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fenix001 [56]
4 years ago
14

Solve -3 1/2 = 1/2x + 1/2x + x

Mathematics
1 answer:
Elenna [48]4 years ago
6 0

- 3 1/2 = 2x

-7 /2   = 2 x

-7 /4  = x

-1 3/4 = x

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The length of a rectangle is 5 cm more than the width and the perimeter is at least 61cm. What are the smallest possible dimensi
aleksandrvk [35]

I think the length is 17.75cm and the width is 12.75 cm

I'm not entirely sure whether it's the smallest possible length but it works on the calculator

17.75*2+12.75*2=61

6 0
3 years ago
Will mark Brainliest and 50 points.
Wewaii [24]

Answer:

In that scenario, you will have the shape of a triangle, with the measures of two sides (the two slopes of the roof) and one angle (the peak angle).

Based on that it's easy to find out the length of the other side of the triangle, which in this case would the width of the house, going from the ending tip of the left part of the roof to the ending tip of the right part of the roof.

Let's name a and c the sides of the roof, and the angle B the peak of the roof.

We are then looking for the length of the b side, that would connect sides a and c.

By the Cosines Law, we know that

cos(B) = \frac{c2 + a2 - b2}{2ca}

Which we can transform to isolate b, this way:

b = \sqrt{a^{2} + c^{2} - 2 * a * c * cos(B)}

So, you just have to enter the length of both sides of the roof and the angle, to get the measurement of the width of the house.

4 0
3 years ago
Which one you think it is?<br> because i honestly don't know :/
Semenov [28]

Answer:

im not gonna lie to you... im guessing rn lol

ok so imma just say B

Step-by-step explanation:

i dont know i just saw the 3 and 2 up on top of the 5b and 3 times 2 is 6 and 6 is on top oh the 5b for letter b

7 0
3 years ago
Read 2 more answers
1. If you want to create a cone or cylinder by spinning a 2–dimensional shape about an axis of symmetry, what shapes would you n
Svetllana [295]
1) The answer for both includes a circle. You would rotate the shape around the axis of symmetry, creating an infinite number of 2-d circles stacked on top of each other, creating the cone or cylinder. In the case of a cylinder, the other shape is a rectangle, and in the case of a cone, a right triangle with one line serving as the axis of symmetry.

2) The volume of a cone is the area of the base, multiplied by height, divided by 3. This means that the volume of a cone is 1/3 the volume of a cylinder of equal height and base area. The volume of a cylinder is the area of the base times height. The volume of a pyramid, similar to a cone, is the area of the base (length x width) times the height, divided by three.

3) One definition of density is mass/volume, or mass per unit of volume. For example, if a 5 kg object has a volume of 10 cm³, than the density would be 0.5kg/cm³. In population density, relative to our example, area takes the place of volume and population takes the place of mass. This means that population density is population/area. For example, if 10,000 people occupy an area of 5 square miles, then the population density is 2,000 people/ square mile. 

4) As you are clearly learning in this class, the volume of an object is not only determined by its dimensions, such as base, width, and height, but its shape. Let's review the cone example. If a cone and a cylinder have the same base area and height, the cone has a volume of 1/3 that of the cylinder. 

5) When might you want to use volume in your daily life? Here is a depressing example. Say your corporate job in the Accounting Department has you feeling blue, and your only break is your daily trip to the water cooler. The cups at the cooler are cone-shaped. Not only is this inconvenient because you can't stand them up without getting the rim dirty, but these cups contain 1/3 the water that a perfectly cylindrical cup of the same base/height could provide. You may tell your manager this, and earn yourself some fancy new cylindrical paper cups! 
8 0
3 years ago
What is a+ a/5+ 2/5a
Galina-37 [17]

Answer:

8a over 5

Hope this helps :)

Step-by-step explanation:

8 0
3 years ago
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