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
Mademuasel [1]
2 years ago
13

100 Points!!!

Mathematics
2 answers:
Mars2501 [29]2 years ago
7 0

Let's see

#a

Take 28

  • (28)²
  • (30-2)²
  • 30²-2(30)(2)+2²
  • 900-120+4
  • 780+4
  • 784

#2

Take 9,10

  • 9³+10³
  • (9+10)(9²-9×10+10²)
  • (19)(81-90+100)
  • 19(181-90)
  • 19(91)
  • 1729
oee [108]2 years ago
4 0

Answer:

Two-digit number greater than 25:   32

Rewrite 32 as the difference of 2 numbers: 40 - 8

Therefore, x = 40  and  y = 8

\begin{aligned}\implies (40-8)^2 & =40^2-2(40)(8)+8^2\\ & = (4 \cdot 10)^2-(80)(8)+64\\ & = 4^2 \cdot 10^2-640+64\\ & = 16 \cdot 100-640+64\\ & = 1600-640+64\\ & = 960+64\\ & = 1024\end{aligned}

Let a = 10

Let b = 11

\begin{aligned}\implies 10^3+11^3 & =(10+11)(10^2-10 \cdot 11+11^2)\\& = 21(100-110+121)\\ & = 21(-10+121)\\ & = 21(111)\\& = 21 (100 + 10 + 1)\\ & = (21 \cdot 100)+(21 \cdot 10)+(21 \cdot 1)\\ & = 2100 +210+21\\ & = 2310 + 21\\ & = 2331\end{aligned}

You might be interested in
What would happen to an annual payment if the APR charged was decreased
Xelga [282]

Answer

The annual payment will consequently decrease

Step-by-step explanation:

If the APR charged say on a mortgage loan is decreased, then the total repayments due will as a consequence decline provided the repayment term remains unaltered. Nevertheless, a decline in total repayments due amounts to a decrease in the annual repayments

8 0
3 years ago
Find the circumference of the circles below. Round your answer to the nearest whole number. Use 3.14 for Pi.
Lisa [10]

Answer:

\huge\boxed{1.\ C\approx38cm;\ 2.\ C\approx57ft;\ 3.\ C\approx50in.}

Step-by-step explanation:

The formula of a circumference of a circle:

C=2\pi r\\\\r-\text{radius}

1.\\r=6cm\\\\C=2\pi\cdot6=12\pi\\\\\pi\approx3.14\\\\C\approx12\cdot3.14=37.68\approx38(cm)\\\\2.\\r=9ft\\\\C=2\pi\cdot9=18\pi\\\\\pi\approx3.14\\\\C\approx18\cdot3.14=56.52\approx57(ft)\\\\3.\\2r=16in.\to r=8in.\\\\C=2\pi\cdot8=16\pi\\\\\pi\approx3.14\\\\C\approx16\cdot3.14=50.24\approx50(in.)

8 0
2 years ago
What is 2x12=24 I got the answer
strojnjashka [21]
You were right 24 is the answer. :)
8 0
3 years ago
I have 30 ones 2thousands 4hundred thousands , 60 tens and 100 hundreds what number am I ?
viva [34]

Answer:

Step-by-step explanation:

Units = 30

Thousands = 2,000

Hundreds of Thousands = 400,000

Tens = 60

Hundreds = 100

HTHHTU

400,000

    2,000

       100

         60

<u>          30</u>

<u>402,190</u>

7 0
3 years ago
Read 2 more answers
Complete the square to make a perfect square trinomial. Then, write the result as a binomial squared. q^2+7q
viva [34]
Stay in school q^2*7q cuh
8 0
3 years ago
Other questions:
  • How to find the surface area of a triangle prism
    10·1 answer
  • What are the x values of a relation
    5·2 answers
  • Three students scheduled interviews for summer employment at the Brookwood Institute. In each case the interview results in eith
    14·1 answer
  • PLEASE HELP
    7·2 answers
  • What is the multiplicative inverse or -3/4
    13·1 answer
  • 4 3/8+ 2 7/12 <br> Alguém sabe a resposta
    9·1 answer
  • 5c+12=11c+16-6c<br><br><br><br> Solve
    7·2 answers
  • The number of wild flowers in a park triples every 5 months. The following expression represents the number of wild flowers in t
    8·1 answer
  • Getting trained and licensed as a truck driver involves a one-time cost of $450. Gas and insurance end up costing about $2 per m
    11·1 answer
  • Carefully follow the steps to find the solution to the three equation system.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!