All categories

3 years ago

Simplify the expression 7√7 - 2√28

Mathematics

2 answers:

Nadusha1986 [10]3 years ago

8 0

7√7 - 2√28

2 sqrt(28) = 4 * sqrt(7)

7*sqrt(7) - 4*sqrt(7) =

3 * sqrt(7)

qwelly [4]3 years ago

8 0

7squareroot7-2squareroot28
=7squareroot7-2×2squareroot7
=7squareroot7-4squareroot7
=3squareroot7
=3×2.64
=7.92

You might be interested in

I need to see a line graph

Roman55 [17]

The image below is a line graph

5 0

3 years ago

For a certain bathtub, the hot water faucet can fill the tub in 13 minutes. The cold water faucet can fill the tub in 12 minutes

marusya05 [52]

The answer to your problem dear friend is 5 min, depending on the tub size

8 0

3 years ago

A circle has a diameter of 7.6feet. Which measurement is the closest to the circumference of the circle in feet.

Julli [10]

Answer: and jnnnene

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

If A=(0,0) and B=(8,2), what is the length of AB

NeX [460]

Answer:

$\boxed{\sf Distance_{AB}= 8.24 \ units }$

Step-by-step explanation:

Here two points are given to us and we need to find the distance between the two points . The given points are , A(0,0) and B(8,2) . The distance between the two points can be found out using the Distance Formula , which is ,

Distance Formula:-

$\sf\implies \green{ Distance =\sqrt{ (x_2-x_1)^2+(y_2-y_1)^2}}$

Therefore on substituting the respective values ,we can find the Distance as ,

$\sf\longrightarrow Distance = \sqrt{ ( 0 - 8)^2 + (0-2)^2}$

Simplify the brackets ,

$\sf\longrightarrow Distance =\sqrt{ (-8)^2+(-2)^2}$

Square the numbers inside the squareroot ,

$\sf\longrightarrow Distance =\sqrt{ 64 + 4}$

Add the numbers inside the squareroot ,

$\sf\longrightarrow Distance = \sqrt{68}$

Find the value of squareroot,

$\sf\longrightarrow \boxed{\blue{\sf Distance = 8.24 \ units }}$

Hence the distance between the two points is 8.24 units .

3 0

3 years ago

71 is 10 less than my number what is my number

dimaraw [331]

Since it is 10 less and you are trying to find out your number, you add 10.
71+10= 81
So, your number is 81.

5 0

3 years ago