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Oliga [24]
3 years ago
8

(-3.4k-7)+(3k+21) find the sum

Mathematics
1 answer:
Firlakuza [10]3 years ago
4 0

Answer:

-0.4k + 14

Step-by-step explanation:

hope that helped!

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1. Consider the figure below.
Illusion [34]

Answer:

  • A triangle sums to 180
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7 0
2 years ago
Please help me thank you so much. Just not sure of my answers
Sedaia [141]

Answer:

An interesting experiment is given. We need to address various questions based on our knowledge of calculus.

Step 2

Part (a)

Time taken for the radius to grow to 2 cm = t1 = r/0.5 = 2/0.5 = 4 hours

Time taken for the radius to become 0 = t2 and the same can be obtained by solving:

r = 2 - √t2 = 0

Hence, t2 = 22 = 4 hours

Hence, the time duration of the entire experiment (from the introduction of the bacteria until its disappearance) = t1 + t2 = 4 + 4 = 8 hours

Step 3

Part (b)

r(t) = 0.5t for 0 ≤ t ≤ 4

and

r(t) = 2 - √(t - 4) for t > 2

Step-by-step explanation:

7 0
3 years ago
When Ricardo was 9 years old, he was 56 inches tall. Ricardo is now 12 years old and he is 62 inches tall. Find the percent of i
Lena [83]
Explanation:
The formula for calculating the percent change in a value between two points in time is:
p
=
N
−
O
O
⋅
100
Where:
p
is the percent change - what we are solving for in this problem.
N
is the New Value - 62 inches in this problem.
O
is the Old Value - 56 inches in this problem.
Substituting and solving for
p
gives:
p
=
62
−
56
56
⋅
100
p
=
6
56
⋅
100
p
=
600
56
p
=
10.7
rounded to the nearest tenth.
Ricardo gres 10.7%
5 0
3 years ago
Trey has plastic cubes stored in a box that measures
Sladkaya [172]
Your answer is D.160
5 0
3 years ago
Read 2 more answers
What is 2/3 of 3/5 ?
Greeley [361]

Answer:

\frac{2}{5}

2/5

Step-by-step explanation:

to multiply fractions, multiply the numerators together and the denominators together:

\frac{2}{3}  x \frac{3}{5}

\frac{2*3}{3*5}

\frac{6}{15}

\frac{2}{5}

3 0
3 years ago
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