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3 years ago

Please help I don’t understand

Mathematics

1 answer:

zaharov [31]3 years ago

4 0

first we multiply both sides by 3, so we get 42=4y-6x, because the division and multiplication cancel each other out, then we move the variable to the other side, so we subtract 4 on both sides and cancel out 4y-4y, so we and up with -4y=-6x-42, then we can divide both sides by -4, so:

final answer: y=3/2x + 21/2

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Helpppppp please ASAPpppppppppppppp!!!!!!!!!!!!!!!!!!

MAXImum [283]

See explanation.

Step-by-step explanation:

To find the amount of profit earned in each product,apply the percent profit formula;

%profit= profit/original price *100

a)Candy

% Profit =65%

Selling price = $6400

This means;

165%=6400

100%=?

Cross multiply

(100*6400)/165 =$3878.80

Original price= $3878.80

Profit= $6400-$3878.80

=$2521.20

b)Wrapping Paper

%profit= 40%

Selling price= $1200

This means;

140%=$1200

100%=?

Cross-multiply

(1200*100)/140=$857.14

Original price=$857.14

Profit=$1200-$857.14

=$342.90

c)Stationery

%profit= 50%

Selling price =$900

This means;

150%=900

100%=?

Cross-multiply

(900*100)/150 = $600

Original price = $600

Profit= $900-$600=$300

d)Calender's

%Profit=25%

Selling price=$3120

This means;

125%=$3120

100%=?

Cross-multiply

(100*3120)/125=$2496

Original Price=$2496

Profit= $3120-$2496=$624

Selling price for pens and pencils =$4500

%percent profit earned = 42%

Profit earned will be:

142% = $4500

100%=?

Cross-multiply

(100*4500)/142 =3169.01

Original price=$3169.01

Profit= $4500-$3169.01

=$ 1331

Learn More

To find profit : brainly.com/question/927518

Keyword : Percent profit,

#LearnwithBrainly

6 0

3 years ago

Find the distance between A and B. A) 7 units B) 6 units C) 5 units 7 units

tatyana61 [14]

It’s 7 unites so I think it’s a

6 0

3 years ago

Read 2 more answers

Suppose that daycare costs are normally distributed with a mean equal to $10,000 a year and a standard deviation equal to $2,000

notka56 [123]

Answer:

50%, 68.26%, 95.54%

Step-by-step explanation:

Let X be the day care costs

X is N(10000, 2000)

Since normal distribution is symmetrical about the mean we get

above 10000, exactly 50% of day care cost would be .

Between 8000 and 12000,

= $P(8000$

Between 6000 and 14000

$P(6000$ %

6 0

3 years ago

Please help 20 points

zysi [14]

Answer:

i think 65 but if not then it is D impossible

Step-by-step explanation:

hope that helps

and that i wasn't to late

6 0

3 years ago

a system of linear equations is given by the tables. one of the tables is represented by the equation y=-1/3x+7. The equation th

Jet001 [13]

Answer:

1). Other line is, y = $\frac{1}{3}x+5$

2). Solution of the system is (3, 6)

Step-by-step explanation:

From the table (1),

Let the equation of the line from the given table is,

y - y' = m(x - x')

Where m = slope of the line

(x', y') is a point lying on the line.

Choose two points from the table which lie on the line.

Let the points are (0, 5) and (3, 6)

Slope = m = $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

= $\frac{5-6}{0-3}$

= $\frac{1}{3}$

Therefore, equation of the will be,

y - 5 = $\frac{1}{3}(x-0)$

y = $\frac{1}{3}x+5$ -------(1)

Let the other line from the table (2) is,

y - y" = m'(x - x")

Two points taken from this table are (0, 7) and (3, 6)

m' = $\frac{7-6}{0-3}$

= $-\frac{1}{3}$

Equation of the line will be,

y - 7 = $-\frac{1}{3}(x-0)$

y = $-\frac{1}{3}x+7$ -------(2)

Therefore, equation of the other line will be, y = $\frac{1}{3}x+5$

By adding equations (1) and (2),

y + y = $-\frac{1}{3}x+\frac{1}{3}x+5+7$

2y = 12

y = 6

From equation (1),

6 = $\frac{1}{3}x+5$

$\frac{1}{3}x=7-6$

x = 3

Therefore, solution of the system is (3, 6).

6 0

4 years ago