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
otez555 [7]
3 years ago
13

Solve the formula d = rt for t when d = 280 and r = 40

Mathematics
1 answer:
iragen [17]3 years ago
4 0

Answer:

7

Step-by-step explanation:

280=40t/40

t=7

You might be interested in
X – y ≥ -4. <br> 2x – y ≤ 5. <br> 2y + x &gt; 1
Katen [24]
I took a picture of the work instead ^^

4 0
3 years ago
Solve the system: <br> 2/x - 3/y =-5; 4/x + 6\y =14
sertanlavr [38]

The solution is x = 2 \text{ and } y = \frac{1}{2}

<em><u>Solution:</u></em>

Let us assume,

a = \frac{1}{x}\\\\b = \frac{1}{y}

<em><u>Given system of equations are:</u></em>

\frac{2}{x} - \frac{3}{y} = -5

\frac{4}{x} + \frac{6}{y} = 14

<em><u>Rewrite the equation using "a" and "b"</u></em>

2a - 3b = -5 ------------ eqn 1

4a + 6b = 14 -------------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

<em><u>Multiply eqn 1 by 2</u></em>

2(2a - 3b = -5)

4a - 6b = -10 ------------- eqn 3

<em><u>Add eqn 2 and eqn 3</u></em>

4a + 6b = 14

4a - 6b = -10

( - ) --------------------

8a = 4

a = \frac{4}{8}\\\\a = \frac{1}{2}

Substitute a = 1/2 in eqn 1

2(\frac{1}{2}) -3b = -5\\\\1 - 3b = -5\\\\3b = 6\\\\b = 2

Now let us go back to our assumed values

Substitute a = 1/2 in assumed values

a = \frac{1}{x}\\\\\frac{1}{2} = \frac{1}{x}\\\\x = 2

Substitute b = 2 in assumed value

b = \frac{1}{y}\\\\2 = \frac{1}{y}\\\\y = \frac{1}{2}

Thus the solution is x = 2 \text{ and } y = \frac{1}{2}

3 0
3 years ago
Find the midpoint of A and B where A has coordinates (2, 4)<br> and B has coordinates (-3,-9).
Pavel [41]

Answer:

x= -0.5  

y= -2.5

6 0
3 years ago
One pipe fills a storage pool in 8 hours. A second pipe fills the same pool in 4 hours. When a third pipe is added and all three
steposvetlana [31]
The first pipe fills 1/8 of a pool in one hr.
The second pipe fills 1/4 of a pool in one hr.

(1/8+1/4)2= 3/4 done by the first two pipes in 2 hours.
Therefore the last pipe must do 1 1/4 of the filling in 2 hours, which is 5/8 per hour.

5/8x=1
x=8/5

It takes the third pipe 1 hour and 36 minutes to fill it by itself.
7 0
3 years ago
Convert: 15 days into seconds​
tankabanditka [31]

Answer:

1296000 seconds

Step-by-step explanation:

Hope this helps

8 0
3 years ago
Read 2 more answers
Other questions:
  • Tina uses a $50 gift certificate to buy a pair of pajamas for $17.97, a necklace for $25.49, and 3 pairs of socks that each cost
    10·2 answers
  • Find the area of each figure round to the near st tenth
    15·1 answer
  • NEED SOON AS POSSIBLE
    12·1 answer
  • Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
    13·1 answer
  • PLEASE HELP ASAP I WILL GIVE BRAINLIEST AND LOTS OF POINTS <br> (I just need help for the first 7)
    13·1 answer
  • After seeing this video, another dog owner trained his dog, Lightning, to try to break Tillman’s skateboarding record.
    11·1 answer
  • It takes 4 people 6 days to paint a wall. How many days would it take 12 people
    5·1 answer
  • Another page needs to be solved
    5·1 answer
  • A number less than 9 is more than -16
    10·2 answers
  • The graph of y=tan(x) is vertically stretched by a factor of 7, shifted a distance of 12 units to the left, reflected across the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!