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Gemiola [76]
3 years ago
11

The mathematical 9 € t means

Mathematics
1 answer:
Kamila [148]3 years ago
8 0
It means <span>9 is not an element of T. hope it helped</span>
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1.What is the cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron?
stiks02 [169]

1. Answer;

- Triangle

Explanation;

The cross section formed by a plane that contains a vertical line of symmetry for a tetrahedron is a Triangle.

A tetrahedron also a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners.

2. Answers

- Triangle

Explanation;

The cross section formed by a plane that intersects three faces of a cube is a Triangle. A cross section is the shape we get when cutting straight through an object. The shape of the cross-section of a solid depends upon the orientation of the cutting plane to the solid.

7 0
3 years ago
Read 2 more answers
Work out the size of angle x.
klemol [59]

Answer:

120°

Step-by-step explanation:

since 60° and x are alternate interior

you get this equation

60° + x = 180

subtract 60 from both sides

x = 120

3 0
2 years ago
On a piece of paper graph y= 2x-3. Then determine which answer matches the graph you drew. (there is 4 options not just three)
boyakko [2]

Answer:

A

Step-by-step explanation:

since the slope (2) is positive the graph is similar to y=x, so graphs B and D are eliminated

so when x=1 we have

y=2(1)-3

y=2-3

y=-1

so the point is (1,-1), graph C eliminated

so it's A

3 0
3 years ago
What is 54 percent as a fraction in simplest form
atroni [7]
54% is 54 out of 100.
There for the numerator is 54 and the denominator is 100.

\frac{54}{100}

Now, both the top and the bottom can be divided by 2. So:

\frac{54~divided~by~2}{100~divided~by~2} = \frac{27}{50}

\frac{27}{50} can't be simplified anymore, therefore, 27/50 is 54% as a fraction.

~Hope this helped :)
6 0
2 years ago
Read 2 more answers
Jose asks his friends to guess the higher of two grades he received on his math tests. He gives them two hints. The difference o
AlekseyPX

Answer : 96

x – y = 16 --------> equation 1

\frac{1}{8} x +\frac{1}{2} y = 52

x is the higher grade and y is the lower grade

We solve the first equation for y

x - y = 16

-y = 16 -x ( divide each term by -1)

y = -16 + x

Now substitute y in second equation

\frac{1}{8} x +\frac{1}{2} ( -16 + x ) = 52

\frac{1}{8} x - 8 +   \frac{1}{2} x = 52

\frac{1}{8} x  +   \frac{1}{2} x - 8 = 52

Take common denominator to combine fractions

\frac{1}{8} x  +   \frac{4}{8} x  -8 = 52

\frac{5}{8} x - 8  = 52

Add 8 on both sides

\frac{5}{8} x   = 60

Multiply both sides by \frac{8}{5}

x = 96

We know x is the higher grade

96 is the higher grade of Jose’s two tests.

6 0
3 years ago
Read 2 more answers
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