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zubka84 [21]
3 years ago
10

Which of the following is the solution to the equation x + 7.4 = 49.8?

Mathematics
2 answers:
QveST [7]3 years ago
4 0
X +7.4=49.8
X=49.8-7.4
X=42.4
miss Akunina [59]3 years ago
3 0
X+7.4=49.8
   -7.4  -7.4
x=49.8-7.4

x= 42.4
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77julia77 [94]

Answer:

perimeter = 20 m

Step-by-step explanation:

given the area of the square = 25 m² and

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s = \sqrt{25} = 5 ← length of side

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3 0
3 years ago
Work out the value of a and b in the identity.<br> 3ax + 6 - 4(x + b)= 11x + 14
Levart [38]

Answer:

a=5, b=-2

Step-by-step explanation:

If you simplify the equation, you get:

3ax +6 -4x -4b - 11x - 14 = 0 =>

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group together x's and constants:

(3a-15)x -8 -4b = 0

To make this 0 for all x, we have to find an a such that 3a-15 = 0 and b such that -8-4b = 0. this leads to a=5, b=-2

5 0
3 years ago
Which solid has a greater volume?
Lady_Fox [76]

Answer:

C

Step-by-step explanation:

The volume of a cone is given by  V=\frac{1}{3}\pi r^2h

The volume of a cylinder is given by  V=\pi r^2 h

<em>Where h is the height and r is the radius</em>

The first figure is a cone with height 6 and radius 5, we can put it into the formula and find the volume:

\frac{1}{3}\pi r^2 h\\\frac{1}{3}\pi (5)^2 (6)\\=157.08

The second figure is a cylinder with height 50 and radius 1, we can put it into the formula and find the volume:

\pi r^2 h\\\pi (1)^2 (50)\\=157.08

We can see that they are equal. So answer choice C is right.

5 0
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Ivahew [28]
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3 years ago
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Stolb23 [73]
The larger number is 200. The ratio is 20:10 and 200 + 100 = 300.
4 0
3 years ago
Read 2 more answers
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