1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vesna_86 [32]
3 years ago
5

A submarine was at the surface of the water. 21 seconds later, it was at a depth of 294 meters. What was the average change in t

he submarines depth each second?
Mathematics
1 answer:
topjm [15]3 years ago
3 0

Step-by-step explanation:

21 seconds = -294 meters

=> 1 second = -294/21 = -14 meters

Hence the average change is -14 meters per second.

You might be interested in
The sum of 5 consecutive numbers is -5. What is the largest out of the numbers?
xxTIMURxx [149]
We can say that x is the largest number.

So the sum is x + (x - 1) + (x - 2) + (x - 3) + (x - 4) = -5

Now solve for x:

x + x + x + x + x - 1 - 2 - 3 - 4 = -5

5x - 10 = -5

5x = 5

x = 1

So the largest number is 1.

Check: 1 + 0 + -1 + -2 + -3   =   -2 + -3   =   -5 so 1 is correct.
3 0
3 years ago
What is an equation of the line that passing through the points (-2, -5) and (4, 7) ?
monitta

Answer:

y=2x-1

Step-by-step explanation:

Use the slope-intercept formula: y=mx+b where m is slope and b the y-intercept.

(-2,-5)(4,7)

Use the slope formula for when you have two points:

\frac{y(2)-y(1)}{x(2)-x(1)}=\frac{rise}{run}

Rise over run is the change in the y-axis over the change in the x-axis. Insert values:

\frac{7-(-5)}{4-(-2)}

Simplify parentheses (negative+negative=positive)

\frac{7+5}{4+2}

Simplify

\frac{12}{6}=2

2 is the slope:

y=2x+b

Now use one of the points to find the y-intercept by substituting the x and y values into the equation. Solve for b:

(4,7)

y=2x+b\\7=2(4)+b

7=8+b\\7-8=8-8+b\\7-8=b\\-1=b\\b=-1

The y-intercept is -1. Insert into the equation. Change the + symbol to -:

y=2x-1

Done.

6 0
3 years ago
98464 rounded to the nearest ten thousand?​
dusya [7]

Answer:

100000

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
if 1 mile is 5280 feet, and it is 2 miles from Ellie's house to the school, about how many feet is it from ellie's house to the
Bess [88]
This is a conversion problem. We know that 1 mile is 5280 feet, right? Since Ellie lives 2 miles, and two is double of 1, we just take 5280 and multiply that by two (or add it twice) to find how many feet is between Ellie's house and school. 5280 x 2 = 10560 (you get the same answer if you add 5280 twice). Therefore, 10560 feet lies between Ellie's house and school.
6 0
3 years ago
I suck at math I need help with it!
muminat

Answer:

ok, I can help. Where's the math problem ?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • If x=4 and y=5 work out 5xy+x squared
    7·1 answer
  • Find the ordered-pair solution of y=3x-2
    9·1 answer
  • Answer the questions​
    6·1 answer
  • 6/7 plus 4/5 times 4/5
    8·1 answer
  • The mailing list of an agency that markets scuba-diving trips to the Florida Keys contains 78% males and 22% females. The agency
    14·1 answer
  • Write 7x = 2401 as a logarithmic function.
    9·1 answer
  • You are given the dollar value of a product in 2012 and the rate at which the value of the product is expected to change during
    11·1 answer
  • What point is this? ​
    9·1 answer
  • Fill in the missing verb forms
    12·1 answer
  • Does this horizontal line have a slope? Explain pls.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!