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
AlekseyPX
3 years ago
5

D = {x|x is a whole number}

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0
D = {x|x is a whole number}
E = {4}
F = {2, 4, 6, 8}

D ∩ F = {2, 4, 6, 8}


You might be interested in
Is -100 rational or irational
pychu [463]

-100 is rational.

-100 can be turned into a fraction by doing the following...

Just put 1 underneath -100 and you get \frac{-100}{1}

So that means it is rational since it can be a fraction!

4 0
3 years ago
A train leaves Philadelphia at 2:00 PM. A second train leaves the same city in the same direction at 4:00 PM. The second train t
polet [3.4K]

Answer: First train speed shall be 42 mi/hr

Second train speed shall be 84 mi/hr

Yes it is the valid answer, it gets annoying when almost everyone enters the wrong answer for a good laugh. Either way, hope this helps! Have a spectacular day.

Step-by-step explanation:

What is the 1st train's head start in miles?

Let +s+ = the speed of the 1st train in mi/hr

From 2PM to 4PM is 2 hrs

+d%5B1%5D+=+s%2A2+

---------------------

Let +d+ = distance the 2nd train travels until

it overtakes the 1st train

From 4PM to 6PM is 2 hrs

Start time when the 2nd train leaves

---------------------

Equation for 1st train:

(1) +d+-+2s+=+s%2A2+

Equation for 2nd train:

(2) +d+=+%28+s%2B42+%29%2A2+

--------------------

Substitute (2) into (1)

(1) +%28+s%2B42+%29%2A2+-+2s+=+s%2A2+

(1) +2s+%2B+84+-+2s+=+2s+

(1) +2s+=+84+

(1) +s+=+42+

and

+s%2B+42+=+42+%2B+42+

+s+%2B+42+=+84+

------------------

The 1st train's speed is 42 mi/hr

The 2nd train's speed is 84 mi/hr

---------------------------

check:

(2) +d+=+%28+s%2B42+%29%2A2+

(2) +d+=84%2A2+

(2) +d+=+168+

and

(1) +d+-+2s+=+s%2A2+

(1) +d+-+2%2A42+=+42%2A2+

(1) +d+=+84+%2B+84+

(1) +d+=+168+

8 0
3 years ago
Translate the following sentence into an equation. Then solve the equation.
AfilCa [17]

the answer is

3x+7=25

-7 -7

3x=18

3x/3=18/3

x=6

8 0
3 years ago
Read 2 more answers
23 + 4 + x = 25 -12 porfa ayuda :(
MAXImum [283]

Answer:

x = - 14

Step-by-step explanation:

23 + 4 + x = 25 - 12

Combine like terms on both sides of the equation (by adding 23 and 4 on the left-hand side, and subtracting 12 from 25 on the right-hand side):

23 + 4 + x = 25 - 12

27 + x = 13

Next, subtract 27 from both sides to solve for x:

27 - 27 + x = 13 - 27

x = - 14

Please mark my answers as the Brainliest if you find this explanation helpful :)

4 0
3 years ago
Steve and Michelle Neely are celebrating their 30th anniversary by having a reception at a local reception hall. They have budge
lord [1]
4 500-60 = 4 440
4 440/38 = 116.8
At most they would be able to invite 116 people to the reception with their budget.  
8 0
3 years ago
Read 2 more answers
Other questions:
  • Use right triangle ABC. The figure is for reference only and is not drawn to scale. In a 30-60-90 triangle, the shorter leg had
    8·1 answer
  • A plane flies over city A and reaches city B, 115 miles away, in 15 minutes. Find the speed of the plane in miles per hour assum
    7·1 answer
  • Write the following ratio as a fraction, a decimal and a percentage. 20 to 33
    5·1 answer
  • Really need help on these two math questions ??
    8·1 answer
  • I need help on #5 please!
    15·1 answer
  • There are 8 sophomores on the academic team. At the last competition, they each took the math test. Their scores were 82%, 92%,
    6·2 answers
  • Express 0.0939 as a fraction
    12·2 answers
  • The Hillsboro Inlet Lighthouse lights up how much more area than the Jupiter Inlet Lighthouse? Round your answer to the nearest
    11·1 answer
  • If AABC ~ ADEF, which pair of angles are always congruent?
    9·1 answer
  • What is the answer for ( c )
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!