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stich3 [128]
3 years ago
13

If a number minus 3 is at most 12, or 1 more than 2 times the number is at least 25, then the number must be less than or equal

to 15, or greater than or equal to 12. True or False
Mathematics
1 answer:
dezoksy [38]3 years ago
3 0

Answer:

The statement is true.

Step-by-step explanation:

Let us assume that x is the required number.

Now, given that the number minus 3 is at most 12.

Hence, x - 3 ≤ 12

⇒ x ≤ 15 ......... (1)

And also given that 1 more than 2 times the number is at least 25.

Hence, 2x + 1 ≥ 25

⇒ 2x ≥ 24

⇒ x ≥ 12 .......... (2)

Therefore, from equations (1) and (2) we get the number must be greater than or equal to 12 or less than or equal to 15.

So, the statement is true. (Answer)

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Is the number 15 prime or composite? prime composite Please help me. Will mark brainiest! Thats okay if you don't know don't ans
elixir [45]

Answer:

Hey there!

15 is composite. A composite number has factors other than one and itself. 15 has factors 3 and 5.

Thus, 15 is composite.

Let me know if this helps :)

8 0
3 years ago
Read 2 more answers
The ratio of the measure of two supplementary angles is 15:21. What is the measure of the smallest angle?
anyanavicka [17]

Answer:

75

Step-by-step explanation:

The measure of two supplementary angles =  15:21

The angles are  15x , 21x

15x + 21x = 180       {Supplementary}

         36x = 180

             x = 180/36

             x = 5

Smallest angle = 15 * 5 = 75

3 0
3 years ago
A scientist wants to find the average mass of fish living in a large pond. So she will use the masses of a sample of fish from t
Oxana [17]
The scientist would use milligrams, grams, and kilograms.

The best procedure would be to randomly pick 52 fish from the entire pond and weigh each of them as this would be the most unbiased way to achieve the average mass
6 0
2 years ago
How do we express twice the sum of a tube and four
Bumek [7]

Answer:

Step-by-step explanation:

2(4 + x) = 34

4 + x = 34/2 = 17

x = 17 - 4 = 13

4 0
3 years ago
Guys help me please ,how to solve it? i need a solution
Ludmilka [50]

Answer:

well, x = 5

Step-by-step explanation:

here,

EB Is parallel to DC , so

Angle AEB = Angle ADE

( because they are corresponding angle pair )

Angle ABE = Angle ACD

( because they are corresponding angle pair )

triangle ADC Is similar to triangle AEB

(By AA similarity criteria )

hence AE / ED = AB / BC ( by CPCT )

so 24/10 = 12/x

=》 24/12= 10/x

=》 x = 5

okay i hope u got it

8 0
2 years ago
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