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Brrunno [24]
2 years ago
14

A number that is 7 more than 3 times x

Mathematics
2 answers:
andrew11 [14]2 years ago
7 0

Answer:

28

Step-by-step explanation:

7 multiplied by 3

is =28

klio [65]2 years ago
6 0
Not sure what the question is but 3x + 7 is the algebraic expression that would represent this statement.
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What is the value of x?​
WINSTONCH [101]

Answer:

\large\boxed{x=8\sqrt2}

Step-by-step explanation:

\bold{METHOD\ 1}\\\\\text{Use the Pythagorean theorem:}\\\\leg^2+leg^2=hypotenuse^2\\\\\text{We have}\ leg=8,\ leg=8,\ hypotenuse=x.\\\text{Substitute:}\\\\x^2=8^2+8^2\\\\x^2=2(8^2)\to x=\sqrt{2(8^2)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x=\sqrt2\cdot\sqrt{8^2}\qquad\text{use}\ \sqrt{a^2}=a\\\\x=8\sqrt2

\bold{METHOD\ 2}\\(look\ at\ the\ picture)\\\\\text{We have}\ a=8.\ \text{Therefore}\ a\sqrt2=8\sqrt2

5 0
3 years ago
Does anybody think they can help with this question?
Sati [7]
The perimeter of a square is the sum of all its sides' lengths

That means: perimeter =4*(7m+1)/3
5 0
3 years ago
How do I know if it’s closed or not? (Ignore the “Ben...”
N76 [4]

Answer:

It is open if it is greater or less than >

It is closed if it is greater than or equal to  or    less than or equal to > (but with the line underneath it)

Step-by-step explanation:

5 0
3 years ago
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Need help please show work I’m confused
ANEK [815]

Answer:

4 2 8 89 8

Step-by-step explanation:

6 0
2 years ago
A lie-detector works correctly with 80% probability when the person is lying, and with 90% probability when the person is not. A
muminat

Answer:

the time percentage is 17%

Step-by-step explanation:

The computation of the time percenatge in the case when the detector lie and done with the mistake is as follows:

L denotes the event  in which a person is lying.

NL denotes the event in which a person is not lying.

C denotes the event in which that lie detector works correctly

NC denotes the event in which  lie detector is not working correctly

Now

P(C|L) =0.8

And,

P(NC|L) is

=1 - .8

= 0.2

P(C|NL) =0.9

P(NC|NL) is

= 1 -.9

=.1

P(L) = 0.7

P(NL) is

= 1 - .7

= .3

Now

P(NC) =P(NC|L) × P(L) + P(NC|NL) × P(NL)

=. 2 × .7 + .1 ×.3

=. 14+.03

= 0.17

Hence, the time percentage is 17%

8 0
3 years ago
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