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algol [13]
2 years ago
15

mark bought 8 boxes .A week later half of all his boxes were destroyed in a fire there are now only 20 boxes left. With how many

did he start with?
Mathematics
1 answer:
strojnjashka [21]2 years ago
4 0

Answer:

32 boxes

Step-by-step explanation:

20 · 2 = 40 - 8 = 32

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Please answer a through d
Elza [17]

Answer:

See explanation below.

Step-by-step explanation:

Given: 100 lbs on Earth is 16.6 lbs on the moon.

a. The independent variable is weight. The gravity of the Moon and the gravity of the Earth are constant. Weight can change, but gravity is a constant.

b. An equation that relates the weight of someone on the Moon who travels to the Earth:

100 / 16.6 = 6.02. Take the Moon weight and multiply by 6.02:

Moon Weight * 6.02 = Earth Weight.

Proof:

16.6 * 6.024 = 99.99 - approximately 100 lbs Earth weight.

c. A 185 lb astronaut on Earth would weigh:

16.6 / 100 = .166. Take the Earth weight and multiply by .166:

185 * .166 = 30 lbs on the Moon.

d. A person who weighs 50 lbs on the Moon:

50 * 6.024 = 301.2 lbs on Earth.

Hope this helps! Have a good day and year! :)

5 0
2 years ago
Dan buys a car for £2100.
SVETLANKA909090 [29]

Answer:

£1837.5

Step-by-step explanation:

Given data

Cost of car P=  £2100.

Rate r= 2.2%

Time t= 6 years

Now we want to find the  worth after 6 years, let us apply the compound interest expression but this time for depreciation

A= P(1-r)^t

Substitute

A= 2100(1-0.022)^6

A= 2100*(0.978)^6

A= 2100*0.875

A= £1837.5

Hence the amount of the car after 6 years is £1837.5

8 0
2 years ago
A gardener is planting two types of trees:
nordsb [41]
2x+9=6x+7. 2x+2=6x. 2=4x. X=1/2 a year
7 0
3 years ago
A box contains 8 red balls, 5 brown balls, 4 purple balls, and 3 green balls. What is the probability that a purple ball will be
Gnoma [55]

Answer:

21.1 percent

Step-by-step explanation:

Total balls after -1 red ball=7+5+4+3=19

Prob of purple ball= purple ball/total balls

= 4/19

=0.2105...

percentage:21.1%

5 0
3 years ago
Help please?!!!!!!!!
guajiro [1.7K]

Answer:

12x + 3

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

6 + 4(3x - 2) + 5

<u>Step 2: Simplify</u>

  1. Distribute 4:                              6 + 12x - 8 + 5
  2. Combine like terms (Z):            12x + 3
8 0
2 years ago
Read 2 more answers
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