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My name is Ann [436]
3 years ago
12

Which one is bigger, 0.75 or 0.4?​

Mathematics
2 answers:
Montano1993 [528]3 years ago
4 0

Answer:

0.75

Step-by-step explanation:

0.4 = 0.40

0.75>0.40

lions [1.4K]3 years ago
3 0

Answer:

0.75

Step-by-step explanation:

0.75 is 3/4th of 1. 0.4 is 4/10 = 2/5 (40%) of 1. 75 is bigger than 40.

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write an expression for the calculation the difference of 35 and 7 divided by the difference of 9 and 2​
Rudik [331]

Answer:

35-7/ 9-2

28/7

4

Step-by-step explanation:

6 0
3 years ago
Find the sum or difference. 8 1/6 + 7 3/8
Lilit [14]
15 13/24 or in decimal form 15.5416
4 0
3 years ago
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Please explain with working!!! Find the set of values of x that satisfy the inequality 9x^2-15x<6
Oksi-84 [34.3K]

Answer:

-1/3

Step-by-step explanation:

When solving a quadratic inequality, first solve it normally like you would for a normal quadratic equation. We have:

9x^2-15x

Ignore the less than sign and replace it with an equal sign and solve the quadratic for its zeros:

9x^2-15x=6

Subtract 6 from both sides:

9x^2-15x-6=0

Divide everything by 3:

3x^2-5x-2=0

Factor. Find two numbers that equal (3)(-2)=-6 that add up to -5.

-6 and 1 works. Thus:

3x^2-6x+x-2=0\\3x(x-2)+1(x-2)=0\\(3x+1)(x-2)=0

Find the x using the Zero Product Property:

3x+1=0 \text{ or }x-2=0\\x=-1/3\text{ or }x=2

Now, we need to replace the equal signs with symbols again. To do so, we need to test which symbol to place. Let's do the first zero first.

So, the first zero is:

x=-1/3

Assume that the correct symbol is >. Thus,

x>-1/3

Now, pick any number that is greater than -1/3. I'll pick 0 since it's the easiest. Now, plug 0 back into the very original inequality. If it works, then the sign is correct, if it doesn't, then simply use the opposite one. Therefore:

9x^2-15x

0 is indeed less than six, so our first correct solution is:

x>-1/3

For the second one, do the same thing. We have:

x=2

Assume that the correct symbol is <. Thus:

x

Again, pick any number less than 2. I'm going to use 0. Plug 0 back into the original equation

9x^2-15x

Again, this is correct. Therefore, x<2 is also the correct inequality.

So together, we have:

x>-1/3 \text{ and } x

Together, we can write them as:

-1/3

(Note that we don't need to worry about the "or equal to" part since the original inequality didn't have it.)

6 0
3 years ago
Abdi has two electric train sets: A and B. Each train is on its own circular track. He starts both trains at the same time. Trai
mrs_skeptik [129]

Answer: 36 seconds

Step-by-step explanation:

A: 9, 18, 27, 36

B: 12, 24, 36

3 0
3 years ago
Read 2 more answers
Nathaniel had a bag of 5 green marbles,3 blue marbles,6 red marbles,and 6 yellow marbles.Find the probability if Nathaniel pulls
Dovator [93]
To find probability, you'd have to find the total number of marbles (5+3+6+6=20), and since there are 3 blue marbles, the probability of picking one is 3 out of 20, or 3/20
If that blue marble isn't replaced, there will then be 19 marbles, and 2 blue ones. So the probability of him picking another blue marble is 2/19
8 0
3 years ago
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