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geniusboy [140]
3 years ago
6

Classify the numbers as prime or composite 31 42 89 93

Mathematics
2 answers:
Brilliant_brown [7]3 years ago
8 0
Prime: 31 and 89

Composite: 42 and 93

Fittoniya [83]3 years ago
4 0
31 and 89 are prime numbers.
42 and 93 are composite numbers.
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PLEASE HELP I GIVE THANKS
soldier1979 [14.2K]
Well for 3.  you use the Pythagorean theorem to say that 28^2 - 18^2= x^2 so 21.4  and for 4. the Pythagorean theorem says a^2 + b^2 = c^2 with c being the hypotenuse of any right triangle so the sums of the two smaller squares make the sum of the larger square making the answer b 
8 0
3 years ago
Please help, seriously confused
Rufina [12.5K]
Original height = original width = x mm

1. She made an enlarged copy...
height = 2x
width = 2x

2. She cut off a rectangle...
height = 2x
width = \frac{2}{3} *2x= \frac{4}{3}x

3.She doubled the width...
height = 2x
width = 2*\frac{4}{3}x = \frac{8}{3}x

height * width = area

2x * \frac{8}{3}x=139 \ 968  \\ \\ \frac{16}{3}x^2= 139 \ 968 \\\\ x^2=139 \ 968: \frac{16}{3}=139 \ 968 * \frac{3}{16}=  8 \ 748*3 = 26 \ 244 \\  \\ x= \sqrt{26 \ 244} = 162 \ mm

Original height was 162 mm 
6 0
3 years ago
-5(2 × -6) inverse operation
Gekata [30.6K]

Answer:

60

Step-by-step explanation:

-5(2×-6)

-5(-12)

60

It should be correct

5 0
2 years ago
What is the equation of a circle with the center (2,3) and radius 3
ruslelena [56]

Answer:

(x - 2)² + (y - 3)² = 9

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

here (h, k) = (2, 3) and r = 3, hence

(x - 2)² + (y - 3)² = 9 ← equation of circle

4 0
3 years ago
One month Leila rented 3 movies and 2 video games for a total of $21 . The next month she rented 8 movies and 4 video games for
lina2011 [118]
<span>x = price movie = 4.25
y = price game = 5.50</span>
7 0
3 years ago
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