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
Alina [70]
2 years ago
10

What is the sum of 2/5 and -4/5? A) 4/5 B) 2/5C) 2/5 D) 4/5​

Mathematics
1 answer:
Vsevolod [243]2 years ago
4 0

Answer:

-2/5

Step-by-step explanation:

2/5 + -4/5 becomes 2/5-4/5

2/5-4/5= -2/5

You might be interested in
Find a polynomial of degree 3 with a real coefficient that satisfies the given condition. Zeros: -2, 1, 0; f(2)=32
xz_007 [3.2K]
Its factors would be
(x+2)*(x-1)*(x+0)

x^2 +x -2

x^3 + 0 + x^2 + 0 -2x +0

Equation: x^3 + x^2 -2x
f(2) = 8 + 4 -4

2x^3  + 2x^2  -4x +0
f(2) = 16 + 8 -8

3x^3  + 3x^2  -6x +0
f(2) =  24 +12 -12

4x^3  + 4x^2  -8x +0
f(2) =  32 +16 -16

So, the equation is:
4x^3  + 4x^2  -8x = 0




8 0
2 years ago
PLEASE HELP!! emir learns to perform 2 vocal pieces during each week of lessons. how many weeks of lessons will emir need before
Semenov [28]

Answer:

2

Step-by-step explanation: divide 4 by 2 its 2!

8 0
2 years ago
Write a x (-a)x 13 x a x (-a) x 13 in power notation
miss Akunina [59]

Answer:

a\times (-a)\times 13\times a\times (-a)\times 13 can be written in power notation as a^{4}\times 13^{2}

Step-by-step explanation:

The given expression

a\times (-a)\times 13\times a\times (-a)\times 13

Writing a\times (-a)\times 13\times a\times (-a)\times 13 in power notation:

Let

a\times (-a)\times 13\times a\times (-a)\times 13

= [13\times13][(a\times (-a)\times a\times (-a)]

As

13\times13 = 13^{2} , a\times a = a^{2} , (-a)\times (-a) = (-a)^{2}

So,

=[13^{2}][a^2\times (-a)^2]

As

(-a)^2 = a^{2}

So,

=[13^{2}][a^2\times a^2]

As ∵a^{m} \times a^{n}=a^{m+n}

=[13^{2}][a^{2+2}]

As ∵a^{m} \times a^{n}=a^{m+n}

=13^{2}\times a^{4}

=a^{4}\times 13^{2}

Therefore, a\times (-a)\times 13\times a\times (-a)\times 13 can be written in power notation as a^{4}\times 13^{2}

<em>Keywords: power notation</em>

<em>Learn more about power notation from brainly.com/question/2147364</em>

<em>#learnwithBrainly</em>

5 0
2 years ago
Please help me ... Tim has developed a money saving strategy that use the formula S=450+100r give a possible interpretation of T
qwelly [4]
Im not completely sure, because I have to know what S and R mean; however, the equation is basically saying that the amount of money saved= is 450$ and every time he does “R”, he saves another 100$
7 0
3 years ago
Expression with the same value
umka2103 [35]
No offense but the question dosen't make sense
3 0
3 years ago
Other questions:
  • 23, 69, 207, 621 What is the 7th term of this sequence?
    7·1 answer
  • Garrett is looking into getting an apartment that costs $950 per month. How much does he need to make per year in order to comfo
    13·2 answers
  • #10 using the right angle below find the cosine of angle B.
    9·1 answer
  • WILL GIVE BRAINLIEST
    11·2 answers
  • Solve the inequality-24≤×-3-8×​
    12·1 answer
  • Can anyone tell me if this is correct please?
    6·2 answers
  • Rearrange then factorise x^2-5x+19=5x+3
    14·1 answer
  • (CHOOSE 1 CORRECT ANSWER, VERY IMPORTANT QUIZ!!)
    8·2 answers
  • Awnser all please I am struggling on it *BRAINLIEST* reward
    5·2 answers
  • Cho tam giác DEF cân tại D có đường trung tuyến DI
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!