1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alex_Xolod [135]
2 years ago
12

Ms. Cathy bought a package of pens. Out of every 10 pens, 6 are black. If there are 20 pens in the pack, what fraction of the pe

ns in the pack are black? What percent of the pens in the pack are black?​
Mathematics
1 answer:
melisa1 [442]2 years ago
8 0

Answer:

12/20 or 60%

Step-by-step explanation:

You might be interested in
How do you answer a, b and c, answers and also how you worked it out
Kruka [31]

We can either convert to standard form first or convert to a common multiplier, kinda like a common denominator.  The latter makes more sense if they wanted the result in scientific notation, but let's do it that way anyway.

a)

4.5 × 10⁴ + 3.8  × 10³ = 45 × 10³ + 3.8  × 10³ = 48.8× 10³ = 48,800

Answer:  48,800

b)

4.5 × 10⁴ - 3.8  × 10³ = 45 × 10³ - 3.8  × 10³ = 41.2× 10³ = 41,200

Answer:  41,200

c)

7.2 × 10⁻³ + 6.3  × 10⁻² = 7.2 × 10⁻³ + 63  × 10⁻³ = 70.2 × 10⁻³

       = 7.02 × 10⁻² = 0.0702

Answer: 0.0702

4 0
3 years ago
Create a set of five lengths so that:
lozanna [386]

Answer:

1, 2, 3, 7, 10

Step-by-step explanation:

5 0
2 years ago
The dollar value of a car is a function, f, of the number of years, t, since the car was purchased. The function is defined by t
valentina_108 [34]

Answer:

1.) 12000

2.) 6750

3.) 2.41

Step-by-step explanation:

Given the Equation :

f(t)=12,000(3/4)^t. ; where, t = time ; f(t) = worth of car at time, t

When, car was purchased, t = 0

t = 0

f(0) = 12000(3/4)^0

= 12000 * 1

= 12000

2.)

f(2) ; this mean the worth of the car after 2 years :

f(2)=12,000(3/4)^t.

12000(3/4)^2

12000 * 0.5625

= 6750

When car will be worth 6000

f(t) = 6000

f(t)=12,000(3/4)^t.

6000 = 12,000(3/4)^t

6000 / 12000 = (3/4)^t

1/2 = (3/4)^t

Take the log of both sides :

Log(0.5) = log(0.75)^t

log(0.5) = tlog(0.75)

- 0.301029 = - 0.124938t

t = - 0.301029 / - 0.124938

t = 2.4094

t = 2.41 years

6 0
3 years ago
Your bowl contains 8 red balls, and 9 blue balls, and you draw 4 balls. in how many ways can the selection be made so that at le
kumpel [21]
<span>Your bowl contains 8 red balls, and 9 blue balls, and you draw 4 balls. in how many ways can the selection be made so that at least one of each color is drawn.</span>
5 0
3 years ago
What vertex does the quadrilateral and the pentagon share?
Leokris [45]
It equals the middle
7 0
3 years ago
Other questions:
  • Mr johnson sells erasers for 3 dollars each he sold 96 last week and sold 204 erasers this week about how much morr mone did he
    12·1 answer
  • C = 5/9 (F - 32) <br><br> Please help
    14·1 answer
  • Every person has blood type O, A, B, or AB. A random group of people are blood-typed, and the results are shown in the table. A
    12·2 answers
  • What are the zeros of the quadratic function?<br><br> f(x)=4x2−100
    6·1 answer
  • Determine the value of y, if x is – 3.<br> y = x² – 5
    12·2 answers
  • Help me with these following questions please! marking brainliest
    7·1 answer
  • How far horizontally is the ball from mr Bibbi when it is 25 feet high
    11·1 answer
  • Is 1/8 and 4/32 a proportion?
    9·2 answers
  • HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
    14·1 answer
  • Less than, greater than, or equal to​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!