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Advocard [28]
3 years ago
9

To find the value of an algebraic expression is what?

Mathematics
1 answer:
Mashutka [201]3 years ago
6 0
Algebraic expression means Letter Can stand for numbers. Ex: 2y+5  and Y=10

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A submarine sits at –300 meters in relation to sea level. Then it descends 115 meters. What is its new position in relation to s
Dovator [93]

Answer:

-415 feet

Step-by-step explanation:

-300-115 = -415

7 0
3 years ago
Write an exponential model given the points ( 7, 12 ) and ( 8, 25 ). Round to the nearest hundredth.
inna [77]

Answer:

The exponential model is y = 0.07\cdot e^{0.73\cdot x}.

Step-by-step explanation:

The exponential model can be modelled by the following mathematical expression:

y = A\cdot e^{B\cdot x} (1)

Where:

x - Independent variable.

y - Dependent variable.

A, B - Coefficients.

If we know that (x_{1}, y_{1}) = (7,12) and (x_{2}, y_{2}) = (8,25), then we get the following system of equations:

A\cdot e^{7\cdot B} = 12 (2)

A\cdot e^{8\cdot B} = 25 (3)

If we divide (3) by (2), we calculate the value of B:

e^{B}=\frac{25}{12}

B = \ln \frac{25}{12}

B \approx 0.734

And by (2), we determine the value of A:

A = 12\cdot e^{-7\cdot B}

A = 0.0704

The exponential model is y = 0.07\cdot e^{0.73\cdot x}.

4 0
2 years ago
Colin invests £4000 into his bank account. He receives 5% per year simple interest. How much will Colin have after 3 years? Give
MakcuM [25]

Answer:

2750

Step-by-step explanation:

7 0
3 years ago
Answer the question and explain your answer. I will be marking brainiest! If you have the correct answer and explain why it’s co
cestrela7 [59]

Answer:

A = 200.96 sq ft

Step-by-step explanation:

formula for area of a circle:  A = π·r²

A = (3.14)·(8²)

A = 64·(3.14)

A = 200.96

7 0
3 years ago
You are on a game show and you are given the choice of three doors. Behind one door is a car (the main prize). Behind each of th
makvit [3.9K]

Answer:

You need to switch doors.

Switching the door has higher probability of winning.

Step-by-step explanation:

Consider the provided information.

Suppose there are 3 doors, A, B and C

Behind one door is a car that means the probability of getting a car is 1/3

Suppose you select door A

The probability that the it has a goat is 2/3. That means it is very likely to be a goat behind door A.

The other two door(B and C) are more likely to contain a goat and car.

The host opens another door which has a goat behind it. Let say he open the door B.

Now there is more chance to be a car behind it as compare to the previous choice.

Thus, you need to switch doors.

Switching the doors will gives you 2 in 3 chance of winning while staying with same door will gives you 1 in 3 chance of winning.

Switching the door has higher probability of winning.

4 0
3 years ago
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