3 years ago

A rectangle measures 18 cm by 3 cm what is its area

Mathematics

1 answer:

ioda3 years ago

5 0

Answer:

54 cm²

Step-by-step explanation:

Area of a Rectangle Formula: A = lw

We are given 18 as l and 3 as w, so simply plug it into the formula:

A = 18(3)

A = 54

You might be interested in

Graph y = 2x + 5. Need help ASAP plz and thank you

soldi70 [24.7K]

Answer:

*see graph below*

Step-by-step explanation:

y = mx + b

m = slope (rise over run)

b = y-intercept

Corresponding with the given equation, the graph below has a y-intercept of 5, and a slope of $\frac{2}{1}$ or 2.

8 0

3 years ago

Read 2 more answers

In a group of 42 children there r twice as many boys as girls how many girls r there

777dan777 [17]

14 girls are there!

4 0

3 years ago

Read 2 more answers

A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean is less than

Nonamiya [84]

Answer:

Lets take the hypothesis

zα/2 

- zα/2 

Step-by-step explanation:

α/2 = 0.10/2 = 0.05 

z(0.05) = 3.92 

-z(0.05) = -3.92 

4 0

3 years ago

A colony of bacteria is growing exponentially according to the function below, where t is in hours. What will the approximate nu

Advocard [28]

I would be glad to help you, however what is the function?

8 0

3 years ago

What is the average rate of change for the function f(x)=3x^2 -5 on the interval −3 ≤ x ≤ −1 ?

Anestetic [448]

Answer:

-12

Step-by-step explanation:

Let b = -1 and a = -3

The average rate of change = $\frac{f(b) - f(a)}{b - a}$

f(b) = f(-1) = 3(-1)^2 - 5 = 3 - 5 = -2

f(a) = f(-3) = 3(-3)^2 - 5 =27 - 5 = 22

f(b) - f(a) = -2 - 22 = -24

b - a = -1 + 3 = 2

$\frac{f(b) - f(a)}{b - a}$ = -24/2 = -12

4 0

3 years ago