MATHEMATICS MIDDLE SCHOOL

an adult blue whale weighs 120 tons. a baby blue whale weighs 1/40 of the weight of the adult blue whale. how many pounds does the baby blue whale weigh ?

Answers

Answer 1

Answer: 1/40 * 120 = 120/40 = 3 tons

Answer 2

Answer:

Answer:

3 tons

Step-by-step explanation:

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Which equation best fits the data in the table?x: 1,2,3,4y: 5,7,9,11A y = x + 5B y = 2x + 3C y= 7D y = 4x - 5

David recorded his finishing time, in seconds, for each time he ran the 100 m race during one track season. What was the median of his finishing times?11. 9 11.9 12.0 12.1 12.1 12.2 12.3 12.4 12.4

Answers

The median is 12.1 because it is the center number in the sequence. This only applies if the numbers are in order from least to greatest, and also if there are a even number of numbers in the sequence you must take the average of the two center ones because there is no center one.

How to write 7/8 as a decimal

Answers

$(7)/(8) = \boxed{0.875}$

$(7)/(8)=\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{0.875}}}}}}}}}}}}}}}}}}}}}}}}}}}}$

to make a fruit salad Marvin mixes 1 3/4 cups of diced peaches with 2 1/4 cups of diced pears how many cups of peaches and pears are in a fruit salad

Answers

4 cups....

First, change the proper fractions to improper fractions.

2 1/4 = 9/4

1 3/4 = 7/4

Then, add the improper fractions.

9 7 16
--- + ---- = --------- = 4
4 4 4

4 cups of peaches and pears

Help ASAPSelect the two values of x that are roots of 7x - 15 = -2x.

A. x=-5
B. x=5
C. x= -3/2
D. x=3/2

Answers

Answer:

x = 5/3

Step-by-step explanation:

Solve for x:

7 x - 15 = -2 x

Add 2 x to both sides:

7 x + 2 x - 15 = 2 x - 2 x

2 x - 2 x = 0:

7 x + 2 x - 15 = 0

7 x + 2 x = 9 x:

9 x - 15 = 0

Add 15 to both sides:

9 x + (15 - 15) = 15

15 - 15 = 0:

9 x = 15

Divide both sides of 9 x = 15 by 9:

(9 x)/9 = 15/9

9/9 = 1:

x = 15/9

The gcd of 15 and 9 is 3, so 15/9 = (3×5)/(3×3) = 3/3×5/3 = 5/3:

Answer: x = 5/3

7x-15=-2x
+7 +7
-15=5x
-15 divided by 5 gives yu
X=-3

How can I solve 8 5/6 - 2 1/3=

Answers

You turn 8 5/6 and 2 1/3 into improper fractions (8 5/6 becomes 53/6 and 2 1/3 becomes 7/3)

Then you take 53/6 and 7/3 and find a common denominator which is 6
Then you multiply 7x2 and 3x2 which equals to 14/6

53/6 - 14/6 is 39/6
You can leave it as 39/6 or change it into a mixed number, if you make it a mixed number then you would get 6 3/6 which is equivalent to 6 1/2.

There is another method than what the other user has pointed out (both are valid and are up to personal preference as to which are better)

For this method you need to make sure that both the denominators are the same.

(See attached image)

I hope this makes sense!

As a summary; you must make sure that both denominators of the fractions are the same. Whatever number you multiply by for the denominator, use also for the numerator.

Name three pairs of number that have 5 as their greatest common factor

Answers

5 and 10

5 and 100

5 and 100 million

any of these numbers are possible answers15/20 /17 /43/ 28 /32

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