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3 years ago

What is three and three sevenths plus two and a half?

Mathematics

2 answers:

spin [16.1K]3 years ago

7 0

Answer: 5.928 and so on

Step-by-step explanation:

katrin2010 [14]3 years ago

7 0

Answer:

$5 \frac{13}{14}$

Step-by-step explanation:

$3 \frac{3}{7} + 2 \frac{1}{2}$

find LCM/ least common multiple

7:7 14 21 28 35...

2:2 4 6 8 10 12 14 16 18...

$3 \frac{3}{7} = 3 \frac{6}{14}$

$2 \frac{1}{2} = 2 \frac{7}{14}$

$3 \frac{6}{14} + 2 \frac{7}{14} =$

$5 \frac{13}{14}$

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45 is 20% of what number?

nadezda [96]

$x-\ number\\\\
20\%x=45\\\\
\frac{20}{100}x=45\\\\
0.2x=45\ \ \ | divide\ by\ 0.2\\\\
x=225\\\\
45\ is\ 20\% \ of\ 225.$

5 0

3 years ago

What is the answer for x

alexandr402 [8]

Answer:

x = 8.5

Step-by-step explanation:

I got this answer by assuming the triangles were congurent, if they are not, the answer may vary.

first, make an equation:

x + 8 = 3x - 9

bring 3x to the other side, by subtracting it

-2x + 8 = -9

Subtract 8

-2x = -17

divide by -2

x = 8.5

Then, just sub x into the formulas

5 0

3 years ago

41 out of 50 women surveyed liked perfume. what percentage of women did NOT like perfume

krok68 [10]

Answer:

18%

Step-by-step explanation:

Long Version: 41/50 = 0.82 and when you move the decimal two places right, you will get 82%. 100%-82%= 18%

Short Version: 9/50 people didn't like perfume. 9/50= 0.18 then you move the decimal two places right and it becomes 18%.

3 0

3 years ago

Read 2 more answers

Which triangles in the diagram are congruent?

GenaCL600 [577]

Answer: triangle 1, triangle 2, and triangle 3

Step-by-step explanation:

Triangles 1 and 3 are congruent by SAS. So, by CPCTC, all three sides are congruent, making triangle 2 congruent to them as well by SSS.

4 0

2 years ago

3. What is the scale factor of Figure B to Figure A?

xxMikexx [17]

Answer:

2.5

Step-by-step explanation:

From the diagram, figure B was enlarged to obtain figure A.

The two figures are therefore similar.

The corresponding sides are in the same proportion. That constant value of the proportion is called scale factor.

It is given by:

$k = \frac{image \: length}{corresponding\:object \: length}$

Figure B is the image of A

$k = \frac{10}{4} = \frac{25}{10} = \frac{21.5}{8.6} = 2.5$

Therefore the scale factor is 2.5

4 0

3 years ago