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2 years ago

HELPPPP PRECALC WILL GIVE BRAINLIEST

Mathematics

1 answer:

kifflom [539]2 years ago

4 0

Answer:

500

600

500

Step-by-step explanation:

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The first house on the street has a lawn that is 200 feet long. The second house has a lawn that is two times the length of the

My name is Ann [436]

Answer:

The length of the second lawn is 400 feet

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1 year ago

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Suppose 300 nursing students took a certification test that is worth 100 points.

Alja [10]

Answer:

225 students scored 65 or better and 75 students scored 88 or better.

Step-by-step explanation:

We are given that The five-number summary for the scores of 300 nursing students are given :

Minimum = 40

$Q_1 = 65$

Median = 82

$Q_3 = 88$

Maximum = 100

$Q_1$ is the first quartile and is the median of the lower half of the data set. 25% of the numbers in the data set lie below $Q_1$ and about 75% lie above $Q_1$ .

$Q_3$ is the third quartile and is the median of the upper half of the data set. 75% of the numbers in the data set lie below $Q_3$ and about 25% lie above $Q_3$

i) .About how many students scored 65 or better?

$Q_1 = 65$

Since we know that 75% lie above $Q_1$ .

So, Number of students scored 65 or better = $75\% \times 300 = \frac{75}{100} \times 300 =225$

ii)About how many students scored 88 or better?

$Q_3 = 88$

Since we know that 25% lie above $Q_3$

So, Number of students scored 88 or better = $25\% \times 300 = \frac{25}{100} \times 300 =75$

Hence 225 students scored 65 or better and 75 students scored 88 or better.

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3 years ago

Simplify (–9k3 + 12k2 + 9) – (10k3 + 3k2 + 4k – 8)

Goshia [24]

Answer:

-43K+17

Step-by-step explanation:

(–9k3 + 12k2 + 9) – (10k3 + 3k2 + 4k – 8)

-9.3=-27 10.3=30

12.2=24 3.2=6

=(-27k+24k+9) - (30k+6k+4k-8)

COLLECT LIKE TERMS

=(-3k+9) - (40K-8)

= -3k+9-40k+8

= -43k+17

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2 years ago

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Phil is a commercial fisherman. He keeps 5 salmon for every 8 cod he catches. If Phil keeps 15 salmon, how many cod will he keep

sweet-ann [11.9K]

15 / 5 = 3

3 * 8 = 24 cod

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3 years ago

Are false? Two triangles I have the same side lengths to always be congruent.

Vilka [71]

Answer:

true

Step-by-step explanation:

It is TRUE that two triangles with same-length sides will always be congruent. One of the ways to show congruence is to show that the sides are the same length.

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3 years ago