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Alika [10]
3 years ago
6

Simplify square root of 72 by using imaginary number I

Mathematics
1 answer:
Monica [59]3 years ago
7 0

Answer:

6 \sqrt{2}

Step-by-step explanation:

\sqrt{72 }  =  \sqrt{2 \times 36} \\  = \sqrt{2}  \sqrt{36}  \\  = 6 \sqrt{2}

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Just runs 11 miles in 67 minutes how many miles does he run per minute<br>​
alina1380 [7]

Answer

Just runs 7 minutes per mile

Step by Step explanation

Divide 11 by both numbers which leaves you with

1/6

Because you have to divide 11 by 11 and 67 by 11

when you calculate it you get 6.090909091

so you can round it to 7.

8 0
3 years ago
Are the two triangles shown below similar? yes or no. explain ​
IgorLugansk [536]

Answer:

Yes

Step-by-step explanation:

Since the triangles have two congruent angles, the third angle is also congruent.

The sides of one triangle are proportional to the corresponding sides of the other triangle.

8 0
3 years ago
Read 2 more answers
Solve the inequality for w.<br> - 11 &gt;w- 19
Vaselesa [24]

Answer:

w < 8

Step-by-step explanation:

This means w can be any number below 8.

Example;

w = 7

w = 6

w = 5

and so on...

<em>(</em><em>Changed</em><em> </em><em>original</em><em> </em><em>answer</em><em>.</em><em> </em><em>Thought</em><em> </em><em>it</em><em> </em><em>had</em><em> </em><em>said</em><em> </em><em>-11</em><em> </em><em><</em><em> </em><em>w</em><em> </em><em>-</em><em> </em><em>1</em><em>9</em><em>)</em>

5 0
2 years ago
Read 2 more answers
Resolve to me these exercises please?
Dima020 [189]
A)4^(n+3)=8^14
2^(2×(n+3))=2^(3×14)
2^(2n+6)=2^42
2^2n=2^36
n=18

b) (assuming a : is divide)
3^(2n+1)=9^17/3^3
3^(2n+1)=3^(2×16)/3^3
3^(2n+1)=3^29
3^2n=3^28
2n=28
n=14

d) (6^n)^4×36=216^10
6^4n×6^2=6^(3×10)
6^(4n+2)=6^30
6^4n=6^28
4n=28
n=7

e)7^(n^2)÷7=49^24
7^(n^2-1)=7^(2×24)
7^(n^2)=7^49
n^2=49
n=7

g)15^(n+4)÷5^(n+4)=81^6
3^(n+4)×5^(n+4)÷5^(n+4)=3^(4×6)
3^(n+4)=3^24
n=20

h)81^n÷9^n+9^(n+2)÷9=90÷9^6
9^2n÷9^n+9^(n+2)÷9=9*10/9^6
9^n+9^(n+1)=10/9^5
I don't know where to go from here

I)what?
7 0
3 years ago
Help with quadratic graphs asap!
zlopas [31]

x= -0.25 and 1.25

x = -0.5 and  1.5

x = 0 and 1

x = -0.375 and 1.625

Step-by-step explanation:

Given equation of the curve is

y = 4x^2 -4x-1

(i)

First equation 4x^2 -4x-1 =0

Here y = 0

In  x-axis the value of y = 0

The graph cuts the x-axis at(-0.25,0) and (1.25,0)

So, x= -0.25 and 1.25

(ii)

4x^2 -4x-1 =2

here y = 2

The line y= 2 cuts the curve at (-0.5,2) and (1.5,2)

So, x = -0.5 and  1.5

Given equation of the curve is

y= 3x^2-3x -1

(i)

3x^2-3x +2 =2

\Leftrightarrow  3x^2-3x -1 = -1

Here y = -1

The line y = -1  cuts the curve at (0,-1) and (1,-1)

So x = 0 and 1

(ii)

3x^2-3x -1 =x+1

Here y = x+1

The line y -x =1 cuts the curve at (-0.375,0.5) and (1.625,2).

So x = -0.375 and 1.625

3 0
3 years ago
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