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
puteri [66]
3 years ago
13

Expanding each integer in the expression 21x12, the result is [(2x10^1)+(1x10^0)]x[(1x10^1)+(2x10^0)]. Replace the 10s with x's

and then multiply this expression using FOIL. Compare it with the normal integer multiplication method used above: How are they similar? show your work
Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Answer:

(2x+1)(1x+2) = 2x^2 + 4x + x + 2 = 2x^2 + 5x + 2

i think

Step-by-step explanation:

You might be interested in
A spring has natural length 20 cm. Compare the work W1 done in stretching the spring from 20 cm to 30 cm with the work W2 done i
sashaice [31]

Answer:

W1 = W2 = 50k Joules (assuming W1 and W2 have the same force constant, k)

W1 - W2 = 0

Step-by-step explanation:

Work done in stretching a spring is given by 1/2ke^2

Where, k is force constant and e is extension

e1 = 30cm - 20cm = 10cm

W1 = 1/2k(e1)^2 = 1/2×k×10^2 = 50k Joules

e2 = 40cm - 30cm = 10cm

W2 = 1/2k(e2)^2 = 1/2×k×10^2 = 50k Joules

W1 = W2 = 50k Joules provided W1 and W2 have equal force constant

Therefore, W1 - W2 = 0

7 0
3 years ago
Can someone please help me do this
Viefleur [7K]

Answer:

Step-by-step explanation:

CD is Pole

∠CAD = 4°  {Alternate interior angles}

ΔCAD,

\dfrac{opposite \ side}{adjacent \ side}= tan 4\\\\ \dfrac{90}{AD}=tan \ 4\\\\ \dfrac{90}{AD} = 0.069\\\\90 = 0.069*AD\\\\ \dfrac{90}{0.069}=AD\\\\AD = 1304 \ ft

In ΔCDB,

∠B = 5° {Alternate interior angles}

Tan \ 5 = \dfrac{90}{BD}\\\\0.09* BD = 90\\\\BD =   \dfrac{90}{0.09}\\\\BD = 1000 \ ft

4 0
2 years ago
Somebody please help me thansk
ad-work [718]

Answer:

y=-2x-1

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Simplify (-8)(-2) + 11<br> 027<br> 0 -1<br> 0-5
Schach [20]
Answer:-5
-8x-2=-16
-16+11=-5
4 0
3 years ago
Mary purchased a new drawing box. The height, width and length of the box are respectively 12 cm, 6 cm, 3 cm. She wants to fill
Volgvan
12 x 6 x 3 = 216
Volume = 216 cm cubed

216/0.03 = 7200
Answer = 7200 pencils

Hope it helped :)
6 0
3 years ago
Other questions:
  • 1. The expression x3+3x2+x-5 represents the total length across the front of the mansion. Find the length of side I. Show all wo
    9·1 answer
  • What is 635/72=-5/2(-11/4+x)
    14·1 answer
  • What is the radius of a circle with an area of 400(pi) cm^2?
    5·1 answer
  • Four photographers are taking pictures at a school dance. Photographer A takes 25 of the pictures, Photographer B takes 4% , Pho
    6·2 answers
  • Find the area of the figure.
    13·1 answer
  • Plzzzz help I'll fail unless I get this in 6 minutes. Will give BRAINLIEST to answer!!!!!!
    6·1 answer
  • NEED THIS ASAP
    13·2 answers
  • DONT PUT FAKE ANSWERS<br>What are the solutions to this quadratic equation? 5x^2-7x-18=0<br>​
    12·1 answer
  • A store is instructed by corporate headquarters to put a markup of ​67% on all items. An item costing ​12$ is displayed by the s
    5·1 answer
  • Plz answer in (x,y).
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!