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
hichkok12 [17]
3 years ago
12

HELP PLEASE THIS IS MY LAST QUESTION OF THIS TEST AND I LITERALLY DONT KNOW WHAT TO DOOO!

Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
6 0

Answer:

Complementary!!!

Step-by-step explanation:

You might be interested in
What is -2x+5>11 graphed out on a number line?
grin007 [14]

Step-by-step explanation:

-2x>11-5

x<6/-2

x<-3

Make sure the circle in the number line isnt coloured in!

5 0
3 years ago
The area of the continent of north america is about 9,540,000 in expamded form using expontes to show powers of 10
Firdavs [7]
Koalagirl133 I think this is the answer I don't know if it is 9,540,000× 10 = 94, 500, 000
3 0
3 years ago
Which equations will help you solve this problem? There are 18 muffins on a plate. If they are split equally among 9 people, how
Ber [7]

Answer:

The correct equation should be 18 divided by 9=2

Step-by-step explanation:

By dividing the number of muffins by the number of people you get how much each person gets

4 0
3 years ago
Given that u =&lt; 2,12 &gt;, and z =&lt; -7,5 &gt;
swat32

Using the dot product:

For any vector x, we have

||x|| = √(x • x)

This means that

||w|| = √(w • w)

… = √((u + z) • (u + z))

… = √((u • u) + (u • z) + (z • u) + (z • z))

… = √(||u||² + 2 (u • z) + ||z||²)

We have

u = ⟨2, 12⟩   ⇒   ||u|| = √(2² + 12²) = 2√37

z = ⟨-7, 5⟩   ⇒   ||z|| = √((-7)² + 5²) = √74

u • z = ⟨2, 12⟩ • ⟨-7, 5⟩ = -14 + 60 = 46

and so

||w|| = √((2√37)² + 2•46 + (√74)²)

… = √(4•37 + 2•46 + 74)

… = √314 ≈ 17.720

Alternatively, without mentioning the dot product,

w = u + z = ⟨2, 12⟩ + ⟨-7, 5⟩ = ⟨-5, 17⟩

and so

||w|| = √((-5)² + 17²) = √314 ≈ 17.720

7 0
2 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
2 years ago
Other questions:
  • HELP MEH!!! A cylinder has a height of 1.2 cm and the following base.
    9·2 answers
  • 3/4 foot =___inches<br> Fill in the Blank
    14·2 answers
  • A recursive rule for a geometric sequence is a1=8;an=3/4an−1 .
    6·2 answers
  • The value of 3 in 46.132 is how many times the value of the 3 in 8.553<br><br>A 10<br>B 1 <br>C 1/10
    6·1 answer
  • Are two equilateral triangles always equal
    7·2 answers
  • Combine like terms to create an equivalent expression: <br> 4z-(-3z)
    12·2 answers
  • Jebrel borrowed $7000 from his friend. He saves $110 each month to pay him back. a. How much will he have paid off at the beginn
    5·1 answer
  • Suppose the equation of a line is 2x - 4y = - 8. Which coordinate pair represents the y-intercept?
    5·1 answer
  • Equivalent Ratios
    13·1 answer
  • If anyone could plz help ill really appreciate it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!