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ValentinkaMS [17]
2 years ago
15

Express the fraction as a percent. Round to the nearest tenth of a percent if necessary. 31/50

Mathematics
1 answer:
Dominik [7]2 years ago
5 0

Answer: 62%

Step-by-step explanation:

To Express fraction as a percentage, convert to a decimal then multiply by 100

= 31/50 = punch 31 ÷ 50 in a calculator, it gives 0.62

To Express in percentage

= 0.62 x 100

=62%

I hope you understand.

Please mark as brainliest answer.

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In the adjoining figure, area of trangle ABC is
Zepler [3.9K]

Answer:

PQ=4\ cm

Step-by-step explanation:

see the attached figure with the letter D to better understand the problem

we know that

The segment side AD is the height of triangle ABC

so

Triangles PBQ and ABD are similar by AA Similarity Theorem

The area of triangle ABC is equal to

A=\frac{1}{2}(BC)(AD)

we have

A=48\ cm^2\\BC=12\ cm

substitute

48=\frac{1}{2}(12)(AD)

AD=8\ cm

Remember that

If two triangles are similar  then the ratio of its corresponding sides is proportional

so

\frac{BP}{AB}=\frac{PQ}{AD}

substitute the given values

\frac{BP}{2BP}=\frac{PQ}{8}

\frac{1}{2}=\frac{PQ}{8}

PQ=4\ cm

3 0
3 years ago
Look Back! Make Sense and Persevere What numbers
eduard

Answer:

144 and 12.

Step-by-step explanation:

144 is close to 147 and 12 is close to 13.

Moreover, we can easily divide 144 and 12 using mental health i.e 144 ÷ 12 = 12

7 0
2 years ago
U= {1,2,3,4,5,6,7,8,}, A={1,4,5,7}, B= {2,5,6,7,}, and C= {3,4,6,7}
choli [55]

Answer:

  a. {1, 2, 3, 4, 5, 6, 7}

  b. {1, 2, 3, 4, 5, 6, 8}

  c. {4, 5, 7}

  d. {1, 4, 5}

Step-by-step explanation:

The union of two sets is the list of elements in either set. The intersection of two sets is the list of elements in both sets. The complement of a set is the list of elements in the universal set that are not in the set being complemented. The complement of a set can be indicated with an apostrophe: A' is the complement of set A, for example.

<h3>a. AU(BUC)</h3>

B∪C = {2, 5, 6, 7} ∪ {3, 4, 6, 7} = {2, 3, 4, 5, 6, 7}

A∪(B∪C) = {1, 4, 5, 7} ∪ {2, 3, 4, 5, 6, 7} = {1, 2, 3, 4, 5, 6, 7}

<h3>b. (AN(BNC))'</h3>

B∩C = {2, 5, 6, 7} ∩ {3, 4, 6, 7} = {6, 7}

A ∩ (B∩C) = {1, 4, 5, 7} ∩ {6, 7} = {7}

(A∩(B∩C))' = {7}' = {1, 2, 3, 4, 5, 6, 8}

<h3>c. (ANB)U(ANC)</h3>

A∩Β = {1, 4, 5, 7} ∩ {2, 5, 6, 7} = {5, 7}

Α∩C = {1, 4, 5, 7} ∩ {3, 4, 6, 7} = {4, 7}

(A∩B)∪(A∩C) = {5, 7} ∪ {4, 7} = {4, 5, 7}

<h3>d. (ANB')U(ANC')</h3>

(A∩B')∪(A∩C') = A∩(B'∪C') = A∩(B∩C)'

(B∩C)' = {6, 7}' = {1, 2, 3, 4, 5, 8}

A∩(B∩C)' = {1, 4, 5, 7} ∩ {1, 2, 3, 4, 5, 8} = {1, 4, 5}

__

<em>Additional comment</em>

In part (d) we made use of De Morgan's law for sets:

  B'∪C' = (B∩C)'

We also made use of the distributive property for sets:

  A∩(B∪C) = (A∩B)∪(A∩C)

6 0
2 years ago
Find the solution set of this inequality. l4x-8l&gt;8
horrorfan [7]

4x - 8 > 8 \\ 4x - 8 <  - 8 \\  \\  \\ 4x > 16 \\ 4x < 0 \\  \\ x > 4 \\ x < 0
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3 years ago
Saanvi is 8 years older than her little brother. Even though she has called him Funny Face since he was born, she still loves hi
Nat2105 [25]

Answer:

Saanvi is 15 and her brother is 7

Step-by-step explanation:

If Saanvi is 15 and her brother was 7 she would be 8 years older than her brother. If you add their ages together (15+7) it equals 22.

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