All categories

3 years ago

As an estimation we are told 5 miles is 8 km. Convert 27.4 miles to km.

Mathematics

2 answers:

kicyunya [14]3 years ago

7 0

Answer:

43.8 km to the nearest tenth.

Step-by-step explanation:

5 miles is 8 km

so 1 mile = 8/5 km

and 27.4 miles = 27.4 * 8/5

= 43.84 km

Marizza181 [45]3 years ago

7 0

Good morning ☕️

Answer:

Step-by-step explanation:

let x represent the unknown number of kilometers

Here we notice that the number of miles and the number of kilometers varie proportionally Which means :

$\frac{8}{5} =\frac{x}{27.4}$

then

5x = 27.4×8

then

5x = 219.2

hen

x = 219.2÷5

= 43.84

______________________

You might be interested in

The Volume of a sphare is 28/3 times the surface area calculate The surface area and the Volume of the sphere, correct to the ne

Aloiza [94]

Given:

Volume of a sphere is $\dfrac{28}{3}$ times the surface area.

To find:

The surface area and the volume of the sphere.

Solution:

Volume of a sphere:

$V=\dfrac{4}{3}\pi r^3$ ...(i)

Surface area of a sphere:

$A=4\pi r^2$ ...(ii)

Where, r is the radius of the sphere.

Volume of a sphere is $\dfrac{28}{3}$ times the surface area.

$V=\dfrac{28}{3}\times A$

$\dfrac{4}{3}\pi r^3=\dfrac{28}{3}\times 4\pi r^2$

Multiply both sides by 3.

$4\pi r^3=112\pi r^2$

$\dfrac{\pi r^3}{\pi r^2}=\dfrac{112}{4}$

$r=28$

Using (i), the volume of the sphere is:

$V=\dfrac{4}{3}\times \dfrac{22}{7}\times (28)^3$

$V\approx 91989$

Using (ii), the surface area of the sphere is:

$A=4\times \dfrac{22}{7}\times (28)^2$

$A=9856$

Therefore, the surface area of the sphere is 9856 sq. units and the volume of the sphere is 91989 cubic units.

3 0

3 years ago

For the function F(x) = 1/x-2, which of these could be a value of F(x) when xis

dusya [7]

The answer to this question is C

4 0

2 years ago

HELP PLEASE WILL GIVE BRAINLIEST WORTH 50 POINTS

Alja [10]

Answer:

y = 8.13 x -16125.713

hope it helps

Step-by-step explanation:

Sum of X = 14004

Sum of Y = 977

Mean X = 2000.5714

Mean Y = 139.5714

Sum of squares (SSX) = 53.7143

Sum of products (SP) = 436.7143

Regression Equation = ŷ = bX + a

b = SP/SSX = 436.71/53.71 = 8.13032

a = MY - bMX = 139.57 - (8.13*2000.57) = -16125.71277

ŷ = 8.13032X - 16125.71277

8 0

3 years ago

Read 2 more answers

What is the answer to the equation 5+2(x-1)=12

S_A_V [24]

$5+2(x-1)=12 \\ \\ 2 ( x - 1) = 12 - 5 \ / \ subtract \ 5 \ from \ each \ side \\ \\ 2(x - 1) = 7 \ / \ simplify \\ \\ x - 1 = \frac{7}{2} \ / \ divide \ each \ side \ by \ 2 \\ \\ x = \frac{7}{2} + 1 \ / \ add \ 1 \ to \ each \ side \\ \\ x = \frac{9}{2} \ / \ simplify \\ \\$

So, the answer to this problem is x = 9/2 or x = 4.5.

3 0

2 years ago

Read 2 more answers

CAN YOU HELP ME ND WHO LOVE BILLIE ELISHIE

Alla [95]

I don’t like billies music but i like her as a person

8 0

2 years ago

Read 2 more answers