for who does not know how to mark brainliest here's how

Answer:

hey

Explanation:

energy in an apple that worms eat

Answer:

8 quarters

Explanation:

Let's look at the ratio first off.

2 quarters: 4 dimes: 7 nickels

Let's write it in terms of money

50 cents of quarters: 40 cents of dimes: 35 cents of nickels

If we add up all the cents then we get $1.25

Then, if we divide $5 by $1.25 we get 4.

You should then multiply the original ratio by 4:

8 quarters: 16 dimes: 28 nickels

Let's check this by turning it to money:

$2: $1.60: $1.4

This all adds up to $5

Therefore your answer is 8 quarters.

Hope this helps!

- Kay

There are $0.769 worth of quarters in the collection.

Word problems with ratios are being solved by adding the ratios together, then relating that portion we are expected to determine to the sum total of the added ratio.

Mathematically, from the given information, we have:

The sum total of these ratios are;
= 2 + 4 + 7

= 13

Now, the number of quarters in the whole collection can be computed as:

[tex]\mathbf{= \dfrac{2}{13}\times \$5}[/tex]

[tex]\mathbf{= \dfrac{2}{13}\times \$5 } \\ \\ \\ = \mathbf{\$0.769}[/tex]

Learn more about word problems here:

https://brainly.com/question/13818690

Answer:

yo this is math

Explanation:

Answer:

Purring is a kind of defence mechanism, and a way for your cat to remain calm when they're stressed . Just as your cat's purring can make you feel calmer, it helps to soothe them too. That's why a lot of cats purr on the vet's table - even when they aren't happy. Purring is more than just a method of non-verbal communication.

Explanation:

Answer:

Although we assume that a cat's purr is an expression of pleasure or is a means of communication with its young, perhaps the reasons for purring can be deciphered from the more stressful moments in a cat's life. Cats often purr while under duress, such as during a visit to the veterinarian or when recovering from injury. Thus, not all purring cats appear to be content or pleased with their current circumstances. This riddle has lead researchers to investigate how cats purr, which is also still under debate.   Scientists have demonstrated that cats produce the purr through intermittent signaling of the laryngeal and diaphragmatic muscles. Cats purr during both inhalation and exhalation with a consistent pattern and frequency between 25 and 150 Hertz. Various investigators have shown that sound frequencies in this range can improve bone density and promote healing. Cats have adapted to conserve energy via long periods of rest and sleep, it is possible that purring is a low energy mechanism that stimulates muscles and bones without a lot of energy. Perhaps cats' purring helps alleviate the dysplasia or osteoporotic conditions that are more common in their canid cousins. Although it is tempting to state that cats purr because they are happy, it is more plausible that cat purring is a means of communication and a potential source of self-healing.

Short answer: Cats purr as a way to calm themselves, to communicate, self-heal.