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dusya [7]
3 years ago
8

Can you help me with this task please?

Mathematics
2 answers:
Vinil7 [7]3 years ago
3 0

Answer:

83 is prime

97 is prime

92 is composite - The pairs are (1,96) (2,46) (4,23)

Step-by-step explanation:

KengaRu [80]3 years ago
3 0
Prime
Prime
Composite
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Lisa wants to use her calculator to square a two-digit positive integer, but she accidentally enters the tens digit incorrectly.
Svetradugi [14.3K]

Answer: Correct two digit number= 24

Step-by-step explanation:

Let

x= tens digit (wrong one)

and y= zeroes digit

and z= tens digit (right one)

Now according to the statement,

(10x+y)² -  (10z+y)² = 2340

Simplifying this we get

(x-z)(5x+y+5z)= 117= 1 * 3 * 3 * 13

So it could either be

x-z=1 or x-z=3

If we take the x-z=1

then 5x+y+5z=117

which is not possible as maximum value we can get from this is 99.

This leaves us with x-z=3

so 5x+y+5z= 39

Put x=3+z

We get,

y+10z= 24

Now as y and z both are single digits so the only possible numbers to fit these are y=4 and z=2.

Put z=2 in x=3+z , we get x=5

So the numbers become 10x+y= 54

and 10z+y= 24

Their sum is 54+24=78

Check

54²-24²= 2340 so it is correct.

7 0
3 years ago
The following polynomial is defined on the interval [-2, 2]:
Bess [88]

Answer:

Using Matlab code for Fourier series to calculate for the function, see the attached

Step-by-step explanation:

Go through the picture step by step.

6 0
3 years ago
Expression 3x²+4x-5<br>x=0​
Korolek [52]

Answer:

x = {1/3, 0}

Step-by-step explanation:

5 0
2 years ago
The sum of two numbers is 24 and their quotient is 5 <br> what are the two numbers
ELEN [110]
The numbers are "x" and "y";
Therefore, we can suggest this system of equations:
x+y=24                         ⇒x=24-y
x/y=5

solve this problem by substitution method.
(24-y)/y=5
24-y=5y
-y-5y=-24
-6y=-24
y=-24/-6=4

x=24-y
x=24-4
x=20

Answer: the numer are: 20 and 4

4 0
3 years ago
Last year, your store had total sales of $190,000. Because of a downturn in the economy, you expect sales to decrease by 3% this
Sunny_sXe [5.5K]
A because if you take the 190000 and multiply it by 3% and then subtract which is 5700 and take 190000 and subtract it by 5700 it will give u the answer is 184300
7 0
3 years ago
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