Test 79,112 for divisibility by 2,3,5,9,or 10

Answers

Answer 1

Answer: If a number is divisible by 2, it will be even. This means it will end in a 0, 2, 4, 6, or 8. 79,112 ends in a 2, so it is divisible by 2.

If a number is divisible by 3, the sum of its individual numbers will be divisible by 3 as well. Since 7+9+1+1+2=20, and 20 is not divisible by 3, 79,112 is not divisible by 3.

If a number is divisible by 5, it will end in a 5 or a 0. 79,112 does not, so it is not divisible by 5.

If a number is divisible by 9, the sum of its individual numbers will be divisible by 9 as well. Since 7+9+1+1+2=20, and 20 is not divisible by 9, 79,112 is not divisible by 9.

If a number is divisible by 10, it will end in a 0. 79,112 does not, so it is not divisible by 10.

Related Questions

A sheet of paper is 8.5 in X 11 inches if you cut 2 in squared from each corner what is the area if the paper
Sam purchased 3 games for $140 after a 30%discount. what was the original price
The sixth graders at Amir’s school voted for the location of their class trip. 35% of the students voted to go to the art museum. If 126 students voted for going to the art museum, how many sixth graders are at Amir’s school?
can someone please help me I've been trying to get an answer for almost 30 mins, I've attached 4 questions and giving out 15 points. Please help! (geometry high school level)
have students write a story problem that can be solved by finding the difference of 432,906 and 61,827 then have them solve the problem

Explain how you decide where to place the decimal in the quotients for a and b.16.5 divided by 10
16.5 divided by 100

Answers

Answer:

a) $(16.5)/(10)=1.65$

b) $(16.5)/(100)=0.165$

Step-by-step explanation:

Given : a) 16.5 divided by 10

b) 16.5 divided by 100

To find : Explain how you decide where to place the decimal in the quotients for a and b ?

Solution :

Placing the decimal in the quotients,

If the value is multiple of 10 then the decimal is placed to the right according to number of zeros.

For example - $(3)/(10)=0.3$ it place one value to the right.

Now, We solve the expressions

a) 16.5 divided by 10

i.e. $(16.5)/(10)=(165)/(100)=1.65$

b) 16.5 divided by 100

i.e. $(16.5)/(100)=(165)/(1000)=0.165$

1.65

0.165

For example, .000 is in the hundreds place to the right and .00 is the tens place.

If the radius of Mars is about 13.7% of Neptunes radius what is the radius of Neptune

Answers

100/13.7 = 7.2999
7.299 x radius of mars = 7.299 x 3397 = 24795.62
therefore radius of Neptune = 24795.62
Hope this could help!

Describe the steps you can use to find an average of fractional amounts

Answers

Answer:

Average of number is equal to sum of numbers by total no.

i.e., $Average\,=\,(Sun\,of\,numbers)/(Total\,no)$

Now when numbers/amounts are fraction then there is one extra step which is to add the fractions.

Lets say we have to find average of 2 fractions i.e., $(3)/(4)\,,\,(5)/(3)$

$\implies\,Average\,=\,((3)/(4)+(5)/(3))/(2)$

Step 1 : First to add the fractions find the LCM of denominator as There are unlike fractions

3 = 1 × 3

4 = 1 × 4

LCM of 3 and 4 = 3 × 4 = 12

Step 2: To make them like fraction we find equivalent fraction of each fraction whose denominator equal to 12

$(3)/(4)*(3)/(3)=(9)/(12)$

$(5)/(3)*(4)/(4)=(20)/(12)$

Step 3: Adding both fractions

$(9)/(12)+(20)/(12)=(9+20)/(12)=(29)/(12)$

Step 4: put these value in average formula

$\implies\,Average\,=\,\frac{(29)/(12){2}$

Step 5: Now we divide $(29)/(12)$ by 2 using fraction division .i.e., multiply the reciprocal of divisor with dividend

here 2 is divisor

Reciprocal = $(1)/(2)$

$\imples Average=(29)/(12)*(1)/(2)=(29*1)/(12*2)=(29)/(24)$

Following these steps Average of fractional amount of any no can be found.

1. first make the denominators of the set the same.
E.g. $(2)/(7)+ (4)/(3)$ = $(6)/(21) + (28)/(21)$ = $(34)/(21)$

2. Divide the total by the number of fractions added together: In this case it was 2 so:
$(34)/(21) * (1)/(2)$ = $(34)/(42)$

3. Simplify the total: $(17)/(21)$