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Katen [24]
3 years ago
15

Plzzzz help me ppl maths

Mathematics
1 answer:
erica [24]3 years ago
4 0

(m + 7)(m + 3) \\ m(m + 3) + 7(m + 3) \\ m {}^{2}  + 3m + 7m + 21 \\ m {}^{2}  + 10m + 21

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5+3w+3-w combine like terms to simplify
andreev551 [17]

Answer:

8 + 2w

Step-by-step explanation:

⇒ Change all signs to addition (subtraction is the same as adding a negative):

5 + 3w + 3 + -w

⇒ Since the expression is now all addition, you can rearrange them in any order. So group the terms together by their type:

5 + 3 + 3w + -w

⇒ Simplify:

8 + 2w

<u>Answer:</u> 8 + 2w

<em />

<em>Hope this helps!</em> :)

8 0
3 years ago
Read 2 more answers
Which expression represents the distance between point (0, a) and point (a, 0) on a coordinate grid?
o-na [289]

Answer:

\sqrt{2} a

Step-by-step explanation:

The distance between point (x1,y1) and (x2,y2) on a coordinate plane is given by expression \sqrt{(x1-x2)^2+(y1-y2)^2}

In the problem given coordinate points are

(0, a) and (a, 0).

Thus, distance between these points are given by

distance = \sqrt{(x1-x2)^2+(y1-y2)^2}\\=>distance = \sqrt{(0-a)^2+(a-0)^2}\\=>distance = \sqrt{(a)^2+(a)^2}\\\\=>distance = \sqrt{2a^2}\\=>distance = \sqrt{2} a

Thus , expression \sqrt{2} a gives the distance between point (0, a) and point (a, 0) on a coordinate grid.

5 0
3 years ago
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What is 1.2 divided by 8.2
Karo-lina-s [1.5K]
This equals 0.146341463414634
3 0
4 years ago
Read 2 more answers
Show work for 3,220 ÷ 4
gavmur [86]
Step 1: <span>Set up the long division.
 
  _______
4| 3 2 2 0

Step 2: </span><span>Calculate 32 ÷ 4, which is 8.
       
</span>  __ 8____
4| 3 2 2 0
    3 2

Step 3: Bring down 20, so that 20 is large enough to be divided by 4.

__ 8____
4| 3 2 2 0
    3 2
_________
          2 0

Step 4: Calculate<span> 20 ÷ 4, which is 5.
       8 0 5
</span>  ________
4| 3 2 2 0
    3 2
  ________
           2 0
           2 0
          ____

Step 5: Therefore,<span> 3,220 ÷ 4 = 805.

The answer is 805

Done! :)</span>
3 0
4 years ago
Find the diameter of a circle with a circumference of 15.71 yards
Nata [24]

Step-by-step explanation:

Circumference = Diameter · π

15.71 = d · 3.14

15.71 ÷ 3.14 = 5.003...

5 ≈ d

4 0
4 years ago
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