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goblinko [34]
3 years ago
9

4. Sammy created a model of a frontier fort. He used a scale

Mathematics
1 answer:
alina1380 [7]3 years ago
3 0

Answer:

18 ft. tall

Step-by-step explanation:

This is because if 1 in. equals 2 ft. and the wall of the model were 9 ft. tall you would multiply 9 in. by 2 ft. and get 18 ft.

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Evaluate the given algebraic expression for x = 3 and y=3.<br> x^2y^2
Keith_Richards [23]

Answer:

81

Step-by-step explanation:

3^{2} =9\\3^{2} =9

9 x 9 = 81

7 0
3 years ago
The mass of a bacteria culture doubles every four days. If the initial sample is 5mg: a) how much will you have after one week (
maks197457 [2]

Answer:

a) 16.82 mg

b) 24 days

Step-by-step explanation:

Formula for exponential growth is given as:

A=A_0b^{\frac{t}{c}}

Where A is the final population

A_0 is the initial population

b is the growth factor

c is the time taken for the growth 'b'

t is the amount of time

Here, We are given the following:

A_0 = 5 mg

b = 2 (Given because it doubles)

c = 4 days

a) A = ?

Using the formula:

A=5 \times 2^{\frac{7}{4}}\\\Rightarrow A=5 \times 2^{1.75} \\\Rightarrow A = \bold{16.82\ mg}

b) Given

A = 320 mg

t = ?

Using the above formula again:

320 = 5 \times 2^{\frac{t}{4}}\\\Rightarrow \dfrac{320} 5= 2^{\frac{t}{4}}\\\Rightarrow 2^{\frac{t}{4}} = 64\\\Rightarrow 2^{\frac{t}{4}} = 2^6\\\Rightarrow \dfrac{t}{4} = 6\\\Rightarrow t = 6 \times 4\\\Rightarrow \bold{t = 24\ days}

So, the answers are:

a) 16.82 mg

b) 24 days

6 0
3 years ago
What's to look back?
Monica [59]

Answer: 74.25 Php, 4.45kg, 182 Php, 30 People, and 315 Php

Step-by-step explanation:

1. 200-125.75= 74.25 Php

2. 1.5+1.7+1.25=4.45kg

3. 45.50*4 = 182 Php

4. 45/1.5 = 30 People

5. 35.00*9 = 315 Php

6 0
3 years ago
PLEASE HELP! ITS ALMOST MIDNIGHT AND IM TAKING MY BENCHMARKS
Mrac [35]
The answer is C. Hope this helps
3 0
3 years ago
Read 2 more answers
.Solve the following equations, leaving your answer as a fraction where appropriate: 10(2x + 12) = -7(x + 12) ​
Yanka [14]
The answer is going to be 68/9 and the fraction is negative.
hope this help!
8 0
2 years ago
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