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3 years ago

-20 = -5 - 3x I need help on this

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

7 0

Answer:

x=5

Step-by-step explanation:

add 5 to both sides

-20+5 = -3x

-15=-3x (divide)

x=5

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A questionnaire has determined that 20% of the residents of Flaugamuck County own an iPod. Furthermore, 80% of these iPod owners

nydimaria [60]

Answer:

P = 7.14%

The percentage of those 30 years or older that own an ipod is 7.14%

Step-by-step explanation:

Given;

Percentage of ipod owners Pi = 20%

Percentage who don't own ipod Pd = 100-20 = 80%

For age 30 or older;

Percentage of ipod owners who belong to this group

Po = 20% of Pi

Percentage who don't have an ipod but belong to this group Pu = 100-35% = 65% of Pd

The percentage of those 30 years or older that own an ipod is;

P = Po/(Po+Pu) × 100%

Po = 20% of Pi = 20% of 20% = 0.2×20 =4%

Pu = 65% of Pd = 65% of 80% = 0.65×80% = 52%

Substituting the values;

P = 4/(4+52) × 100%

P = 7.14%

5 0

3 years ago

PLSS HELP ME!! I need to find the value of x

-BARSIC- [3]

Answer:

D. 12°

Step-by-step explanation:

80° + 5x = 140°

or, 5x = 140° - 80°

or, x = 60°/5

:. = 12° <em><u>Ans</u></em>

5 0

3 years ago

Read 2 more answers

F(x) = x ^ 2 . What is g(x) ?

Bond [772]

Given:

The function is:

$f(x)=x^2$

The graphs of functions $f(x)$ and $g(x)$ .

To find:

The function $g(x)$ .

Solution:

We have,

$f(x)=x^2$

The function $f(x)$ is vertically compresses to get the graph of the function $g(x)$ . So, the function $g(x)$ is:

$g(x)=kf(x)$

$g(x)=kx^2$ ...(i)

From the given graph it is clear that the graph of the function $g(x)$ passes through the point (3,3). So, putting $x=3$ and $g(x)=3$ in the above function, we get

$3=k(3)^2$

$3=9k$

$\dfrac{3}{9}=k$

$\dfrac{1}{3}=k$

Putting $k=\dfrac{1}{3}$ in (i), we get

$g(x)=\dfrac{1}{3}x^2$

Therefore, the correct option is D.

6 0

3 years ago

Please help me with math

charle [14.2K]

Answer:

Step-by-step explanation:

4.44 i think

26.94 i think

3 0

3 years ago

Read 2 more answers

Seventy concert tickets are sold for 550$.Each adult ticket cost 9$ and each children’s ticket cost 5$.Find the number of adult

Afina-wow [57]

50 adult tickets and 20 children tickets were sold for the concert.

Step-by-step explanation:

Given,

Number of concert tickets sold = 70

Revenue generated = $550

Cost of each adult ticket = $9

Cost of each child ticket = $5

Let,

x be the number of adult tickets sold

y be the number of child tickets sold

According to given statement;

x+y=70 Eqn 1

9x+5y=550 Eqn 2

Multiplying Eqn 1 by 5

$5(x+y=70)\\5x+5y=350\ \ \ Eqn\ 3$

Subtracting Eqn 3 from Eqn 2

$(9x+5y)-(5x+5y)=550-350\\9x+5y-5x-5y=200\\4x=200$

Dividing both sides by 4

$\frac{4x}{4}=\frac{200}{4}\\x=50$

Putting x=50 in Eqn 1

$50+y=70\\y=70-50\\y=20$

50 adult tickets and 20 children tickets were sold for the concert.

Keywords: linear equation, elimination method

Learn more about linear equations at:

#LearnwithBrainly

4 0

3 years ago

-20 = -5 - 3x I need help on this​

-20 = -5 - 3x I need help on this