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lorasvet [3.4K]
3 years ago
10

Solve . - 3a + 8 = 14

Mathematics
1 answer:
zysi [14]3 years ago
5 0

Answer:

a = -2

Step-by-step explanation:

-3a + 8 = 14

First you want to combine the constants by subtracting 8 from both sides.

-3a = 6

Now you want to isolate a by dividing both sides by -3.

a = -2

Check your answer by plugging -2 back into the equation.

-3(-2) + 8 = 14

6 + 8 = 14

14 = 14

Your answer is correct.

Hope this helps!

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Vikentia [17]
The formula of the Lateral Area of a cylinder is:
Lateral Area = 2\pirh
                     =2\pi(12)(60)          (altitude is 5×radius)
                                                                           (5×12=60)
                     =4523.9 mm² ≈ 4524 m²

Answer is D. 4524 m²
8 0
3 years ago
I don’t know what the answer to this question is , help
ipn [44]

Answer:

(4, 0)

Step-by-step explanation:

given the 2 equations

y = x - 4 → (1)

- 4x - 6y = - 16 → (2)

substitute y = x - 4 into (2)

- 4x - 6(x - 4) = - 16

- 4x - 6x + 24 = - 16

- 10x + 24 = - 16 ( subtract 24 from both sides )

- 10x = - 40 ( divide both sides by - 10 )

x = 4

substitute x = 4 into (1) for corresponding value of y

y = 4 - 4 = 0

solution is (4, 0)

3 0
3 years ago
Name two numbers on the number line that are a distance of 5 away from 3
tangare [24]
8 has to be one of them
4 0
2 years ago
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Find the substance's half-life, in days.<br> Round your answer to the nearest tenth.
shutvik [7]

Answer:

t = 5.6 day

t =5 days 14 hours 24 minutes

Step-by-step explanation:

Half life is the time it will take for the original value or quantity I'd a particular substance to decrease by half of it's original self.

N = N•e(-kt)

N• = 25

K = 0.1229

Then

N = 25/2 = 12.5

The reason because at the half life , it's original value will decrease to half.

Let's solve for the half life t

N = N•e(-kt)

12.5 = 25e(-0.1229t)

12.5/25 = e(-0.1229t)

0.5 = e(-0.1229t)

In 0.5 =-0.1229t

-0.69314 = -0.1229t

-0.69314/-0.1229 = t

5.6399 = t

To the nearest tenth

5.6 days = t

4 0
3 years ago
Find the missing length of the triangle. Round to the nearest tenth. a = _____, b = 7, c = 9
kogti [31]

Answer: Maybe 5.7

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5 0
2 years ago
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