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
notsponge [240]
4 years ago
12

How many minutes he does arm routine and abdominal routine

Mathematics
1 answer:
AlekseyPX4 years ago
5 0
Let x be the amount of time it takes to perform an arm routine and y be the amount of time it takes to perform an abdominal routine.  We see:

4x+y=70
4x+2y=100

Subtracting the second equation from the first gives y=30.  Substituting gives 4x+30=70, so 4x=40 and x=10.

Thus, an arm routine takes ten minutes and an abdominal routine takes thirty minutes.
You might be interested in
Hi, can you help me to find (if passible) the complement andsupplement of the angle 3pi/ 4.
nika2105 [10]

Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees.

In radians this are

\begin{gathered} \frac{\pi}{2}\text{ for }90\degree \\ \pi\text{ for }180\degree \end{gathered}

To find the complement of 3π/4, subtract it by π/2

\frac{\pi}{2}-\frac{3\pi}{4}=-\frac{\pi}{4}

To find the supplement of 3π/4, subtract it by π.

undefined

6 0
2 years ago
Give an example using the subject of time to describe how two number patterns are related. Someone, please answer this!
Papessa [141]
Say if you leave a flower in the sun , as Time increases the height of the flower increases
6 0
3 years ago
How do you find the arc length in a circle given any angle?
Nataly_w [17]

You find the circumference and multiply it by the central angle. If the central angle is in degrees, you divide that by 360. If the central angle is in radians, you divide by 2pi.

8 0
3 years ago
What is the advantage of using exponential notation?
Mila [183]
The advantage of using exponential notation is that you won't have to keep writing a long number
For example, 40,000,000,000,000 would be tedious to write over again, but using exponential notation that number would be just 4 X 10^13.
8 0
4 years ago
What is the The range of y = square root X-5 – 1
Step2247 [10]

Answer:

[-1, infinity)

Step-by-step explanation:

I must assume that you meant y = √(x - 5) - 1.

The range of the square root function is [0, infinity.

If 1 is subtracted from the square root function, the range of the resulting function is [-1, infinity).

3 0
3 years ago
Other questions:
  • It takes has a 20 minutes to walk to school . it takes Andre 80% as long to walk to school how long dose it take Andre to walk t
    15·2 answers
  • All of the following are equivalent, except _____.
    11·2 answers
  • CLICK MEEEEEEE!!!!!!!!!!!!!!!
    6·1 answer
  • Can someone solve this???
    7·1 answer
  • I need help Nika baked three loaves of zucchini bread. Each cake needed StartFraction 17 over 4 EndFraction cups of flour. Which
    13·1 answer
  • In the figure shown below, if line m is parallel to line n, then find the value of x
    5·1 answer
  • What is 9x9<br> answer for points!! finna do 2 more then deleting acc
    6·1 answer
  • 4 If 2 sin X = 1 (where X is the measure of an acute angle), then X =
    5·1 answer
  • The diameter of a circle is 2 km. What is the circle's radius?
    10·2 answers
  • HELP PWEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!