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3 years ago

Belinda runs 8 kilometers in 60 minutes. At this rate, how long would it take her to run 2 kilometers?

Mathematics

2 answers:

Kipish [7]3 years ago

5 0

Hi there!

$\large\boxed{15 \text{ }min}$

Create a proportion to solve for the amount of time required to run 2 kilometers:

8 km in 60 min

2 km in x min

Express as fractions:

$\frac{8}{60} = \frac{2}{x}$

Cross multiply:

8 · x = 60 · 2

8x = 120

Divide both sides by 8 to solve for x:

8x/8 = 120/8

x = 15 minutes

DiKsa [7]3 years ago

4 0

Answer:

15 minutes

Step-by-step explanation:

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3 years ago

Determine the inequality that can be used to model when the population of bacteria will be greater than or equal to 656,100. The

jenyasd209 [6]

The inequality is 100* $3^{t}$ ≤ 656100.

The correct option is (B).

<h3>What is inequality?</h3>

A statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

Given:

From the table attached below:

a=300, r= 900/300 = 3

As, it is GP

Now,

f(t) = $ar^{t-1}$

f(t) = $300*3^{t-1}$

f(t) = 300/3 * $3^{t}$

f(t) = 100* $3^{t}$

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100* $3^{t}$ ≤ 656100

Learn more about inequality here:

brainly.com/question/20383699

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2 years ago

Perform the following computations.You may use13≈0.333333,34= 0.75 and100301= 0.332226.(i). Compute13+34by using five significan

White raven [17]

Answer:

a. 1.0833

Absolute Error = 0.416667

Relative Error = 1.250002

b. 0.0011070

Absolute Error = 0.0011070

Relative Error = 0.003321

Step-by-step explanation:

Given

1/3 = 0.333333

3/4 = 0.75

100/301 = 0.332226

1/3 + 3/4

= 0.333333 + 0.75

= 1.083333

= 1.0833 ------ Approximated to 5 significant digits

Absolute Error = |Real Value - Estimated Value|

Relative Error = Absolute Error/Real Value

Assume 1/3 to be the real value and 3/4 to be the estimated value

Absolute Error = |0.333333 - 0.75|

Absolute Error = |-0.416667|

Absolute Error = 0.416667

Relative Error = 0.416667/0.333333

Relative Error = 1.250002

1/3 - 100/301

= 0.333333 - 0.332226

= 0.001107

= 0.0011070 ----- Approximated to 5 significant digits

Assume 1/3 to be real value and 100/301 to be estimated value

Absolute Error = 0.333333 - 0.332226

Absolute Error = 0.0011070

Relative Error = 0.0011070/0.333333

Relative Error = 0.003321

Absolute and relative errors are approximation errors and they are due to the discrepancy between an exact value and some approximation to them.

The absolute error is the magnitude of the difference between the exact value and the approximation. The relative error is the absolute error divided by the magnitude of the exact value

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