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Fittoniya [83]
3 years ago
11

Nora’s leaf collection consisted of 150 leaves in August. By December, her collection had grown to 177 leaves. By how much did h

er collection increase between August and December?
9%


12%


15%


18%
Mathematics
1 answer:
castortr0y [4]3 years ago
3 0

Answer: 18%


177/150=1.18

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a fuel mixture consists of 3 parts oil and 11 parts gasoline. the oil costs $0.75 per liter, and the gasoline costs $1.60 per li
kupik [55]

Answer:

Total selling price= $663.82

Selling price per liter= $1.69

Step-by-step explanation:

Giving the following information:

Proportion of oil and gasoline:

Oil= 3/14= 0.21

Gasoline= 11/14= 0.79

The oil costs $0.75 per liter.

The gasoline costs $1.60 per liter.

<u>First, we need to calculate the number of liters of oil and gasoline required:</u>

<u></u>

Oil= 0.21*392= 82.32 liters

Gasoline= 0.79*392= 309.68

<u>Now, the total cost to produce 392 liters:</u>

Total cost= 82.32*0.75 + 309.68*1.6

Total cost= $577.23

<u>Finally, the total and unitary selling price:</u>

Total selling price= 577.23*1.15= $663.82

Selling price per liter= 663.82 / 392= $1.69

6 0
3 years ago
Select the correct answer(click the photo)
MatroZZZ [7]

Answer:

B.

General Formulas and Concepts:

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define function</u>

f(x) = 8x + 4

<u>Step 2: Prep</u>

  1. Rewrite:                         y = 8x + 4
  2. Swap <em>x</em> and <em>y</em>:               x = 8y + 4

<u>Step 3: Find Inverse (Solve for </u><em><u>y</u></em><u>)</u>

  1. Subtract 4 on both sides:                    x - 4 = 8y
  2. Divide both sides by 8:                       (x - 4)/8 = y
  3. Rewrite:                                                 y = (x - 4)/8
  4. Rewrite:                                                f⁻¹(x) = (x - 4)/8
3 0
3 years ago
Irene tutors fellow students to earn spending money. A designer purse she wants to buy is $170. She has already earned and set a
zimovet [89]

Answer:

A

Step-by-step explanation:

$170 - $51 = $119 more needed for the purse

she earns $17 per hour so

$119 ÷ $17 = 7

she should tutor 7 hours so h>10

4 0
3 years ago
Estimate the area of a circle with a radius of 27 meters
serg [7]
2289.06 meters squared
6 0
4 years ago
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How did my teacher get 70?- like I don’t understand
Neporo4naja [7]

Answer:

Each triangle has angles and all of those angles add up to 180 degrees total. since both of those angles at the bottom are equal then their angles would each be 70.

3 0
3 years ago
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