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Neko [114]
2 years ago
9

Solve for x. 2x – 3 + 6x = 21 x = [?]

Mathematics
2 answers:
Alex2 years ago
8 0

Answer:

X=3

Step-by-step explanation:

Hope this helps

NISA [10]2 years ago
4 0

Step-by-step explanation:

X=3

The work you should show is in the pic step by step

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What is y + 20 < 180? please help me
taurus [48]

Answer:

y < 160

Step-by-step explanation:

y + 20 < 180

    -20 < -20

y < 160

y is less than 160

5 0
3 years ago
Read 2 more answers
One large bubble separates into four small bubbles so that the total area of the small bubbles is equal to the area of the large
anzhelika [568]

Answer:

10 cm.

Step-by-step explanation:

We'll begin by calculating the area of the small bubble. This can be obtained as follow:

Radius (r) = 5 cm

Area (A) =?

Since the bubble is circular in nature, we shall use the formula for area of circle to determine the area of the bubble. This is illustrated below:

A = πr²

A = π × 5²

A = 25π cm²

Next, we shall determine the total area of the small bubbles. This can be obtained as follow:

Area of 1 bubble = 25π cm²

Therefore,

Area of 4 bubbles = 4 × 25π cm²

Area of 4 bubbles = 100π cm²

Finally, we shall determine the radius of the large bubble. This can be obtained as follow:

Area of large bubble = total area of small bubbles = 100π cm²

Radius (r) =?

A = πr²

100π = πr²

100 = r²

Take the square root of both side

r = √100

r = 10 cm

Thus, the radius of the large bubble is 10 cm

5 0
2 years ago
Anyone with a knee injury or any doctor! What does it mean if my knee popped locked up all in like 1.5 seconds and then it now h
Dmitry_Shevchenko [17]

Answer:

Knee pain can have causes that aren't due to underlying disease. Examples include heavy physical activity, lack of use, injuries such as sprains or strains, sitting in a constrained area, or sitting on knees for a prolonged period.

Step-by-step explanation:

possibly Chondro malacia

Damage to the cartilage under the kneecap.

Symptoms may include

Knee pain

Cracking joints

Swelling of the knee

Please go to your doctor...ik it hard with cov id and everything

7 0
3 years ago
Read 2 more answers
(3v^4 - 2) - (7v^4 + 6)
Lera25 [3.4K]

So firstly, you want to foil - (7v^4 + 6) [Think of the minus sign as -1]: 3v^4 - 2 - 7v^4 - 6

Next, combine like terms and your answer will be: -4v^4-8

5 0
3 years ago
(1 pt) Which operation should be performed first according to the order of operations? 55 ÷ 11 + 16 • [12 • 3 + (54 ÷ 3) – 17] A
vredina [299]
You should do what is in the parentheses first 
7 0
3 years ago
Read 2 more answers
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