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stepladder [879]
3 years ago
12

The ages of three cats are a, a+4 and 2a-3. Their total age is 21. Determine a.

Mathematics
2 answers:
Anastaziya [24]3 years ago
6 0

Answer:

Ages of cats => a, a+4, 2a-3

Thus,

a + a + 4 + 2a - 3 = 21 \\  \\ 4a + 1 = 21 \\  \\ 4a = 20 \\  \\ a = 5

The a is 5.

Furkat [3]3 years ago
4 0
A+a+4+2a-3= 21

combine like terms

1+4a= 21
-1. -1

4a= 20
————
4a. 4

a= 5
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Hi I need help with the question in the image. Step by step, thank you!
VashaNatasha [74]

The exponential function is f(x) = 18(12)^{-x-4} + 2

<h3>How to determine the equation?</h3>

An exponential function is represented as:

y = b^x

Where b represents the base.

The base is given as:

b = 12

So, we have:

y = (12)^x

It is vertically compressed by a factor of 1/8.

So, we have:

y = 18(12)^x

When reflected across the y-axis, we have:

y = 18(12)^{-x}

The horizontal asymptote is y = 2.

So, we have:

y = 18(12)^{-x} + 2

It passes through the point (-3, 4).

So, we shift the function to the right by 4 units

y = 18(12)^{-x-4} + 2

Express as a function

f(x) = 18(12)^{-x-4} + 2

Hence, the exponential function is f(x) = 18(12)^{-x-4} + 2

Read more about exponential functions at:

brainly.com/question/14355665

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6 0
2 years ago
Mrs Fuller plants a 4 inch tomato plant in her garden. The tomato plant grows at a rate of 2 inches each week. Which equation ca
kykrilka [37]

Answer: 4 + 2w

Step-by-step explanation:

The height of the tomato plant in inches after w weeks will be the value of the current height plus the weekly growth pee week. This can be represented in an equation as:

h = 4 + 2(w)

h = 4 + 2w

For example, the height of the tomato plant in inches after 5 weeks will be:

h = 4 + 2w

h = 4 + 2(5)

h = 4 + 10

h = 14 inches

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3 years ago
How many 1s are in 72s family
Radda [10]
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prohojiy [21]

Answer:

Dinner only: $75

Dinner and Tip: $90

Step-by-step explanation:

If the tip was $15, and the tip was 20% of the price of dinner, then dinner was $75.

You can find this out by doing 15/20%, which should give you 75.

If the question requires you to add up the price of dinner and the tip, then the total price would be $90

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3 years ago
Identify the y-intercept for the line 4x – 2y = 4
stellarik [79]

Answer: (0,-2)

Step-by-step explanation: uhdehdwhehehhH

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