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IrinaVladis [17]
3 years ago
10

I need an answer ASAP.

Mathematics
1 answer:
melisa1 [442]3 years ago
7 0
6 positive tiles because there’s 6 negative so 6 positive will cancel it out
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What is 11 more than half a number
yuradex [85]

Answer:

x/2 + 11

Step-by-step explanation:

"half a number", implies that you are dividing by 2, or "halving the number".

"11 more", implies that you are adding 11.

~

7 0
2 years ago
You have 2000 grams of substance A which has decay constant 0.03, and you have 3000 grams of substance B, which has decay consta
joja [24]

Answer:

If you have a quantity X of a substance, with a decay constant r, then the equation that tells you the amount of substance that you have, at a time t, is:

C(t) = X*e^(-r*t)

Now, we know that:

We have 2000g of substance A, and it has a decay constant of 0.03 (i assume that is in 1/year because the question asks in years)

And we have 3000 grams of substance B, with a decay constant of 0.05.

Then the equations for both of them will be:

Ca = 2000g*e^(-0.03*t)

Cb = 3000g*e^(-0.05*t)

Where t is in years.

We want to find the value of t such that Ca = Cb.

So we need to solve:

2000g*e^(-0.03*t) = 3000g*e^(-0.05*t)

e^(-0.03*t) = (3/2)e^(-0.05*t)

e^(-0.03*t)/e^(-0.05*t) = 3/2

e^(t*(0.05 - 0.03))  = 3/2

e^(t*0.02) = 3/2

Now we can apply Ln(x) to both sides, and get:

Ln(e^(t*0.02)) = Ln(3/2)

t*0.02 = Ln(3/2)

t = Ln(3/2)/0.02 = 20.3

Then after 20.3 years, both substances will have the same mass.

6 0
3 years ago
4x – 4 – 3x > 13 – 7x – 1 + 8
Rashid [163]
If you would like to solve the inequation 4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8, you can do this using the following steps:

4 * x - 4 - 3 * x > 13 - 7 * x - 1 + 8
4 * x - 3 * x + 7 * x > 4 + 13 - 1 + 8
8 * x > 24      /8
x > 24/8
x > 3

The correct result would be x > 3.
4 0
3 years ago
A movie theater sells up to 10 tickets at a time online. what is the domain of this graph
avanturin [10]

Answer:

your asking a question about a graph without showing us the graph sweet heart

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A rectangular playground has a perimeter of 180 feet. If the width of the playground is 24 feet less than the length, what is th
Blababa [14]
P = 2(L + W)
P = 180
W = L - 24
now we sub
180 = 2(L + L - 24)
180 = 2(2L - 24)
180 = 4L - 48
180 + 48 = 4L
228 = 4L
228/4 = L
57 = L

W = L - 24
W = 57 - 24
W = 33

so ur length (L) = 57 ft and ur width (W) = 33 ft
3 0
3 years ago
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