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
Ann [662]
3 years ago
13

Alex ran 12.8 km in the morning. After​ lunch, he continued running. When he finished the​ run, he had covered 31.4 km in all. W

rite an equation that can be used to find how far Alex ran after lunch.
Let r be the distance in kilometres that Alex ran after lunch.
Mathematics
1 answer:
Ulleksa [173]3 years ago
3 0

Answer:

12.8 km + r = 31.4 km

Step-by-step explanation:

First, Alex ran 12.8 km, then he ran an r amount of km. Added together they equal 31.4 km.

If you need to solve the equation you subtract 12.8 from 31.4 and will give you the amount of miles he ran after lunch.

Ex.: r = 31.4 km - 12.8 km

      r = 18.6 km

Alex ran 18.6 km after lunch

You might be interested in
If angle YWZ = 17, what is angle WXY?
marusya05 [52]
We know that

step 1
if ∡YWZ=17°
then
∡XWZ=17°*2-----> 34°----> because triangle XWY and triangle YWZ are congruents

step 2
∡WXY=∡WZY-------> because triangle XWY and triangle YWZ are congruents
we know that 
<span>the sum of the internal angles of a triangle is 180 degrees
</span>so
180°=∡XWZ+2*∡WXY---------> ∡WXY=[180-∡XWZ]/2
∡WXY=[180-34°]/2-------> ∡WXY=73°

the answer is
∡WXY=73°

5 0
4 years ago
6x - 4 = x + 6
Lyrx [107]
A) One Solution

6x-4=x+6
6x-4+4=x+6+4
6x=x+10
6x-x=x+10-x
5x=10
x=2
3 0
3 years ago
Read 2 more answers
Simplify: <br><br>1. 4³×4⁶/4⁴<br>2. y⁴×y⁶/y⁸<br><br>help me plzzzz<br>​
rjkz [21]

Step-by-step explanation:

{4}^{ 3}  \times  {4}^{6}  \div 4^{4}     \\  {4}^{3 + 6 - 4} \\  {4}^{5}

4 0
3 years ago
Lola needs to buy apples for her bakery as they are having a pie competition!
Crank
She will need 30 apples more and 200 apples in total.
5 0
3 years ago
How would a vertical line test that a circle is not function?
AleksAgata [21]

The vertical line test is a visual way to determine if a curve is a graph of a function or not. A function can only have one output, y, for each unique input, x. If the vertical line you drew intersects the graph more than once for any value of x then the graph is not the graph of a function

5 0
3 years ago
Other questions:
  • Help need in math problem Please help. <br> See picture above.
    8·1 answer
  • A coffee shop offers a special: 33% extra free or 33% off the regular price. Which offer is a better deal? Explain your reasonin
    10·1 answer
  • 21 is 30% of what number?
    7·2 answers
  • Past studies have indicated that the percentage of smokers is estimated to be about 35%. Given the new smoking cessation program
    6·1 answer
  • Define the following terms using your own words. (2-3 sentences only)
    13·1 answer
  • What is the simplified form of StartRoot StartFraction 48 Over 192 EndFraction EndRoot? 1/4
    9·2 answers
  • Margo spends 0.25 of her paycheck on a new dress, One-eighth of her paycheck on shoes, and $24 on a birthday present. If she spe
    13·1 answer
  • PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!
    6·1 answer
  • Which pair shows equivalent expressions? (a) 2(2/5x+2)=2 2/5 x+1 (B) 2(2/5x+2) = 2/5x+4 (C) 2(2/5x+2) =2/5x+2 (D) 2(2/5x+2) =2 2
    12·2 answers
  • Can u solve this problem
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!