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3 years ago

9

A dolphin was swimming 20 feet below the surface of the water. It descended 8 feet to catch a fish. What integer represents its

current depth?

1 answer:

Dmitry_Shevchenko [17]3 years ago

3 0

-28. It’s underwater which is -20 and went -8 more feet down.

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An electrician must use 15 miles of electrical cable between electric poles. How many yards of cable will be used?

Dmitry [639]

Answer:

The 3rd option or 39,600 would be the correct answer.

Step-by-step explanation:

Hope this helps:)

7 0

2 years ago

franklin school has 3 boys for every 4 girls in the fifth grade. there are 140 students in the 5th grade. How many boys are ther

marin [14]

Answer:

There are 60 boys and 80 girls in Franklin School.

Step-by-step explanation:

"franklin school has 3 boys for every 4 girls in the fifth grade." means that the ratio of boys to girls is: 3:4

It can also be written as 3/4

Also given

Total number of students: 140

We will use ratios to find the number of boys and girls in shool.

First of all, we have to calculate the sum of ratio which is: 3+4 = 7

Let b be the number of boys and g be the number of girls

Then

$b = \frac{Ratio\ of\ boys}{Sum\ of\ ratio} * Total\ students\\= \frac{3}{7} * 140\\= 3*20\\=60\\g = \frac{Ratio\ of\ girls}{Sum\ of\ ratio} * Total\ students\\g = \frac{4}{7}*140\\= 4*20\\=80$

Hence,

There are 60 boys and 80 girls in Franklin School.

3 0

3 years ago

A regular polygon has sides all the same length, and angles all the same measure. Find the pelmeter of the regular polygon below

Ede4ka [16]

The perimeter of the regular polygon is 70 inches

<h3>How to determine the perimeter of the regular polygon?</h3>

The sides of the regular polygon is given as:

Side = 10 in

The regular polygon has 7 sides

So, the perimeter of the polygon is calculated as:

P = Side lengths * Number of sides

This gives

P = 10 inches * 7

Evaluate

P = 70 inches

Hence, the perimeter of the regular polygon is 70 inches

Read more about perimeter at

brainly.com/question/24571594

#SPJ1

6 0

1 year ago

Let a be an irrational number. Is 1/a rational or irrational

Marianna [84]

<u>1 is a rational number</u> because 1 can go into 1 when dividing. <u>Irrational numbers are mostly decimals. </u>

7 0

3 years ago

Read 2 more answers

I will upvote and give brainliest answer

zloy xaker [14]

Answer:

x=17

Step-by-step explanation

i just did the exact same question on a test and got it right .

6 0

3 years ago