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Doss [256]
3 years ago
15

A rational number is a number that can be expressed as a ratio of two integers written as a fraction, In which the denominator i

s not zero. Which of the following numbers is not a rational number?
choices:
A: 40%
B: 2/3
C: 2
D: -0.56
Mathematics
2 answers:
Nonamiya [84]3 years ago
5 0
I believe the answer is B :)
Over [174]3 years ago
3 0

Answer:

B. 2/3

...........................

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Plz, help me if u cant answer both could you just answer one of them for me.
labwork [276]

Answer:

for 2. I don't think it can be a triangle

3 0
3 years ago
Read 2 more answers
9. Write the equation in standard form: 25x2 –16y2 = 400
mafiozo [28]

Answer:

25x^2 - 16y^2 - 400 = 0

Step-by-step explanation:

8 0
3 years ago
Find the value of y.
olga nikolaevna [1]
Try this option:
1. the sides of the biggest triangle are 16; x and √(16²-x²); the sides of the smallest triange are x;5 and y. The smallest triangle ~ the biggest triangle. Using the property of the similar triangles: 
\frac{x}{5} = \frac{16}{x}, \ then \ x= \sqrt{80}
2. according to the Pyphagorean theorem (in the smallest triangle):
y= \sqrt{ \sqrt{80^2} -5^2} = \sqrt{55}

answer: y=√55.
4 0
3 years ago
The ratio of students who wear glasses to the total number of students in the class is 2:5 if there are 14 students who wear gla
vazorg [7]

Answer:

35 students in the class.

Step-by-step explanation:

If there are 5 students in the class, then 2 of them would wear glasses and 3 of them wouldn't. (Equation 1)

Now, there are 14 students how are wearing glasses.

We just times the whole Equation 1 by 7.

If there are 5 x 7 = 35 students in the class, then 2 x 7 = 14 of them would wear glasses and 3 x 7 = 21 of them wouldn't.

So, there are 35 students.

8 0
2 years ago
Please answer correctly !!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!
bija089 [108]

Answer:

14

Step-by-step explanation:

(9x + 10)° = 136°

9x + 10 = 136

9x = 126

x = 14

5 0
2 years ago
Read 2 more answers
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