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Marysya12 [62]
3 years ago
13

True or false? In a proof, every new statement in the first column must be justified by a reason in the second column.

Mathematics
2 answers:
saul85 [17]3 years ago
6 0
False because sometimes the other column can be blank
katrin [286]3 years ago
6 0
The answer is true. The other column cannot be blank, I️t must have a justification for each statement that is made. When you have an unjustified statement, the proof is incomplete.

Hope you have a great day, God bless, and brainliest is always appreciated :)
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Solve the proportion x+1/x-1 = 14/20
polet [3.4K]
Cross multiply
20(x+1)=14(x-1)
20x+20=14x-14
Subtract 14x on each side giving you
6x+20=-14
Subtract 20 on each side giving you
6x=-34
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4 0
4 years ago
Read 2 more answers
Polygon Y is a scaled copy of Polygon X using a scale factor of \dfrac13 3 1 ​ start fraction, 1, divided by, 3, end fraction. P
emmainna [20.7K]

Answer:

Polygon Y's area is one ninth (1/9) of Polygon X's area

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

In this problem

Let

z-----> the scale factor

a-----> Polygon Y's area

b----> Polygon X's area

z^{2}=\frac{a}{b}

we have

z=\frac{1}{3}

substitute

(\frac{1}{3})^{2}=\frac{a}{b}

\frac{1}{9}=\frac{a}{b}

a=\frac{1}{9}b

therefore

Polygon Y's area is one ninth (1/9) of Polygon X's area

8 0
3 years ago
What is the volume of this rectangular prism 7/5 CM by 5 cm and 7/2 cm
Step2247 [10]

Answer:

V=\frac{49}{2}\ cm^3

or

V=24.5\ cm^3

Step-by-step explanation:

we know that

The volume of the rectangular prism is

V=LWH

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L is the length

W is the width

H is the height

substitute the given values in the formula

V=(\frac{7}{5})(5)(\frac{7}{2})

V=\frac{245}{10}\ cm^3

Simplify

V=\frac{49}{2}\ cm^3 ---> fraction form

or

V=24.5\ cm^3 ----> decimal form

7 0
3 years ago
Please help with this
Likurg_2 [28]
Idk know the answer sorry
3 0
3 years ago
Which is Greater 3/4 or 11/16
Elan Coil [88]
\frac{3}{4} = .75
\frac{11}{16} = .6875

\frac{3}{4} \ \textgreater \   \frac{11}{16}
6 0
3 years ago
Read 2 more answers
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