MATHEMATICS MIDDLE SCHOOL

3 times a number is 42 what is the number?

Answers

Answer 1

Answer:

If 3 times a number is 42 then the number is 14.

Given that we need to determine 3 times a number is 42 what is the number.

To find the number, let's call it "x," based on the given information, we can set up an equation.

The information states that "3 times a number is 42," which can be written as:

3x = 42

To find the value of "x," we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 3:

3x / 3 = 42 / 3

x = 14

So, the number is 14. To verify, we can substitute "x" back into the original equation:

3 × 14 = 42

And we see that indeed, 3 times the number 14 equals 42, which confirms that our solution is correct.

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Answer 2

Answer:

the number would be 14.

in order for you to figure this out you divide.

42/3=14 and

14 * 3 = 42

hope this helps.

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If A+D=117kg , A+M=88kg and M+D=161kg whats there total weight

thx in advance

Answers

Think of A as a constant - with D it's 117 and with M it's 88

So the difference between D and M is 29 (117-88)

We also know that M + D = 161

Let's substitute in the problem We will leave M equal to M and rewrite D as M+29 since it is 29 kg heavier.
M + M + 29 -161 or 2M +29 = 161 Subtracting 29 from both sides we get 2M=122
Now divide both sides two and get M=61
Since D is M+29 it is 61+29 or 100kg
Finally A + M = 88 A + 61 - 88 Subtract 61 from both sides and get A=17
So there you have it:
A=17kg
M=61kg
D=100kg and it works in all three equation in your problem (try it to check)

There's actually a really slick solution to this problem.Add all three equations. This results in 2(A+M+D)=366. Dividing by two, we see that A+M+D=183, so 183 is the total of the weights.

in a fish tank 8/11 of the fish have red stripes on them. If 16 of the fish have red stripes,how many total fish are in the tank

Answers

Hi there, let x be the number of fish. We know 8/11 of the fish have a red stripe and 16 of the fish have a red stripe. Let's set up a problem, 8/11x=16, 10/x=16*11/8, 10/x=2*11, 10/x=22. Therefore, there are 22 fish in the tank.

There are 22 total fish in the tank because 8 got doubled so 11 would also have to get doubled

How do the 7" s" compare in the number 9,741 and1,479

Answers

in 9741 the 7 stands for the hundreds so it is 700 in 1479 the 7 is in the ones so it stands for good ol' 7
:)

the first 7 in the hundreds place and the second 7 is in the tens place

What is 28 divide 8232 plz show work

Answers

1. Find the Greatest Common Factor (GCF) of 28,8232
Method 1: By Listing FactorsList out all factors of each number, and find the first common one.28: 1,2,4,7,14,28
8232 : 1,2,3...2744,4116,8232
Therefore, the GCF is 28.Method 2: By Prime FactorsList all prime factors of each denominator, and find the intersection of these primes.28: 2,2,7
8232 : 2,2,2,3,7,7,7
Therefore, the GCF is 2×2×7=28.
2.From above, the GCF is 28
28
3.Divide the numerator (28) by the GCF
28÷28=1
4. Divide the denominator (8232) by the GCF
8232÷28=294
5.Rewrite the fraction in the simplified form
1/1294
therefore your answer is 1294

Hope i help :P

What is the area of the shaded part of the parallelogram? A.
288 m²

B.
432 m²

C.
444 m²

D.
576 m²

Answers

Area of parallelogram = AB= 24*18 = 432
Area of unshaded square = a*a = 12*12 = 144

Area of shaded = 432-144 = 288 $mm^(2)$

Please, can you help.... I'm really confused. I need an answer really fast. Thank you

Answers

Answer:

Mean for Labradors: 65

Step-by-step explanation:

This is how to find the M.A.D.

Step 1. Find the mean. To do that, you add all the numbers and divide that number by how many numbers you have which is 10. All the numbers together is 650. That divided by 10, is 65. That is your mean.

Step 2. Once you have that, subtract the mean from all 10 numbers.

Step 3. Find the mean of the 10 numbers which you have subtracted 65 (the mean) from. If the number you subtracted is a negative, make it a positive.

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