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Lady bird [3.3K]
2 years ago
15

-4x-2y=14, -10x+7y=-25 find the coordinate pairs and put steps please.

Mathematics
1 answer:
earnstyle [38]2 years ago
7 0

Answer:

hey how u doin

Step-by-step explanation:

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Ellie has a 352-ounce bag of dog food. Her dog eats 24 ounces each day. How many full days will Ellie feed her dog before she ne
krek1111 [17]

Answer: 14 days

Step-by-step explanation:

352/24= 14.66666667

So it can feed her dog for 14 full days

3 0
3 years ago
There are 75 envelopes in a package. How many envelopes are there in 7 packages?
serg [7]
Answer= D

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5 0
3 years ago
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Please explain I really need help
velikii [3]

Answer:

1. 1343 years

2. 9 hours

3. 39 years

Step-by-step explanation:

1. Given, half-life of carbon = 5730 years.

∴ λ = 0.693/half-life of carbon = 0.693/5730 = 0.000121

If N₀ = 100 then N = 85

Formula:- N = N₀*e^(-λt)

∴ 85 = 100 * e^(-0.000121t)

∴㏑(-0.85)=-0.000121t

∴ t = 1343 years

2. Given half-life of aspirin = 12 hours

λ = 0.693/12 = 0.5775

Also N₀ = 100 then 70 will disintegrate and N = 30 will remain disintegrated.

∴ 70 = 100 *e^(-0.05775t)

0.70 = e^(-0.05775t)

㏑(0.70) = -0.05775t

∴ t = 9 hours

3.  The population of the birds as as A=A₀*e^(kt)

Given that the population of birds fell from 1400 from 1000, We are asked how much time it will take for the population to drop below 100, let that be x years.

The population is 1400 when f = 0, And it is 1000 when f = 5

We can write the following equation :

1400 = 1000e^(5t).

∴1400/1000 = e^(5k)

∴ k = ㏑(1.4)/5

We need to find x such that 1400/100 = e^(xk)

14 = e^(xk)

∴ x = 39 years

5 0
3 years ago
Graph y = | x | + 5
Elanso [62]

Answer:

(0,5) (0,-5)

Step-by-step explanation:

6 0
3 years ago
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Solve for X: <br> 5(2x-12)=140
Mrac [35]

Answer:

x=20

Step-by-step explanation:

10x-60=140

10x=140+60

10x=200

x=20

6 0
3 years ago
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