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kari74 [83]
3 years ago
6

Simplify this math problem plz show your work

Mathematics
1 answer:
Temka [501]3 years ago
8 0

9514 1404 393

Answer:

  (8a -a²)/(a +2)

Step-by-step explanation:

Cancel common factors from numerator and denominator.

  \dfrac{-56+15a-a^2}{a^2+2a}\div\dfrac{a-7}{a^2}=-\dfrac{(a-7)(a-8)(a^2)}{a(a+2)(a-7)}\\\\=-\dfrac{a(a-8)}{a+2}=\boxed{\dfrac{8a-a^2}{a+2}}

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Toski is building a room that is 18 feet long and 14 feet wide. Construct a scale drawing of the shed. Use a scale of inch = 2 f
AURORKA [14]

Answer:

Option A is the answer

Step-by-step explanation:

Toski is building a room having length = 18 feet

Width of the room = 14 feet

Scale has been given as 1 inch = 2 feet

∵ 2 feet = 1 inch

∴ 1 feet = \frac{1}{2} feet

∴ 18 feet length of the room = \frac{18}{2}=9 inches

Similarly 14 feet width of the room = \frac{14}{2}=7 inch

Now we count the small blocks in the given options.

Option A has 9 blocks or 9 inches as the length of the room and 7 blocks or 7 inches as the width of the room.

Option A is the answer.

8 0
3 years ago
Read 2 more answers
Simplify -2+5(2+6r)<br><br> I’ll mark brainlist
Dmitriy789 [7]

Answer:

10+30r

Step-by-step explanation:

-2+5(2+6r)

expand 5(2+6r)

5x2=10

(6r)x(5)=30r

so it is 10+30r

then add that to -2

8+30r

Hope that helps :)

6 0
3 years ago
A conjecture and the flowchart proof used to prove the conjecture are shown.
amm1812

Answer:

∠1 + ∠2 + ∠3 = 180°

Step-by-step explanation:

Given :  AB II XC

To Show : ∠1 + ∠2 + ∠3 = 180°

Proof: Here, given that AB is parallel to the line XC

⇒  ∠4  =  ∠2  (Pair of Alternate angles as AB II XC)  .........  (1)

and ∠5  =  ∠3 (Pair of Alternate angles as AB II XC) ...........  (2)

Now, ∠1 + ∠4 + ∠5  = 180° ( Straight Angle)

But, from above (1) and (2)

∠1 + ∠2 + ∠3   =   180°  ( as ∠4  =  ∠2,  ∠5  =  ∠3)

Hence, ∠1 + ∠2 + ∠3   =   180°

Hence Proved.

7 0
3 years ago
Nathan cut a square tile in half for his kitchen floor design. He made one cut along a diagonal from one vertex to another verte
Amiraneli [1.4K]
<span>3. Two isosceles right triangles

Every square has 4 right angles, so each triangle will have one right triangle, which makes the triangles, right triangles. 

They are isosceles because all sides of the square are the same, though the diagonal is not.

Hope this helps :)


</span>
4 0
3 years ago
Brainliest if correct please help
Korvikt [17]

Answer:

it is F

Step-by-step explanation:

carrots and beans combined is 11 and corn is 11

7 0
3 years ago
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