(12h)/(12)=(-3)/(12)$

$h=-(1)/(4)$

Therefore, the solution for our given equation is $h=-(1)/(4)$ .

-9-6+12h+40=22
12h+25=22
12h=-23
h=-23/12

A 25 kg rock , is raised to the top of a hill 10 m high. What is the Potential Energy of the rock ?

Answers

Answer:

2450 J

Step-by-step explanation:

mass(m)=25kg

height(h)=10m

gravity(g)=9.8

now,

PE=mgh

=25×10×9.8

=2450J

ANS

What is the value of x in the equation x – y = 30, when y = 15?

Answers

the answer is 45

because I know 15+15=30 and 30+15=45

so 45-15=30

hope it helps :)

Answer:

x=27

Step-by-step explanation:

this is the answer for ed

Simpify this expresion 7+5h+2h+7h2–2h2

Answers

Answer:

$5h^2 + 7h + 7$

Step-by-step explanation:

We can simplify this expression by combining like terms.

To combine like terms, we are looking for terms that share the same variable and exponent.

First, we can see that the terms $7h^2$ and $-2h^2$ share the same variable (h) and the same exponent (2).

$7 - 2 = 5$

This simplifies to $5h^2$ .

Next, we can see that $5h$ and $2h$ share the same variable (h) and the same exponent (1) so we can add these.

$5+2=7$

This simplifies to $7h$ .

Lastly, we can see that we just have 7, no more terms with the same variable (none). So this is 7.

Adding up all the terms in standard form ( $ax^2 + bx + c$ ), we get $5h^2 + 7h + 7$ .

Hope this helped!

What is the equation, in point-slope form, for a line that goes through (2, -6) and hasa slope of 3/5
A. y - 6 = 3/5 (x + 2)

B. y - 2 = 3/5 (x + 6)

C. y+2 = 3/5 (x – 6)

D. y+6= 3/5 (x - 2)

Answers

Answer: D

Explanation:

Point slope form:

(y - y1) = m(x - x1)

Coordinate given = (2,-6)
Slope = 3/5

Thus:
(y -(-6)) = 3/5(x - 2)
y + 6 = 3/5(x - 2)

A manufacturer makes ball bearings out of molten steel. It takes 5.24 cubic centimeters of molten steel to make ? ball bearings that each have a diameter of 1 centimeter.

Answers

So we want to know how much ball bearings can be made with 5.24 cm^3 if one ball bearing has a diameter of 1 cm. We know that radius r=d/2=0.5cm So the volume V of one ball bearing is: V=(4/3)*pi*r^3 so V=(4/3)*3.14*(0.5)^3cm^3=0.524cm^3. Now we simply divide the volume of steel by the volume of the ball bearing: 5.24/0.524=10. So we can make 10 ball bearings from 5.24 cm^3 of steel

Answer: 10 ball bearings

Plato is annoying

Step-by-step explanation:

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