SAT Writing and Language

Brenda planted 8 daisies, 3 pansies, 5 zinnias, and 6 marigolds in her garden. What is the ratio of zinnias to daisies?

Trava [24]

Answer:

5:8 i think

Explanation:

7 0

2 years ago

5. how long is the deck of the bridge? show how you calculated r. (3 points: 2 points for work, 1 point for the solution)

Svetlanka [38]

Based on the construction, the length of the bridge deck is given by r = √(x² + y²) units.

A deck is also referred to as the roadway and it can be defined as the functional area which is designed and developed to allow automobile vehicles and pedestrians to cross highways, valleys, and water bodies.

In order to determine the length of the bridge deck, we would apply Pythagorean's theorem as follows:

r² = x² + y²

<u>Where:</u>

r is the length of the bridge deck.

a is the adjacent side (horizontal distance).

b is the opposite side (rise of the bridge).

Making r the subject of formula, we have:

r = √(x² + y²)

Read more on Pythagorean theorem here: brainly.com/question/16176867

#SPJ1

6 0

2 years ago

What is the weight percent of a caffeine solution made by dissolving 6.35 g of caffeine, C8H10N4O2, in 75 g of benzene, C6H6?

SCORPION-xisa [38]

The weight percent is of caffiene is 7.98%.

There are several ways of expressing concentration in chemistry. One of the methods of expressing concentration is by the use of percentage.

In this case, we want to obtain the percent weight/weight concentration of caffeine in benzene.

From the question, we can see that;

Mass of solute = 6.5 g

Mass of solvent = 75 g

percent w/w = mass of solute/ mass of solute + mass of solvent × 100/1

percent weight of caffeine=

6.5/6.5 + 75 × 100/1 =7.98%

Learn more: brainly.com/question/19953404

7 0

2 years ago

Read 2 more answers

At a large corporation, the distribution of years of employment for the employees has mean 20.6 years and standard deviation 5.3

Cerrena [4.2K]

Answer:

Yes

Explanation:

The z score is a score used in statistics to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma}\\\\where\ \mu=mean.\sigma=standard\ deviation, x=raw\ score.\\\\For\ a \ sample\ size\ n:\\\\z=\frac{x-\mu}{\sigma/\sqrt{n} }$

For a normal distribution with a mean of μ and standard deviation σ, For any sample size (n) drawn from this population, the sample mean is normally distributed, with mean $\mu_x=\mu$ and standard deviation $\sigma_x=\frac{\sigma}{\sqrt{n } } \\\\$ .