Difference of 20 and a number , r

Mathematics

1 answer:

ikadub [295]3 years ago

5 0

Answer:

2--r

Step-by-step explanation:

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What is the slope of 2/7x +5y=15

dmitriy555 [2]

Answer:

-2/35

Step-by-step explanation:

Slope y-intercept form : y = mx + b

Here m is the slope and b is the y-intercept

Write the given equation in slope y-intercept form.

$\sf \dfrac{2}{7}x + 5y = 15\\\\$

$\sf 5y = \dfrac{-2}{7}x + 15\\\\ y =\dfrac{-2}{7*5}x + \dfrac{15}{5}\\\\ y = \dfrac{-2}{35}x + 3\\\\ \boxed{\bf Slope = \dfrac{-2}{35}}$

4 0

2 years ago

Molly bought a pair of gloves and a skirt. The gloves cost £4. She sold teh gloves and the skirt for a total of £48. She made 10

fomenos

A) Sale value = 48

Profit on the total cost = 20% = 0.20

=> Total cost + 0.20 total cost = Sale value

=> 1.20 total cost = 48

=> total cost = 48 / 1.20

=> total cost = 40

B) Cost of the gloves = 4

=> Cost of the skirt = total cost - cost of the gloves

=> Cost of the skirt = 40 - 4 = 36

C) Price of the skirt = total value - price of the gloves

Total value = 48

Price of the gloves = cost of the gloves + margin

margin of the gloves = 100% on the cost = cost

Price of the gloves = cost of the gloves * 2

Price of the gloves = 4 * 2 = 8

=> Price of the skirt = 48 - 8 = 40

D) Profit on the skirt = price of the skirt / cost of the skirt = 40 / 36 = 1.1111

Profit % = 11,11 %

6 0

3 years ago

How may terms are in the simplified expression -3x2+2y2+5xy-2y+5x2-3y2

nevsk [136]

The answer is 5 variables

4 0

4 years ago

Read 2 more answers

PLEASE HELP!! ;)<br> What is the result when the number 14 is increased by 4.1%?

mixas84 [53]

Answer:

14.574