2 years ago

10 years ago, there were 35 mountain lions and today there are 21. Find the percent of change.

Mathematics

1 answer:

charle [14.2K]2 years ago

4 0

Answer:

40%

Step-by-step explanation:

I I think they were asking about percentage decrease.percentage decrease=to decrease over original price x 100%

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A satellite is composed of 30 modular units, each of which is equipped with a set of sensors, some of which have been upgraded.

Anit [1.1K]

Answer:

$\frac{1}{7}$

Step-by-step explanation:

The satellite has 30 modular units.

There are equal numbers of non-upgraded sensors in each unit.

Let us assume that on the entire satellite there are x numbers of upgraded sensors.

Then as per the given condition, there are $\frac{x}{5}$ number of non-upgraded sensors in one unit.

Therefore, the number of non-upgraded sensors on the entire satellite is $\frac{30x}{5}$ =6x

Hence, total number of sensors in the satellite is (x+ 6x) =7x

Therefore, the required fraction of the upgraded sensors is $\frac{x}{7x} =\frac{1}{7}$ . (Answer)

3 0

2 years ago

5.15 divided by 0.24= I need an explanation

abruzzese [7]

Answer:

Step-by-step explanat

5.15=515/100

0.24=24/100

515/24=21.45

4 0

2 years ago

The garden club earned $15, 15 per hour by weeding neighborhood gardens for t hours. A generous donor has agreed to double their

natima [27]

Answer:

The answer should be $30.

7 0

2 years ago

If a equals B andB equals C which statement must be true?

lubasha [3.4K]

Answer:

A=B=C... wouldn't both B and C be equal to A? Also I can't see the statements.

4 0

3 years ago

Read 2 more answers

we choose a sample of size 100 from a population of monthly cable bills having standard deviation $20 If we assume the populatio

igor_vitrenko [27]

Answer:

0.0062

Step-by-step explanation:

Find the standard error.

σ = 20 / √100

σ = 2

Find the z-score.

z = (x − μ) / σ

z = (70 − 65) / 2

z = 2.5

Find the probability.

P(Z > 2.5) = 1 − 0.9938

P(Z > 2.5) = 0.0062

8 0

2 years ago