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ryzh [129]
3 years ago
13

Which of these nunbers is composite? 3,5,19,71,85

Mathematics
2 answers:
mr Goodwill [35]3 years ago
8 0

Answer:

i think the answer is 85

hope this helps

Step-by-step explanation:


fiasKO [112]3 years ago
6 0

Answer:

85 is a composite number

Step-by-step explanation:

3 = 1 × 3

5 = 1 × 5

19 = 1 × 19

71 = 1 × 19

85 = 1 × 85 = 5 × 17

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El área de un rectángulo es 675cm2, si el largo es 3 veces. ¿Cuáles son las dimensiones del rectángulo?
Gala2k [10]
The answer is 15 cm. Hope I could be of help! ; )
7 0
3 years ago
Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem y' = x2y − 1 2 y
irina [24]

Answer:

Therefore the value of y(1)= 0.9152.

Step-by-step explanation:

According to the Euler's method

y(x+h)≈ y(x) + hy'(x) ....(1)

Given that y(0) =3 and step size (h) = 0.2.

y'(x)= x^2y(x)-\frac12y^2(x)

Putting the value of y'(x) in equation (1)

y(x+h)\approx y(x) +h(x^2y(x)-\frac12y^2(x))

Substituting x =0 and h= 0.2

y(0+0.2)\approx y(0)+0.2[0\times y(0)-\frac12 (y(0))^2]

\Rightarrow y(0.2)\approx 3+0.2[-\frac12 \times3]    [∵ y(0) =3 ]

\Rightarrow y(0.2)\approx 2.7

Substituting x =0.2 and h= 0.2

y(0.2+0.2)\approx y(0.2)+0.2[(0.2)^2\times y(0.2)-\frac12 (y(0.2))^2]

\Rightarrow y(0.4)\approx  2.7+0.2[(0.2)^2\times 2.7- \frac12(2.7)^2]

\Rightarrow y(0.4)\approx 1.9926

Substituting x =0.4 and h= 0.2

y(0.4+0.2)\approx y(0.4)+0.2[(0.4)^2\times y(0.4)-\frac12 (y(0.4))^2]

\Rightarrow y(0.6)\approx  1.9926+0.2[(0.4)^2\times 1.9926- \frac12(1.9926)^2]

\Rightarrow y(0.6)\approx 1.6593

Substituting x =0.6 and h= 0.2

y(0.6+0.2)\approx y(0.6)+0.2[(0.6)^2\times y(0.6)-\frac12 (y(0.6))^2]

\Rightarrow y(0.8)\approx  1.6593+0.2[(0.6)^2\times 1.6593- \frac12(1.6593)^2]

\Rightarrow y(0.6)\approx 0.8800

Substituting x =0.8 and h= 0.2

y(0.8+0.2)\approx y(0.8)+0.2[(0.8)^2\times y(0.8)-\frac12 (y(0.8))^2]

\Rightarrow y(1.0)\approx  0.8800+0.2[(0.8)^2\times 0.8800- \frac12(0.8800)^2]

\Rightarrow y(1.0)\approx 0.9152

Therefore the value of y(1)= 0.9152.

4 0
3 years ago
A recipe for 48 cookies use 2 and 2/3 cups of biscuit mix how many cookies are made from each cup of cookies
madreJ [45]

Answer:

i believe the answer is B

Step-by-step explanation:

make 2 and 2/3 a decimal

2 divided by 3 will give you .6 repeating. just round to .8

then divide 48 by 2.8

it will give you 17.142

i just rounded it to 18... bc its so close to it

<u>hope this helps :)</u>

5 0
3 years ago
Read 2 more answers
Of all the listeners who call the local radio station on the telephone , 60% are between the ages of 15 and 25. a random number
aivan3 [116]

Answer:

Step-by-step explanation:

1 will be B, dont know bout 2

7 0
3 years ago
Please help meeeee!!
Xelga [282]

Answer:

-27

Step-by-step explanation:

order of operations 2÷2 = 1 +53 =54

3x1 = 3 -5 = -2

54÷-2 = -27

5 0
2 years ago
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