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fgiga [73]
4 years ago
15

–3.4 + (–8 + 2) = [ ? + (–8)] + 2 whats the missing number

Mathematics
1 answer:
Ilia_Sergeevich [38]4 years ago
7 0
I suppose what makes this question annoying is that there is the question mark so what i'll do first is substitute the question mark with x. also, there are annoying parenthesis so we'll first eliminate the ones we don't need. now we just have to solve for x. -3.4 + (-8 + 2) = (x + (-8)) + 2 adding a negative number is subtracting that number so x + (-8) = x - 8 -3.4 + 2 - 8 = x - 8 + 2 -3.4 -6 = x - 6 x = -3.4 make sure you are aware that the negative sign belongs to the number after it so -2 + 4 is not -(2+4) = -6 but rather 4 - 2 = 2. let me know if you have any questions!
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1. What is the sum of the polynomials?
AysviL [449]

Answer:

1. 2m+2n+7

2. 3m-2

3.-2m+2-2n

Explanation:

To find the sum of given polynomials (m+n+3) +(m+n+4)

Firstly, open the parenthesis we will get  m+n+3+m+n+4  

After simplification we will get  2m+2n+7

To find the difference of given polynomials (10m-6)-(7m-4)

Firstly, open the parenthesis we will get 10m-6-7m+4

After simplification we will get  3m-2

Again to find the difference of the polynomials (4m-5)-(6m-7+2n)

Firstly, open the parenthesis we will get 4m-5-6m+7-2n

After simplification we will get -2m+2-2n

5 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP! Giving brainliest<br> SHOW YOUR WORK FOR BOTH QUESTIONS
EleoNora [17]

Answer:

The Proof for question no 20 and 21 are below.

Step-by-step explanation:

20.

Given:

∠PTR≅∠RSP

PT ≅ RS

To Prove:

ΔPQT ≅ ΔRQS

Proof:

In ΔPQT and ΔRQS

Statements                    Reasons

1. ∠PTR ≅ ∠RSP       1 .Given

2. ∠PQT ≅ ∠ROS     2. Vertical Opposite Angle Theorem.

3. PT ≅ RS                3. Given

4. ΔPQT ≅ ΔRQS     4. By A-A-S Congruence Postulate ....Proved

21.

Given:

PO ≅ SO

O is the Mid Point of NT

To Prove:

∠N ≅ ∠T

Proof:

In ΔPON and ΔSOT

Statements                    Reasons

1. PO ≅ S O              1 .Given

2. ∠PON ≅ ∠SOT    2. Vertical Opposite Angle Theorem.

3. NO ≅ TO              3. O is the Mid Point of NT

4. ΔPON ≅ ΔSOT    4. By S-A-S Congruence Postulate

5. ∠N ≅ ∠T               5. Corresponding Parts of Congruent Triangles are Congruent .( CPCTC )...Proved

3 0
3 years ago
John buys 3 books that each cost the same amount and a magazine, all for $48.48. The magazine costs $1.98. How much does each bo
MakcuM [25]

Answer:

15.50 per book

Step-by-step explanation:

48.48 - 1.98 (the magazine)

46.50

46.50/ 3

15.50 per book

Hope this helps!!!

4 0
3 years ago
If k = -5 find the value of -7k? Please explain step by step or show work on piece of paper to get marked.
Mnenie [13.5K]

Answer:

35

Step-by-step explanation:

Given k=-5

Substitute into the equation given

-7(-5) = 35

8 0
3 years ago
Quick anyone know the answer to this algebra question?
dlinn [17]

The function plotted looks like

f(x)=\log_4 x

which is going to have many things in common with g(x).

Both graphs increase... CHECK

Same x intercept.  Yes, log(1)=0 in every base.  CHECK

No y intercept; log(0) is always undefined.  CHECK

Neither has a vertical asymptote.  No, the y axis, x=0, is the vertical asymptote for both functions.   FALSE, no check

Both graphs have a horizontal asymptote.  No, both functions are slowly growing but grow without bound.  FALSE, no check

5 0
3 years ago
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