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Nataly [62]
4 years ago
11

Help please i need the answer​

Mathematics
1 answer:
Genrish500 [490]4 years ago
3 0

Answer:

3x+4

Step-by-step explanation:

You can not add a variable number to a no variable number so just remove the parenthaseis.

Please tell me if I did well.

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Expressions equivalent to z+(z+6)
Ulleksa [173]

Answer:

2z+6

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
1 + 2k = 5k + 7 I got k=2 don't know if it's the right answer ?
DochEvi [55]
You are close, but it is not the correct answer.

1 + 2k = 5k + 7

First, since we are trying to get the variable by itself, we need to move all things to one side. Let's subtract 1 from each side. 
2k = 5k + 7 - 1

Second, we can now subtract (7 - 1) to get 6. Let's add that into our problem and then subtract 5 from each side, still trying to get the variable by itself.
2k - 5k = 6

Third, subtract (2k - 5k) to get -3k. Hint the negative symbol now. If the problem were switched the other way, it would still be a positive. 
-3k = 6

Fourth, we can now divide each side by -3. This results in a fraction and also getting the variable by itself on one side of the problem. Remember the negative sign in front of the fraction since (-3) carried it.
k = - \frac{6}{3}

Fifth, this is our last step. We need to simplify the fraction. Since out fraction is 6/3, which number multiples by 3 to get the answer of 6? The answer is 2, since (3 × 2 = 6). Don't forget the negative!
k = -2

Answer: \fbox {k = -2}
4 0
4 years ago
You are re-tiling the entry to your home and want to create a fancy circular medallion in the center. You want to create a large
WINSTONCH [101]
You need 864.52 sq. in. of blue tile.

We need to find the area of the large circle (including blue and yellow) and the area of the yellow circle.

We have the circumference of the blue circle, 113.097.
C = πd
113.097 = 3.14d

Divide both sides by 3.14:
113.097/3.14 = 3.14d/3.14
36.018 = d

The diameter is twice as much as the radius, so r = 36.018/2 = 18.009.

The area of a circle is given by the formula
A = πr²
A = 3.14(18.009)² = 1018.38 sq. in.

The area of the small yellow circle is given by
A = 3.14(7²) = 3.14(49) = 153.86

Subtracting these two, we have
1018.38 - 153.86 = 864.52 sq. in.
3 0
3 years ago
Will is packing cubes with side lengths that are
fgiga [73]

Answer:

54

Step-by-step explanation:4545

5 0
3 years ago
Read 2 more answers
Dam has been asked to post a parcel for a family member. He has been told that the parcel weighs 12 lbs 8 oz.
ira [324]

Answer:

The weight of the parcel is approximately 6 kilograms.

Step-by-step explanation:

The weight of the parcel is  12 lbs and 8 oz.

1 lb = 16 oz

So,  8 oz =  lb.

That means,  12 lbs and 8 oz = (12 + 0.5) lbs = 12.5 lbs

Now, 1 lb = 454 g

So,  12.5 lbs = (12.5 × 454) g = 5675 g

As,  1 kilogram = 1000 g

That means, 1 g = 0.001 kilogram

So,  5675 g  kilograms. (Rounded to the nearest whole kilogram)

Thus, the weight of the parcel is approximately 6 kilograms.

8 0
3 years ago
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