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3 years ago

Does reversing the order of digits of a 2 digit prime number always result in a prime number

Mathematics

2 answers:

Naily [24]3 years ago

7 0

No
for example:

29 if you switch the digits it becomes 92 and 92 is composite because 2x46=92

Contact [7]3 years ago

4 0

No, for example, if you had the prime number 23, and you switched the numbers around, it is 32. 32 is not a prime number.

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How many meters did a fish swim in 8 minutes at a speed of s meters per minute?

ch4aika [34]

Answer:

Distance traveled by the fish = 8s meters

Step-by-step explanation:

Speed of a fish to swim = s meter per minute And formula used for the speed, Speed = s = Distance = s × time We have to find the distance covered by the fish in 8 minutes (t = 8 minutes) Therefore, Distance traveled by the fish = 8s meters

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3 years ago

In ΔMNO, the measure of ∠O=90°, ON = 35, NM = 37, and MO = 12. What is the value of the tangent of ∠M to the nearest hundredth?

svet-max [94.6K]

Answer:

2.92 Rounded to the 100th

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A spinner is divided into five colored sections that are not of equal size: red, blue, green, yellow, and purple. The spinner is

Hitman42 [59]

Answer:

red 420 times

Step-by-step explanation:

The results show red (18) out of ( 18+10+7+19+6)

18 / 60

18/60 * 1400 = 420 times

7 0

2 years ago

What ia the common ratio of the sequence? -2 , 6, -18, 54,...

Jlenok [28]

Its a multiplication by -3 on each term, so I think you're gonna answer is by r=-3, maybe?

7 0

3 years ago

A small-appliance manufacturer finds that the profit P (in dollars) generated by producing x microwave ovens per week is given b

Olegator [25]

Answer:

Number of ovens must be manufactured in a given week to generate a profit of $1610 is 70

Step-by-step explanation:

We are given

A small-appliance manufacturer finds that the profit P (in dollars) generated by producing x microwave ovens per week is given by the formula

$P=\frac{1}{10}x(300-x)$

provided that 0 ≤ x ≤ 200

We are given

profit is $1610

so, we can set P=1610

and then we can solve for x

$1610=\frac{1}{10}x(300-x)$

Multiply both sides by 10

$1610\cdot \:10=\frac{1}{10}x\left(300-x\right)\cdot \:10$

$16100=x\left(300-x\right)$

$16100=300x-x^2$

$-x^2+300x-16100=0$

now, we can factor it

$(x-70)(x-230)=0$

we can solve for x

and we get

$x=70,x=230$

Since, x=230 does not lie on 0 ≤ x ≤ 200

So, we will consider only x=70

So,

Number of ovens must be manufactured in a given week to generate a profit of $1610 is 70

7 0

3 years ago