3 years ago

A scale drawing has a scale of 2 cm :21 km. find the actual length for a drawing length of 4.5 cm

Mathematics

2 answers:

djverab [1.8K]3 years ago

7 0

The correct answer is C! Because 21/2 = 10.5 and 10.5 x 4.5 = 47.25

tino4ka555 [31]3 years ago

6 0

The answer to this equation would be option C.47.25

hope this helps

:D :)

You might be interested in

Does anyone know what the formula for the area of a circle is?

Sloan [31]

Answer:

search up-area of circle formula and circumference of a circle formula

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statis

Ainat [17]

Answer:

The test statistic Z = 3.125

Step-by-step explanation:

Given Population proportion P = 0.25

Given sample size 'n' = 696

Sample proportion 'p⁻' = 0.30

Test statistic

$Z = \frac{p^{-} -P}{\sqrt{\frac{P Q}{n} } }$

$Z = \frac{0.30-0.25}{\sqrt{\frac{0.25 X 0.75}{696} } } = 3.125$

Final answer:-

The test statistic Z = 3.125

3 0

3 years ago

If anyone knows please help asap!!

sleet_krkn [62]

Answer:

Step-by-step explanation:

it is undefined because its a vertical line.

4 0

2 years ago

Read 2 more answers

A city has two water towers. One tower holds 4.37 x 106 gallons of water and the other holds 3.92 x 106 gallons of water. What i

inysia [295]

Answer:

the answer is 1.713 x 106

Step-by-step explanation:

4 0

2 years ago

A region R in the first quadrant of the xy-plane is bounded by the curves y = x², y = 2 - x and the x-axis. Find the value of th

lions [1.4K]

The two curves meet in the first quadrant when

$x^2 = 2-x \implies x^2 + x - 2 = (x + 2) (x - 1) = 0 \implies x=1$

Then the integral in question is

$\displaystyle \iint_R x \, dA = \int_0^1 \int_{x^2}^{2-x} x \, dy \, dx \\\\ ~~~~~~~~ = \int_0^1 x (2-x-x^2) \, dx \\\\ ~~~~~~~~ = \int_0^1 (2x - x^2 - x^3) \, dx = 1 - \frac13 - \frac14 = \boxed{\frac5{12}}$

3 0

1 year ago