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mariarad [96]
4 years ago
15

Please help im confused

Mathematics
1 answer:
Umnica [9.8K]4 years ago
3 0
25) It is a right triangle

3²+4²=5²
9+16=25
25=25

26) It is a right triangle

6²+8²=10²
36+64=100
100=100

27) Not a right triangle

5²+5²=10²
25+25=100
50=100

28) It is a right triangle

5²+12²=13²
25+144=169
169=169

Hope this helps :)
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The following set of numbers is going to be graphed on a histogram. If there are going to be four intervals, what will the lengt
Alina [70]

The length of each interval would be 3.75 rounding to whole number is 4.

Step-by-step explanation:

  • Stack in excel from lowest to highest points.
  • Total number of data points are 14.
  • Frequency distribution to be created.
  • You can use countif function for frequency distribution.
  • Since we have already got the number of intervals.
  • It will be easier to calculate the number if intervals.
  • normally there should be 5-15 intervals to get a better histogram.
  • Basic formula is Highest data point - Lowest data point/ classes/intervals.
  • So (29-14)/4 = 3.75 rounding to 4.

8 0
3 years ago
W(a)=a/20<br> what is the value of w(70)
anastassius [24]
W(a) =  \dfrac{a}{20}


W(70) = \dfrac{70}{20}  = \dfrac{7}{2} = 3\dfrac{1}{2}
4 0
4 years ago
one video rental club charges $25 to become a member and 2.50 to rent each video another charges no membership fee but charges $
ladessa [460]

The total charges for the first club as a function of the number of rentals (x) are

... f1 = 25 + 2.50x

The total charges for the second club are

... f2 = 3.25x

We want to find x so that f1 < f2.

... f1 < f2

... 25 + 2.50x < 3.25x

.. 25 < 0.75x . . . . . . . . . . subtract 2.50x

... 25/0.75 < x . . . . . . . . . divide by the coefficient of x

... 33 1/3 < x

You must rent 34 videos or more to make the first club more economical.

8 0
4 years ago
A cafeteria charges a fixed price per ounce for the salad bar. A sandwich costs $3.10, and a drink costs $1.75. If a 7-ounce sal
marshall27 [118]
3.10-1.75= 1.35/3= 0.45
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8 0
3 years ago
Add. Write your answer in simplest form.
Marianna [84]

Answer:

26 over 3 =2

                  ------ = 8.667

                     3

Convert mixed number to improper fraction

5 and 3 over 45

3

4

= ( 5 × 4 ) over 4

5 × 4

4

+ 3 over 4

3

4

= ( 20 + 3 ) over 4

20 + 3

4

= 23 over 4

23

4

Step 1 of 2: Add, sub-step b: Convert mixed number to improper fraction.

Convert mixed number to improper fraction

2 and 11 over 122

11

12

= ( 2 × 12 ) over 12

2 × 12

12

+ 11 over 12

11

12

= ( 24 + 11 ) over 12

24 + 11

12

= 35 over 12

35

12

Step 1 of 2: Add, sub-step c: Find common denominator.

Find common denominator

23 over 4

23

4

+ 35 over 12

35

12

= ( 23 × 3 ) over ( 4 × 3 )

23 × 3

4 × 3

+ ( 35 × 1 ) over ( 12 × 1 )

35 × 1

12 × 1

= 69 over 12

69

12

+ 35 over 12

35

12

12 is the least common multiple of denominators 4 and 12. Use it to convert to equivalent fractions with this common denominator.

Step 1 of 2: Add, sub-step d: Add.

Add

69 over 12

69

12

+ 35 over 12

35

12

= ( 69 + 35 ) over 12

69 + 35

12

= 104 over 12

104

12

                 

5 0
2 years ago
Read 2 more answers
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